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| author | Joel Bodenmann <joel@unormal.org> | 2012-11-29 01:21:36 +0100 |
|---|---|---|
| committer | Joel Bodenmann <joel@unormal.org> | 2012-11-29 01:21:36 +0100 |
| commit | 5bfa0f26220588359342d4bf14add6dc53b4788b (patch) | |
| tree | f5ade7a4ef2a5e4379990b2a56e00cea1b2827b2 /drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h | |
| parent | 62dee0d3515a63a0fa25f4506dc765ecab29c1f5 (diff) | |
| download | uGFX-5bfa0f26220588359342d4bf14add6dc53b4788b.tar.gz uGFX-5bfa0f26220588359342d4bf14add6dc53b4788b.tar.bz2 uGFX-5bfa0f26220588359342d4bf14add6dc53b4788b.zip | |
ginput/touch/MCU Olimex STM32 LCD board file
Diffstat (limited to 'drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h')
| -rw-r--r-- | drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h b/drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h new file mode 100644 index 00000000..cde1ba77 --- /dev/null +++ b/drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_stm32_lcd.h @@ -0,0 +1,163 @@ +/*
+ 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/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.
+ *
+ * @addtogroup GINPUT_MOUSE
+ * @{
+ */
+
+#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);
+ chThdSleepMilliseconds(1);
+ adcConvert(&ADCD1, &adc_x_config, samples, ADC_BUF_DEPTH);
+ val1 = ((samples[0] + samples[1])/2);
+
+ palClearPad(GPIOC, 2);
+ palSetPad(GPIOC, 3);
+ chThdSleepMilliseconds(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);
+ chThdSleepMilliseconds(1);
+ adcConvert(&ADCD1, &adc_y_config, samples, ADC_BUF_DEPTH);
+ val1 = ((samples[0] + samples[1])/2);
+
+ palClearPad(GPIOC, 0);
+ palSetPad(GPIOC, 1);
+ chThdSleepMilliseconds(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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