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path: root/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c
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Diffstat (limited to 'keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c')
-rw-r--r--keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c292
1 files changed, 292 insertions, 0 deletions
diff --git a/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c b/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c
new file mode 100644
index 000000000..c33aea81a
--- /dev/null
+++ b/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c
@@ -0,0 +1,292 @@
+/*
+ * 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_ERGODOX
+#include "drivers/gdisp/st7565ergodox/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 32
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+ #define GDISP_SCREEN_WIDTH 128
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+ #define GDISP_INITIAL_CONTRAST 0
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+ #define GDISP_INITIAL_BACKLIGHT 100
+#endif
+
+#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
+
+#include "drivers/gdisp/st7565ergodox/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 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)
+#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;
+
+ // Initialise the board interface
+ init_board(g);
+
+ // Hardware reset
+ setpin_reset(g, TRUE);
+ gfxSleepMilliseconds(20);
+ setpin_reset(g, FALSE);
+ gfxSleepMilliseconds(20);
+
+ acquire_bus(g);
+ write_cmd(g, ST7565_DISPLAY_OFF);
+ write_cmd(g, ST7565_LCD_BIAS);
+ write_cmd(g, ST7565_ADC);
+ write_cmd(g, ST7565_COM_SCAN);
+
+ write_cmd(g, ST7565_START_LINE | 0);
+
+ write_cmd(g, ST7565_RESISTOR_RATIO | 0x6);
+
+ // turn on voltage converter (VC=1, VR=0, VF=0)
+ write_cmd(g, ST7565_POWER_CONTROL | 0x04);
+ delay_ms(50);
+
+ // turn on voltage regulator (VC=1, VR=1, VF=0)
+ write_cmd(g, ST7565_POWER_CONTROL | 0x06);
+ delay_ms(50);
+
+ // turn on voltage follower (VC=1, VR=1, VF=1)
+ write_cmd(g, ST7565_POWER_CONTROL | 0x07);
+ delay_ms(50);
+
+ write_cmd(g, 0xE2);
+ write_cmd(g, ST7565_COM_SCAN);
+ write_cmd2(g, ST7565_CONTRAST, GDISP_INITIAL_CONTRAST*64/101);
+ //write_cmd2(g, ST7565_CONTRAST, 0);
+ write_cmd(g, ST7565_DISPLAY_ON);
+ write_cmd(g, ST7565_ALLON_NORMAL);
+ write_cmd(g, ST7565_INVERT_DISPLAY);
+
+ write_cmd(g, ST7565_RMW);
+
+ // 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) {
+ unsigned p;
+
+ // Don't flush if we don't need it.
+ if (!(g->flags & GDISP_FLG_NEEDFLUSH))
+ return;
+
+ acquire_bus(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);
+ write_data(g, RAM(g) + (p*GDISP_SCREEN_WIDTH), GDISP_SCREEN_WIDTH);
+ }
+ unsigned line = (PRIV(g)->buffer2 ? 32 : 0);
+ write_cmd(g, ST7565_START_LINE | line);
+ 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
+
+#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, ST7565_DISPLAY_OFF);
+ release_bus(g);
+ break;
+ case powerOn:
+ acquire_bus(g);
+ write_cmd(g, ST7565_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);
+ write_cmd2(g, ST7565_CONTRAST, ((((unsigned)g->p.ptr)<<6)/101) & 0x3F);
+ release_bus(g);
+ g->g.Contrast = (unsigned)g->p.ptr;
+ return;
+ }
+ }
+#endif // GDISP_NEED_CONTROL
+
+#endif // GFX_USE_GDISP
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