From d96380e65496912e0f68e6531565f4b45efd1623 Mon Sep 17 00:00:00 2001 From: Joel Challis Date: Sat, 21 Mar 2020 05:20:04 +0000 Subject: Initial arm->chibios pass - simplify some platform logic (#8450) --- drivers/arm/analog.c | 276 ------------------------------------------- drivers/arm/analog.h | 41 ------- drivers/arm/i2c_master.c | 114 ------------------ drivers/arm/i2c_master.h | 106 ----------------- drivers/arm/ws2812.c | 95 --------------- drivers/arm/ws2812.h | 16 --- drivers/arm/ws2812_pwm.c | 207 -------------------------------- drivers/arm/ws2812_spi.c | 90 -------------- drivers/chibios/analog.c | 276 +++++++++++++++++++++++++++++++++++++++++++ drivers/chibios/analog.h | 41 +++++++ drivers/chibios/i2c_master.c | 114 ++++++++++++++++++ drivers/chibios/i2c_master.h | 106 +++++++++++++++++ drivers/chibios/ws2812.c | 95 +++++++++++++++ drivers/chibios/ws2812.h | 16 +++ drivers/chibios/ws2812_pwm.c | 207 ++++++++++++++++++++++++++++++++ drivers/chibios/ws2812_spi.c | 90 ++++++++++++++ 16 files changed, 945 insertions(+), 945 deletions(-) delete mode 100644 drivers/arm/analog.c delete mode 100644 drivers/arm/analog.h delete mode 100644 drivers/arm/i2c_master.c delete mode 100644 drivers/arm/i2c_master.h delete mode 100644 drivers/arm/ws2812.c delete mode 100644 drivers/arm/ws2812.h delete mode 100644 drivers/arm/ws2812_pwm.c delete mode 100644 drivers/arm/ws2812_spi.c create mode 100644 drivers/chibios/analog.c create mode 100644 drivers/chibios/analog.h create mode 100644 drivers/chibios/i2c_master.c create mode 100644 drivers/chibios/i2c_master.h create mode 100644 drivers/chibios/ws2812.c create mode 100644 drivers/chibios/ws2812.h create mode 100644 drivers/chibios/ws2812_pwm.c create mode 100644 drivers/chibios/ws2812_spi.c (limited to 'drivers') diff --git a/drivers/arm/analog.c b/drivers/arm/analog.c deleted file mode 100644 index 6f6db6401..000000000 --- a/drivers/arm/analog.c +++ /dev/null @@ -1,276 +0,0 @@ -/* Copyright 2019 Drew Mills - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#include "quantum.h" -#include "analog.h" -#include "ch.h" -#include - -#if !HAL_USE_ADC -# error "You need to set HAL_USE_ADC to TRUE in your halconf.h to use the ADC." -#endif - -#if !STM32_ADC_USE_ADC1 && !STM32_ADC_USE_ADC2 && !STM32_ADC_USE_ADC3 && !STM32_ADC_USE_ADC4 -# error "You need to set one of the 'STM32_ADC_USE_ADCx' settings to TRUE in your mcuconf.h to use the ADC." -#endif - -#if STM32_ADC_DUAL_MODE -# error "STM32 ADC Dual Mode is not supported at this time." -#endif - -#if STM32_ADCV3_OVERSAMPLING -# error "STM32 ADCV3 Oversampling is not supported at this time." -#endif - -// Otherwise assume V3 -#if defined(STM32F0XX) || defined(STM32L0XX) -# define USE_ADCV1 -#elif defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) -# define USE_ADCV2 -#endif - -// BODGE to make v2 look like v1,3 and 4 -#ifdef USE_ADCV2 -# if !defined(ADC_SMPR_SMP_1P5) && defined(ADC_SAMPLE_3) -# define ADC_SMPR_SMP_1P5 ADC_SAMPLE_3 -# define ADC_SMPR_SMP_7P5 ADC_SAMPLE_15 -# define ADC_SMPR_SMP_13P5 ADC_SAMPLE_28 -# define ADC_SMPR_SMP_28P5 ADC_SAMPLE_56 -# define ADC_SMPR_SMP_41P5 ADC_SAMPLE_84 -# define ADC_SMPR_SMP_55P5 ADC_SAMPLE_112 -# define ADC_SMPR_SMP_71P5 ADC_SAMPLE_144 -# define ADC_SMPR_SMP_239P5 ADC_SAMPLE_480 -# endif - -# if !defined(ADC_SMPR_SMP_1P5) && defined(ADC_SAMPLE_1P5) -# define ADC_SMPR_SMP_1P5 ADC_SAMPLE_1P5 -# define ADC_SMPR_SMP_7P5 ADC_SAMPLE_7P5 -# define ADC_SMPR_SMP_13P5 ADC_SAMPLE_13P5 -# define ADC_SMPR_SMP_28P5 ADC_SAMPLE_28P5 -# define ADC_SMPR_SMP_41P5 ADC_SAMPLE_41P5 -# define ADC_SMPR_SMP_55P5 ADC_SAMPLE_55P5 -# define ADC_SMPR_SMP_71P5 ADC_SAMPLE_71P5 -# define ADC_SMPR_SMP_239P5 ADC_SAMPLE_239P5 -# endif - -// we still sample at 12bit, but scale down to the requested bit range -# define ADC_CFGR1_RES_12BIT 12 -# define ADC_CFGR1_RES_10BIT 10 -# define ADC_CFGR1_RES_8BIT 8 -# define ADC_CFGR1_RES_6BIT 6 -#endif - -/* User configurable ADC options */ -#ifndef ADC_COUNT -# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F4XX) -# define ADC_COUNT 1 -# elif defined(STM32F3XX) -# define ADC_COUNT 4 -# else -# error "ADC_COUNT has not been set for this ARM microcontroller." -# endif -#endif - -#ifndef ADC_NUM_CHANNELS -# define ADC_NUM_CHANNELS 1 -#elif ADC_NUM_CHANNELS != 1 -# error "The ARM ADC implementation currently only supports reading one channel at a time." -#endif - -#ifndef ADC_BUFFER_DEPTH -# define ADC_BUFFER_DEPTH 1 -#endif - -// For more sampling rate options, look at hal_adc_lld.h in ChibiOS -#ifndef ADC_SAMPLING_RATE -# define ADC_SAMPLING_RATE ADC_SMPR_SMP_1P5 -#endif - -// Options are 12, 10, 8, and 6 bit. -#ifndef ADC_RESOLUTION -# define ADC_RESOLUTION ADC_CFGR1_RES_10BIT -#endif - -static ADCConfig adcCfg = {}; -static adcsample_t sampleBuffer[ADC_NUM_CHANNELS * ADC_BUFFER_DEPTH]; - -// Initialize to max number of ADCs, set to empty object to initialize all to false. -static bool adcInitialized[ADC_COUNT] = {}; - -// TODO: add back TR handling??? -static ADCConversionGroup adcConversionGroup = { - .circular = FALSE, - .num_channels = (uint16_t)(ADC_NUM_CHANNELS), -#if defined(USE_ADCV1) - .cfgr1 = ADC_CFGR1_CONT | ADC_RESOLUTION, - .smpr = ADC_SAMPLING_RATE, -#elif defined(USE_ADCV2) -# if !defined(STM32F1XX) - .cr2 = ADC_CR2_SWSTART, // F103 seem very unhappy with, F401 seems very unhappy without... -# endif - .smpr2 = ADC_SMPR2_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN9(ADC_SAMPLING_RATE), - .smpr1 = ADC_SMPR1_SMP_AN10(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN11(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN12(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN13(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN14(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN15(ADC_SAMPLING_RATE), -#else - .cfgr = ADC_CFGR_CONT | ADC_RESOLUTION, - .smpr = {ADC_SMPR1_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN9(ADC_SAMPLING_RATE), ADC_SMPR2_SMP_AN10(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN11(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN12(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN13(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN14(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN15(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN16(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN17(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN18(ADC_SAMPLING_RATE)}, -#endif -}; - -// clang-format off -__attribute__((weak)) adc_mux pinToMux(pin_t pin) { - switch (pin) { -#if defined(STM32F0XX) - case A0: return TO_MUX( ADC_CHSELR_CHSEL0, 0 ); - case A1: return TO_MUX( ADC_CHSELR_CHSEL1, 0 ); - case A2: return TO_MUX( ADC_CHSELR_CHSEL2, 0 ); - case A3: return TO_MUX( ADC_CHSELR_CHSEL3, 0 ); - case A4: return TO_MUX( ADC_CHSELR_CHSEL4, 0 ); - case A5: return TO_MUX( ADC_CHSELR_CHSEL5, 0 ); - case A6: return TO_MUX( ADC_CHSELR_CHSEL6, 0 ); - case A7: return TO_MUX( ADC_CHSELR_CHSEL7, 0 ); - case B0: return TO_MUX( ADC_CHSELR_CHSEL8, 0 ); - case B1: return TO_MUX( ADC_CHSELR_CHSEL9, 0 ); - case C0: return TO_MUX( ADC_CHSELR_CHSEL10, 0 ); - case C1: return TO_MUX( ADC_CHSELR_CHSEL11, 0 ); - case C2: return TO_MUX( ADC_CHSELR_CHSEL12, 0 ); - case C3: return TO_MUX( ADC_CHSELR_CHSEL13, 0 ); - case C4: return TO_MUX( ADC_CHSELR_CHSEL14, 0 ); - case C5: return TO_MUX( ADC_CHSELR_CHSEL15, 0 ); -#elif defined(STM32F3XX) - case A0: return TO_MUX( ADC_CHANNEL_IN1, 0 ); - case A1: return TO_MUX( ADC_CHANNEL_IN2, 0 ); - case A2: return TO_MUX( ADC_CHANNEL_IN3, 0 ); - case A3: return TO_MUX( ADC_CHANNEL_IN4, 0 ); - case A4: return TO_MUX( ADC_CHANNEL_IN1, 1 ); - case A5: return TO_MUX( ADC_CHANNEL_IN2, 1 ); - case A6: return TO_MUX( ADC_CHANNEL_IN3, 1 ); - case A7: return TO_MUX( ADC_CHANNEL_IN4, 1 ); - case B0: return TO_MUX( ADC_CHANNEL_IN12, 2 ); - case B1: return TO_MUX( ADC_CHANNEL_IN1, 2 ); - case B2: return TO_MUX( ADC_CHANNEL_IN12, 1 ); - case B12: return TO_MUX( ADC_CHANNEL_IN2, 3 ); - case B13: return TO_MUX( ADC_CHANNEL_IN3, 