Merge pull request #66 from abhishek-kakkar/master

New LLD: ILI9481

1 files changed, 158 insertions, 0 deletions

diff --git a/drivers/gdisp/ILI9481/gdisp_lld_board_firebullstm32f103.h b/drivers/gdisp/ILI9481/gdisp_lld_board_firebullstm32f103.h
new file mode 100644
index 00000000..ce7af96f
--- /dev/null
+++ b/drivers/gdisp/ILI9481/gdisp_lld_board_firebullstm32f103.h
@@ -0,0 +1,158 @@
+/*
+    ChibiOS/GFX - Copyright (C) 2012, 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/gdisp/ILI9481/gdisp_lld_board_firebullstm32f103.h
+ * @brief   GDISP Graphics Driver subsystem low level driver source for
+ * 			the ILI9481 and compatible HVGA display
+ *
+ * @addtogroup GDISP
+ * @{
+ */
+
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+#define SET_CS		palSetPad(GPIOD, 12);
+#define CLR_CS		palClearPad(GPIOD, 12);
+#define SET_RS		palSetPad(GPIOD, 13);
+#define CLR_RS		palClearPad(GPIOD, 13);
+#define SET_WR		palSetPad(GPIOD, 14);
+#define CLR_WR		palClearPad(GPIOD, 14);
+#define SET_RD		palSetPad(GPIOD, 15);
+#define CLR_RD		palClearPad(GPIOD, 15);
+
+/**
+ * @brief   Initialise the board for the display.
+ * @notes	This board definition uses GPIO and assumes exclusive access to these GPIO pins
+ *
+ * @notapi
+ */
+static inline void init_board(void) {
+	palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
+	palSetPadMode(GPIOD, 12, PAL_MODE_OUTPUT_PUSHPULL);
+	palSetPadMode(GPIOD, 13, PAL_MODE_OUTPUT_PUSHPULL);
+	palSetPadMode(GPIOD, 14, PAL_MODE_OUTPUT_PUSHPULL);
+	palSetPadMode(GPIOD, 15, PAL_MODE_OUTPUT_PUSHPULL);
+	
+	// Configure the pins to a well know state
+	SET_RS;
+	SET_RD;
+	SET_WR;
+	CLR_CS;
+}
+
+
+/**
+ * @brief   Set or clear the lcd reset pin.
+ *
+ * @param[in] state		TRUE = lcd in reset, FALSE = normal operation
+ * 
+ * @notapi
+ */
+static inline void setpin_reset(bool_t state) {
+	(void) state;
+	/* Nothing to do here - reset pin tied to Vcc */
+}
+
+/**
+ * @brief   Set the lcd back-light level.
+ *
+ * @param[in] percent		0 to 100%
+ * 
+ * @notapi
+ */
+static inline void set_backlight(uint8_t percent) {
+	(void) percent;
+	/* Nothing to do here - Backlight always on */
+}
+
+/**
+ * @brief   Take exclusive control of the bus
+ *
+ * @notapi
+ */
+static inline void acquire_bus(void) {
+	/* Nothing to do here since LCD is the only device on that bus */
+}
+
+/**
+ * @brief   Release exclusive control of the bus
+ *
+ * @notapi
+ */
+static inline void release_bus(void) {
+	/* Nothing to do here since LCD is the only device on that bus */
+}
+
+/**
+ * @brief   Send data to the index register.
+ *
+ * @param[in] index		The index register to set
+ *
+ * @notapi
+ */
+static inline void write_index(uint16_t index) {
+	palWritePort(GPIOE, index);
+	CLR_RS; CLR_WR; SET_WR; SET_RS;
+}
+
+/**
+ * @brief   Send data to the lcd.
+ *
+ * @param[in] data		The data to send
+ * 
+ * @notapi
+ */
+static inline void write_data(uint16_t data) {
+	palWritePort(GPIOE, data);
+	CLR_WR; SET_WR;
+}
+
+#if GDISP_HARDWARE_READPIXEL || GDISP_HARDWARE_SCROLL || defined(__DOXYGEN__)
+/**
+ * @brief   Read data from the lcd.
+ *
+ * @return	The data from the lcd
+ * @note	The chip select may need to be asserted/de-asserted
+ * 			around the actual spi read
+ * 
+ * @notapi
+ */
+static inline uint16_t read_data(void) {
+	uint16_t	value;
+	
+	// change pin mode to digital input
+	palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_INPUT);
+
+	CLR_RD;
+	value = palReadPort(GPIOE);
+	value = palReadPort(GPIOE);
+	SET_RD;
+
+	// change pin mode back to digital output
+	palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
+	
+	return value;
+}
+#endif
+
+#endif /* _GDISP_LLD_BOARD_H */
+/** @} */