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