3 ); - case B14: return TO_MUX( ADC_CHANNEL_IN4, 3 ); - case B15: return TO_MUX( ADC_CHANNEL_IN5, 3 ); - case C0: return TO_MUX( ADC_CHANNEL_IN6, 0 ); // Can also be ADC2 - case C1: return TO_MUX( ADC_CHANNEL_IN7, 0 ); // Can also be ADC2 - case C2: return TO_MUX( ADC_CHANNEL_IN8, 0 ); // Can also be ADC2 - case C3: return TO_MUX( ADC_CHANNEL_IN9, 0 ); // Can also be ADC2 - case C4: return TO_MUX( ADC_CHANNEL_IN5, 1 ); - case C5: return TO_MUX( ADC_CHANNEL_IN11, 1 ); - case D8: return TO_MUX( ADC_CHANNEL_IN12, 3 ); - case D9: return TO_MUX( ADC_CHANNEL_IN13, 3 ); - case D10: return TO_MUX( ADC_CHANNEL_IN7, 2 ); // Can also be ADC4 - case D11: return TO_MUX( ADC_CHANNEL_IN8, 2 ); // Can also be ADC4 - case D12: return TO_MUX( ADC_CHANNEL_IN9, 2 ); // Can also be ADC4 - case D13: return TO_MUX( ADC_CHANNEL_IN10, 2 ); // Can also be ADC4 - case D14: return TO_MUX( ADC_CHANNEL_IN11, 2 ); // Can also be ADC4 - case E7: return TO_MUX( ADC_CHANNEL_IN13, 2 ); - case E8: return TO_MUX( ADC_CHANNEL_IN6, 2 ); // Can also be ADC4 - case E9: return TO_MUX( ADC_CHANNEL_IN2, 2 ); - case E10: return TO_MUX( ADC_CHANNEL_IN14, 2 ); - case E11: return TO_MUX( ADC_CHANNEL_IN15, 2 ); - case E12: return TO_MUX( ADC_CHANNEL_IN16, 2 ); - case E13: return TO_MUX( ADC_CHANNEL_IN3, 2 ); - case E14: return TO_MUX( ADC_CHANNEL_IN1, 3 ); - case E15: return TO_MUX( ADC_CHANNEL_IN2, 3 ); - case F2: return TO_MUX( ADC_CHANNEL_IN10, 0 ); // Can also be ADC2 - case F4: return TO_MUX( ADC_CHANNEL_IN5, 0 ); -#elif defined(STM32F4XX) // TODO: add all pins - case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 ); - //case A1: return TO_MUX( ADC_CHANNEL_IN1, 0 ); -#elif defined(STM32F1XX) // TODO: add all pins - case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 ); -#endif - } - - // return an adc that would never be used so intToADCDriver will bail out - return TO_MUX(0, 0xFF); -} -// clang-format on - -static inline ADCDriver* intToADCDriver(uint8_t adcInt) { - switch (adcInt) { -#if STM32_ADC_USE_ADC1 - case 0: - return &ADCD1; -#endif -#if STM32_ADC_USE_ADC2 - case 1: - return &ADCD2; -#endif -#if STM32_ADC_USE_ADC3 - case 2: - return &ADCD3; -#endif -#if STM32_ADC_USE_ADC4 - case 3: - return &ADCD4; -#endif - } - - return NULL; -} - -static inline void manageAdcInitializationDriver(uint8_t adc, ADCDriver* adcDriver) { - if (!adcInitialized[adc]) { - adcStart(adcDriver, &adcCfg); - adcInitialized[adc] = true; - } -} - -int16_t analogReadPin(pin_t pin) { - palSetLineMode(pin, PAL_MODE_INPUT_ANALOG); - - return adc_read(pinToMux(pin)); -} - -int16_t analogReadPinAdc(pin_t pin, uint8_t adc) { - palSetLineMode(pin, PAL_MODE_INPUT_ANALOG); - - adc_mux target = pinToMux(pin); - target.adc = adc; - return adc_read(target); -} - -int16_t adc_read(adc_mux mux) { -#if defined(USE_ADCV1) - // TODO: fix previous assumption of only 1 input... - adcConversionGroup.chselr = 1 << mux.input; /*no macro to convert N to ADC_CHSELR_CHSEL1*/ -#elif defined(USE_ADCV2) - adcConversionGroup.sqr3 = ADC_SQR3_SQ1_N(mux.input); -#else - adcConversionGroup.sqr[0] = ADC_SQR1_SQ1_N(mux.input); -#endif - - ADCDriver* targetDriver = intToADCDriver(mux.adc); - if (!targetDriver) { - return 0; - } - - manageAdcInitializationDriver(mux.adc, targetDriver); - if (adcConvert(targetDriver, &adcConversionGroup, &sampleBuffer[0], ADC_BUFFER_DEPTH) != MSG_OK) { - return 0; - } - -#ifdef USE_ADCV2 - // fake 12-bit -> N-bit scale - return (*sampleBuffer) >> (12 - ADC_RESOLUTION); -#else - // already handled as part of adcConvert - return *sampleBuffer; -#endif -} diff --git a/drivers/arm/analog.h b/drivers/arm/analog.h deleted file mode 100644 index e61c39426..000000000 --- a/drivers/arm/analog.h +++ /dev/null @@ -1,41 +0,0 @@ -/* Copyright 2019 Drew Mills - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#pragma once - -#include -#include "quantum.h" - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct { - uint16_t input; - uint8_t adc; -} adc_mux; -#define TO_MUX(i, a) \ - (adc_mux) { i, a } - -int16_t analogReadPin(pin_t pin); -int16_t analogReadPinAdc(pin_t pin, uint8_t adc); -adc_mux pinToMux(pin_t pin); - -int16_t adc_read(adc_mux mux); - -#ifdef __cplusplus -} -#endif diff --git a/drivers/arm/i2c_master.c b/drivers/arm/i2c_master.c deleted file mode 100644 index ede915fa4..000000000 --- a/drivers/arm/i2c_master.c +++ /dev/null @@ -1,114 +0,0 @@ -/* Copyright 2018 Jack Humbert - * Copyright 2018 Yiancar - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -/* This library is only valid for STM32 processors. - * This library follows the convention of the AVR i2c_master library. - * As a result addresses are expected to be already shifted (addr << 1). - * I2CD1 is the default driver which corresponds to pins B6 and B7. This - * can be changed. - * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that - * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file. Pins B6 and B7 are used - * but using any other I2C pins should be trivial. - */ -#include "quantum.h" -#include "i2c_master.h" -#include -#include - -static uint8_t i2c_address; - -static const I2CConfig i2cconfig = { -#ifdef USE_I2CV1 - I2C1_OPMODE, - I2C1_CLOCK_SPEED, - I2C1_DUTY_CYCLE, -#else - // This configures the I2C clock to 400khz assuming a 72Mhz clock - // For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html - STM32_TIMINGR_PRESC(I2C1_TIMINGR_PRESC) | STM32_TIMINGR_SCLDEL(I2C1_TIMINGR_SCLDEL) | STM32_TIMINGR_SDADEL(I2C1_TIMINGR_SDADEL) | STM32_TIMINGR_SCLH(I2C1_TIMINGR_SCLH) | STM32_TIMINGR_SCLL(I2C1_TIMINGR_SCLL), 0, 0 -#endif -}; - -static i2c_status_t chibios_to_qmk(const msg_t* status) { - switch (*status) { - case I2C_NO_ERROR: - return I2C_STATUS_SUCCESS; - case I2C_TIMEOUT: - return I2C_STATUS_TIMEOUT; - // I2C_BUS_ERROR, I2C_ARBITRATION_LOST, I2C_ACK_FAILURE, I2C_OVERRUN, I2C_PEC_ERROR, I2C_SMB_ALERT - default: - return I2C_STATUS_ERROR; - } -} - -__attribute__((weak)) void i2c_init(void) { - // Try releasing special pins for a short time - palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_INPUT); - palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_INPUT); - - chThdSleepMilliseconds(10); -#if defined(USE_GPIOV1) - palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_STM32_ALTERNATE_OPENDRAIN); - palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_STM32_ALTERNATE_OPENDRAIN); -#else - palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN); - palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN); -#endif -} - -i2c_status_t i2c_start(uint8_t address) { - i2c_address = address; - i2cStart(&I2C_DRIVER, &i2cconfig); - return I2C_STATUS_SUCCESS; -} - -i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = address; - i2cStart(&I2C_DRIVER, &i2cconfig); - msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, TIME_MS2I(timeout)); - return chibios_to_qmk(&status); -} - -i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = address; - i2cStart(&I2C_DRIVER, &i2cconfig); - msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, TIME_MS2I(timeout)); - return chibios_to_qmk(&status); -} - -i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = devaddr; - i2cStart(&I2C_DRIVER, &i2cconfig); - - uint8_t complete_packet[length + 1]; - for (uint8_t i = 0; i < length; i++) { - complete_packet[i + 1] = data[i]; - } - complete_packet[0] = regaddr; - - msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, TIME_MS2I(timeout)); - return chibios_to_qmk(&status); -} - -i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = devaddr; - i2cStart(&I2C_DRIVER, &i2cconfig); - msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), ®addr, 1, data, length, TIME_MS2I(timeout)); - return chibios_to_qmk(&status); -} - -void i2c_stop(void) { i2cStop(&I2C_DRIVER); } diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h deleted file mode 100644 index 3d3891289..000000000 --- a/drivers/arm/i2c_master.h +++ /dev/null @@ -1,106 +0,0 @@ -/* Copyright 2018 Jack Humbert - * Copyright 2018 Yiancar - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -/* This