1 files changed, 152 insertions, 0 deletions
diff --git a/boards/base/Mikromedia-STM32-M4-ILI9341/ginput_lld_mouse_board.h b/boards/base/Mikromedia-STM32-M4-ILI9341/ginput_lld_mouse_board.h
new file mode 100644
index 00000000..373a2474
--- /dev/null
+++ b/boards/base/Mikromedia-STM32-M4-ILI9341/ginput_lld_mouse_board.h
@@ -0,0 +1,152 @@
+/*
+ * 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    boards/base/Mikromedia-STM32-M4-ILI9341/ginput_lld_mouse_board.h
+ * @brief   GINPUT Touch low level driver source for the MCU.
+ */
+
+#ifndef _GINPUT_LLD_MOUSE_BOARD_H
+#define _GINPUT_LLD_MOUSE_BOARD_H
+
+/* read ADC if more than this many ticks since last read */
+#define ADC_UPDATE_INTERVAL 3
+
+#define ADC_NUM_CHANNELS   2
+#define ADC_BUF_DEPTH      1
+
+static const ADCConversionGroup adcgrpcfg = {
+  FALSE,
+  ADC_NUM_CHANNELS,
+  NULL,
+  NULL,
+  /* HW dependent part.*/
+  0,
+  ADC_CR2_SWSTART,
+  0,
+  0,
+  ADC_SQR1_NUM_CH(ADC_NUM_CHANNELS),
+  0,
+  ADC_SQR3_SQ2_N(ADC_CHANNEL_IN8) | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN9)
+};
+
+static systime_t last_update;
+static volatile uint16_t tpx, tpy, detect;
+
+static inline void delay(uint16_t dly) {
+  static uint16_t i;
+  for(i = 0; i < dly; i++)
+    asm("nop");
+}
+
+
+void read_mikro_tp(void) {
+	systime_t now = chTimeNow();
+
+	adcsample_t samples[ADC_NUM_CHANNELS * ADC_BUF_DEPTH];
+	uint16_t _detect, _tpx, _tpy;
+
+	if(now < last_update || ((now - last_update) > ADC_UPDATE_INTERVAL)) {
+		// detect button press
+		// sample[0] will go from ~200 to ~4000 when pressed
+	    adcConvert(&ADCD1, &adcgrpcfg, samples, ADC_BUF_DEPTH);
+	    _detect = samples[0];
+
+	    // read x channel
+	   	palSetPad(GPIOB, GPIOB_DRIVEA);
+	    palClearPad(GPIOB, GPIOB_DRIVEB);
+	    chThdSleepMilliseconds(1);
+	    adcConvert(&ADCD1, &adcgrpcfg, samples, ADC_BUF_DEPTH);
+	    _tpx = samples[1];
+
+	    // read y channel (invert)
+	    palClearPad(GPIOB, GPIOB_DRIVEA);
+	    palSetPad(GPIOB, GPIOB_DRIVEB);
+	    chThdSleepMilliseconds(1);
+	    adcConvert(&ADCD1, &adcgrpcfg, samples, ADC_BUF_DEPTH);
+	    _tpy = samples[0];
+
+	    // ready for next read
+	    palClearPad(GPIOB, GPIOB_DRIVEA);
+	    palClearPad(GPIOB, GPIOB_DRIVEB);
+
+	    chSysLock();
+	   	tpx = _tpx;
+	   	tpy = _tpy;
+	   	detect = _detect;
+	    last_update = now;
+	    chSysUnlock();
+	}
+}
+
+/**
+ * @brief   Initialise the board for the touch.
+ *
+ * @notapi
+ */
+static inline void init_board(void) {
+	adcStart(&ADCD1, NULL);
+	last_update = chTimeNow();
+
+	// leave DRIVEA & DRIVEB ready for next read
+	palClearPad(GPIOB, GPIOB_DRIVEA);
+	palClearPad(GPIOB, GPIOB_DRIVEB);
+	chThdSleepMilliseconds(1);
+}
+
+/**
+ * @brief   Check whether the surface is currently touched
+ * @return	TRUE if the surface is currently touched
+ *
+ * @notapi
+ */
+static inline bool_t getpin_pressed(void) {
+	read_mikro_tp();
+	return (detect > 2000) ? true : false;
+}
+
+/**
+ * @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) {
+	read_mikro_tp();
+	return tpx;
+}
+
+/**
+ * @brief   Read an y value from touch controller
+ * @return	The value read from the controller
+ *
+ * @notapi
+ */
+static inline uint16_t read_y_value(void) {
+	read_mikro_tp();
+	return tpy;
+}
+
+#endif /* _GINPUT_LLD_MOUSE_BOARD_H */