From 5b2fff679de51ccb9097ebbf8cb8f2fe2ff778b7 Mon Sep 17 00:00:00 2001
From: inmarket <andrewh@inmarket.com.au>
Date: Sat, 7 Feb 2015 01:14:16 +1000
Subject: [PATCH] Add TLS8204 on UEXT (Olimex MOD3310) to the SAM7EX256 board

---
 .../base/Olimex-SAM7EX256-GE8/board_TLS8204.h | 158 ++++++++++++++++++
 boards/base/Olimex-SAM7EX256-GE8/readme.txt   |   3 +
 2 files changed, 161 insertions(+)
 create mode 100644 boards/base/Olimex-SAM7EX256-GE8/board_TLS8204.h

diff --git a/boards/base/Olimex-SAM7EX256-GE8/board_TLS8204.h b/boards/base/Olimex-SAM7EX256-GE8/board_TLS8204.h
new file mode 100644
index 00000000..a548b832
--- /dev/null
+++ b/boards/base/Olimex-SAM7EX256-GE8/board_TLS8204.h
@@ -0,0 +1,158 @@
+/*
+ * 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 _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+#include "board_uext.h"
+
+#define PORT_RESET		UEXT_PORT_PIN5
+#define PIN_RESET		UEXT_PORTPIN_PIN5
+#define PORT_DC			UEXT_PORT_PIN6
+#define PIN_DC			UEXT_PORTPIN_PIN6
+
+#define BIT_BASH		TRUE				// Native SPI is not working yet
+#define DIRECT_IO		TRUE				// ChibiOS for the AT91SAM7 requires patch 7669 or higher if DIRECT_IO is FALSE
+
+#if DIRECT_IO
+	#define PinIsOutput(port,pin)		((port)->PIO_OER = 1 << (pin), (port)->PIO_PER = 1 << (pin), (port)->PIO_MDDR = 1 << (pin), (port)->PIO_PPUDR = 1 << (pin))
+	#define PinSet(port,pin)			(port)->PIO_SODR = 1 << (pin)
+	#define PinClear(port,pin)			(port)->PIO_CODR = 1 << (pin)
+#else
+	#define PinIsOutput(port,pin)		palSetPadMode((port), (pin), PAL_MODE_OUTPUT_PUSHPULL)
+	#define PinSet(port,pin)			palSetPad((port), (pin))
+	#define PinClear(port,pin)			palClearPad((port), (pin))
+#endif
+
+#if BIT_BASH
+	// simple delays
+	void Delay(volatile unsigned long a) { while (a!=0) a--; }
+	void Delayc(volatile unsigned char a) { while (a!=0) a--; }
+#else
+	static const SPIConfig spiconfig = {
+		0,
+		/* HW dependent part.*/
+		UEXT_SPI_CS_PORT,
+		UEXT_SPI_CS_PORTPIN,
+		0x01010801			// For AT91SAM7:	8bit, CPOL=1, NCPHA = 0, ClockPhase=0, SCLK = 48Mhz/8 = 6MHz
+	};
+#endif
+
+static inline void init_board(GDisplay *g) {
+	(void) g;
+
+	PinIsOutput	(PORT_DC, PIN_DC);
+	PinIsOutput	(PORT_RESET, PIN_RESET);
+	PinSet		(PORT_RESET, PIN_RESET);
+
+	PinIsOutput	(UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
+	PinSet		(UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
+
+	#if BIT_BASH
+		PinIsOutput	(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
+		PinSet		(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
+		PinIsOutput	(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
+		PinSet		(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
+	#endif
+}
+
+static inline void post_init_board(GDisplay *g) {
+	(void) g;
+}
+
+static inline void setpin_reset(GDisplay *g, bool_t state) {
+	(void) g;
+	(void) state;
+
+	if (state)
+		PinClear(PORT_RESET, PIN_RESET);
+	else
+		PinSet(PORT_RESET, PIN_RESET);
+}
+
+static inline void set_backlight(GDisplay *g, uint8_t percent) {
+	(void) g;
+	(void) percent;
+}
+
+static inline void acquire_bus(GDisplay *g) {
+	(void) g;
+
+	#if BIT_BASH
+		PinClear(UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
+	#else
+		spiStart(UEXT_SPI, &spiconfig);
+		spiSelect(UEXT_SPI);
+	#endif
+}
+
+static inline void release_bus(GDisplay *g) {
+	(void) g;
+
+	#if BIT_BASH
+		PinSet(UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
+	#else
+		spiUnselect(UEXT_SPI);
+		spiStop(UEXT_SPI);
+	#endif
+}
+
+static inline void write_cmd(GDisplay *g, uint8_t cmd) {
+	(void) g;
+
+	// Command mode please
+	PinClear(PORT_DC, PIN_DC);
+
+	#if BIT_BASH
+	{
+		uint8_t bit;
+
+
+		for(bit = 0x80; bit; bit >>= 1) {
+			if(cmd & bit)
+				PinSet(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
+			else
+				PinClear(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
+			Delay(1);
+			PinClear(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
+			Delay(1);
+			PinSet(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
+		}
+	}
+	#else
+		spiStartSend(UEXT_SPI, 1, &cmd);
+	#endif
+}
+
+static inline void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
+	(void) g;
+
+	// Data mode please
+	PinSet(PORT_DC, PIN_DC);
+
+	#if BIT_BASH
+		while(length--) {
+			uint8_t bit;
+
+			for(bit = 0x80; bit; bit >>= 1) {
+				if(*data & bit)
+					PinSet(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
+				else
+					PinClear(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
+				Delay(1);
+				PinClear(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
+				Delay(1);
+				PinSet(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
+			}
+			data++;
+		}
+	#else
+		spiStartSend(UEXT_SPI, length, data);
+	#endif
+}
+
+#endif /* _GDISP_LLD_BOARD_H */
diff --git a/boards/base/Olimex-SAM7EX256-GE8/readme.txt b/boards/base/Olimex-SAM7EX256-GE8/readme.txt
index f613dee3..2910f815 100644
--- a/boards/base/Olimex-SAM7EX256-GE8/readme.txt
+++ b/boards/base/Olimex-SAM7EX256-GE8/readme.txt
@@ -12,3 +12,6 @@ Note there are two variants of this board - one with the GE8 display
 	and one with the GE12 display. This one is for the GE8 display.
 	
 There is an example Makefile and project in the examples directory.
+
+There are also board files predefined for (just add driver to the makefile):
+	- TLS8204 on the UEXT connector (Olimex MOD3310)
\ No newline at end of file