library follows the convention of the AVR i2c_master library. - * As a result addresses are expected to be already shifted (addr << 1). - * I2CD1 is the default driver which corresponds to pins B6 and B7. This - * can be changed. - * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that - * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file. - */ -#pragma once - -#include "ch.h" -#include - -#ifdef I2C1_BANK -# define I2C1_SCL_BANK I2C1_BANK -# define I2C1_SDA_BANK I2C1_BANK -#endif - -#ifndef I2C1_SCL_BANK -# define I2C1_SCL_BANK GPIOB -#endif - -#ifndef I2C1_SDA_BANK -# define I2C1_SDA_BANK GPIOB -#endif - -#ifndef I2C1_SCL -# define I2C1_SCL 6 -#endif -#ifndef I2C1_SDA -# define I2C1_SDA 7 -#endif - -#ifdef USE_I2CV1 -# ifndef I2C1_OPMODE -# define I2C1_OPMODE OPMODE_I2C -# endif -# ifndef I2C1_CLOCK_SPEED -# define I2C1_CLOCK_SPEED 100000 /* 400000 */ -# endif -# ifndef I2C1_DUTY_CYCLE -# define I2C1_DUTY_CYCLE STD_DUTY_CYCLE /* FAST_DUTY_CYCLE_2 */ -# endif -#else -// The default timing values below configures the I2C clock to 400khz assuming a 72Mhz clock -// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html -# ifndef I2C1_TIMINGR_PRESC -# define I2C1_TIMINGR_PRESC 0U -# endif -# ifndef I2C1_TIMINGR_SCLDEL -# define I2C1_TIMINGR_SCLDEL 7U -# endif -# ifndef I2C1_TIMINGR_SDADEL -# define I2C1_TIMINGR_SDADEL 0U -# endif -# ifndef I2C1_TIMINGR_SCLH -# define I2C1_TIMINGR_SCLH 38U -# endif -# ifndef I2C1_TIMINGR_SCLL -# define I2C1_TIMINGR_SCLL 129U -# endif -#endif - -#ifndef I2C_DRIVER -# define I2C_DRIVER I2CD1 -#endif - -#ifndef USE_GPIOV1 -// The default PAL alternate modes are used to signal that the pins are used for I2C -# ifndef I2C1_SCL_PAL_MODE -# define I2C1_SCL_PAL_MODE 4 -# endif -# ifndef I2C1_SDA_PAL_MODE -# define I2C1_SDA_PAL_MODE 4 -# endif -#endif - -typedef int16_t i2c_status_t; - -#define I2C_STATUS_SUCCESS (0) -#define I2C_STATUS_ERROR (-1) -#define I2C_STATUS_TIMEOUT (-2) - -void i2c_init(void); -i2c_status_t i2c_start(uint8_t address); -i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout); -i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout); -i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout); -i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout); -void i2c_stop(void); diff --git a/drivers/arm/ws2812.c b/drivers/arm/ws2812.c deleted file mode 100644 index bdca565d8..000000000 --- a/drivers/arm/ws2812.c +++ /dev/null @@ -1,95 +0,0 @@ -#include "quantum.h" -#include "ws2812.h" -#include "ch.h" -#include "hal.h" - -/* Adapted from https://github.com/bigjosh/SimpleNeoPixelDemo/ */ - -#ifndef NOP_FUDGE -# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F3XX) || defined(STM32F4XX) || defined(STM32L0XX) -# define NOP_FUDGE 0.4 -# else -# error("NOP_FUDGE configuration required") -# define NOP_FUDGE 1 // this just pleases the compile so the above error is easier to spot -# endif -#endif - -#define NUMBER_NOPS 6 -#define CYCLES_PER_SEC (STM32_SYSCLK / NUMBER_NOPS * NOP_FUDGE) -#define NS_PER_SEC (1000000000L) // Note that this has to be SIGNED since we want to be able to check for negative values of derivatives -#define NS_PER_CYCLE (NS_PER_SEC / CYCLES_PER_SEC) -#define NS_TO_CYCLES(n) ((n) / NS_PER_CYCLE) - -#define wait_ns(x) \ - do { \ - for (int i = 0; i < NS_TO_CYCLES(x); i++) { \ - __asm__ volatile("nop\n\t" \ - "nop\n\t" \ - "nop\n\t" \ - "nop\n\t" \ - "nop\n\t" \ - "nop\n\t"); \ - } \ - } while (0) - -// These are the timing constraints taken mostly from the WS2812 datasheets -// These are chosen to be conservative and avoid problems rather than for maximum throughput - -#define T1H 900 // Width of a 1 bit in ns -#define T1L (1250 - T1H) // Width of a 1 bit in ns - -#define T0H 350 // Width of a 0 bit in ns -#define T0L (1250 - T0H) // Width of a 0 bit in ns - -// The reset gap can be 6000 ns, but depending on the LED strip it may have to be increased -// to values like 600000 ns. If it is too small, the pixels will show nothing most of the time. -#define RES 10000 // Width of the low gap between bits to cause a frame to latch - -void sendByte(uint8_t byte) { - // WS2812 protocol wants most significant bits first - for (unsigned char bit = 0; bit < 8; bit++) { - bool is_one = byte & (1 << (7 - bit)); - // using something like wait_ns(is_one ? T1L : T0L) here throws off timings - if (is_one) { - // 1 - writePinHigh(RGB_DI_PIN); - wait_ns(T1H); - writePinLow(RGB_DI_PIN); - wait_ns(T1L); - } else { - // 0 - writePinHigh(RGB_DI_PIN); - wait_ns(T0H); - writePinLow(RGB_DI_PIN); - wait_ns(T0L); - } - } -} - -void ws2812_init(void) { setPinOutput(RGB_DI_PIN); } - -// Setleds for standard RGB -void ws2812_setleds(LED_TYPE *ledarray, uint16_t leds) { - static bool s_init = false; - if (!s_init) { - ws2812_init(); - s_init = true; - } - - // this code is very time dependent, so we need to disable interrupts - chSysLock(); - - for (uint8_t i = 0; i < leds; i++) { - // WS2812 protocol dictates grb order - sendByte(ledarray[i].g); - sendByte(ledarray[i].r); - sendByte(ledarray[i].b); -#ifdef RGBW - sendByte(ledarray[i].w); -#endif - } - - wait_ns(RES); - - chSysUnlock(); -} diff --git a/drivers/arm/ws2812.h b/drivers/arm/ws2812.h deleted file mode 100644 index 41c22a00b..000000000 --- a/drivers/arm/ws2812.h +++ /dev/null @@ -1,16 +0,0 @@ -#pragma once - -#include "quantum/color.h" - -/* User Interface - * - * Input: - * ledarray: An array of GRB data describing the LED colors - * number_of_leds: The number of LEDs to write - * - * The functions will perform the following actions: - * - Set the data-out pin as output - * - Send out the LED data - * - Wait 50us to reset the LEDs - */ -void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds); diff --git a/drivers/arm/ws2812_pwm.c b/drivers/arm/ws2812_pwm.c deleted file mode 100644 index 1a1721029..000000000 --- a/drivers/arm/ws2812_pwm.c +++ /dev/null @@ -1,207 +0,0 @@ -#include "ws2812.h" -#include "quantum.h" -#include "hal.h" - -/* Adapted from https://github.com/joewa/WS2812-LED-Driver_ChibiOS/ */ - -#ifdef RGBW -# error "RGBW not supported" -#endif - -#ifndef WS2812_PWM_DRIVER -# define WS2812_PWM_DRIVER PWMD2 // TIMx -#endif -#ifndef WS2812_PWM_CHANNEL -# define WS2812_PWM_CHANNEL 2 // Channel -#endif -#ifndef WS2812_PWM_PAL_MODE -# define WS2812_PWM_PAL_MODE 2 // DI Pin's alternate function value -#endif -#ifndef WS2812_DMA_STREAM -# define WS2812_DMA_STREAM STM32_DMA1_STREAM2 // DMA Stream for TIMx_UP -#endif -#ifndef WS2812_DMA_CHANNEL -# define WS2812_DMA_CHANNEL 2 // DMA Channel for TIMx_UP -#endif - -#ifndef WS2812_PWM_TARGET_PERIOD -//# define WS2812_PWM_TARGET_PERIOD 800000 // Original code is 800k...? -# define WS2812_PWM_TARGET_PERIOD 80000 // TODO: work out why 10x less on f303/f4x1 -#endif - -/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ - -#define WS2812_PWM_FREQUENCY (STM32_SYSCLK / 2) /**< Clock frequency of PWM, must be valid with respect to system clock! */ -#define WS2812_PWM_PERIOD (WS2812_PWM_FREQUENCY / WS2812_PWM_TARGET_PERIOD) /**< Clock period in ticks. 