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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file boards/base/Mikromedia-STM32-M4-ILI9341/ginput_lld_mouse_board.h
* @brief GINPUT Touch low level driver source for the MCU.
*/
#ifndef _GINPUT_LLD_MOUSE_BOARD_H
#define _GINPUT_LLD_MOUSE_BOARD_H
#define ADC_NUM_CHANNELS 2
#define ADC_BUF_DEPTH 1
static const ADCConversionGroup adcgrpcfg = {
FALSE,
ADC_NUM_CHANNELS,
NULL,
NULL,
/* HW dependent part.*/
0,
ADC_CR2_SWSTART,
0,
0,
ADC_SQR1_NUM_CH(ADC_NUM_CHANNELS),
0,
ADC_SQR3_SQ2_N(ADC_CHANNEL_IN8) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN9)
};
/**
* @brief Initialise the board for the touch.
*
* @notapi
*/
static inline void init_board(void) {
adcStart(&ADCD1, NULL);
}
/**
* @brief Aquire the bus ready for readings
*
* @notapi
*/
static inline void aquire_bus(void) {
}
/**
* @brief Release the bus after readings
*
* @notapi
*/
static inline void release_bus(void) {
}
static inline void setup_x(void) {
palSetPad(GPIOB, GPIOB_DRIVEA);
palClearPad(GPIOB, GPIOB_DRIVEB);
chThdSleepMilliseconds(2);
}
static inline void setup_y(void) {
palClearPad(GPIOB, GPIOB_DRIVEA);
palSetPad(GPIOB, GPIOB_DRIVEB);
chThdSleepMilliseconds(2);
}
static inline void setup_z(void) {
palClearPad(GPIOB, GPIOB_DRIVEA);
palClearPad(GPIOB, GPIOB_DRIVEB);
chThdSleepMilliseconds(2);
}
static inline uint16_t read_x(void) {
adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
adcConvert(&ADCD1, &adcgrpcfg, samples, ADC_BUF_DEPTH);
return samples[1];
}
static inline uint16_t read_y(void) {
adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
adcConvert(&ADCD1, &adcgrpcfg, samples, ADC_BUF_DEPTH);
return samples[0];
}
static inline uint16_t read_z(void) {
adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
adcConvert(&ADCD1, &adcgrpcfg, samples, ADC_BUF_DEPTH);
// z will go from ~200 to ~4000 when pressed
// auto range this back to 0 to 100
if (samples[0] > 4000)
return 100;
if (samples[0] < 400)
return 0;
return (samples[0] - 400) / ((4000-400)/100);
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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