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path: root/drivers/gdisp/SSD1848/gdisp_lld_SSD1848.c
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Diffstat (limited to 'drivers/gdisp/SSD1848/gdisp_lld_SSD1848.c')
-rw-r--r--drivers/gdisp/SSD1848/gdisp_lld_SSD1848.c623
1 files changed, 623 insertions, 0 deletions
diff --git a/drivers/gdisp/SSD1848/gdisp_lld_SSD1848.c b/drivers/gdisp/SSD1848/gdisp_lld_SSD1848.c
new file mode 100644
index 00000000..de02a2e1
--- /dev/null
+++ b/drivers/gdisp/SSD1848/gdisp_lld_SSD1848.c
@@ -0,0 +1,623 @@
+/*
+ * 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_SSD1848
+#include "gdisp_lld_config.h"
+#include "../../../src/gdisp/gdisp_driver.h"
+
+typedef struct LCD_Parameters
+{
+ uint8_t curXPtr;
+ uint8_t startXPtr; /* The area start bit position in the start column */
+ uint8_t endXPtr; /* The area end bit position in the end column */
+ uint8_t curCol;
+ uint8_t startCol; /* The area start column */
+ uint8_t endCol; /* The area end column */
+ uint8_t curYPtr;
+} LCD_Parameters;
+
+#include "board_SSD1848.h"
+#include <string.h> /* for memset */
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#ifndef GDISP_SCREEN_HEIGHT
+ #define GDISP_SCREEN_HEIGHT 130
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+ #define GDISP_SCREEN_WIDTH 128
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+ #define GDISP_INITIAL_CONTRAST 80
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+ #define GDISP_INITIAL_BACKLIGHT 100
+#endif
+#ifdef SSD1848_PAGE_PREFIX
+ #define SSD1848_PAGE_WIDTH (GDISP_SCREEN_WIDTH + 1)
+ #define SSD1848_PAGE_OFFSET 1
+#else
+ #define SSD1848_PAGE_WIDTH GDISP_SCREEN_WIDTH
+ #define SSD1848_PAGE_OFFSET 0
+#endif
+
+#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
+
+#include "SSD1848.h"
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/* Some common routines and macros */
+#define PRM(g) ((LCD_Parameters *)g->priv)
+#define RAM(g) ((uint8_t *)(PRM(g)+1))
+#define write_cmd2(g, cmd1, cmd2) { spi_write_cmd (g, cmd1); spi_write_data (g, cmd2); }
+#define write_cmd3(g, cmd1, cmd2, cmd3) { spi_write_cmd (g, cmd1); spi_write_data2 (g, cmd2, cmd3); }
+
+#define xyaddr(x, y) (SSD1848_PAGE_OFFSET + (x) + ((y) >> 3) * SSD1848_PAGE_WIDTH)
+#define xybit(y) (1 << ((y) & 7))
+
+
+static void set_viewport (GDisplay* g)
+{
+ switch (g->g.Orientation)
+ {
+ default:
+ case GDISP_ROTATE_0:
+ spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
+ spi_write_data2 (g, (uint8_t) (g->p.x / 8), (uint8_t) ((g->p.x + g->p.cx - 1) / 8));
+ spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
+ spi_write_data2 (g, g->p.y, g->p.y + g->p.cy - 1);
+ spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
+ break;
+
+ case GDISP_ROTATE_90:
+ spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
+ spi_write_data2 (g, g->p.y, g->p.y + g->p.cy - 1);
+ spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
+ spi_write_data2 (g, g->g.Width - g->p.x - g->p.cx, g->g.Width - 1 - g->p.x);
+ spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
+ break;
+
+ case GDISP_ROTATE_180:
+ spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
+ spi_write_data2 (g, g->g.Width - g->p.x - g->p.cx, g->g.Width - 1 - g->p.x);
+ spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
+ spi_write_data2 (g, g->g.Height - g->p.y - g->p.cy, g->g.Height - 1 - g->p.y);
+ spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
+ break;
+
+ case GDISP_ROTATE_270:
+ spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
+ spi_write_data2 (g, g->g.Height - g->p.y - g->p.cy, g->g.Height - 1 - g->p.y);
+ spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
+ spi_write_data2 (g, g->p.x, g->p.x + g->p.cx - 1);
+ spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
+ break;
+ }
+}
+
+
+/**
+ * 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.
+ * 128 * 128 / 8 = 2048 bytes.
