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path: root/drivers/ugfx/gdisp/st7565/gdisp_lld_ST7565.c
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Diffstat (limited to 'drivers/ugfx/gdisp/st7565/gdisp_lld_ST7565.c')
-rw-r--r--drivers/ugfx/gdisp/st7565/gdisp_lld_ST7565.c329
1 files changed, 329 insertions, 0 deletions
diff --git a/drivers/ugfx/gdisp/st7565/gdisp_lld_ST7565.c b/drivers/ugfx/gdisp/st7565/gdisp_lld_ST7565.c
new file mode 100644
index 0000000000..c38194b069
--- /dev/null
+++ b/drivers/ugfx/gdisp/st7565/gdisp_lld_ST7565.c
@@ -0,0 +1,329 @@
+/*
+ * 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_ST7565_QMK
+#include "gdisp_lld_config.h"
+#include "src/gdisp/gdisp_driver.h"
+
+#include "board_st7565.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#ifndef GDISP_SCREEN_HEIGHT
+#define GDISP_SCREEN_HEIGHT LCD_HEIGHT
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+#define GDISP_SCREEN_WIDTH LCD_WIDTH
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+#define GDISP_INITIAL_CONTRAST 35
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+#define GDISP_INITIAL_BACKLIGHT 100
+#endif
+
+#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
+
+#include "st7565.h"
+
+/*===========================================================================*/
+/* Driver config defaults for backward compatibility. */
+/*===========================================================================*/
+#ifndef ST7565_LCD_BIAS
+#define ST7565_LCD_BIAS ST7565_LCD_BIAS_7
+#endif
+#ifndef ST7565_ADC
+#define ST7565_ADC ST7565_ADC_NORMAL
+#endif
+#ifndef ST7565_COM_SCAN
+#define ST7565_COM_SCAN ST7565_COM_SCAN_INC
+#endif
+#ifndef ST7565_PAGE_ORDER
+#define ST7565_PAGE_ORDER 0,1,2,3
+#endif
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+typedef struct{
+ bool_t buffer2;
+ uint8_t data_pos;
+ uint8_t data[16];
+ uint8_t ram[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH / 8];
+}PrivData;
+
+// Some common routines and macros
+#define PRIV(g) ((PrivData*)g->priv)
+#define RAM(g) (PRIV(g)->ram)
+
+static GFXINLINE void write_cmd(GDisplay* g, uint8_t cmd) {
+ PRIV(g)->data[PRIV(g)->data_pos++] = cmd;
+}
+
+static GFXINLINE void flush_cmd(GDisplay* g) {
+ write_data(g, PRIV(g)->data, PRIV(g)->data_pos);
+ PRIV(g)->data_pos = 0;
+}
+
+#define write_cmd2(g, cmd1, cmd2) { write_cmd(g, cmd1); write_cmd(g, cmd2); }
+#define write_cmd3(g, cmd1, cmd2, cmd3) { write_cmd(g, cmd1); write_cmd(g, cmd2); write_cmd(g, cmd3); }
+
+// Some common routines and macros
+#define delay(us) gfxSleepMicroseconds(us)
+#define delay_ms(ms) gfxSleepMilliseconds(ms)
+
+#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.
+ * 64 * 128 / 8 = 1024 bytes.
+ */
+
+LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
+ // The private area is the display surface.
+ g->priv = gfxAlloc(sizeof(PrivData));
+ PRIV(g)->buffer2 = false;
+ PRIV(g)->data_pos = 0;
+
+ // Initialise the board interface
+ init_board(g);
+
+ // Hardware reset
+ setpin_reset(g, TRUE);
+ gfxSleepMilliseconds(20);
+ setpin_reset(g, FALSE);
+ gfxSleepMilliseconds(20);
+ acquire_bus(g);
+ enter_cmd_mode(g);
+
+ write_cmd(g, ST7565_RESET);
+ write_cmd(g, ST7565_LCD_BIAS);
+ write_cmd(g, ST7565_ADC);
+ write_cmd(g, ST7565_COM_SCAN);
+
+ write_cmd(g, ST7565_RESISTOR_RATIO | 0x1);
+ write_cmd2(g, ST7565_CONTRAST, GDISP_INITIAL_CONTRAST);
+
+ // turn on internal power supply (VC=1, VR=1, VF=1)
+ write_cmd(g, ST7565_POWER_CONTROL | 0x07);
+
+ write_cmd(g, ST7565_INVERT_DISPLAY);
+ write_cmd(g, ST7565_ALLON_NORMAL);
+
+ write_cmd(g, ST7565_START_LINE | 0);
+ write_cmd(g, ST7565_RMW);
+ flush_cmd(g);
+
+ // 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 = powerOff;
+ 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) {
+ unsigned p;
+
+ // Don't flush if we don't need it.
