diff options
Diffstat (limited to 'libopencm3/lib/stm32/l1')
22 files changed, 1813 insertions, 0 deletions
diff --git a/libopencm3/lib/stm32/l1/Makefile b/libopencm3/lib/stm32/l1/Makefile new file mode 100644 index 0000000..00f4ba1 --- /dev/null +++ b/libopencm3/lib/stm32/l1/Makefile @@ -0,0 +1,52 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library 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 Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see <http://www.gnu.org/licenses/>. +## + +LIBNAME = libopencm3_stm32l1 +SRCLIBDIR ?= ../.. + +PREFIX ?= arm-none-eabi + +CC = $(PREFIX)-gcc +AR = $(PREFIX)-ar +CFLAGS = -Os -g \ + -Wall -Wextra -Wimplicit-function-declaration \ + -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \ + -Wundef -Wshadow \ + -I../../../include -fno-common \ + -mcpu=cortex-m3 $(FP_FLAGS) -mthumb -Wstrict-prototypes \ + -ffunction-sections -fdata-sections -MD -DSTM32L1 +# ARFLAGS = rcsv +ARFLAGS = rcs +OBJS = crc.o desig.o flash.o rcc.o usart.o dma.o lcd.o +OBJS += crc_common_all.o dac_common_all.o +OBJS += dma_common_l1f013.o +OBJS += gpio_common_all.o gpio_common_f0234.o +OBJS += i2c_common_all.o iwdg_common_all.o +OBJS += pwr_common_all.o pwr.o rtc_common_l1f024.o +OBJS += spi_common_all.o spi_common_l1f124.o timer_common_all.o +OBJS += usart_common_all.o usart_common_f124.o +OBJS += exti_common_all.o +OBJS += rcc_common_all.o +OBJS += usb.o usb_control.o usb_standard.o usb_f103.o +OBJS += adc.o adc_common_v1.o + +VPATH += ../../usb:../:../../cm3:../common + +include ../../Makefile.include + diff --git a/libopencm3/lib/stm32/l1/adc.c b/libopencm3/lib/stm32/l1/adc.c new file mode 100644 index 0000000..b3ca8a6 --- /dev/null +++ b/libopencm3/lib/stm32/l1/adc.c @@ -0,0 +1,201 @@ +/** @defgroup adc_file ADC + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx Analog to Digital Converters</b> + +@author @htmlonly © @endhtmlonly 2014 Karl Palsson <karlp@tweak.net.au> + + +LGPL License Terms @ref lgpl_license + */ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2014 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/adc.h> + +/**@{*/ + +/*---------------------------------------------------------------------------*/ +/** @brief ADC Power On + +If the ADC is in power-down mode then it is powered up. The application needs +to wait a time of about 3 microseconds for stabilization before using the ADC. +If the ADC is already on this function call will have no effect. + * NOTE Common with F4 and F2 + +@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base +*/ + +void adc_power_on(uint32_t adc) +{ + ADC_CR2(adc) |= ADC_CR2_ADON; +} + + +/*----------------------------------------------------------------------------*/ + +/** @brief ADC Set the Sample Time for a Single Channel + +The sampling time can be selected in ADC clock cycles from 4 to 384. + +@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base. +@param[in] channel uint8. ADC Channel integer 0..18 or from @ref adc_channel. +@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg. + */ +void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time) +{ + uint32_t reg32; + + if (channel < 10) { + reg32 = ADC_SMPR3(adc); + reg32 &= ~(0x7 << (channel * 3)); + reg32 |= (time << (channel * 3)); + ADC_SMPR3(adc) = reg32; + } else if (channel < 20) { + reg32 = ADC_SMPR2(adc); + reg32 &= ~(0x7 << ((channel - 10) * 3)); + reg32 |= (time << ((channel - 10) * 3)); + ADC_SMPR2(adc) = reg32; + } else { + reg32 = ADC_SMPR1(adc); + reg32 &= ~(0x7 << ((channel - 20) * 3)); + reg32 |= (time << ((channel - 20) * 3)); + ADC_SMPR1(adc) = reg32; + } +} + +/*----------------------------------------------------------------------------*/ +/** @brief ADC Set the Sample Time for All Channels + +The sampling time can be selected in ADC clock cycles, same for +all channels. + +@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base. +@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg. +*/ + +void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time) +{ + uint8_t i; + uint32_t reg32 = 0; + + for (i = 0; i <= 9; i++) { + reg32 |= (time << (i * 3)); + } + ADC_SMPR0(adc) = reg32; + ADC_SMPR1(adc) = reg32; + ADC_SMPR2(adc) = reg32; + ADC_SMPR3(adc) = reg32; +} + +/*----------------------------------------------------------------------------*/ +/** @brief ADC Enable The Temperature Sensor + +This enables both the sensor and the reference voltage measurements on channels +16 and 17. + +*/ +void adc_enable_temperature_sensor() +{ + ADC_CCR |= ADC_CCR_TSVREFE; +} + +/*----------------------------------------------------------------------------*/ +/** @brief ADC Disable The Temperature Sensor + +Disabling this will