first commit PCF8812 driver

5 files changed, 336 insertions, 0 deletions

diff --git a/drivers/gdisp/PCF8812/PCF8812.h b/drivers/gdisp/PCF8812/PCF8812.h
new file mode 100644
index 00000000..6faec88a
--- /dev/null
+++ b/drivers/gdisp/PCF8812/PCF8812.h
@@ -0,0 +1,53 @@
+/*
+ * 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 _PCF8812_H
+#define _PCF8812_H
+
+#define PCF8812_SET_FUNC    		0x20  // Function set
+#define PCF8812_H 					0x01
+#define PCF8812_V 					0x02
+#define PCF8812_PD					0x04
+
+#define PCF8812_DISPLAY				0x08
+#define PCF8812_DISPLAY_MODE_BLANK	0x00  // bit D = 0, E = 0
+#define PCF8812_DISPLAY_MODE_FILL 	0x01  // bit D = 0, E = 1
+#define PCF8812_DISPLAY_MODE_NORMAL	0x04  // bit D = 1, E = 0
+#define PCF8812_DISPLAY_MODE_INVERT	0x05  // bit D = 1, E = 1
+
+#define PCF8812_SET_PRS				0x10  // Set Vop range, VLCD programming range select
+
+#define PCF8812_SET_Y				0x04  // 0 0  1  0  0 Y3 Y2 Y1 Y0
+#define PCF8812_SET_X				0x80  // 0 1 X6 X5 X4 X3 X2 X1 X0
+
+// =========================================
+
+#define PCF8812_TEMP_CONTROL		0x04  // set temperature coefficient (TCx)
+#define PCF8812_TEMP_MODE_0			0x00  // TC1 = 0, TC0 = 0
+#define PCF8812_TEMP_MODE_1			0x01  // TC1 = 0, TC0 = 1
+#define PCF8812_TEMP_MODE_2			0x02  // TC1 = 1, TC0 = 0
+#define PCF8812_TEMP_MODE_3			0x03  // TC1 = 1, TC0 = 1
+
+#define PCF8812_SET_VMULT			0x08  // Set voltage multiplier factor
+#define PCF8812_VMULT_MODE_0		0x00  // S1 = 0, S0 = 0 - 2 × voltage multiplier
+#define PCF8812_VMULT_MODE_1		0x01  // S1 = 0, S0 = 1 - 3 × voltage multiplier
+#define PCF8812_VMULT_MODE_2		0x02  // S1 = 1, S0 = 0 - 4 × voltage multiplier
+#define PCF8812_VMULT_MODE_3		0x03  // S1 = 1, S0 = 1 - 5 × voltage multiplier
+ 
+#define PCF8812_SET_BIAS			0x10  // set bias system (BSx)
+#define PCF8812_BIAS_MODE_7			0x00  // 1 to 100
+#define PCF8812_BIAS_MODE_6			0x01  // 1 to 80
+#define PCF8812_BIAS_MODE_5			0x02  // 1 to 65
+#define PCF8812_BIAS_MODE_4			0x03  // 1 to 48
+#define PCF8812_BIAS_MODE_3			0x04  // 1 to 40 or 1 to 34
+#define PCF8812_BIAS_MODE_2			0x05  // 1 to 24
+#define PCF8812_BIAS_MODE_1			0x06  // 1 to 18 or 1 to 16
+#define PCF8812_BIAS_MODE_0			0x07  // 1 to 10 or 1 to 9 or 1 to 8
+
+#define PCF8812_SET_VOP				0x80  // write VOP to register, 1 VOP6 VOP5 VOP4 VOP3 VOP2 VOP1 VOP0
+
+#endif /* _PCF8812_H */
diff --git a/drivers/gdisp/PCF8812/board_PCF8812_template.h b/drivers/gdisp/PCF8812/board_PCF8812_template.h
new file mode 100644
index 00000000..08ec130d
--- /dev/null
+++ b/drivers/gdisp/PCF8812/board_PCF8812_template.h
@@ -0,0 +1,43 @@
+/*
+ * 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
+
+static inline void init_board(GDisplay *g) {
+	(void) g;
+}
+
+static inline void post_init_board(GDisplay *g) {
+	(void) g;
+}
+
+static inline void setpin_reset(GDisplay *g, bool_t state) {
+	(void) g;
+	(void) state;
+}
+
+static inline void acquire_bus(GDisplay *g) {
+	(void) g;
+}
+
+static inline void release_bus(GDisplay *g) {
+	(void) g;
+}
+
+static inline void write_cmd(GDisplay *g, uint8_t cmd) {
+	(void) g;
+	(void) cmd;
+}
+
+static inline void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
+	(void) g;
+	(void) data;
+	(void) length;
+}
+
