diff options
Diffstat (limited to 'drivers/touchscreen/MCU/touchscreen_lld.c')
| -rw-r--r-- | drivers/touchscreen/MCU/touchscreen_lld.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/drivers/touchscreen/MCU/touchscreen_lld.c b/drivers/touchscreen/MCU/touchscreen_lld.c deleted file mode 100644 index d34228a6..00000000 --- a/drivers/touchscreen/MCU/touchscreen_lld.c +++ /dev/null @@ -1,172 +0,0 @@ -/*
- ChibiOS/GFX - Copyright (C) 2012
- Joel Bodenmann aka Tectu <joel@unormal.org>
-
- This file is part of ChibiOS/GFX.
-
- ChibiOS/GFX is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/GFX 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file drivers/touchscreen/MCU/touchscreen_lld.c
- * @brief Touchscreen Driver subsystem low level driver source.
- *
- * @addtogroup TOUCHSCREEN
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-#include "touchscreen.h"
-
-#if GFX_USE_TOUCHSCREEN /*|| defined(__DOXYGEN__)*/
-
-#define ADC_NUM_CHANNELS 2
-#define ADC_BUF_DEPTH 1
-
-/*===========================================================================*/
-/* Driver local variables. */
-/*===========================================================================*/
-
-static const TouchscreenDriver *ts;
-
-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 Low level Touchscreen driver initialization.
- *
- * @param[in] ts The touchscreen driver struct
- *
- * @notapi
- */
-void ts_lld_init(const TouchscreenDriver *ts_init) {
- ts = ts_init;
-
- adcStart(ts->adc_driver, NULL);
-}
-
-/**
- * @brief 7-point median filtering code for touchscreen samples
- *
- * @note This is an internally used routine only.
- *
- * @notapi
- */
-static void ts_lld_filter(void) {
-
- return 0;
-}
-
-/**
- * @brief Reads out the X direction.
- *
- * @note The samples are median filtered for greater noise reduction
- *
- * @notapi
- */
-uint16_t ts_lld_read_x(void) {
- uint16_t val1, val2;
- adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
-
- palSetPadMode(ts->yd_port, ts->yd_pin, PAL_MODE_INPUT_ANALOG);
- palSetPadMode(ts->yu_port, ts->yu_pin, PAL_MODE_INPUT_ANALOG);
- palSetPadMode(ts->xl_port, ts->xl_pin, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(ts->xr_port, ts->xr_pin, PAL_MODE_OUTPUT_PUSHPULL);
-
- palSetPad(ts->xl_port, ts->xl_pin);
- palClearPad(ts->xr_port, ts->xr_pin);
- chThdSleepMilliseconds(1);
- adcConvert(ts->adc_driver, &adc_x_config, samples, ADC_BUF_DEPTH);
- val1 = ((samples[0] + samples[1])/2);
-
- palClearPad(ts->xl_port, ts->xl_pin);
- palSetPad(ts->xr_port, ts->xr_pin);
- chThdSleepMilliseconds(1);
- adcConvert(ts->adc_driver, &adc_x_config, samples, ADC_BUF_DEPTH);
- val2 = ((samples[0] + samples[1])/2);
-
- return ((val1+((1<<12)-val2))/4);
-}
-
-/**
- * @brief Reads out the Y direction.
- *
- * @notapi
- */
-uint16_t ts_lld_read_y(void) {
- uint16_t val1, val2;
- adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
-
- palSetPadMode(ts->xl_port, ts->xl_pin, PAL_MODE_INPUT_ANALOG);
- palSetPadMode(ts->xr_port, ts->xr_pin, PAL_MODE_INPUT_ANALOG);
- palSetPadMode(ts->yd_port, ts->yd_pin, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(ts->yu_port, ts->yu_pin, PAL_MODE_OUTPUT_PUSHPULL);
-
- palSetPad(ts->yu_port, ts->yu_pin);
- palClearPad(ts->yd_port, ts->yd_pin);
- chThdSleepMilliseconds(1);
- adcConvert(ts->adc_driver, &adc_y_config, samples, ADC_BUF_DEPTH);
- val1 = ((samples[0] + samples[1])/2);
-
- palClearPad(ts->yu_port, ts->yu_pin);
- palSetPad(ts->yd_port, ts->yd_pin);
- chThdSleepMilliseconds(1);
- adcConvert(ts->adc_driver, &adc_y_config, samples, ADC_BUF_DEPTH);
- val2 = ((samples[0] + samples[1])/2);
-
- return ((val1+((1<<12)-val2))/4);
-}
-
-/*
- * @brief Checks if touchscreen is pressed or not.
- *
- * @return 1 if pressed, 0 otherwise
- *
- * @notapi
- */
-uint8_t ts_lld_pressed(void) {
- palSetPadMode(ts->yd_port, ts->yd_pin, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(ts->yu_port, ts->yu_pin, PAL_MODE_INPUT);
- palSetPadMode(ts->xl_port, ts->xl_pin, PAL_MODE_INPUT);
- palSetPadMode(ts->xr_port, ts->xr_pin, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPad(ts->xr_port, ts->xr_pin);
-
- return palReadPad(ts->yd_port, ts->yd_pin);
-}
-
-#endif /* GFX_USE_TOUCHSCREEN */
-/** @} */
-
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