1 / 800kHz = 1.25 uS (as per datasheet) */ - -/** - * @brief Number of bit-periods to hold the data line low at the end of a frame - * - * The reset period for each frame must be at least 50 uS; so we add in 50 bit-times - * of zeroes at the end. (50 bits)*(1.25 uS/bit) = 62.5 uS, which gives us some - * slack in the timing requirements - */ -#define WS2812_RESET_BIT_N (50) -#define WS2812_COLOR_BIT_N (RGBLED_NUM * 24) /**< Number of data bits */ -#define WS2812_BIT_N (WS2812_COLOR_BIT_N + WS2812_RESET_BIT_N) /**< Total number of bits in a frame */ - -/** - * @brief High period for a zero, in ticks - * - * Per the datasheet: - * WS2812: - * - T0H: 200 nS to 500 nS, inclusive - * - T0L: 650 nS to 950 nS, inclusive - * WS2812B: - * - T0H: 200 nS to 500 nS, inclusive - * - T0L: 750 nS to 1050 nS, inclusive - * - * The duty cycle is calculated for a high period of 350 nS. - */ -#define WS2812_DUTYCYCLE_0 (WS2812_PWM_FREQUENCY / (1000000000 / 350)) - -/** - * @brief High period for a one, in ticks - * - * Per the datasheet: - * WS2812: - * - T1H: 550 nS to 850 nS, inclusive - * - T1L: 450 nS to 750 nS, inclusive - * WS2812B: - * - T1H: 750 nS to 1050 nS, inclusive - * - T1L: 200 nS to 500 nS, inclusive - * - * The duty cycle is calculated for a high period of 800 nS. - * This is in the middle of the specifications of the WS2812 and WS2812B. - */ -#define WS2812_DUTYCYCLE_1 (WS2812_PWM_FREQUENCY / (1000000000 / 800)) - -/* --- PRIVATE MACROS ------------------------------------------------------- */ - -/** - * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given bit - * - * @param[in] led: The led index [0, @ref RGBLED_NUM) - * @param[in] byte: The byte number [0, 2] - * @param[in] bit: The bit number [0, 7] - * - * @return The bit index - */ -#define WS2812_BIT(led, byte, bit) (24 * (led) + 8 * (byte) + (7 - (bit))) - -/** - * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given red bit - * - * @note The red byte is the middle byte in the color packet - * - * @param[in] led: The led index [0, @ref RGBLED_NUM) - * @param[in] bit: The bit number [0, 7] - * - * @return The bit index - */ -#define WS2812_RED_BIT(led, bit) WS2812_BIT((led), 1, (bit)) - -/** - * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given green bit - * - * @note The red byte is the first byte in the color packet - * - * @param[in] led: The led index [0, @ref RGBLED_NUM) - * @param[in] bit: The bit number [0, 7] - * - * @return The bit index - */ -#define WS2812_GREEN_BIT(led, bit) WS2812_BIT((led), 0, (bit)) - -/** - * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given blue bit - * - * @note The red byte is the last byte in the color packet - * - * @param[in] led: The led index [0, @ref RGBLED_NUM) - * @param[in] bit: The bit index [0, 7] - * - * @return The bit index - */ -#define WS2812_BLUE_BIT(led, bit) WS2812_BIT((led), 2, (bit)) - -/* --- PRIVATE VARIABLES ---------------------------------------------------- */ - -static uint32_t ws2812_frame_buffer[WS2812_BIT_N + 1]; /**< Buffer for a frame */ - -/* --- PUBLIC FUNCTIONS ----------------------------------------------------- */ -/* - * Gedanke: Double-buffer type transactions: double buffer transfers using two memory pointers for -the memory (while the DMA is reading/writing from/to a buffer, the application can -write/read to/from the other buffer). - */ - -void ws2812_init(void) { - // Initialize led frame buffer - uint32_t i; - for (i = 0; i < WS2812_COLOR_BIT_N; i++) ws2812_frame_buffer[i] = WS2812_DUTYCYCLE_0; // All color bits are zero duty cycle - for (i = 0; i < WS2812_RESET_BIT_N; i++) ws2812_frame_buffer[i + WS2812_COLOR_BIT_N] = 0; // All reset bits are zero - -#if defined(USE_GPIOV1) - palSetLineMode(RGB_DI_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL); -#else - palSetLineMode(RGB_DI_PIN, PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING); -#endif - - // PWM Configuration - //#pragma GCC diagnostic ignored "-Woverride-init" // Turn off override-init warning for this struct. We use the overriding ability to set a "default" channel config - static const PWMConfig ws2812_pwm_config = { - .frequency = WS2812_PWM_FREQUENCY, - .period = WS2812_PWM_PERIOD, // Mit dieser Periode wird UDE-Event erzeugt und ein neuer Wert (Länge WS2812_BIT_N) vom DMA ins CCR geschrieben - .callback = NULL, - .channels = - { - [0 ... 3] = {.mode = PWM_OUTPUT_DISABLED, .callback = NULL}, // Channels default to disabled - [WS2812_PWM_CHANNEL - 1] = {.mode = PWM_OUTPUT_ACTIVE_HIGH, .callback = NULL}, // Turn on the channel we care about - }, - .cr2 = 0, - .dier = TIM_DIER_UDE, // DMA on update event for next period - }; - //#pragma GCC diagnostic pop // Restore command-line warning options - - // Configure DMA - // dmaInit(); // Joe added this - dmaStreamAlloc(WS2812_DMA_STREAM - STM32_DMA1_STREAM1, 10, NULL, NULL); - dmaStreamSetPeripheral(WS2812_DMA_STREAM, &(WS2812_PWM_DRIVER.tim->CCR[WS2812_PWM_CHANNEL - 1])); // Ziel ist der An-Zeit im Cap-Comp-Register - dmaStreamSetMemory0(WS2812_DMA_STREAM, ws2812_frame_buffer); - dmaStreamSetTransactionSize(WS2812_DMA_STREAM, WS2812_BIT_N); - dmaStreamSetMode(WS2812_DMA_STREAM, STM32_DMA_CR_CHSEL(WS2812_DMA_CHANNEL) | STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_WORD | STM32_DMA_CR_MSIZE_WORD | STM32_DMA_CR_MINC | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(3)); - // M2P: Memory 2 Periph; PL: Priority Level - - // Start DMA - dmaStreamEnable(WS2812_DMA_STREAM); - - // Configure PWM - // NOTE: It's required that preload be enabled on the timer channel CCR register. This is currently enabled in the - // ChibiOS driver code, so we don't have to do anything special to the timer. If we did, we'd have to start the timer, - // disable counting, enable the channel, and then make whatever configuration changes we need. - pwmStart(&WS2812_PWM_DRIVER, &ws2812_pwm_config); - pwmEnableChannel(&WS2812_PWM_DRIVER, WS2812_PWM_CHANNEL - 1, 0); // Initial period is 0; output will be low until first duty cycle is DMA'd in -} - -void ws2812_write_led(uint16_t led_number, uint8_t r, uint8_t g, uint8_t b) { - // Write color to frame buffer - for (uint8_t bit = 0; bit < 8; bit++) { - ws2812_frame_buffer[WS2812_RED_BIT(led_number, bit)] = ((r >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0; - ws2812_frame_buffer[WS2812_GREEN_BIT(led_number, bit)] = ((g >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0; - ws2812_frame_buffer[WS2812_BLUE_BIT(led_number, bit)] = ((b >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0; - } -} - -// Setleds for standard RGB -void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) { - static bool s_init = false; - if (!s_init) { - ws2812_init(); - s_init = true; - } - - for (uint16_t i = 0; i < leds; i++) { - ws2812_write_led(i, ledarray[i].r, ledarray[i].g, ledarray[i].b); - } -} diff --git a/drivers/arm/ws2812_spi.c b/drivers/arm/ws2812_spi.c deleted file mode 100644 index 36e08e39e..000000000 --- a/drivers/arm/ws2812_spi.c +++ /dev/null @@ -1,90 +0,0 @@ -#include "quantum.h" -#include "ws2812.h" - -/* Adapted from https://github.com/gamazeps/ws2812b-chibios-SPIDMA/ */ - -#ifdef RGBW -# error "RGBW not supported" -#endif - -// Define the spi your LEDs are plugged to here -#ifndef WS2812_SPI -# define WS2812_SPI SPID1 -#endif - -#ifndef WS2812_SPI_MOSI_PAL_MODE -# define WS2812_SPI_MOSI_PAL_MODE 5 -#endif - -#define BYTES_FOR_LED_BYTE 4 -#define NB_COLORS 3 -#define BYTES_FOR_LED (BYTES_FOR_LED_BYTE * NB_COLORS) -#define DATA_SIZE (BYTES_FOR_LED * RGBLED_NUM) -#define RESET_SIZE 200 -#define PREAMBLE_SIZE 4 - -static uint8_t txbuf[PREAMBLE_SIZE + DATA_SIZE + RESET_SIZE] = {0}; - -/* - * As the trick here is to use the SPI to send a huge pattern of 0 and 1 to - * the ws2812b protocol, we use this helper function to translate bytes into - * 0s and 1s for the LED (with the appropriate timing). - */ -static uint8_t get_protocol_eq(uint8_t data, int pos) { - uint8_t eq = 0; - if (data & (1 << (2 * (3 - pos)))) - eq = 0b1110; - else - eq = 0b1000; - if (data & (2 << (2 * (3 - pos)))) - eq += 0b11100000; - else - eq += 0b10000000; - return eq; -} - -static void set_led_color_rgb(LED_TYPE color, int pos) { - uint8_t* tx_start = &txbuf[PREAMBLE_SIZE]; - - for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + j] = get_protocol_eq(color.g, j); - for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE + j] = get_protocol_eq(color.r, j); - for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE * 2 + j] = get_protocol_eq(color.b, j); -} - -void ws2812_init(void) { -#if defined(USE_GPIOV1) - palSetLineMode(RGB_DI_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL); -#else - palSetLineMode(RGB_DI_PIN, PAL_MODE_ALTERNATE(WS2812_SPI_MOSI_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL); -#endif - - // TODO: more dynamic baudrate - static const SPIConfig spicfg = { - 0, NULL, PAL_PORT(RGB_DI_PIN), PAL_PAD(RGB_DI_PIN), - SPI_CR1_BR_1 | SPI_CR1_BR_0 // baudrate : fpclk / 8 => 