+#endif /* _GDISP_LLD_BOARD_H */
diff --git a/drivers/gdisp/PCF8812/gdisp_lld.mk b/drivers/gdisp/PCF8812/gdisp_lld.mk
new file mode 100644
index 00000000..f2394eaf
--- /dev/null
+++ b/drivers/gdisp/PCF8812/gdisp_lld.mk
@@ -0,0 +1,2 @@
+GFXINC += $(GFXLIB)/drivers/gdisp/PCF8812
+GFXSRC += $(GFXLIB)/drivers/gdisp/PCF8812/gdisp_lld_PCF8812.c
diff --git a/drivers/gdisp/PCF8812/gdisp_lld_PCF8812.c b/drivers/gdisp/PCF8812/gdisp_lld_PCF8812.c
new file mode 100644
index 00000000..083f6d50
--- /dev/null
+++ b/drivers/gdisp/PCF8812/gdisp_lld_PCF8812.c
@@ -0,0 +1,213 @@
+/*
+ * 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
+ */
+
+#include "gfx.h"
+
+#if GFX_USE_GDISP
+
+#define GDISP_DRIVER_VMT			GDISPVMT_PCF8812
+#include "drivers/gdisp/PCF8812/gdisp_lld_config.h"
+#include "src/gdisp/driver.h"
+
+#include "board_PCF8812.h"
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+#ifndef GDISP_SCREEN_HEIGHT
+	#define GDISP_SCREEN_HEIGHT		65
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+	#define GDISP_SCREEN_WIDTH		102
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+	#define GDISP_INITIAL_CONTRAST	51
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+	#define GDISP_INITIAL_BACKLIGHT	100
+#endif
+
+#define GDISP_FLG_NEEDFLUSH			(GDISP_FLG_DRIVER<<0)
+
+#include "drivers/gdisp/PCF8812/PCF8812.h"
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+// Some common routines and macros
+#define RAM(g)				((uint8_t *)g->priv)
+
+#define xyaddr(x, y)		((x) + ((y)>>3)*GDISP_SCREEN_WIDTH)
+#define xybit(y)			(1<<((y)&7))
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/*
+ * As this controller can't update on a pixel boundary we need to maintain the
+ * the entire display surface in memory so that we can do the necessary bit
+ * operations. Fortunately it is a small display in monochrome.
+ * 65 * 102 / 8 = 829 bytes.
+ */
+
+LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
+	// The private area is the display surface.
+	g->priv = gfxAlloc((GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8));
+
+	// Initialise the board interface
+	init_board(g);
+
+	// Hardware reset
+	setpin_reset(g, TRUE);
+	gfxSleepMilliseconds(100);
+	setpin_reset(g, FALSE);
+	gfxSleepMilliseconds(100);
+
+	acquire_bus(g);
+
+	write_cmd(g, PCF8812_SET_FUNC | PCF8812_H);
+	write_cmd(g, PCF8812_TEMP_CONTROL | PCF8812_TEMP_MODE_1);
+	write_cmd(g, PCF8812_SET_VMULT | PCF8812_VMULT_MODE_1);
+	write_cmd(g, PCF8812_SET_VOP | 0xFF);
+	write_cmd(g, PCF8812_SET_FUNC);
+	write_cmd(g, PCF8812_DISPLAY | PCF8812_DISPLAY_MODE_NORMAL);
+
+
+
+	unsigned int i;
+	for (i = 0; i < (GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8); ++i)
+	{
+		RAM(g)[i] &= 0x00; 
+		write_data(g, (uint8_t*)0x00, 1);
+	}
+
+    // Finish Init
+    post_init_board(g);
+
+ 	// Release the bus
+	release_bus(g);
+
+	/* Initialise the GDISP structure */
+	g->g.Width = GDISP_SCREEN_WIDTH;
+	g->g.Height = GDISP_SCREEN_HEIGHT;
+	g->g.Orientation = GDISP_ROTATE_0;
+	g->g.Powermode = powerOn;
+	g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
+	g->g.Contrast = GDISP_INITIAL_CONTRAST;
+
+	return TRUE;
+}
+
+#if GDISP_HARDWARE_FLUSH
+	LLDSPEC void gdisp_lld_flush(GDisplay *g) {
+
+		// Don't flush if we don't need it.