reduce power consumption from the sensor and the reference +voltage measurements. + +*/ +void adc_disable_temperature_sensor() +{ + ADC_CCR &= ~ADC_CCR_TSVREFE; +} + +/*----------------------------------------------------------------------------*/ +/** @brief ADC Disable an External Trigger for Regular Channels + +@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base +*/ + +void adc_disable_external_trigger_regular(uint32_t adc) +{ + ADC_CR2(adc) &= ~ADC_CR2_EXTEN_MASK; +} + +/*----------------------------------------------------------------------------*/ +/** @brief ADC Disable an External Trigger for Injected Channels + +@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base. +*/ + +void adc_disable_external_trigger_injected(uint32_t adc) +{ + ADC_CR2(adc) &= ~ADC_CR2_JEXTEN_MASK; +} + +/*---------------------------------------------------------------------------*/ +/** @brief ADC Enable an External Trigger for Regular Channels + +This enables an external trigger for set of defined regular channels, and sets +the polarity of the trigger event: rising or falling edge or both. Note that if +the trigger polarity is zero, triggering is disabled. + +@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base +@param[in] trigger Unsigned int32. Trigger identifier @ref adc_trigger_regular +@param[in] polarity Unsigned int32. Trigger polarity @ref +adc_trigger_polarity_regular +*/ + +void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger, + uint32_t polarity) +{ + uint32_t reg32 = ADC_CR2(adc); + + reg32 &= ~(ADC_CR2_EXTSEL_MASK | ADC_CR2_EXTEN_MASK); + reg32 |= (trigger | polarity); + ADC_CR2(adc) = reg32; +} + +/*---------------------------------------------------------------------------*/ +/** @brief ADC Enable an External Trigger for Injected Channels + +This enables an external trigger for set of defined injected channels, and sets +the polarity of the trigger event: rising or falling edge or both. + +@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base +@param[in] trigger Unsigned int8. Trigger identifier @ref adc_trigger_injected +@param[in] polarity Unsigned int32. Trigger polarity @ref +adc_trigger_polarity_injected +*/ + +void adc_enable_external_trigger_injected(uint32_t adc, uint32_t trigger, + uint32_t polarity) +{ + uint32_t reg32 = ADC_CR2(adc); + + reg32 &= ~(ADC_CR2_JEXTSEL_MASK | ADC_CR2_JEXTEN_MASK); + reg32 |= (trigger | polarity); + ADC_CR2(adc) = reg32; +} + +/**@}*/ + + diff --git a/libopencm3/lib/stm32/l1/crc.c b/libopencm3/lib/stm32/l1/crc.c new file mode 100644 index 0000000..8a71c89 --- /dev/null +++ b/libopencm3/lib/stm32/l1/crc.c @@ -0,0 +1,33 @@ +/** @defgroup crc_file CRC + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx CRC</b> + +@version 1.0.0 + +@date 15 October 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/crc.h> + + diff --git a/libopencm3/lib/stm32/l1/dac.c b/libopencm3/lib/stm32/l1/dac.c new file mode 100644 index 0000000..ed118b4 --- /dev/null +++ b/libopencm3/lib/stm32/l1/dac.c @@ -0,0 +1,31 @@ +/** @defgroup dac_file DAC + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx DAC</b> + +@version 1.0.0 + +@date 18 August 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/dac.h> diff --git a/libopencm3/lib/stm32/l1/dma.c b/libopencm3/lib/stm32/l1/dma.c new file mode 100644 index 0000000..6f4622d --- /dev/null +++ b/libopencm3/lib/stm32/l1/dma.c @@ -0,0 +1,31 @@ +/** @defgroup dma_file DMA + * + * @ingroup STM32L1xx + * + * @brief <b>libopencm3 STM32L1xx DMA</b> + * + * @version 1.0.0 + * + * @date 10 July 2013 + * + * LGPL License Terms @ref lgpl_license + */ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/dma.h> diff --git a/libopencm3/lib/stm32/l1/flash.c b/libopencm3/lib/stm32/l1/flash.c new file mode 100644 index 0000000..fdd2cca --- /dev/null +++ b/libopencm3/lib/stm32/l1/flash.c @@ -0,0 +1,208 @@ +/** @defgroup flash_file FLASH + * + * @ingroup STM32L1xx + * + * @brief <b>libopencm3 STM32L1xx FLASH</b> + * + * @version 1.0.0 + * + * @author @htmlonly © @endhtmlonly 2010 + * Thomas Otto <tommi@viadmin.org> + * @author @htmlonly © @endhtmlonly 2010 + * Mark Butler <mbutler@physics.otago.ac.nz> + * @author @htmlonly © @endhtmlonly 2012 + * Karl Palsson <karlp@tweak.net.au> + * + * @date 14 January 2014 + * + * For the STM32L1xx, accessing FLASH memory is described briefly in + * section 2.3.3 of the STM32L1xx Reference Manual. + * For detailed programming information see: + * PM0062 programming manual: STM32L1xxxx Flash and EEPROM programming + * March 2012, Doc ID 16024 Rev 5 + * + * LGPL License Terms @ref lgpl_license + */ + +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org> + * Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz> + * Copyright (C) 2012-13 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/**@{*/ + +#include <libopencm3/stm32/flash.h> + +/*---------------------------------------------------------------------------*/ +/** @brief Enable 64 Bit Programming Mode + +*/ + +void flash_64bit_enable(void) +{ + FLASH_ACR |= FLASH_ACR_ACC64; +} + +/*---------------------------------------------------------------------------*/ +/** @brief Enable 32 Bit Programming Mode + +This mode is a low power mode. It must be used at low frequencies and does not +allow prefetch or wait states to be used. +*/ + +void flash_64bit_disable(void) +{ + FLASH_ACR &= ~FLASH_ACR_ACC64; +} + +/*---------------------------------------------------------------------------*/ +/** @brief Enable the FLASH Prefetch Buffer + +This buffer is used for instruction fetches and is enabled by default after +reset. + +Note carefully the restrictions under which the prefetch buffer may be +enabled or disabled. Prefetch is only available when 64-bit +access is enabled. +*/ + +void flash_prefetch_enable(void) +{ + FLASH_ACR |= FLASH_ACR_PRFTEN; +} + +/*---------------------------------------------------------------------------*/ +/** @brief Disable the FLASH Prefetch Buffer + +Note carefully the restrictions under which the prefetch buffer may be +set to disabled. See the reference and programming manuals for details. +*/ + +void flash_prefetch_disable(void) +{ + FLASH_ACR &= ~FLASH_ACR_PRFTEN; +} + +/*---------------------------------------------------------------------------*/ +/** @brief Set the Number of Wait States + +Used to match the system clock to the FLASH memory access time. See the +programming manual for more information on clock speed and voltage ranges. The +latency must be changed to the appropriate value <b>before</b> any increase in +clock speed, or <b>after</b> any decrease in clock speed. A latency setting of +zero only applies if 64-bit mode is not used. + +@param[in] uint32_t ws: values from @ref flash_latency. +*/ + +void flash_set_ws(uint32_t ws) +{ + uint32_t reg32; + + reg32 = FLASH_ACR; + reg32 &= ~(1 << 0); + reg32 |= ws; + FLASH_ACR = reg32; +} + +void flash_unlock_pecr(void) { + FLASH_PEKEYR = FLASH_PEKEYR_PEKEY1; + FLASH_PEKEYR = FLASH_PEKEYR_PEKEY2; +} + +void flash_lock_pecr(void) { + FLASH_PECR |= FLASH_PECR_PELOCK; +} + +void flash_unlock_progmem(void) { + flash_unlock_pecr(); + FLASH_PRGKEYR = FLASH_PRGKEYR_PRGKEY1; + FLASH_PRGKEYR = FLASH_PRGKEYR_PRGKEY2; +} + +void flash_lock_progmem(void) { + FLASH_PECR |= FLASH_PECR_PRGLOCK; +} + +void flash_unlock_option_bytes(void) { + flash_unlock_pecr(); + FLASH_OPTKEYR = FLASH_OPTKEYR_OPTKEY1; + FLASH_OPTKEYR = FLASH_OPTKEYR_OPTKEY2; +} + +void flash_lock_option_bytes(void) { + FLASH_PECR |= FLASH_PECR_OPTLOCK; +} + +/** @brief Unlock all segments of flash + * + */ +void flash_unlock(void) { + flash_unlock_pecr(); + flash_unlock_progmem(); + flash_unlock_option_bytes(); +} + +/** @brief Lock all segments of flash + * + */ +void flash_lock(void) { + flash_lock_option_bytes(); + flash_lock_progmem(); + flash_lock_pecr(); +} + +/** @brief Write a word to eeprom + * + * @param address assumed to be in the eeprom space, no checking + * @param data word to write + */ +void eeprom_program_word(uint32_t address, uint32_t data) { + flash_unlock_pecr(); + /* erase only if needed */ + FLASH_PECR &= ~FLASH_PECR_FTDW; + MMIO32(address) = data; + flash_lock_pecr(); +} + +/** @brief Write a block of words to eeprom + * + * Writes a block of words to EEPROM at the requested address, erasing if necessary, + * and locking afterwards. Only wordwise writing is safe for writing any value + * + * @param[in] address must point to EEPROM space, no checking! + * @param[in] data pointer to data to write + * @param[in] length size of of data in WORDS! + * */ +void eeprom_program_words(uint32_t address, uint32_t *data, int length_in_words) +{ + int i; + flash_unlock_pecr(); + while (FLASH_SR & FLASH_SR_BSY); + /* erase only if needed */ + FLASH_PECR &= ~FLASH_PECR_FTDW; + for (i = 0; i < length_in_words; i++) { + MMIO32(address + (i * sizeof(uint32_t))) = *(data+i); + while (FLASH_SR & FLASH_SR_BSY); + } + flash_lock_pecr(); +} + + +/**@}*/ diff --git a/libopencm3/lib/stm32/l1/gpio.c b/libopencm3/lib/stm32/l1/gpio.c new file mode 100644 index 0000000..46ea658 --- /dev/null +++ b/libopencm3/lib/stm32/l1/gpio.c @@ -0,0 +1,31 @@ +/** @defgroup gpio_file GPIO + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx General Purpose I/O</b> + +@version 1.0.0 + +@date 18 August 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/gpio.h> diff --git a/libopencm3/lib/stm32/l1/i2c.c