+ */
+
+LLDSPEC bool_t gdisp_lld_init (GDisplay *g)
+{
+ uint8_t temp [5] = { 0 };
+
+ /* The private area is the display surface. */
+ g->priv = gfxAlloc (sizeof(DisplayData) + GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
+ if (!g->priv)
+ return FALSE;
+ memset (g->priv, 0, sizeof(DisplayData) + GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
+
+ /* Initialise the board interface */
+ init_board (g);
+
+ /* Init LCD */
+ /* Hardware reset */
+ setpin_reset (g, FALSE);
+ gfxSleepMilliseconds (50);
+ setpin_reset (g, TRUE);
+ gfxSleepMilliseconds (50);
+ setpin_reset (g, FALSE);
+
+
+ acquire_bus (g);
+ gfxSleepMilliseconds (50);
+ spi_write_cmd (g, SSD1848_ENABLE_INTERNAL_CLOCK); /* 0xD1 */
+ spi_write_cmd (g, SSD1848_EXITSLEEP); /* 0x94 */
+ gfxSleepMilliseconds (20);
+
+ spi_write_cmd (g, SSD1848_SET_FRAME_FREQ_LINEINVE);
+ spi_write_data2 (g, 0x00, 0x00);
+
+ temp [0] = 0x00;
+ temp [1] = 0x0e;
+ temp [2] = 0x41;
+ spi_write_cmd (g, SSD1848_SET_BLACK_WHITE);
+ spi_write_data_array (g, temp, 3);
+
+ temp [0] = 0x00;
+ temp [1] = 0x00;
+ temp [2] = 0x00;
+ spi_write_cmd (g, SSD1848_DATA_OUTPUT_SCAN_DIR);
+ spi_write_data_array (g, temp, 3);
+
+ spi_write_cmd (g, SSD1848_SETSTARTLINE);
+ spi_write_data (g, 0x00);
+
+ spi_write_cmd (g, SSD1848_COM_OUTPUT_SCAN_DIR);
+ spi_write_data (g, 0x01);
+
+ spi_write_cmd (g, SSD1848_SETDISP_CTRL); /* 0xCA */
+ temp [0] = 0x00;
+ temp [1] = 0x20; /* 0x1F */
+ temp [2] = 0x00;
+ spi_write_data_array (g, temp, 3);
+
+
+ spi_write_cmd (g, SSD1848_SETPOWER_CTRL); /* 0x20 */
+ spi_write_data (g, 0x0F);
+
+ gfxSleepMilliseconds (150);
+
+ spi_write_cmd (g, SSD1848_SETCONTRAST); /* 0x81 */
+ spi_write_data2 (g, 0x28, 0x06);
+
+ spi_write_cmd (g, SSD1848_TEMP_COMPENSATION);
+ spi_write_data (g, 0x01);
+
+ spi_write_cmd (g, SSD1848_SET_BIASING_LOCK); /* 0xFB */
+ spi_write_data (g, 0x02);
+
+ spi_write_cmd (g, 0xF3);
+ temp [0] = 0xc4;
+ temp [1] = 0x15;
+ temp [2] = 0x00;
+ temp [3] = 0x80;
+ spi_write_data_array (g, temp, 4);
+
+ spi_write_cmd (g, SSD1848_SET_FRAME_FREQ_LINEINVE);
+ temp [0] = 0x40;
+ temp [1] = 0x04;
+ temp [2] = 0x10;
+ temp [3] = 0x01;
+ spi_write_data_array (g, temp, 4);
+
+ spi_write_cmd (g, SSD1848_DISPLAYON);
+
+ spi_write_cmd (g, SSD1848_DUAL_OPT_SET);
+ spi_write_data2 (g, 0x1F, 0x06);
+
+ release_bus (g);
+
+ /* Finish Init */
+ post_init_board (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_STREAM_WRITE
+LLDSPEC void gdisp_lld_write_start (GDisplay *g)
+{
+ acquire_bus (g);
+ set_viewport (g);
+
+ PRM(g)->curCol = PRM(g)->startCol = (uint8_t) (g->p.x / 8);
+ PRM(g)->endCol = (uint8_t) ((g->p.x + g->p.cx - 1) / 8);
+ PRM(g)->curXPtr = PRM(g)->startXPtr = (uint8_t) (g->p.x % 8);
+ PRM(g)->endXPtr = (uint8_t) ((g->p.x + g->p.cx - 1) % 8);
+ PRM(g)->curYPtr = g->p.y;
+}
+LLDSPEC void gdisp_lld_write_color (GDisplay *g)
+{
+ uint8_t temp;
+ uint8_t a;
+ uint16_t y = PRM(g)->curYPtr;
+ uint16_t c = PRM(g)->curCol;
