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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 drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h
* @brief GINPUT Touch low level driver source for the MCU on the example board.
*
* @defgroup Mouse Mouse
* @ingroup GINPUT
*
* @{
*/
#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 adc_y_config = {
FALSE,
ADC_NUM_CHANNELS,
NULL,
NULL,
0, 0,
0, 0,
ADC_SQR1_NUM_CH(ADC_NUM_CHANNELS),
0,
ADC_SQR3_SQ2_N(ADC_CHANNEL_IN12) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN13)
};
static const ADCConversionGroup adc_x_config = {
FALSE,
ADC_NUM_CHANNELS,
NULL,
NULL,
0, 0,
0, 0,
ADC_SQR1_NUM_CH(ADC_NUM_CHANNELS),
0,
ADC_SQR3_SQ2_N(ADC_CHANNEL_IN10) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN11)
};
/**
* @brief Initialise the board for the touch.
*
* @notapi
*/
static inline void init_board(void) {
adcStart(&ADCD1, NULL);
}
/**
* @brief Check whether the surface is currently touched
* @return TRUE if the surface is currently touched
*
* @notapi
*/
static inline bool_t getpin_pressed(void) {
palSetPadMode(GPIOC, 0, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOC, 1, PAL_MODE_INPUT);
palSetPadMode(GPIOC, 2, PAL_MODE_INPUT);
palSetPadMode(GPIOC, 3, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOC, 3);
return palReadPad(GPIOC, 0);
}
/**
* @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) {
}
/**
* @brief Read an x value from touch controller
* @return The value read from the controller
*
* @notapi
*/
static inline uint16_t read_x_value(void) {
uint16_t val1, val2;
adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
palSetPadMode(GPIOC, 0, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 1, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 2, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOC, 3, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOC, 2);
palClearPad(GPIOC, 3);
gfxSleepMilliseconds(1);
adcConvert(&ADCD1, &adc_x_config, samples, ADC_BUF_DEPTH);
val1 = ((samples[0] + samples[1])/2);
palClearPad(GPIOC, 2);
palSetPad(GPIOC, 3);
gfxSleepMilliseconds(1);
adcConvert(&ADCD1, &adc_x_config, samples, ADC_BUF_DEPTH);
val2 = ((samples[0] + samples[1])/2);
return ((val1+((1<<12)-val2))/4);
}
/**
* @brief Read an y value from touch controller
* @return The value read from the controller
*
* @notapi
*/
static inline uint16_t read_y_value(void) {
uint16_t val1, val2;
adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
palSetPadMode(GPIOC, 2, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 3, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 0, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOC, 1, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOC, 1);
palClearPad(GPIOC, 0);
gfxSleepMilliseconds(1);
adcConvert(&ADCD1, &adc_y_config, samples, ADC_BUF_DEPTH);
val1 = ((samples[0] + samples[1])/2);
palClearPad(GPIOC, 1);
palSetPad(GPIOC, 0);
gfxSleepMilliseconds(1);
adcConvert(&ADCD1, &adc_y_config, samples, ADC_BUF_DEPTH);
val2 = ((samples[0] + samples[1])/2);
return ((val1+((1<<12)-val2))/4);
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
/** @} */
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