+ if (!(g->flags & GDISP_FLG_NEEDFLUSH))
+ return;
+
+ acquire_bus(g);
+ enter_cmd_mode(g);
+ unsigned dstOffset = (PRIV(g)->buffer2 ? 4 : 0);
+ for (p = 0; p < 4; p++) {
+ write_cmd(g, ST7565_PAGE | (p + dstOffset));
+ write_cmd(g, ST7565_COLUMN_MSB | 0);
+ write_cmd(g, ST7565_COLUMN_LSB | 0);
+ write_cmd(g, ST7565_RMW);
+ flush_cmd(g);
+ enter_data_mode(g);
+ write_data(g, RAM(g) + (p*GDISP_SCREEN_WIDTH), GDISP_SCREEN_WIDTH);
+ enter_cmd_mode(g);
+ }
+ unsigned line = (PRIV(g)->buffer2 ? 32 : 0);
+ write_cmd(g, ST7565_START_LINE | line);
+ flush_cmd(g);
+ PRIV(g)->buffer2 = !PRIV(g)->buffer2;
+ release_bus(g);
+
+ g->flags &= ~GDISP_FLG_NEEDFLUSH;
+}
+#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_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_HEIGHT-1 - g->p.y;
+ y = g->p.x;
+ break;
+ }
+ return (RAM(g)[xyaddr(x, y)] & xybit(y)) ? White : Black;
+}
+#endif
+
+LLDSPEC void gdisp_lld_blit_area(GDisplay *g) {
+ uint8_t* buffer = (uint8_t*)g->p.ptr;
+ int linelength = g->p.cx;
+ for (int i = 0; i < g->p.cy; i++) {
+ unsigned dstx = g->p.x;
+ unsigned dsty = g->p.y + i;
+ unsigned srcx = g->p.x1;
+ unsigned srcy = g->p.y1 + i;
+ unsigned srcbit = srcy * g->p.x2 + srcx;
+ for(int j=0; j < linelength; j++) {
+ uint8_t src = buffer[srcbit / 8];
+ uint8_t bit = 7-(srcbit % 8);
+ uint8_t bitset = (src >> bit) & 1;
+ uint8_t* dst = &(RAM(g)[xyaddr(dstx, dsty)]);
+ if (bitset) {
+ *dst |= xybit(dsty);
+ }
+ else {
+ *dst &= ~xybit(dsty);
+ }
+ dstx++;
+ srcbit++;
+ }
+ }
+ g->flags |= GDISP_FLG_NEEDFLUSH;
+}
+
+#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);
+ enter_cmd_mode(g);
+ write_cmd(g, ST7565_DISPLAY_OFF);
+ flush_cmd(g);
+ release_bus(g);
+ break;
+ case powerOn:
+ acquire_bus(g);
+ enter_cmd_mode(g);
+ write_cmd(g, ST7565_DISPLAY_ON);
+ flush_cmd(g);
+ 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:
+ g->g.Contrast = (unsigned)g->p.ptr & 63;
+ acquire_bus(g);
+ enter_cmd_mode(g);
+ write_cmd2(g, ST7565_CONTRAST, g->g.Contrast);
+ flush_cmd(g);
+ release_bus(g);
+ return;
+ }
+}
+#endif // GDISP_NEED_CONTROL
+
+#endif // GFX_USE_GDISP
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