b/libopencm3/lib/stm32/l1/i2c.c new file mode 100644 index 0000000..2390c96 --- /dev/null +++ b/libopencm3/lib/stm32/l1/i2c.c @@ -0,0 +1,31 @@ +/** @defgroup i2c_file I2C + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx I2C</b> + +@version 1.0.0 + +@date 15 October 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/i2c.h> diff --git a/libopencm3/lib/stm32/l1/iwdg.c b/libopencm3/lib/stm32/l1/iwdg.c new file mode 100644 index 0000000..1f37fe8 --- /dev/null +++ b/libopencm3/lib/stm32/l1/iwdg.c @@ -0,0 +1,31 @@ +/** @defgroup iwdg_file IWDG + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx Independent Watchdog Timer</b> + +@version 1.0.0 + +@date 18 August 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/iwdg.h> diff --git a/libopencm3/lib/stm32/l1/lcd.c b/libopencm3/lib/stm32/l1/lcd.c new file mode 100644 index 0000000..68173ab --- /dev/null +++ b/libopencm3/lib/stm32/l1/lcd.c @@ -0,0 +1,154 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2014 Nikolay Merinov <nikolay.merinov@member.fsf.org> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/l1/lcd.h> +#include <libopencm3/stm32/rcc.h> + +void lcd_enable(void) +{ + LCD_CR |= LCD_CR_LCDEN; +} + +void lcd_update(void) +{ + LCD_SR |= LCD_SR_UDR; +} + +void lcd_wait_for_lcd_enabled(void) +{ + while ((LCD_SR & LCD_SR_ENS) == 0); +} + +void lcd_wait_for_step_up_ready(void) +{ + while ((LCD_SR & LCD_SR_RDY) == 0); +} + +void lcd_wait_for_update_ready(void) +{ + while ((LCD_SR & LCD_SR_UDR) != 0); +} + +int lcd_is_enabled(void) +{ + return ((LCD_SR & LCD_SR_ENS) != 0); +} + +int lcd_is_step_up_ready(void) +{ + return ((LCD_SR & LCD_SR_RDY) != 0); +} + +int lcd_is_for_update_ready(void) +{ + return ((LCD_SR & LCD_SR_UDR) == 0); +} + +void lcd_set_contrast(uint8_t contrast) +{ + LCD_FCR &= ~(LCD_FCR_CC_MASK << LCD_FCR_CC_SHIFT); + LCD_FCR |= contrast << LCD_FCR_CC_SHIFT; +} + +void lcd_set_bias(uint8_t bias) +{ + LCD_CR &= ~(LCD_CR_BIAS_MASK << LCD_CR_BIAS_SHIFT); + LCD_CR |= bias << LCD_CR_BIAS_SHIFT; +} + +void lcd_set_duty(uint8_t duty) +{ + LCD_CR &= ~(LCD_CR_DUTY_MASK << LCD_CR_DUTY_SHIFT); + LCD_CR |= duty << LCD_CR_DUTY_SHIFT; +} + +void lcd_set_prescaler(uint8_t ps) +{ + LCD_FCR &= ~(LCD_FCR_PS_MASK << LCD_FCR_PS_SHIFT); + LCD_FCR |= ps << LCD_FCR_PS_SHIFT; +} + +void lcd_set_divider(uint8_t div) +{ + LCD_FCR &= ~(LCD_FCR_DIV_MASK << LCD_FCR_DIV_SHIFT); + LCD_FCR |= div << LCD_FCR_DIV_SHIFT; +} + +void lcd_enable_segment_multiplexing(void) +{ + LCD_CR |= LCD_CR_MUX_SEG; +} + +void lcd_disable_segment_multiplexing(void) +{ + LCD_CR &= ~LCD_CR_MUX_SEG; +} + +void lcd_set_refresh_frequency(uint32_t frequency) +{ + uint32_t duty, lcd_clock; + switch ((LCD_CR >> LCD_CR_DUTY_SHIFT) & LCD_CR_DUTY_MASK) { + case LCD_CR_DUTY_STATIC: + duty = 1; + break; + case LCD_CR_DUTY_1_2: + duty = 2; + break; + case LCD_CR_DUTY_1_3: + duty = 3; + break; + case LCD_CR_DUTY_1_4: + duty = 4; + break; + case LCD_CR_DUTY_1_8: + duty = 8; + break; + default: + /* Incorrect duty */ + return; + } + + switch ((RCC_CSR >> RCC_CSR_RTCSEL_SHIFT) & RCC_CSR_RTCSEL_MASK) { + case RCC_CSR_RTCSEL_LSE: + lcd_clock = 32786; + break; + case RCC_CSR_RTCSEL_LSI: + lcd_clock = 37000; + break; + case RCC_CSR_RTCSEL_HSI: + lcd_clock = 16000000; + break; + default: + /* RCC Clock not selected */ + return; + } + + /* PS * DIV = lcd_clock/(duty * freq) */ + uint32_t ps_mul_div = lcd_clock / (duty * frequency); + + int div, ps = 0; + while (ps_mul_div > 32) { + ps_mul_div >>= 1; + ps++; + } + div = ps_mul_div - 16; + + lcd_set_prescaler(ps); + lcd_set_divider(div); +} diff --git a/libopencm3/lib/stm32/l1/libopencm3_stm32l1.ld b/libopencm3/lib/stm32/l1/libopencm3_stm32l1.ld new file mode 100644 index 0000000..3fc2ccb --- /dev/null +++ b/libopencm3/lib/stm32/l1/libopencm3_stm32l1.ld @@ -0,0 +1,106 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Generic linker script for STM32 targets using libopencm3. */ + +/* Memory regions must be defined in the ld script which includes this one. */ + +/* Enforce emmition of the vector table. */ +EXTERN (vector_table) + +/* Define the entry point of the output file. */ +ENTRY(reset_handler) + +/* Define sections. */ +SECTIONS +{ + .text : { + *(.vectors) /* Vector table */ + *(.text*) /* Program code */ + . = ALIGN(4); + *(.rodata*) /* Read-only data */ + . = ALIGN(4); + } >rom + + /* C++ Static constructors/destructors, also used for __attribute__ + * ((constructor)) and the likes */ + .preinit_array : { + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + } >rom + .init_array : { + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + } >rom + .fini_array : { + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + } >rom + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support + */ + .ARM.extab : { + *(.ARM.extab*) + } >rom + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } >rom + + . = ALIGN(4); + _etext = .; + + .data : { + _data = .; + *(.data*) /* Read-write initialized data */ + . = ALIGN(4); + _edata = .; + } >ram AT >rom + _data_loadaddr = LOADADDR(.data); + + .bss : { + *(.bss*) /* Read-write zero initialized data */ + *(COMMON) + . = ALIGN(4); + _ebss = .; + } >ram + + /* + * The .eh_frame section appears to be used for C++ exception handling. + * You may need to fix this if you're using C++. + */ + /DISCARD/ : { *(.eh_frame) } + + . = ALIGN(4); + end = .; +} + +PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram)); + diff --git a/libopencm3/lib/stm32/l1/pwr.c b/libopencm3/lib/stm32/l1/pwr.c new file mode 100644 index 0000000..64210d5 --- /dev/null +++ b/libopencm3/lib/stm32/l1/pwr.c @@ -0,0 +1,58 @@ +/** @defgroup pwr_file PWR + * + * @ingroup STM32L1xx + * + * @brief <b>libopencm3 STM32L1xx Power Control</b> + * + * @version 1.0.0 + * + * @author @htmlonly © @endhtmlonly 2012 Karl Palsson <karlp@tweak.net.au> + * + * @date 4 March 2013 + * + * This library supports the power control system for the + * STM32L1 series of ARM Cortex Microcontrollers by ST Microelectronics. + * + * LGPL License Terms @ref lgpl_license + */ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/pwr.h> +#include <libopencm3/stm32/rcc.h> + +void pwr_set_vos_scale(vos_scale_t scale) +{ + /* You are not allowed to write zeros here, don't try and optimize! */ + uint32_t reg = PWR_CR; + reg &= ~(PWR_CR_VOS_MASK); + switch (scale) { + case RANGE1: + reg |= PWR_CR_VOS_RANGE1; + break; + case RANGE2: + reg |= PWR_CR_VOS_RANGE2; + break; + case RANGE3: + reg |= PWR_CR_VOS_RANGE3; + break; + } + PWR_CR = reg; +} + diff --git a/libopencm3/lib/stm32/l1/rcc.c b/libopencm3/lib/stm32/l1/rcc.c new file mode 100644 index 0000000..4efd789 --- /dev/null +++ b/libopencm3/lib/stm32/l1/rcc.c @@ -0,0 +1,534 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Federico Ruiz-Ugalde <memeruiz at gmail dot com> + * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> + * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org> + * Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + * Based on the F4 code... + */ + +#include <libopencm3/stm32/rcc.h> +#include <libopencm3/stm32/flash.h> +#include <libopencm3/stm32/pwr.h> + +/* Set the default ppre1 and ppre2 peripheral clock frequencies after reset. */ +uint32_t rcc_ppre1_frequency = 2097000; +uint32_t rcc_ppre2_frequency = 2097000; + +const clock_scale_t clock_config[CLOCK_CONFIG_END] = { + { /* 24MHz PLL from HSI */ + .pll_source = RCC_CFGR_PLLSRC_HSI_CLK, + .pll_mul = RCC_CFGR_PLLMUL_MUL3, + .pll_div = RCC_CFGR_PLLDIV_DIV2, + .hpre = RCC_CFGR_HPRE_SYSCLK_NODIV, + .ppre1 = RCC_CFGR_PPRE1_HCLK_NODIV, + .ppre2 = RCC_CFGR_PPRE2_HCLK_NODIV, + .voltage_scale = RANGE1, + .flash_config = FLASH_ACR_LATENCY_1WS, + .apb1_frequency = 24000000, + .apb2_frequency = 24000000, + }, + { /* 32MHz PLL from HSI */ + .pll_source = RCC_CFGR_PLLSRC_HSI_CLK, + .pll_mul = RCC_CFGR_PLLMUL_MUL6, + .pll_div = RCC_CFGR_PLLDIV_DIV3, + .hpre = RCC_CFGR_HPRE_SYSCLK_NODIV, + .ppre1 = RCC_CFGR_PPRE1_HCLK_NODIV, + .ppre2 = RCC_CFGR_PPRE2_HCLK_NODIV, + .voltage_scale = RANGE1, + .flash_config = FLASH_ACR_LATENCY_1WS, + .apb1_frequency = 32000000, + .apb2_frequency = 32000000, + }, + { /* 16MHz HSI raw */ + .hpre = RCC_CFGR_HPRE_SYSCLK_NODIV, + .ppre1 = RCC_CFGR_PPRE1_HCLK_NODIV, + .ppre2 = RCC_CFGR_PPRE2_HCLK_NODIV, + .voltage_scale = RANGE1, + .flash_config = FLASH_ACR_LATENCY_0WS, + .apb1_frequency = 16000000, + .apb2_frequency = 16000000, + }, + { /* 4MHz HSI raw */ + .hpre = RCC_CFGR_HPRE_SYSCLK_DIV4, + .ppre1 = RCC_CFGR_PPRE1_HCLK_NODIV, + .ppre2 = RCC_CFGR_PPRE2_HCLK_NODIV, + .voltage_scale = RANGE1, + .flash_config = FLASH_ACR_LATENCY_0WS, + .apb1_frequency = 4000000, + .apb2_frequency = 4000000, + }, + { /* 4MHz MSI raw */ + .hpre = RCC_CFGR_HPRE_SYSCLK_NODIV, + .ppre1 = RCC_CFGR_PPRE1_HCLK_NODIV, + .ppre2 = RCC_CFGR_PPRE2_HCLK_NODIV, + .voltage_scale = RANGE1, + .flash_config = FLASH_ACR_LATENCY_0WS, + .apb1_frequency = 4194000, + .apb2_frequency = 4194000, + .msi_range = RCC_ICSCR_MSIRANGE_4MHZ, + }, + { /* 2MHz MSI raw */ + .hpre = RCC_CFGR_HPRE_SYSCLK_NODIV, + .ppre1 = RCC_CFGR_PPRE1_HCLK_NODIV, + .ppre2 = RCC_CFGR_PPRE2_HCLK_NODIV, + .voltage_scale = RANGE1, + .flash_config = FLASH_ACR_LATENCY_0WS, + .apb1_frequency = 2097000, + .apb2_frequency = 2097000, + .msi_range = RCC_ICSCR_MSIRANGE_2MHZ, + }, +}; + +void rcc_osc_ready_int_clear(osc_t osc) +{ + switch (osc) { + case PLL: + RCC_CIR |= RCC_CIR_PLLRDYC; + break; + case