+
+ temp = RAM (g)[y * 16 + c];
+ if (gdispColor2Native (g->p.color))
+ {
+ temp |= 0x80 >> PRM(g)->curXPtr;
+ }
+ else
+ {
+ temp &= ~(0x80 >> PRM(g)->curXPtr);
+ }
+ RAM (g)[y * 16 + c] = temp;
+
+ PRM(g)->curXPtr++;
+ if (PRM(g)->curXPtr == 8)
+ {
+ spi_write_data (g, temp);
+ if (PRM(g)->curCol == PRM(g)->endCol)
+ {
+ PRM(g)->curYPtr++;
+ PRM(g)->curCol = PRM(g)->startCol;
+ PRM(g)->curXPtr = PRM(g)->startXPtr;
+ }
+ else
+ {
+ PRM(g)->curCol++;
+ PRM(g)->curXPtr = 0;
+ }
+ }
+
+ /* If hit the boundary, flush the byte */
+ else if ((PRM(g)->curCol == PRM(g)->endCol) &&
+ (PRM(g)->curXPtr == PRM(g)->endXPtr + 1))
+ {
+ spi_write_data (g, temp);
+ PRM(g)->curXPtr = PRM(g)->startXPtr;
+ PRM(g)->curCol = PRM(g)->startCol;
+ PRM(g)->curYPtr++;
+ }
+}
+LLDSPEC void gdisp_lld_write_stop (GDisplay *g)
+{
+ release_bus (g);
+}
+#endif
+
+#if GDISP_HARDWARE_FLUSH
+LLDSPEC void gdisp_lld_flush (GDisplay *g)
+{
+ uint8_t * ram;
+ unsigned pages;
+
+ /* Don't flush if we don't need it. */
+ if (!(g->flags & GDISP_FLG_NEEDFLUSH))
+ return;
+ ram = RAM (g);
+ pages = GDISP_SCREEN_WIDTH / 8;
+
+ acquire_bus (g);
+ spi_write_cmd (g, SSD1848_SETSTARTLINE | 0);
+
+ while (pages--)
+ {
+ spi_write_data_array (g, ram, SSD1848_PAGE_WIDTH);
+ ram += SSD1848_PAGE_WIDTH;
+ }
+ release_bus (g);
+
+ g->flags &= ~GDISP_FLG_NEEDFLUSH;
+}
+#endif
+
+#if GDISP_HARDWARE_CLEARS
+LLDSPEC void gdisp_lld_clear (GDisplay *g)
+{
+ uint16_t area = GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT;
+
+ if (gdispColor2Native (g->p.color))
+ {
+ memset (RAM (g), 0xFF, GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
+ }
+ else
+ {
+ memset (RAM (g), 0, GDISP_SCREEN_WIDTH / 8 * GDISP_SCREEN_HEIGHT);
+ }
+
+ acquire_bus (g);
+ spi_write_cmd (g, SSD1848_HV_COLUMN_ADDRESS);
+ spi_write_data2 (g, 0, 15);
+ spi_write_cmd (g, SSD1848_HV_PAGE_ADDRESS);
+ spi_write_data2 (g, 0, 129);
+ spi_write_cmd (g, SSD1848_WRITE_DISP_DATA);
+
+ for (; area; area--)
+ {
+ spi_write_data (g, 0);
+ }
+ release_bus (g);
+}
+#endif
+
+#if GDISP_HARDWARE_FILLS
+LLDSPEC void gdisp_lld_fill_area (GDisplay *g)
+{
+ coord_t scol, ecol, sx, ex;
+ coord_t y, col, x;
+ uint16_t area = (uint16_t) g->p.cx * g->p.cy;
+ uint8_t temp;
+
+ col = scol = (uint8_t) (g->p.x / 8);
+ ecol = (uint8_t) ((g->p.x + g->p.cx - 1) / 8);
+ x = sx = (uint8_t) (g->p.x % 8);
+ ex = (uint8_t) ((g->p.x + g->p.cx - 1) % 8);
+ y = g->p.y;
+
+
+ acquire_bus (g);
+ set_viewport (g);
+ for (; area; area--)
+ {
+ temp = RAM (g)[y * 16 + col];
+ if (gdispColor2Native (g->p.color))
+ {
+ temp |= (0x80 >> x);
+ }
+ else
+ {
+ temp &= ~(0x80 >> x);
+ }
+ RAM (g)[y * 16 + col] = temp;
+
+ if (++x == 8)
+ {
+ spi_write_data (g, temp);
+ if (col == ecol)
+ {
+ y++;
+ col = scol;
+ x = sx;
+ }
+ else
+ {
+ col++;
+ x = 0;
+ }
+ }
+
+ /* If hit the boundary, flush the byte */
+ else if ((col == ecol) && (x == ex + 1))
+ {
+ spi_write_data (g, temp);
+ x = sx;
+ col = scol;
