1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/gdisp/SSD1306/board_SSD1306_i2c.h b/drivers/gdisp/SSD1306/board_SSD1306_i2c.h
new file mode 100644
index 00000000..c89562e0
--- /dev/null
+++ b/drivers/gdisp/SSD1306/board_SSD1306_i2c.h
@@ -0,0 +1,121 @@
+/*
+ * 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    drivers/gdisp/SSD1306/board_SSD1306_i2c.h
+ * @brief   GDISP Graphic Driver subsystem board interface for the SSD1306 display.
+ */
+
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+#define GDISP_BUS_MAX_TRANSFER_SIZE		64
+
+// For a multiple display configuration we would put all this in a structure and then
+//	set g->board to that structure.
+#define SSD1306_RESET_PORT		GPIOB
+#define SSD1306_RESET_PIN		5
+
+/**
+ * The default slave address is 0x3D, (talking about
+ * only the real address part here) and the slave
+ * address can be changed to 0x3C by soldering the
+ * SA0 pads on the bottom side of the module.
+ *
+ * b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0
+ * --------------------------------------
+ * 0  | 1  | 1  | 1  | 1  | 0  |SA0 | R/W
+ */
+#define SSD1306_I2C_ADDRESS   	0x3D
+#define SSD1306_SDA_PORT		GPIOB
+#define SSD1306_SDA_PIN			7
+#define SSD1306_SCL_PORT		GPIOB
+#define SSD1306_SCL_PIN			6
+#define SET_RST					palSetPad(SSD1306_RESET_PORT, SSD1306_RESET_PIN);
+#define CLR_RST					palClearPad(SSD1306_RESET_PORT, SSD1306_RESET_PIN);
+
+// I2C configuration structure.
+static I2CConfig i2cconfig;
+
+static inline void init_board(GDisplay *g) {
+
+	// As we are not using multiple displays we set g->board to NULL as we don't use it.
+	g->board = 0;
+
+	switch(g->controllerdisplay) {
+	case 0:											// Set up for Display 0
+		// RESET pin.
+		palSetPadMode(SSD1306_RESET_PORT, SSD1306_RESET_PIN, PAL_MODE_OUTPUT_PUSHPULL);
+
+
+		/*
+		 * Initializes the I2C driver 1. The I2C1 signals are routed as follows:
+		 * PB6 - SCL.
+		 * PB7 - SDA.
+		 * Timing value comes from ST I2C config tool (xls):
+		 * 0x00901D2B;		// 100kHz Standard Mode
+		 * 0x00300444;		// 100kHz Fast Mode
+		 * 0x0030020A;		// 400kHz Fast Mode
+		 * 0x00100002;		// 800kHz Fast Mode +
+		 */
+		i2cconfig.timingr = 0x00100002;		// 800kHz Fast Mode+
+		i2cInit();
+		palSetPadMode(SSD1306_SCL_PORT, SSD1306_SCL_PIN, PAL_MODE_ALTERNATE(1));
+		palSetPadMode(SSD1306_SDA_PORT, SSD1306_SDA_PIN, PAL_MODE_ALTERNATE(1));
+		break;
+	}
+}
+
+static inline void post_init_board(GDisplay *g) {
+	(void) g;
+}
+
+static inline void setpin_reset(GDisplay *g, bool_t state) {
+	(void) g;
+	if(state)
+		CLR_RST
+	else
+		SET_RST
+}
+
+static inline void acquire_bus(GDisplay *g) {
+	(void) g;
+	i2cAcquireBus(&I2CD1);
+}
+
+static inline void release_bus(GDisplay *g) {
+	(void) g;
+	i2cReleaseBus(&I2CD1);
+}
+
+static inline void write_cmd(GDisplay *g, uint8_t cmd) {
+	uint8_t command[2];
+	(void) g;
+
+	command[0] = 0x00;		// Co = 0, D/C = 0
+	command[1] = cmd;
+
+	i2cStart(&I2CD1, &i2cconfig);
+	i2cMasterTransmitTimeout(&I2CD1, SSD1306_I2C_ADDRESS, command, 2, NULL, 0, MS2ST(10));
+	i2cStop(&I2CD1);
+}
+
+static inline void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
+	uint8_t command[1];
+	(void) g;
+
+	command[0] = 0x40; 		// Co = 0, D/C = 1
+
+	i2cStart(&I2CD1, &i2cconfig);
+	i2cMasterTransmitTimeout(&I2CD1, SSD1306_I2C_ADDRESS, command, 1, NULL, 0, MS2ST(10));
+	i2cMasterTransmitTimeout(&I2CD1, SSD1306_I2C_ADDRESS, command, data, NULL, length, MS2ST(10));
+	i2cStop(&I2CD1);
+}
+
+#endif /* _GDISP_LLD_BOARD_H */
+
+