HSE: + RCC_CIR |= RCC_CIR_HSERDYC; + break; + case HSI: + RCC_CIR |= RCC_CIR_HSIRDYC; + break; + case LSE: + RCC_CIR |= RCC_CIR_LSERDYC; + break; + case LSI: + RCC_CIR |= RCC_CIR_LSIRDYC; + break; + case MSI: + RCC_CIR |= RCC_CIR_MSIRDYC; + break; + } +} + +void rcc_osc_ready_int_enable(osc_t osc) +{ + switch (osc) { + case PLL: + RCC_CIR |= RCC_CIR_PLLRDYIE; + break; + case HSE: + RCC_CIR |= RCC_CIR_HSERDYIE; + break; + case HSI: + RCC_CIR |= RCC_CIR_HSIRDYIE; + break; + case LSE: + RCC_CIR |= RCC_CIR_LSERDYIE; + break; + case LSI: + RCC_CIR |= RCC_CIR_LSIRDYIE; + break; + case MSI: + RCC_CIR |= RCC_CIR_MSIRDYIE; + break; + } +} + +void rcc_osc_ready_int_disable(osc_t osc) +{ + switch (osc) { + case PLL: + RCC_CIR &= ~RCC_CIR_PLLRDYIE; + break; + case HSE: + RCC_CIR &= ~RCC_CIR_HSERDYIE; + break; + case HSI: + RCC_CIR &= ~RCC_CIR_HSIRDYIE; + break; + case LSE: + RCC_CIR &= ~RCC_CIR_LSERDYIE; + break; + case LSI: + RCC_CIR &= ~RCC_CIR_LSIRDYIE; + break; + case MSI: + RCC_CIR &= ~RCC_CIR_MSIRDYIE; + break; + } +} + +int rcc_osc_ready_int_flag(osc_t osc) +{ + switch (osc) { + case PLL: + return ((RCC_CIR & RCC_CIR_PLLRDYF) != 0); + break; + case HSE: + return ((RCC_CIR & RCC_CIR_HSERDYF) != 0); + break; + case HSI: + return ((RCC_CIR & RCC_CIR_HSIRDYF) != 0); + break; + case LSE: + return ((RCC_CIR & RCC_CIR_LSERDYF) != 0); + break; + case LSI: + return ((RCC_CIR & RCC_CIR_LSIRDYF) != 0); + break; + case MSI: + return ((RCC_CIR & RCC_CIR_MSIRDYF) != 0); + break; + } + + /* Shouldn't be reached. */ + return -1; +} + +void rcc_css_int_clear(void) +{ + RCC_CIR |= RCC_CIR_CSSC; +} + +int rcc_css_int_flag(void) +{ + return ((RCC_CIR & RCC_CIR_CSSF) != 0); +} + +void rcc_wait_for_osc_ready(osc_t osc) +{ + switch (osc) { + case PLL: + while ((RCC_CR & RCC_CR_PLLRDY) == 0); + break; + case HSE: + while ((RCC_CR & RCC_CR_HSERDY) == 0); + break; + case HSI: + while ((RCC_CR & RCC_CR_HSIRDY) == 0); + break; + case MSI: + while ((RCC_CR & RCC_CR_MSIRDY) == 0); + break; + case LSE: + while ((RCC_CSR & RCC_CSR_LSERDY) == 0); + break; + case LSI: + while ((RCC_CSR & RCC_CSR_LSIRDY) == 0); + break; + } +} + +void rcc_wait_for_sysclk_status(osc_t osc) +{ + switch (osc) { + case PLL: + while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != + RCC_CFGR_SWS_SYSCLKSEL_PLLCLK); + break; + case HSE: + while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != + RCC_CFGR_SWS_SYSCLKSEL_HSECLK); + break; + case HSI: + while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != + RCC_CFGR_SWS_SYSCLKSEL_HSICLK); + break; + case MSI: + while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != + RCC_CFGR_SWS_SYSCLKSEL_MSICLK); + break; + default: + /* Shouldn't be reached. */ + break; + } +} + +void rcc_osc_on(osc_t osc) +{ + switch (osc) { + case PLL: + RCC_CR |= RCC_CR_PLLON; + break; + case MSI: + RCC_CR |= RCC_CR_MSION; + break; + case HSE: + RCC_CR |= RCC_CR_HSEON; + break; + case HSI: + RCC_CR |= RCC_CR_HSION; + break; + case LSE: + RCC_CSR |= RCC_CSR_LSEON; + break; + case LSI: + RCC_CSR |= RCC_CSR_LSION; + break; + } +} + +void rcc_osc_off(osc_t osc) +{ + switch (osc) { + case PLL: + RCC_CR &= ~RCC_CR_PLLON; + break; + case MSI: + RCC_CR &= ~RCC_CR_MSION; + break; + case HSE: + RCC_CR &= ~RCC_CR_HSEON; + break; + case HSI: + RCC_CR &= ~RCC_CR_HSION; + break; + case LSE: + RCC_CSR &= ~RCC_CSR_LSEON; + break; + case LSI: + RCC_CSR &= ~RCC_CSR_LSION; + break; + } +} + +void rcc_css_enable(void) +{ + RCC_CR |= RCC_CR_CSSON; +} + +void rcc_css_disable(void) +{ + RCC_CR &= ~RCC_CR_CSSON; +} + +void rcc_osc_bypass_enable(osc_t osc) +{ + switch (osc) { + case HSE: + RCC_CR |= RCC_CR_HSEBYP; + break; + case LSE: + RCC_CSR |= RCC_CSR_LSEBYP; + break; + case PLL: + case HSI: + case LSI: + case MSI: + /* Do nothing, only HSE/LSE allowed here. */ + break; + } +} + +void rcc_osc_bypass_disable(osc_t osc) +{ + switch (osc) { + case HSE: + RCC_CR &= ~RCC_CR_HSEBYP; + break; + case LSE: + RCC_CSR &= ~RCC_CSR_LSEBYP; + break; + case PLL: + case HSI: + case LSI: + case MSI: + /* Do nothing, only HSE/LSE allowed here. */ + break; + } +} + +void rcc_set_sysclk_source(uint32_t clk) +{ + uint32_t reg32; + + reg32 = RCC_CFGR; + reg32 &= ~((1 << 1) | (1 << 0)); + RCC_CFGR = (reg32 | clk); +} + +void rcc_set_pll_configuration(uint32_t source, uint32_t multiplier, + uint32_t divisor) +{ + uint32_t reg32; + + reg32 = RCC_CFGR; + reg32 &= ~(RCC_CFGR_PLLDIV_MASK << RCC_CFGR_PLLDIV_SHIFT); + reg32 &= ~(RCC_CFGR_PLLMUL_MASK << RCC_CFGR_PLLMUL_SHIFT); + reg32 &= ~(1 << 16); + reg32 |= (source << 16); + reg32 |= (multiplier << RCC_CFGR_PLLMUL_SHIFT); + reg32 |= (divisor << RCC_CFGR_PLLDIV_SHIFT); + RCC_CFGR = reg32; +} + +void