+		if (!(g->flags & GDISP_FLG_NEEDFLUSH))
+			return;
+
+		unsigned int i;
+
+		acquire_bus(g);
+		for (i = 0; i < (GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT / 8); i += GDISP_SCREEN_WIDTH) {
+			write_data(g, RAM(g) + i, GDISP_SCREEN_WIDTH);
+		}
+		release_bus(g);
+	}
+#endif
+
+#if GDISP_HARDWARE_DRAWPIXEL
+	LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
+		coord_t		x, y;
+
+		switch(g->g.Orientation) {
+		default:
+		case GDISP_ROTATE_0:
+			x = g->p.x;
+			y = g->p.y;
+			break;
+		case GDISP_ROTATE_90:
+			x = g->p.y;
+			y = GDISP_SCREEN_HEIGHT-1 - g->p.x;
+			break;
+		case GDISP_ROTATE_180:
+			x = GDISP_SCREEN_WIDTH-1 - g->p.x;
+			y = GDISP_SCREEN_HEIGHT-1 - g->p.y;
+			break;
+		case GDISP_ROTATE_270:
+			x = GDISP_SCREEN_HEIGHT-1 - g->p.y;
+			y = g->p.x;
+			break;
+		}
+		if (gdispColor2Native(g->p.color) == Black)
+			RAM(g)[xyaddr(x, y)] |= xybit(y);
+		else
+			RAM(g)[xyaddr(x, y)] &= ~xybit(y);
+		g->flags |= GDISP_FLG_NEEDFLUSH;
+	}
+#endif
+
+#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
+	LLDSPEC void gdisp_lld_control(GDisplay *g) {
+		switch(g->p.x) {
+		case GDISP_CONTROL_POWER:
+			if (g->g.Powermode == (powermode_t)g->p.ptr)
+				return;
+			switch((powermode_t)g->p.ptr) {
+			case powerOff:
+			case powerSleep:
+			case powerDeepSleep:
+				acquire_bus(g);
+				write_cmd(g, PCF8812_DISPLAY_OFF);
+				release_bus(g);
+				break;
+			case powerOn:
+				acquire_bus(g);
+				write_cmd(g, PCF8812_DISPLAY_ON);
+				release_bus(g);
+				break;
+			default:
+				return;
+			}
+			g->g.Powermode = (powermode_t)g->p.ptr;
+			return;
+
+		case GDISP_CONTROL_ORIENTATION:
+			if (g->g.Orientation == (orientation_t)g->p.ptr)
+				return;
+			switch((orientation_t)g->p.ptr) {
+			/* Rotation is handled by the drawing routines */
+			case GDISP_ROTATE_0:
+			case GDISP_ROTATE_180:
+				g->g.Height = GDISP_SCREEN_HEIGHT;
+				g->g.Width = GDISP_SCREEN_WIDTH;
+				break;
+			case GDISP_ROTATE_90:
+			case GDISP_ROTATE_270:
+				g->g.Height = GDISP_SCREEN_WIDTH;
+				g->g.Width = GDISP_SCREEN_HEIGHT;
+				break;
+			default:
+				return;
+			}
+			g->g.Orientation = (orientation_t)g->p.ptr;
+			return;
+
+		case GDISP_CONTROL_CONTRAST:
+            if ((unsigned)g->p.ptr > 100)
+            	g->p.ptr = (void *)100;
+			acquire_bus(g);
+			release_bus(g);
+            g->g.Contrast = (unsigned)g->p.ptr;
+			return;
+		}
+	}
+#endif // GDISP_NEED_CONTROL
+
+#endif // GFX_USE_GDISP
diff --git a/drivers/gdisp/PCF8812/gdisp_lld_config.h b/drivers/gdisp/PCF8812/gdisp_lld_config.h
new file mode 100644
index 00000000..f95fc178
--- /dev/null
+++ b/drivers/gdisp/PCF8812/gdisp_lld_config.h
@@ -0,0 +1,25 @@
+/*
+ * 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_CONFIG_H
+#define _GDISP_LLD_CONFIG_H
+
+#if GFX_USE_GDISP
+
+/*===========================================================================*/
+/* Driver hardware support.                                                  */
+/*===========================================================================*/
+
+#define GDISP_HARDWARE_FLUSH			TRUE		// This controller requires flushing
+#define GDISP_HARDWARE_DRAWPIXEL		TRUE
+#define GDISP_HARDWARE_CONTROL			TRUE
+
+#define GDISP_LLD_PIXELFORMAT			GDISP_PIXELFORMAT_MONO
+
+#endif	/* GFX_USE_GDISP */
+
+#endif	/* _GDISP_LLD_CONFIG_H */