diff options
| author | Tectu <joel@unormal.org> | 2013-04-09 22:03:21 -0700 |
|---|---|---|
| committer | Tectu <joel@unormal.org> | 2013-04-09 22:03:21 -0700 |
| commit | 788bd442559bf2d7cbbaa0a6d5d1e5aac6cfd5e6 (patch) | |
| tree | dcacc9d8bf093108414b19cbef275f8ff4cf400a /drivers | |
| parent | 19467495781f43c25a556dc579f05677a9fd1aba (diff) | |
| parent | 8c54efc155ba27ee477ad1b5febb1d7b857e384b (diff) | |
| download | uGFX-788bd442559bf2d7cbbaa0a6d5d1e5aac6cfd5e6.tar.gz uGFX-788bd442559bf2d7cbbaa0a6d5d1e5aac6cfd5e6.tar.bz2 uGFX-788bd442559bf2d7cbbaa0a6d5d1e5aac6cfd5e6.zip | |
Merge pull request #64 from niamster/master
Touch panel LLD for olimex pic32mx board
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ginput/touch/MCU/ginput_lld_mouse.c | 2 | ||||
| -rw-r--r-- | drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_pic32mx_lcd.h | 164 |
2 files changed, 166 insertions, 0 deletions
diff --git a/drivers/ginput/touch/MCU/ginput_lld_mouse.c b/drivers/ginput/touch/MCU/ginput_lld_mouse.c index 2a5b6944..1b7e1988 100644 --- a/drivers/ginput/touch/MCU/ginput_lld_mouse.c +++ b/drivers/ginput/touch/MCU/ginput_lld_mouse.c @@ -40,6 +40,8 @@ #include "ginput_lld_mouse_board.h"
#elif defined(BOARD_OLIMEX_STM32_LCD)
#include "ginput_lld_mouse_board_olimex_stm32_lcd.h"
+#elif defined(BOARD_OLIMEX_PIC32MX_LCD)
+ #include "ginput_lld_mouse_board_olimex_pic32mx_lcd.h"
#else
#include "ginput_lld_mouse_board.h"
#endif
diff --git a/drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_pic32mx_lcd.h b/drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_pic32mx_lcd.h new file mode 100644 index 00000000..4f55124d --- /dev/null +++ b/drivers/ginput/touch/MCU/ginput_lld_mouse_board_olimex_pic32mx_lcd.h @@ -0,0 +1,164 @@ +/*
+ ChibiOS/GFX - Copyright (C) 2013
+ 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.
+ *
+ * @defgroup Mouse Mouse
+ * @ingroup GINPUT
+ *
+ * @{
+ */
+
+#ifndef _GINPUT_LLD_MOUSE_BOARD_H
+#define _GINPUT_LLD_MOUSE_BOARD_H
+
+static const ADCConfig ADCC = {
+ .vref = ADC_VREF_CFG_AVDD_AVSS,
+ .stime = 15,
+ .irq = EIC_IRQ_ADC,
+ .base = _ADC10_BASE_ADDRESS,
+};
+static struct ADCDriver ADCD;
+
+#define YNEG 13 // U
+#define XNEG 15 // R
+#define XPOS 12 // L
+#define YPOS 11 // D
+
+#define ADC_MAX 1023
+
+#define TOUCH_THRESHOULD 50
+
+static const ADCConversionGroup ADC_X_CG = {
+ .circular = FALSE,
+ .num_channels = 1,
+ .channels = 1 << XNEG,
+};
+
+static const ADCConversionGroup ADC_Y_CG = {
+ .circular = FALSE,
+ .num_channels = 1,
+ .channels = 1 << YPOS,
+};
+
+/**
+ * @brief Initialise the board for the touch.
+ *
+ * @notapi
+ */
+static inline void init_board(void) {
+ adcObjectInit(&ADCD);
+ adcStart(&ADCD, &ADCC);
+}
+
+/**
+ * @brief Check whether the surface is currently touched
+ * @return TRUE if the surface is currently touched
+ *
+ * @notapi
+ */
+static inline bool_t getpin_pressed(void) {
+ adcsample_t samples[2] = {0, };
+
+ // Set X+ to ground
+ palSetPadMode(IOPORTB, XPOS, PAL_MODE_OUTPUT);
+ palClearPad(IOPORTB, XPOS);
+
+ // Set Y- to VCC
+ palSetPadMode(IOPORTB, YNEG, PAL_MODE_OUTPUT);
+ palSetPad(IOPORTB, YNEG);
+
+ palSetPadMode(IOPORTB, XNEG, PAL_MODE_INPUT_ANALOG);
+ palSetPadMode(IOPORTB, YPOS, PAL_MODE_INPUT_ANALOG);
+
+ adcConvert(&ADCD, &ADC_X_CG, &samples[0], 1);
+ adcConvert(&ADCD, &ADC_Y_CG, &samples[1], 1);
+
+ return (ADC_MAX - (samples[1] - samples[0])) > TOUCH_THRESHOULD;
+}
+
+/**
+ * @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) {
+ adcsample_t sample;
+
+ palSetPadMode(IOPORTB, XPOS, PAL_MODE_OUTPUT);
+ palSetPad(IOPORTB, XPOS);
+
+ palSetPadMode(IOPORTB, XNEG, PAL_MODE_OUTPUT);
+ palClearPad(IOPORTB, XNEG);
+
+ palSetPadMode(IOPORTB, YNEG, PAL_MODE_INPUT);
+
+ palSetPadMode(IOPORTB, YPOS, PAL_MODE_INPUT_ANALOG);
+
+ adcConvert(&ADCD, &ADC_Y_CG, &sample, 1);
+
+ return ADC_MAX - sample;
+}
+
+/**
+ * @brief Read an y value from touch controller
+ * @return The value read from the controller
+ *
+ * @notapi
+ */
+static inline uint16_t read_y_value(void) {
+ adcsample_t sample;
+
+ palSetPadMode(IOPORTB, YNEG, PAL_MODE_OUTPUT);
+ palClearPad(IOPORTB, YNEG);
+
+ palSetPadMode(IOPORTB, YPOS, PAL_MODE_OUTPUT);
+ palSetPad(IOPORTB, YPOS);
+
+ palSetPadMode(IOPORTB, XPOS, PAL_MODE_INPUT);
+
+ palSetPadMode(IOPORTB, XNEG, PAL_MODE_INPUT_ANALOG);
+
+ adcConvert(&ADCD, &ADC_X_CG, &sample, 1);
+
+ return ADC_MAX - sample;
+}
+
+#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
+/** @} */
|