rcc_set_pll_source(uint32_t pllsrc) +{ + uint32_t reg32; + + reg32 = RCC_CFGR; + reg32 &= ~(1 << 16); + RCC_CFGR = (reg32 | (pllsrc << 16)); +} + +void rcc_set_ppre2(uint32_t ppre2) +{ + uint32_t reg32; + + reg32 = RCC_CFGR; + reg32 &= ~((1 << 13) | (1 << 12) | (1 << 11)); + RCC_CFGR = (reg32 | (ppre2 << 11)); +} + +void rcc_set_ppre1(uint32_t ppre1) +{ + uint32_t reg32; + + reg32 = RCC_CFGR; + reg32 &= ~((1 << 10) | (1 << 9) | (1 << 8)); + RCC_CFGR = (reg32 | (ppre1 << 8)); +} + +void rcc_set_hpre(uint32_t hpre) +{ + uint32_t reg32; + + reg32 = RCC_CFGR; + reg32 &= ~((1 << 4) | (1 << 5) | (1 << 6) | (1 << 7)); + RCC_CFGR = (reg32 | (hpre << 4)); +} + +void rcc_set_rtcpre(uint32_t rtcpre) +{ + uint32_t reg32; + + reg32 = RCC_CR; + reg32 &= ~((1 << 30) | (1 << 29)); + RCC_CR = (reg32 | (rtcpre << 29)); +} + +uint32_t rcc_system_clock_source(void) +{ + /* Return the clock source which is used as system clock. */ + return (RCC_CFGR & 0x000c) >> 2; +} + +void rcc_rtc_select_clock(uint32_t clock) +{ + RCC_CSR &= ~(RCC_CSR_RTCSEL_MASK << RCC_CSR_RTCSEL_SHIFT); + RCC_CSR |= (clock << RCC_CSR_RTCSEL_SHIFT); +} + +void rcc_clock_setup_msi(const clock_scale_t *clock) +{ + /* Enable internal multi-speed oscillator. */ + + uint32_t reg = RCC_ICSCR; + reg &= ~(RCC_ICSCR_MSIRANGE_MASK << RCC_ICSCR_MSIRANGE_SHIFT); + reg |= (clock->msi_range << RCC_ICSCR_MSIRANGE_SHIFT); + RCC_ICSCR = reg; + + rcc_osc_on(MSI); + rcc_wait_for_osc_ready(MSI); + + /* Select MSI as SYSCLK source. */ + rcc_set_sysclk_source(RCC_CFGR_SW_SYSCLKSEL_MSICLK); + + /* + * Set prescalers for AHB, ADC, ABP1, ABP2. + * Do this before touching the PLL (TODO: why?). + */ + rcc_set_hpre(clock->hpre); + rcc_set_ppre1(clock->ppre1); + rcc_set_ppre2(clock->ppre2); + + rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_PWREN); + pwr_set_vos_scale(clock->voltage_scale); + + /* I guess this should be in the settings? */ + flash_64bit_enable(); + flash_prefetch_enable(); + /* Configure flash settings. */ + flash_set_ws(clock->flash_config); + + /* Set the peripheral clock frequencies used. */ + rcc_ppre1_frequency = clock->apb1_frequency; + rcc_ppre2_frequency = clock->apb2_frequency; +} + +void rcc_clock_setup_hsi(const clock_scale_t *clock) +{ + /* Enable internal high-speed oscillator. */ + rcc_osc_on(HSI); + rcc_wait_for_osc_ready(HSI); + + /* Select HSI as SYSCLK source. */ + rcc_set_sysclk_source(RCC_CFGR_SW_SYSCLKSEL_HSICLK); + + /* + * Set prescalers for AHB, ADC, ABP1, ABP2. + * Do this before touching the PLL (TODO: why?). + */ + rcc_set_hpre(clock->hpre); + rcc_set_ppre1(clock->ppre1); + rcc_set_ppre2(clock->ppre2); + + rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_PWREN); + pwr_set_vos_scale(clock->voltage_scale); + + /* I guess this should be in the settings? */ + flash_64bit_enable(); + flash_prefetch_enable(); + /* Configure flash settings. */ + flash_set_ws(clock->flash_config); + + /* Set the peripheral clock frequencies used. */ + rcc_ppre1_frequency = clock->apb1_frequency; + rcc_ppre2_frequency = clock->apb2_frequency; +} + +void rcc_clock_setup_pll(const clock_scale_t *clock) +{ + /* Enable internal high-speed oscillator. */ + rcc_osc_on(HSI); + rcc_wait_for_osc_ready(HSI); + + /* + * Set prescalers for AHB, ADC, ABP1, ABP2. + * Do this before touching the PLL (TODO: why?). + */ + rcc_set_hpre(clock->hpre); + rcc_set_ppre1(clock->ppre1); + rcc_set_ppre2(clock->ppre2); + + rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_PWREN); + pwr_set_vos_scale(clock->voltage_scale); + + /* I guess this should be in the settings? */ + flash_64bit_enable(); + flash_prefetch_enable(); + /* Configure flash settings. */ + flash_set_ws(clock->flash_config); + + rcc_set_pll_configuration(clock->pll_source, clock->pll_mul, + clock->pll_div); + + /* Enable PLL oscillator and wait for it to stabilize. */ + rcc_osc_on(PLL); + rcc_wait_for_osc_ready(PLL); + + /* Select PLL as SYSCLK source. */ + rcc_set_sysclk_source(RCC_CFGR_SW_SYSCLKSEL_PLLCLK); + + /* Set the peripheral clock frequencies used. */ + rcc_ppre1_frequency = clock->apb1_frequency; + rcc_ppre2_frequency = clock->apb2_frequency; +} diff --git a/libopencm3/lib/stm32/l1/rtc.c b/libopencm3/lib/stm32/l1/rtc.c new file mode 100644 index 0000000..5628aa7 --- /dev/null +++ b/libopencm3/lib/stm32/l1/rtc.c @@ -0,0 +1,31 @@ +/** @defgroup rtc_file RTC + * + * @ingroup STM32L1xx + * + * @brief <b>libopencm3 STM32L1xx RTC</b> + * + * @version 1.0.0 + * + * @date 4 March 2013 + * + * LGPL License Terms @ref lgpl_license + */ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/rtc.h> diff --git a/libopencm3/lib/stm32/l1/spi.c b/libopencm3/lib/stm32/l1/spi.c new file mode 100644 index 0000000..05969fb --- /dev/null +++ b/libopencm3/lib/stm32/l1/spi.c @@ -0,0 +1,31 @@ +/** @defgroup spi_file SPI + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx SPI</b> + +@version 1.0.0 + +@date 15 October 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/spi.h> diff --git a/libopencm3/lib/stm32/l1/stm32l15xx6.ld b/libopencm3/lib/stm32/l1/stm32l15xx6.ld new file mode 100644 index 0000000..a72a5d8 --- /dev/null +++ b/libopencm3/lib/stm32/l1/stm32l15xx6.