1tick is 0.32us (2.25 MHz) - }; - - spiAcquireBus(&WS2812_SPI); /* Acquire ownership of the bus. */ - spiStart(&WS2812_SPI, &spicfg); /* Setup transfer parameters. */ - spiSelect(&WS2812_SPI); /* Slave Select assertion. */ -} - -void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) { - static bool s_init = false; - if (!s_init) { - ws2812_init(); - s_init = true; - } - - for (uint8_t i = 0; i < leds; i++) { - set_led_color_rgb(ledarray[i], i); - } - - // Send async - each led takes ~0.03ms, 50 leds ~1.5ms, animations flushing faster than send will cause issues. - // Instead spiSend can be used to send synchronously (or the thread logic can be added back). -#ifdef WS2812_SPI_SYNC - spiSend(&WS2812_SPI, sizeof(txbuf) / sizeof(txbuf[0]), txbuf); -#else - spiStartSend(&WS2812_SPI, sizeof(txbuf) / sizeof(txbuf[0]), txbuf); -#endif -} diff --git a/drivers/chibios/analog.c b/drivers/chibios/analog.c new file mode 100644 index 000000000..6f6db6401 --- /dev/null +++ b/drivers/chibios/analog.c @@ -0,0 +1,276 @@ +/* Copyright 2019 Drew Mills + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "quantum.h" +#include "analog.h" +#include "ch.h" +#include + +#if !HAL_USE_ADC +# error "You need to set HAL_USE_ADC to TRUE in your halconf.h to use the ADC." +#endif + +#if !STM32_ADC_USE_ADC1 && !STM32_ADC_USE_ADC2 && !STM32_ADC_USE_ADC3 && !STM32_ADC_USE_ADC4 +# error "You need to set one of the 'STM32_ADC_USE_ADCx' settings to TRUE in your mcuconf.h to use the ADC." +#endif + +#if STM32_ADC_DUAL_MODE +# error "STM32 ADC Dual Mode is not supported at this time." +#endif + +#if STM32_ADCV3_OVERSAMPLING +# error "STM32 ADCV3 Oversampling is not supported at this time." +#endif + +// Otherwise assume V3 +#if defined(STM32F0XX) || defined(STM32L0XX) +# define USE_ADCV1 +#elif defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) +# define USE_ADCV2 +#endif + +// BODGE to make v2 look like v1,3 and 4 +#ifdef USE_ADCV2 +# if !defined(ADC_SMPR_SMP_1P5) && defined(ADC_SAMPLE_3) +# define ADC_SMPR_SMP_1P5 ADC_SAMPLE_3 +# define ADC_SMPR_SMP_7P5 ADC_SAMPLE_15 +# define ADC_SMPR_SMP_13P5 ADC_SAMPLE_28 +# define ADC_SMPR_SMP_28P5 ADC_SAMPLE_56 +# define ADC_SMPR_SMP_41P5 ADC_SAMPLE_84 +# define ADC_SMPR_SMP_55P5 ADC_SAMPLE_112 +# define ADC_SMPR_SMP_71P5 ADC_SAMPLE_144 +# define ADC_SMPR_SMP_239P5 ADC_SAMPLE_480 +# endif + +# if !defined(ADC_SMPR_SMP_1P5) && defined(ADC_SAMPLE_1P5) +# define ADC_SMPR_SMP_1P5 ADC_SAMPLE_1P5 +# define ADC_SMPR_SMP_7P5 ADC_SAMPLE_7P5 +# define ADC_SMPR_SMP_13P5 ADC_SAMPLE_13P5 +# define ADC_SMPR_SMP_28P5 ADC_SAMPLE_28P5 +# define ADC_SMPR_SMP_41P5 ADC_SAMPLE_41P5 +# define ADC_SMPR_SMP_55P5 ADC_SAMPLE_55P5 +# define ADC_SMPR_SMP_71P5 ADC_SAMPLE_71P5 +# define ADC_SMPR_SMP_239P5 ADC_SAMPLE_239P5 +# endif + +// we still sample at 12bit, but scale down to the requested bit range +# define ADC_CFGR1_RES_12BIT 12 +# define ADC_CFGR1_RES_10BIT 10 +# define ADC_CFGR1_RES_8BIT 8 +# define ADC_CFGR1_RES_6BIT 6 +#endif + +/* User configurable ADC options */ +#ifndef ADC_COUNT +# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F4XX) +# define ADC_COUNT 1 +# elif defined(STM32F3XX) +# define ADC_COUNT 4 +# else +# error "ADC_COUNT has not been set for this ARM microcontroller." +# endif +#endif + +#ifndef ADC_NUM_CHANNELS +# define ADC_NUM_CHANNELS 1 +#elif ADC_NUM_CHANNELS != 1 +# error "The ARM ADC implementation currently only supports reading one channel at a time." +#endif + +#ifndef ADC_BUFFER_DEPTH +# define ADC_BUFFER_DEPTH 1 +#endif + +// For more sampling rate options, look at hal_adc_lld.h in ChibiOS +#ifndef ADC_SAMPLING_RATE +# define ADC_SAMPLING_RATE ADC_SMPR_SMP_1P5 +#endif + +// Options are 12, 10, 8, and 6 bit. +#ifndef ADC_RESOLUTION +# define ADC_RESOLUTION ADC_CFGR1_RES_10BIT +#endif + +static ADCConfig adcCfg = {}; +static adcsample_t sampleBuffer[ADC_NUM_CHANNELS * ADC_BUFFER_DEPTH]; + +// Initialize to max number of ADCs, set to empty object to initialize all to false. +static bool adcInitialized[ADC_COUNT] = {}; + +// TODO: add back TR handling??? +static ADCConversionGroup adcConversionGroup = { + .circular = FALSE, + .num_channels = (uint16_t)(ADC_NUM_CHANNELS), +#if defined(USE_ADCV1) + .cfgr1 = ADC_CFGR1_CONT | ADC_RESOLUTION, + .smpr = ADC_SAMPLING_RATE, +#elif defined(USE_ADCV2) +# if !defined(STM32F1XX) + .cr2 = ADC_CR2_SWSTART, // F103 seem very unhappy with, F401 seems very unhappy without... +# endif + .smpr2 = ADC_SMPR2_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN9(ADC_SAMPLING_RATE), + .smpr1 = ADC_SMPR1_SMP_AN10(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN11(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN12(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN13(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN14(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN15(ADC_SAMPLING_RATE), +#else + .cfgr = ADC_CFGR_CONT | ADC_RESOLUTION, + .smpr = {ADC_SMPR1_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN9(ADC_SAMPLING_RATE), ADC_SMPR2_SMP_AN10(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN11(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN12(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN13(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN14(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN15(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN16(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN17(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN18(ADC_SAMPLING_RATE)}, +#endif +}; + +// clang-format off +__attribute__((weak)) adc_mux pinToMux(pin_t pin) { + switch (pin) { +#if defined(STM32F0XX) + case A0: return TO_MUX( ADC_CHSELR_CHSEL0, 0 ); + case A1: return TO_MUX( ADC_CHSELR_CHSEL1, 0 ); + case A2: return TO_MUX( ADC_CHSELR_CHSEL2, 0 ); + case A3: return TO_MUX( ADC_CHSELR_CHSEL3, 0 ); + case A4: return TO_MUX( ADC_CHSELR_CHSEL4, 0 ); + case A5: return TO_MUX( ADC_CHSELR_CHSEL5, 0 ); + case A6: return TO_MUX( ADC_CHSELR_CHSEL6, 0 ); + case A7: return TO_MUX( ADC_CHSELR_CHSEL7, 0 ); + case B0: return TO_MUX( ADC_CHSELR_CHSEL8, 0 ); + case B1: return TO_MUX( ADC_CHSELR_CHSEL9, 0 ); + case C0: return TO_MUX( ADC_CHSELR_CHSEL10, 0 ); + case C1: return TO_MUX( ADC_CHSELR_CHSEL11, 0 ); + case C2: return TO_MUX( ADC_CHSELR_CHSEL12, 0 ); + case C3: return TO_MUX( ADC_CHSELR_CHSEL13, 0 ); + case C4: return TO_MUX( ADC_CHSELR_CHSEL14, 0 ); + case C5: return TO_MUX( ADC_CHSELR_CHSEL15, 0 ); +#elif defined(STM32F3XX) + case A0: return TO_MUX( ADC_CHANNEL_IN1, 0 ); + case A1: return TO_MUX( ADC_CHANNEL_IN2, 0 ); + case A2: return TO_MUX( ADC_CHANNEL_IN3, 0 ); + case A3: return TO_MUX( ADC_CHANNEL_IN4, 0 ); + case A4: return TO_MUX( ADC_CHANNEL_IN1, 1 ); + case A5: return TO_MUX( ADC_CHANNEL_IN2, 1 ); + case A6: return TO_MUX( ADC_CHANNEL_IN3, 1 ); + case A7: return TO_MUX( ADC_CHANNEL_IN4, 1 ); + case B0: return TO_MUX( ADC_CHANNEL_IN12, 2 ); + case B1: return TO_MUX( ADC_CHANNEL_IN1, 2 ); + case B2: return TO_MUX( ADC_CHANNEL_IN12, 1 ); + case B12: return TO_MUX( ADC_CHANNEL_IN2, 3 ); + case B13: return TO_MUX( ADC_CHANNEL_IN3, 3 ); + case B14: return TO_MUX( ADC_CHANNEL_IN4, 3 ); + case B15: return TO_MUX( ADC_CHANNEL_IN5, 3 ); + case C0: return TO_MUX( ADC_CHANNEL_IN6, 0 ); // Can also be ADC2 + case C1: return TO_MUX( ADC_CHANNEL_IN7, 0 ); // Can also be ADC2 + case C2: return TO_MUX( ADC_CHANNEL_IN8, 0 ); // Can also be ADC2 + case C3: return TO_MUX( ADC_CHANNEL_IN9, 0 ); // Can also be ADC2 + case C4: return TO_MUX( ADC_CHANNEL_IN5, 1 ); + case C5: return TO_MUX( ADC_CHANNEL_IN11, 1 ); + case D8: return TO_MUX( ADC_CHANNEL_IN12, 3 ); + case D9: return TO_MUX( ADC_CHANNEL_IN13, 3 ); + case D10: return TO_MUX( ADC_CHANNEL_IN7, 2 ); // Can also be ADC4 + case D11: return TO_MUX( ADC_CHANNEL_IN8, 2 ); // Can also be ADC4 + case D12: return TO_MUX( ADC_CHANNEL_IN9, 2 ); // Can also be ADC4 + case D13: return TO_MUX( ADC_CHANNEL_IN10, 2 ); // Can also be ADC4 + case D14: return TO_MUX( ADC_CHANNEL_IN11, 2 ); // Can also be ADC4 + case E7: return