Adding STM32F429i-Discovery touch support (not working yet)

boards/base/STM32F429i-Discovery/board.mk

@@ -4,5 +4,4 @@ GFXSRC  +=	$(GFXLIB)/boards/base/STM32F429i-Discovery/stm32f429i_discovery_sdram
 
 GFXDEFS += -DGFX_USE_OS_CHIBIOS=TRUE
 include $(GFXLIB)/drivers/gdisp/STM32F429iDiscovery/driver.mk
-#include $(GFXLIB)/drivers/ginput/touch/MCU/driver.mk
+include $(GFXLIB)/drivers/ginput/touch/STMPE811/driver.mk
-#include $(GFXLIB)/drivers/gaudio/vs1053/driver.mk

boards/base/STM32F429i-Discovery/example_chibios_2.x/halconf.h

@@ -76,7 +76,7 @@
  * @brief   Enables the I2C subsystem.
  */
 #if !defined(HAL_USE_I2C) || defined(__DOXYGEN__)
-#define HAL_USE_I2C                 FALSE
+#define HAL_USE_I2C                 TRUE
 #endif
 
 /**

boards/base/STM32F429i-Discovery/example_chibios_2.x/mcuconf.h

@@ -138,7 +138,7 @@
  */
 #define STM32_I2C_USE_I2C1                  FALSE
 #define STM32_I2C_USE_I2C2                  FALSE
-#define STM32_I2C_USE_I2C3                  FALSE
+#define STM32_I2C_USE_I2C3                  TRUE
 #define STM32_I2C_I2C1_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 0)
 #define STM32_I2C_I2C1_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 6)
 #define STM32_I2C_I2C2_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 2)

boards/base/STM32F429i-Discovery/gmouse_lld_STMPE811_board.h

@@ -0,0 +1,116 @@
+/*
+ * 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 _GINPUT_LLD_MOUSE_BOARD_H
+#define _GINPUT_LLD_MOUSE_BOARD_H
+
+// Resolution and Accuracy Settings
+#define GMOUSE_STMPE811_PEN_CALIBRATE_ERROR		8
+#define GMOUSE_STMPE811_PEN_CLICK_ERROR			6
+#define GMOUSE_STMPE811_PEN_MOVE_ERROR			4
+#define GMOUSE_STMPE811_FINGER_CALIBRATE_ERROR	14
+#define GMOUSE_STMPE811_FINGER_CLICK_ERROR		18
+#define GMOUSE_STMPE811_FINGER_MOVE_ERROR		14
+
+// How much extra data to allocate at the end of the GMouse structure for the board's use
+#define GMOUSE_STMPE811_BOARD_DATA_SIZE			0
+
+// Set this to TRUE if you want self-calibration.
+//	NOTE:	This is not as accurate as real calibration.
+//			It requires the orientation of the touch panel to match the display.
+//			It requires the active area of the touch panel to exactly match the display size.
+#define GMOUSE_STMPE811_SELF_CALIBRATE			FALSE
+
+// If TRUE this board has the STMPE811 IRQ pin connected to a GPIO.
+#define GMOUSE_STMPE811_GPIO_IRQPIN				TRUE
+
+// If TRUE this is a really slow CPU and we should always clear the FIFO between reads.
+#define GMOUSE_STMPE811_SLOW_CPU				FALSE
+
+// Maximum timeout
+#define STMPE811_TIMEOUT			0x3000
+
+static const I2CConfig i2ccfg = {
+	OPMODE_I2C,
+	400000,
+	FAST_DUTY_CYCLE_2,
+};
+
+static bool_t init_board(GMouse* m, unsigned driverinstance) {
+	(void)		m;
+
+	// This board only supports one touch panel
+	if (driverinstance)
+		return FALSE;
+
+	palSetPadMode(GPIOA, 15, PAL_MODE_INPUT | PAL_STM32_PUDR_FLOATING);			/* TP IRQ */
+	palSetPadMode(GPIOA, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN);	/* SCL */
+	palSetPadMode(GPIOC, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN);	/* SDA */
+
+	i2cStart(&I2CD3, &i2ccfg);
+
+	return TRUE;
+}
+
+#if GMOUSE_STMPE811_GPIO_IRQPIN
+	static bool_t getpin_irq(GMouse* m) {
+		(void)		m;
+
+		return !palReadPad(GPIOA, 15);
+	}
+#endif
+
+static inline void aquire_bus(GMouse* m) {
+	(void)		m;
+
+}
+
+static inline void release_bus(GMouse* m) {
+	(void)		m;
+
+}
+
+static void write_reg(GMouse* m, uint8_t reg, uint8_t val) {
+	uint8_t		txbuf[2];
+	(void)		m;
+
+	txbuf[0] = reg;
+	txbuf[1] = val;
+
+	i2cAcquireBus(&I2CD3);
+	i2cMasterTransmitTimeout(&I2CD3, STMPE811_ADDR, txbuf, 2, 0, 0, MS2ST(STMPE811_TIMEOUT));
+	i2cReleaseBus(&I2CD3);
+}
+
+static uint8_t read_byte(GMouse* m, uint8_t reg) {
+	uint8_t		rxbuf[1];
+	(void)		m;
+
+	rxbuf[0] = 0;
+
+	i2cAcquireBus(&I2CD3);
+	i2cMasterTransmitTimeout(&I2CD3, STMPE811_ADDR, &reg, 1, rxbuf, 1, MS2ST(STMPE811_TIMEOUT));
+	i2cReleaseBus(&I2CD3);
+
+	return rxbuf[0];
+}
+
+static uint16_t read_word(GMouse* m, uint8_t reg) {
+	uint8_t		rxbuf[2];
+	(void)		m;
+
+	rxbuf[0] = 0;
+	rxbuf[1] = 0;
+
+	i2cAcquireBus(&I2CD3);
+	i2cMasterTransmitTimeout(&I2CD3, STMPE811_ADDR, &reg, 1, rxbuf, 2, MS2ST(STMPE811_TIMEOUT));
+	i2cReleaseBus(&I2CD3);
+
+	return (((uint16_t)rxbuf[0]) << 8) | rxbuf[1];
+}
+
+#endif /* _GINPUT_LLD_MOUSE_BOARD_H */