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2013 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Linker script for STM32L15xx6, 32K flash, 10K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 32K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 10K + eep (r) : ORIGIN = 0x08080000, LENGTH = 4K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld + diff --git a/libopencm3/lib/stm32/l1/stm32l15xx8.ld b/libopencm3/lib/stm32/l1/stm32l15xx8.ld new file mode 100644 index 0000000..656779b --- /dev/null +++ b/libopencm3/lib/stm32/l1/stm32l15xx8.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Linker script for STM32L15xx8, 64K flash, 10K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 64K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 10K + eep (r) : ORIGIN = 0x08080000, LENGTH = 4K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld + diff --git a/libopencm3/lib/stm32/l1/stm32l15xxb.ld b/libopencm3/lib/stm32/l1/stm32l15xxb.ld new file mode 100644 index 0000000..be81f37 --- /dev/null +++ b/libopencm3/lib/stm32/l1/stm32l15xxb.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Linker script for STM32L15xxB, 128K flash, 16K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 16K + eep (r) : ORIGIN = 0x08080000, LENGTH = 4K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld + diff --git a/libopencm3/lib/stm32/l1/stm32l15xxc.ld b/libopencm3/lib/stm32/l1/stm32l15xxc.ld new file mode 100644 index 0000000..651aed3 --- /dev/null +++ b/libopencm3/lib/stm32/l1/stm32l15xxc.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2013 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Linker script for STM32L15xxC, 256k flash, 32K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 256K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K + eep (r) : ORIGIN = 0x08080000, LENGTH = 8K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld + diff --git a/libopencm3/lib/stm32/l1/stm32l15xxd.ld b/libopencm3/lib/stm32/l1/stm32l15xxd.ld new file mode 100644 index 0000000..4b93c9b --- /dev/null +++ b/libopencm3/lib/stm32/l1/stm32l15xxd.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2013 Karl Palsson <karlp@tweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Linker script for STM32L15xxD, 384K flash, 38K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 384K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 48K + eep (r) : ORIGIN = 0x08080000, LENGTH = 12K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld + diff --git a/libopencm3/lib/stm32/l1/timer.c b/libopencm3/lib/stm32/l1/timer.c new file mode 100644 index 0000000..ab69c62 --- /dev/null +++ b/libopencm3/lib/stm32/l1/timer.c @@ -0,0 +1,59 @@ +/** @defgroup timer_file Timers + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx Timers</b> + +@version 1.0.0 + +@date 18 August 2012 + +*/ + +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2010 Edward Cheeseman <evbuilder@users.sourceforge.org> + * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/**@{*/ + +#include <libopencm3/stm32/timer.h> + +/*---------------------------------------------------------------------------*/ +/** @brief Set Timer Option + +Set timer options register on TIM2 or TIM3, used for trigger remapping. + +@param[in] timer_peripheral Unsigned int32. Timer register address base +@returns Unsigned int32. Option flags TIM2: @ref tim2_opt_trigger_remap, TIM3: +@ref tim3_opt_trigger_remap. +*/ + +void timer_set_option(uint32_t timer_peripheral, uint32_t option) +{ + if (timer_peripheral == TIM2) { + TIM_OR(timer_peripheral) &= ~TIM2_OR_ITR1_RMP_MASK; + TIM_OR(timer_peripheral) |= option; + } else if (timer_peripheral == TIM3) { + TIM_OR(timer_peripheral) &= ~TIM3_OR_ITR2_RMP_MASK; + TIM_OR(timer_peripheral) |= option; + } +} + +/**@}*/ + diff --git a/libopencm3/lib/stm32/l1/usart.c b/libopencm3/lib/stm32/l1/usart.c new file mode 100644 index 0000000..5e357bf --- /dev/null +++ b/libopencm3/lib/stm32/l1/usart.c @@ -0,0 +1,31 @@ +/** @defgroup usart_file USART + +@ingroup STM32L1xx + +@brief <b>libopencm3 STM32L1xx USART</b> + +@version 1.0.0 + +@date 30 August 2012 + +LGPL License Terms @ref lgpl_license +*/ + +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/usart.h> |