+ y++;
+ }
+ }
+ 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_WIDTH - 1 - g->p.y;
+ y = g->p.x;
+ break;
+ }
+ if (gdispColor2Native (g->p.color) != gdispColor2Native (Black))
+ RAM (g)[xyaddr (x, y)] |= xybit (y);
+ else
+ RAM (g)[xyaddr (x, y)] &= ~xybit(y);
+ g->flags |= GDISP_FLG_NEEDFLUSH;
+}
+#endif
+
+#if GDISP_HARDWARE_PIXELREAD
+LLDSPEC color_t gdisp_lld_get_pixel_color (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_WIDTH - 1 - g->p.y;
+ y = g->p.x;
+ break;
+ }
+ return (RAM (g)[xyaddr (x, y)] & xybit (y)) ? White : Black;
+}
+#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:
+ acquire_bus (g);
+ spi_write_cmd (g, SSD1848_SETCONTRAST);
+ spi_write_data2 (g, 0x00, 0x00); /* Drop the contrast & gain */
+ spi_write_cmd (g, SSD1848_DISPLAYOFF);
+ spi_write_cmd (g, SSD1848_ENTERSLEEP);
+ release_bus (g);
+ break;
+
+ case powerSleep:
+ case powerDeepSleep:
+ acquire_bus (g);
+ spi_write_cmd (g, SSD1848_ENTERSLEEP);
+ release_bus (g);
+ break;
+
+ case powerOn:
+ acquire_bus (g);
+ spi_write_cmd (g, SSD1848_EXITSLEEP); /* need this in case we were in 'normal' sleep mode */
+ gfxSleepMilliseconds (5);
+ spi_write_cmd (g, SSD1848_DISPLAYON);
+ 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);
+ spi_write_cmd (g, SSD1848_SETCONTRAST);
+ spi_write_data (g, (((uint16_t) g->p.ptr) << 8) / 101);
+ release_bus (g);
+ g->g.Contrast = (uint8_t) g->p.ptr;
+ return;
+
+ /* Our own special controller code to inverse the display */
+ /* 0 = normal, 1 = inverse */
+ case GDISP_CONTROL_INVERSE:
+ acquire_bus (g);
+ spi_write_cmd (g, g->p.ptr ? SSD1848_INVERTDISPLAY : SSD1848_NORMALDISPLAY);
+ release_bus (g);
+ return;
+ }
+}
+#endif /* GDISP_NEED_CONTROL */
+
+
+#if GDISP_HARDWARE_BITFILLS
+LLDSPEC void gdisp_lld_blit_area (GDisplay *g)
+{
+ coord_t scol, ecol, sx;
+ coord_t y, col;
+ uint16_t area;
+ uint8_t temp, temp2, i;
+
+ col = scol = (uint8_t) (g->p.x / 8);
+ ecol = (uint8_t) ((g->p.x + g->p.cx - 1) / 8);
+ sx = (uint8_t) (g->p.x % 8);
+ y = g->p.y;
+ area = (ecol - scol + 1) * (g->p.cy);
+
+
+ acquire_bus (g);
+ set_viewport (g);
+
+ /* Bitfill align with Column */
+ if (sx == 0)
+ {
+ for (; area; area--)
+ {
+ temp = RAM (g)[y * 16 + col] = *((uint8_t *) g->p.ptr)++;
+ spi_write_data (g, temp);
+ if (col == ecol)
+ {
+ y++;
+ col = scol;
+ }
+ else
+ {
+ col++;
+ }
+ }
+ }
+ else
+ {
+ /* Bitfil doesn't align with column */
+ for (; area; area--)
+ {
+ temp = RAM (g)[y * 16 + col];
+ if (col != ecol)
+ {
+ temp |= (*((uint8_t *) g->p.ptr) >> sx);
+ RAM (g)[y * 16 + col] = temp;
+
+ temp2 = RAM (g)[y * 16 + col + 1];
+ temp2 |= (*((uint8_t *) g->p.ptr) << (8-sx));
+ RAM (g)[y * 16 + col + 1] = temp2;
+ ((uint8_t *) g->p.ptr)++;
+ }
+
+ spi_write_data (g, temp);
+ if (col == ecol)
+ {
+ y++;
+ col = scol;
+ }
+ else
+ {
+ col++;
+ }
+ }
+ }
+ release_bus (g);
+}
+#endif
+
+#endif /* GFX_USE_GDISP */
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