TO_MUX( ADC_CHANNEL_IN13, 2 ); + case E8: return TO_MUX( ADC_CHANNEL_IN6, 2 ); // Can also be ADC4 + case E9: return TO_MUX( ADC_CHANNEL_IN2, 2 ); + case E10: return TO_MUX( ADC_CHANNEL_IN14, 2 ); + case E11: return TO_MUX( ADC_CHANNEL_IN15, 2 ); + case E12: return TO_MUX( ADC_CHANNEL_IN16, 2 ); + case E13: return TO_MUX( ADC_CHANNEL_IN3, 2 ); + case E14: return TO_MUX( ADC_CHANNEL_IN1, 3 ); + case E15: return TO_MUX( ADC_CHANNEL_IN2, 3 ); + case F2: return TO_MUX( ADC_CHANNEL_IN10, 0 ); // Can also be ADC2 + case F4: return TO_MUX( ADC_CHANNEL_IN5, 0 ); +#elif defined(STM32F4XX) // TODO: add all pins + case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 ); + //case A1: return TO_MUX( ADC_CHANNEL_IN1, 0 ); +#elif defined(STM32F1XX) // TODO: add all pins + case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 ); +#endif + } + + // return an adc that would never be used so intToADCDriver will bail out + return TO_MUX(0, 0xFF); +} +// clang-format on + +static inline ADCDriver* intToADCDriver(uint8_t adcInt) { + switch (adcInt) { +#if STM32_ADC_USE_ADC1 + case 0: + return &ADCD1; +#endif +#if STM32_ADC_USE_ADC2 + case 1: + return &ADCD2; +#endif +#if STM32_ADC_USE_ADC3 + case 2: + return &ADCD3; +#endif +#if STM32_ADC_USE_ADC4 + case 3: + return &ADCD4; +#endif + } + + return NULL; +} + +static inline void manageAdcInitializationDriver(uint8_t adc, ADCDriver* adcDriver) { + if (!adcInitialized[adc]) { + adcStart(adcDriver, &adcCfg); + adcInitialized[adc] = true; + } +} + +int16_t analogReadPin(pin_t pin) { + palSetLineMode(pin, PAL_MODE_INPUT_ANALOG); + + return adc_read(pinToMux(pin)); +} + +int16_t analogReadPinAdc(pin_t pin, uint8_t adc) { + palSetLineMode(pin, PAL_MODE_INPUT_ANALOG); + + adc_mux target = pinToMux(pin); + target.adc = adc; + return adc_read(target); +} + +int16_t adc_read(adc_mux mux) { +#if defined(USE_ADCV1) + // TODO: fix previous assumption of only 1 input... + adcConversionGroup.chselr = 1 << mux.input; /*no macro to convert N to ADC_CHSELR_CHSEL1*/ +#elif defined(USE_ADCV2) + adcConversionGroup.sqr3 = ADC_SQR3_SQ1_N(mux.input); +#else + adcConversionGroup.sqr[0] = ADC_SQR1_SQ1_N(mux.input); +#endif + + ADCDriver* targetDriver = intToADCDriver(mux.adc); + if (!targetDriver) { + return 0; + } + + manageAdcInitializationDriver(mux.adc, targetDriver); + if (adcConvert(targetDriver, &adcConversionGroup, &sampleBuffer[0], ADC_BUFFER_DEPTH) != MSG_OK) { + return 0; + } + +#ifdef USE_ADCV2 + // fake 12-bit -> N-bit scale + return (*sampleBuffer) >> (12 - ADC_RESOLUTION); +#else + // already handled as part of adcConvert + return *sampleBuffer; +#endif +} diff --git a/drivers/chibios/analog.h b/drivers/chibios/analog.h new file mode 100644 index 000000000..e61c39426 --- /dev/null +++ b/drivers/chibios/analog.h @@ -0,0 +1,41 @@ +/* Copyright 2019 Drew Mills + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include +#include "quantum.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct { + uint16_t input; + uint8_t adc; +} adc_mux; +#define TO_MUX(i, a) \ + (adc_mux) { i, a } + +int16_t analogReadPin(pin_t pin); +int16_t analogReadPinAdc(pin_t pin, uint8_t adc); +adc_mux pinToMux(pin_t pin); + +int16_t adc_read(adc_mux mux); + +#ifdef __cplusplus +} +#endif diff --git a/drivers/chibios/i2c_master.c b/drivers/chibios/i2c_master.c new file mode 100644 index 000000000..ede915fa4 --- /dev/null +++ b/drivers/chibios/i2c_master.c @@ -0,0 +1,114 @@ +/* Copyright 2018 Jack Humbert + * Copyright 2018 Yiancar + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* This library is only valid for STM32 processors. + * This library follows the convention of the AVR i2c_master library. + * As a result addresses are expected to be already shifted (addr << 1). + * I2CD1 is the default driver which corresponds to pins B6 and B7. This + * can be changed. + * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that + * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file. Pins B6 and B7 are used + * but using any other I2C pins should be trivial. + */ +#include "quantum.h" +#include "i2c_master.h" +#include +#include + +static uint8_t i2c_address; + +static const I2CConfig i2cconfig = { +#ifdef USE_I2CV1 + I2C1_OPMODE, + I2C1_CLOCK_SPEED, + I2C1_DUTY_CYCLE, +#else + // This configures the I2C clock to 400khz assuming a 72Mhz clock + // For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html + STM32_TIMINGR_PRESC(I2C1_TIMINGR_PRESC) | STM32_TIMINGR_SCLDEL(I2C1_TIMINGR_SCLDEL) | STM32_TIMINGR_SDADEL(I2C1_TIMINGR_SDADEL) | STM32_TIMINGR_SCLH(I2C1_TIMINGR_SCLH) | STM32_TIMINGR_SCLL(I2C1_TIMINGR_SCLL), 0, 0 +#endif +}; + +static i2c_status_t chibios_to_qmk(const msg_t* status) { + switch (*status) { + case I2C_NO_ERROR: + return I2C_STATUS_SUCCESS; + case I2C_TIMEOUT: + return I2C_STATUS_TIMEOUT; + // I2C_BUS_ERROR, I2C_ARBITRATION_LOST, I2C_ACK_FAILURE, I2C_OVERRUN, I2C_PEC_ERROR, I2C_SMB_ALERT + default: + return I2C_STATUS_ERROR; + } +} + +__attribute__((weak)) void i2c_init(void) { + // Try releasing special pins for a short time + palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_INPUT); + palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_INPUT); + + chThdSleepMilliseconds(10); +#if defined(USE_GPIOV1) + palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_STM32_ALTERNATE_OPENDRAIN); + palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_STM32_ALTERNATE_OPENDRAIN); +#else + palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN); + palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN); +#endif +} + +i2c_status_t i2c_start(uint8_t address) { + i2c_address = address; + i2cStart(&I2C_DRIVER, &i2cconfig); + return I2C_STATUS_SUCCESS; +} + +i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout) { + i2c_address = address; + i2cStart(&I2C_DRIVER, &i2cconfig); + msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, TIME_MS2I(timeout)); + return chibios_to_qmk(&status); +} + +i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) { + i2c_address = address; + i2cStart(&I2C_DRIVER, &i2cconfig); + msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, TIME_MS2I(timeout)); + return chibios_to_qmk(&status); +} + +i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) { + i2c_address = devaddr; + i2cStart(&I2C_DRIVER, &i2cconfig); + + uint8_t complete_packet[length + 1]; + for (uint8_t i = 0; i < length; i++) { + complete_packet[i + 1] = data[i]; + } + complete_packet[0] = regaddr; + + msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, TIME_MS2I(timeout)); + return chibios_to_qmk(&status); +} + +i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) { + i2c_address = devaddr; + i2cStart(&I2C_DRIVER, &i2cconfig); + msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), ®addr, 1, data, length, TIME_MS2I(timeout)); + return chibios_to_qmk(&status); +} + +void i2c_stop(void) { i2cStop(&I2C_DRIVER); } diff --git a/drivers/chibios/i2c_master.h b/drivers/chibios/i2c_master.h new file mode 100644 index 000000000..3d3891289 --- /dev/null +++ b/drivers/chibios/i2c_master.h @@ -0,0 +1,106 @@ +/* Copyright 2018 Jack Humbert + * Copyright 2018 Yiancar + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* This library follows the convention of the AVR i2c_master library. + * As a result addresses are expected to be already shifted (addr << 1). + * I2CD1 is the default driver which corresponds to pins B6 and B7. This + * can be changed. + * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that + * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file. + */ +#pragma once + +#include "ch.h" +#include + +#ifdef I2C1_BANK +# define I2C1_SCL_BANK I2C1_BANK +# define I2C1_SDA_BANK I2C1_BANK +#endif + +#ifndef I2C1_SCL_BANK +# define I2C1_SCL_BANK GPIOB +#endif + +#ifndef I2C1_SDA_BANK +# define I2C1_SDA_BANK GPIOB +#endif + +#ifndef I2C1_SCL +# define I2C1_SCL 6 +#endif +#ifndef I2C1_SDA +# define I2C1_SDA 7 +#endif + +#ifdef USE_I2CV1 +# ifndef I2C1_OPMODE +# define I2C1_OPMODE OPMODE_I2C +# endif +# ifndef I2C1_CLOCK_SPEED +# define I2C1_CLOCK_SPEED 100000 /* 400000 */ +# endif +# ifndef I2C1_DUTY_CYCLE +# define I2C1_DUTY_CYCLE STD_DUTY_CYCLE /* FAST_DUTY_CYCLE_2 */ +# endif +#else +// The default timing values below configures the I2C clock to 400khz assuming a 72Mhz clock +// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html +# ifndef I2C1_TIMINGR_PRESC +# define I2C1_TIMINGR_PRESC 0U +# endif +# ifndef I2C1_TIMINGR_SCLDEL +# define I2C1_TIMINGR_SCLDEL 7U +# endif +# ifndef I2C1_TIMINGR_SDADEL +# define I2C1_TIMINGR_SDADEL 0U +# endif +# ifndef I2C1_TIMINGR_SCLH +# define I2C1_TIMINGR_SCLH 38U +# endif +# ifndef I2C1_TIMINGR_SCLL +# define I2C1_TIMINGR_SCLL 129U +# endif +#endif + +#ifndef I2C_DRIVER +# define I2C_DRIVER I2CD1 +#endif + +#ifndef USE_GPIOV1 +// The default PAL alternate modes are used to signal that the pins are used for I2C +# ifndef I2C1_SCL_PAL_MODE +# define I2C1_SCL_PAL_MODE 4 +# endif +# ifndef I2C1_SDA_PAL_MODE +# define I2C1_SDA_PAL_MODE 4 +# endif +#endif + +typedef int16_t i2c_status_t; + +#define I2C_STATUS_SUCCESS (0) +#define I2C_STATUS_ERROR (-1) +#define I2C_STATUS_TIMEOUT (-2) + +void i2c_init(void); +i2c_status_t i2c_start(uint8_t address); +i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout); +i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout); +i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout); +i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout); +void i2c_stop(void); diff --git a/drivers/chibios/ws2812.c b/drivers/chibios/ws2812.c new file mode 100644 index 000000000..bdca565d8 --- /dev/null +++ b/drivers/chibios/ws2812.c @@ -0,0 +1,95 @@ +#include "quantum.h" +#include "ws2812.h" +#include "ch.h" +#include "hal.h" + +/* Adapted from https://github.com/bigjosh/SimpleNeoPixelDemo/ */ + +#ifndef NOP_FUDGE +# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F3XX) || defined(STM32F4XX) || defined(STM32L0XX) +# define NOP_FUDGE 0.4 +# else +# error("NOP_FUDGE configuration required") +# define NOP_FUDGE 1 // this just pleases the compile so the above error is easier to spot +# endif +#endif + +#define NUMBER_NOPS 6 +#define CYCLES_PER_SEC (STM32_SYSCLK / NUMBER_NOPS * NOP_FUDGE) +#define NS_PER_SEC (1000000000L) // Note that this has to be SIGNED since we want to be able to check for negative values of derivatives +#define NS_PER_CYCLE (NS_PER_SEC / CYCLES_PER_SEC) +#define NS_TO_CYCLES(n) ((n) / NS_PER_CYCLE) + +#define wait_ns(x) \ + do { \ + for (int i = 0; i < NS_TO_CYCLES(x); i++) { \ + __asm__ volatile("nop\n\t" \ + "nop\n\t" \ + "nop\n\t" \ + "nop\n\t" \ + "nop\n\t" \ + "nop\n\t"); \ + } \ + } while (0) + +// These are the timing constraints taken mostly from the WS2812 datasheets +// These are chosen to be conservative and avoid problems rather than for maximum throughput + +#define T1H 900 // Width of a 1 bit in ns +#define T1L (1250 - T1H) // Width of a 1 bit in ns + +#define T0H 350 // Width of a 0 bit in ns +#define T0L (1250 - T0H) // Width of a 0 bit in ns + +// The reset gap can be 6000 ns, but depending on the LED strip it may have to be increased +// to values like 600000 ns. If it is too small, the pixels will show nothing most of the time. +#define RES 10000 // Width of the low gap between bits to cause a frame to latch + +void sendByte(uint8_t byte) { + // WS2812 protocol wants most significant bits first + for (unsigned char bit = 0; bit < 8; bit++) { + bool is_one = byte & (1 << (7 - bit)); + // using something like wait_ns(is_one ? T1L : T0L) here throws off timings + if (is_one) { + // 1 + writePinHigh(RGB_DI_PIN); + wait_ns(T1H); + writePinLow(RGB_DI_PIN); + wait_ns(T1L); + } else { + // 0 + writePinHigh(RGB_DI_PIN); + wait_ns(T0H); + writePinLow(RGB_DI_PIN); + wait_ns(T0L); + } + } +} + +void ws2812_init(void) { setPinOutput(RGB_DI_PIN); } + +// Setleds for standard RGB +void ws2812_setleds(LED_TYPE *ledarray, uint16_t leds) { + static bool s_init = false; + if (!s_init) { + ws2812_init(); + s_init = true; + } + + // this code is very time dependent, so we need to disable interrupts + chSysLock(); + + for (uint8_t i = 0; i < leds; i++) { + // WS2812 protocol dictates grb order + sendByte(ledarray[i].g); + sendByte(ledarray[i].r); + sendByte(ledarray[i].b); +#ifdef RGBW + sendByte(ledarray[i].w); +#endif + } + + wait_ns(RES); + + chSysUnlock(); +} diff --git a/drivers/chibios/ws2812.h b/drivers/chibios/ws2812.h new file mode 100644 index 000000000..41c22a00b --- /dev/null +++ b/drivers/chibios/ws2812.h @@ -0,0 +1,16 @@ +#pragma once + +#include "quantum/color.h" + +/* User Interface + * + * Input: + * ledarray: An array of GRB data describing the LED colors + * number_of_leds: The number of LEDs to write + * + * The functions will perform the following actions: + * - Set the data-out pin as output + * - Send out the LED data + * - Wait 50us to reset the LEDs + */ +void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds); diff --git a/drivers/chibios/ws2812_pwm.c b/drivers/chibios/ws2812_pwm.c new file mode 100644 index 000000000..1a1721029 --- /dev/null +++ b/drivers/chibios/ws2812_pwm.c @@ -0,0 +1,207 @@ +#include "ws2812.h" +#include "quantum.h" +#include "hal.h" + +/* Adapted from https://github.com/joewa/WS2812-LED-Driver_ChibiOS/ */ + +#ifdef RGBW +# error "RGBW not supported" +#endif + +#ifndef WS2812_PWM_DRIVER +# define WS2812_PWM_DRIVER PWMD2 // TIMx +#endif +#ifndef WS2812_PWM_CHANNEL +# define WS2812_PWM_CHANNEL 2 // Channel +#endif +#ifndef WS2812_PWM_PAL_MODE +# define WS2812_PWM_PAL_MODE 2 // DI Pin's alternate function value +#endif +#ifndef WS2812_DMA_STREAM +# define WS2812_DMA_STREAM STM32_DMA1_STREAM2 // DMA Stream for TIMx_UP +#endif +#ifndef WS2812_DMA_CHANNEL +# define WS2812_DMA_CHANNEL 2 // DMA Channel for TIMx_UP +#endif + +#ifndef WS2812_PWM_TARGET_PERIOD +//# define WS2812_PWM_TARGET_PERIOD 800000 // Original code is 800k...? +# define WS2812_PWM_TARGET_PERIOD 80000 // TODO: work out why 10x less on f303/f4x1 +#endif + +/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ + +#define WS2812_PWM_FREQUENCY (STM32_SYSCLK / 2) /**< Clock frequency of PWM, must be valid with respect to system clock! */ +#define WS2812_PWM_PERIOD (WS2812_PWM_FREQUENCY / WS2812_PWM_TARGET_PERIOD) /**< Clock period in ticks. 1 / 800kHz = 1.25 uS (as per datasheet) */ + +/** + * @brief Number of bit-periods to hold the data line low at the end of a frame + * + * The reset period for each frame must be at least 50 uS; so we add in 50 bit-times + * of zeroes at the end. (50 bits)*(1.25 uS/bit) = 62.5 uS, which gives us some + * slack in the timing requirements + */ +#define WS2812_RESET_BIT_N (50) +#define WS2812_COLOR_BIT_N (RGBLED_NUM * 24) /**< Number of data bits */ +#define WS2812_BIT_N (WS2812_COLOR_BIT_N + WS2812_RESET_BIT_N) /**< Total number of bits in a frame */ + +/** + * @brief High period for a zero, in ticks + * + * Per the datasheet: + * WS2812: + * - T0H: 200 nS to 500 nS, inclusive + * - T0L: 650 nS to 950 nS, inclusive + * WS2812B: + * - T0H: 200 nS to 500 nS, inclusive + * - T0L: 750 nS to 1050 nS, inclusive + * + * The duty cycle is calculated for a high period of 350 nS. + */ +#define WS2812_DUTYCYCLE_0 (WS2812_PWM_FREQUENCY / (1000000000 / 350)) + +/** + * @brief High period for a one, in ticks + * + * Per the datasheet: + * WS2812: + * - T1H: 550 nS to 850 nS, inclusive + * - T1L: 450 nS to 750 nS, inclusive + * WS2812B: + * - T1H: 750 nS to 1050 nS, inclusive + * - T1L: 200 nS to 500 nS, inclusive + * + * The duty cycle is calculated for a high period of 800 nS. + * This is in the middle of the specifications of the WS2812 and WS2812B. + */ +#define WS2812_DUTYCYCLE_1 (WS2812_PWM_FREQUENCY / (1000000000 / 800)) + +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +/** + * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given bit + * + * @param[in] led: The led index [0, @ref RGBLED_NUM) + * @param[in] byte: The byte number [0, 2] + * @param[in] bit: The bit number [0, 7] + * + * @return The bit index + */ +#define WS2812_BIT(led, byte, bit) (24 * (led) + 8 * (byte) + (7 - (bit))) + +/** + * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given red bit + * + * @note The red byte is the middle byte in the color packet + * + * @param[in] led: The led index [0, @ref RGBLED_NUM) + * @param[in] bit: The bit number [0, 7] + * + * @return The bit index + */ +#define WS2812_RED_BIT(led, bit) WS2812_BIT((led), 1, (bit)) + +/** + * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given green bit + * + * @note The red byte is the first byte in the color packet + * + * @param[in] led: The led index [0, @ref RGBLED_NUM) + * @param[in] bit: The bit number [0, 7] + * + * @return The bit index + */ +#define WS2812_GREEN_BIT(led, bit) WS2812_BIT((led), 0, (bit)) + +/** + * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given blue bit + * + * @note The red byte is the last byte in the color packet + * + * @param[in] led: The led index [0, @ref RGBLED_NUM) + * @param[in] bit: The bit index [0, 7] + * + * @return The bit index + */ +#define WS2812_BLUE_BIT(led, bit) WS2812_BIT((led), 2, (bit)) + +/* --- PRIVATE VARIABLES ---------------------------------------------------- */ + +static uint32_t ws2812_frame_buffer[WS2812_BIT_N + 1]; /**< Buffer for a frame */ + +/* --- PUBLIC FUNCTIONS ----------------------------------------------------- */ +/* + * Gedanke: Double-buffer type transactions: double buffer transfers using two memory pointers for +the memory (while the DMA is reading/writing from/to a buffer, the application can +write/read to/from the other buffer). + */ + +void ws2812_init(void) { + // Initialize led frame buffer + uint32_t i; + for (i = 0; i < WS2812_COLOR_BIT_N; i++) ws2812_frame_buffer[i] = WS2812_DUTYCYCLE_0; // All color bits are zero duty cycle + for (i = 0; i < WS2812_RESET_BIT_N; i++) ws2812_frame_buffer[i + WS2812_COLOR_BIT_N] = 0; // All reset bits are zero + +#if defined(USE_GPIOV1) + palSetLineMode(RGB_DI_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL); +#else + palSetLineMode(RGB_DI_PIN, PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING); +#endif + + // PWM Configuration + //#pragma GCC diagnostic ignored "-Woverride-init" // Turn off override-init warning for this struct. We use the overriding ability to set a "default" channel config + static const PWMConfig ws2812_pwm_config = { + .frequency = WS2812_PWM_FREQUENCY, + .period = WS2812_PWM_PERIOD, // Mit dieser Periode wird UDE-Event erzeugt und ein neuer Wert (Länge WS2812_BIT_N) vom DMA ins CCR geschrieben + .callback = NULL, + .channels = + { + [0 ... 3] = {.mode = PWM_OUTPUT_DISABLED, .callback = NULL}, // Channels default to disabled + [WS2812_PWM_CHANNEL - 1] = {.mode = PWM_OUTPUT_ACTIVE_HIGH, .callback = NULL}, // Turn on the channel we care about + }, + .cr2 = 0, + .dier = TIM_DIER_UDE, // DMA on update event for next period + }; + //#pragma GCC diagnostic pop // Restore command-line warning options + + // Configure DMA + // dmaInit(); // Joe added this + dmaStreamAlloc(WS2812_DMA_STREAM - STM32_DMA1_STREAM1, 10, NULL, NULL); + dmaStreamSetPeripheral(WS2812_DMA_STREAM, &(WS2812_PWM_DRIVER.tim->CCR[WS2812_PWM_CHANNEL - 1])); // Ziel ist der An-Zeit im Cap-Comp-Register + dmaStreamSetMemory0(WS2812_DMA_STREAM, ws2812_frame_buffer); + dmaStreamSetTransactionSize(WS2812_DMA_STREAM, WS2812_BIT_N); + dmaStreamSetMode(WS2812_DMA_STREAM, STM32_DMA_CR_CHSEL(WS2812_DMA_CHANNEL) | STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_WORD | STM32_DMA_CR_MSIZE_WORD | STM32_DMA_CR_MINC | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(3)); + // M2P: Memory 2 Periph; PL: Priority Level + + // Start DMA + dmaStreamEnable(WS2812_DMA_STREAM); + + // Configure PWM + // NOTE: It's required that preload be enabled on the timer channel CCR register. This is currently enabled in the + // ChibiOS driver code, so we don't have to do anything special to the timer. If we did, we'd have to start the timer, + // disable counting, enable the channel, and then make whatever configuration changes we need. + pwmStart(&WS2812_PWM_DRIVER, &ws2812_pwm_config); + pwmEnableChannel(&WS2812_PWM_DRIVER, WS2812_PWM_CHANNEL - 1, 0); // Initial period is 0; output will be low until first duty cycle is DMA'd in +} + +void ws2812_write_led(uint16_t led_number, uint8_t r, uint8_t g, uint8_t b) { + // Write color to frame buffer + for (uint8_t bit = 0; bit < 8; bit++) { + ws2812_frame_buffer[WS2812_RED_BIT(led_number, bit)] = ((r >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0; + ws2812_frame_buffer[WS2812_GREEN_BIT(led_number, bit)] = ((g >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0; + ws2812_frame_buffer[WS2812_BLUE_BIT(led_number, bit)] = ((b >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0; + } +} + +// Setleds for standard RGB +void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) { + static bool s_init = false; + if (!s_init) { + ws2812_init(); + s_init = true; + } + + for (uint16_t i = 0; i < leds; i++) { + ws2812_write_led(i, ledarray[i].r, ledarray[i].g, ledarray[i].b); + } +} diff --git a/drivers/chibios/ws2812_spi.c b/drivers/chibios/ws2812_spi.c new file mode 100644 index 000000000..36e08e39e --- /dev/null +++ b/drivers/chibios/ws2812_spi.c @@ -0,0 +1,90 @@ +#include "quantum.h" +#include "ws2812.h" + +/* Adapted from https://github.com/gamazeps/ws2812b-chibios-SPIDMA/ */ + +#ifdef RGBW +# error "RGBW not supported" +#endif + +// Define the spi your LEDs are plugged to here +#ifndef WS2812_SPI +# define WS2812_SPI SPID1 +#endif + +#ifndef WS2812_SPI_MOSI_PAL_MODE +# define WS2812_SPI_MOSI_PAL_MODE 5 +#endif + +#define BYTES_FOR_LED_BYTE 4 +#define NB_COLORS 3 +#define BYTES_FOR_LED (BYTES_FOR_LED_BYTE * NB_COLORS) +#define DATA_SIZE (BYTES_FOR_LED * RGBLED_NUM) +#define RESET_SIZE 200 +#define PREAMBLE_SIZE 4 + +static uint8_t txbuf[PREAMBLE_SIZE + DATA_SIZE + RESET_SIZE] = {0}; + +/* + * As the trick here is to use the SPI to send a huge pattern of 0 and 1 to + * the ws2812b protocol, we use this helper function to translate bytes into + * 0s and 1s for the LED (with the appropriate timing). + */ +static uint8_t get_protocol_eq(uint8_t data, int pos) { + uint8_t eq = 0; + if (data & (1 << (2 * (3 - pos)))) + eq = 0b1110; + else + eq = 0b1000; + if (data & (2 << (2 * (3 - pos)))) + eq += 0b11100000; + else + eq += 0b10000000; + return eq; +} + +static void set_led_color_rgb(LED_TYPE color, int pos) { + uint8_t* tx_start = &txbuf[PREAMBLE_SIZE]; + + for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + j] = get_protocol_eq(color.g, j); + for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE + j] = get_protocol_eq(color.r, j); + for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE * 2 + j] = get_protocol_eq(color.b, j); +} + +void ws2812_init(void) { +#if defined(USE_GPIOV1) + palSetLineMode(RGB_DI_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL); +#else + palSetLineMode(RGB_DI_PIN, PAL_MODE_ALTERNATE(WS2812_SPI_MOSI_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL); +#endif + + // TODO: more dynamic baudrate + static const SPIConfig spicfg = { + 0, NULL, PAL_PORT(RGB_DI_PIN), PAL_PAD(RGB_DI_PIN), + SPI_CR1_BR_1 | SPI_CR1_BR_0 // baudrate : fpclk / 8 => 1tick is 0.32us (2.25 MHz) + }; + + spiAcquireBus(&WS2812_SPI); /* Acquire ownership of the bus. */ + spiStart(&WS2812_SPI, &spicfg); /* Setup transfer parameters. */ + spiSelect(&WS2812_SPI); /* Slave Select assertion. */ +} + +void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) { + static bool s_init = false; + if (!s_init) { + ws2812_init(); + s_init = true; + } + + for (uint8_t i = 0; i < leds; i++) { + set_led_color_rgb(ledarray[i], i); + } + + // Send async - each led takes ~0.03ms, 50 leds ~1.5ms, animations flushing faster than send will cause issues. + // Instead spiSend can be used to send synchronously (or the thread logic can be added back). +#ifdef WS2812_SPI_SYNC + spiSend(&WS2812_SPI, sizeof(txbuf) / sizeof(txbuf[0]), txbuf); +#else + spiStartSend(&WS2812_SPI, sizeof(txbuf) / sizeof(txbuf[0]), txbuf); +#endif +} -- cgit v1.2.3