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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
*/
#ifndef _LLD_GMOUSE_MCU_BOARD_H
#define _LLD_GMOUSE_MCU_BOARD_H
// Resolution and Accuracy Settings
#define GMOUSE_MCU_PEN_CALIBRATE_ERROR 8
#define GMOUSE_MCU_PEN_CLICK_ERROR 6
#define GMOUSE_MCU_PEN_MOVE_ERROR 4
#define GMOUSE_MCU_FINGER_CALIBRATE_ERROR 14
#define GMOUSE_MCU_FINGER_CLICK_ERROR 18
#define GMOUSE_MCU_FINGER_MOVE_ERROR 14
#define GMOUSE_MCU_Z_MIN 0
#define GMOUSE_MCU_Z_MAX 1
#define GMOUSE_MCU_Z_TOUCHON 1
#define GMOUSE_MCU_Z_TOUCHOFF 0
// How much extra data to allocate at the end of the GMouse structure for the board's use
#define GMOUSE_MCU_BOARD_DATA_SIZE 0
#define ADC_NUM_CHANNELS 2
#define ADC_BUF_DEPTH 1
static const ADCConversionGroup adc_y_config = {
FALSE,
ADC_NUM_CHANNELS,
0,
0,
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,
0,
0,
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)
};
static GFXINLINE void setup_z(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);
}
static gBool init_board(GMouse *m, unsigned driverinstance) {
(void) m;
// Only one touch interface on this board
if (driverinstance)
return gFalse;
adcStart(&ADCD1, 0);
// Set up for reading Z
setup_z();
chThdSleepMilliseconds(1); // Settling time
return gTrue;
}
static gBool read_xyz(GMouse *m, GMouseReading *prd) {
adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
uint16_t val1, val2;
(void) m;
// No buttons and assume touch off
prd->buttons = 0;
prd->z = 0;
// Get the z reading (assumes we are ready to read z)
// Take a shortcut and don't read x, y if we know we are definitely not touched.
if (palReadPad(GPIOC, 0)) {
prd->z = 1;
// Get the x reading - Weird but it works. Optimize later.
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);
prd->x = ((val1+((1<<12)-val2))/4);
// Get the y reading - Weird but it works. Optimize later.
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);
prd->y = ((val1+((1<<12)-val2))/4);
// Set up for reading z again. We know it will be 20ms before we get called again so don't worry about settling time
setup_z();
}
return gTrue;
}
#endif /* _LLD_GMOUSE_MCU_BOARD_H */
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