aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gdisp/SSD1351/gdisp_lld_SSD1351.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gdisp/SSD1351/gdisp_lld_SSD1351.c')
-rw-r--r--drivers/gdisp/SSD1351/gdisp_lld_SSD1351.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/drivers/gdisp/SSD1351/gdisp_lld_SSD1351.c b/drivers/gdisp/SSD1351/gdisp_lld_SSD1351.c
new file mode 100644
index 00000000..35f059cb
--- /dev/null
+++ b/drivers/gdisp/SSD1351/gdisp_lld_SSD1351.c
@@ -0,0 +1,264 @@
+/*
+ * 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
+
+#if defined(GDISP_SCREEN_HEIGHT)
+ #warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
+ #undef GISP_SCREEN_HEIGHT
+#endif
+#if defined(GDISP_SCREEN_WIDTH)
+ #warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
+ #undef GDISP_SCREEN_WIDTH
+#endif
+
+#define GDISP_DRIVER_VMT GDISPVMT_SSD1351
+#include "gdisp_lld_config.h"
+#include "src/gdisp/gdisp_driver.h"
+
+#include "board_SSD1351.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#ifndef GDISP_SCREEN_HEIGHT
+ #define GDISP_SCREEN_HEIGHT 128
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+ #define GDISP_SCREEN_WIDTH 128
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+ #define GDISP_INITIAL_CONTRAST 100
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+ #define GDISP_INITIAL_BACKLIGHT 100
+#endif
+
+#include "SSD1351.h"
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+// Some common routines and macros
+#define dummy_read(g) { volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
+#define write_reg(g, reg, data) { write_cmd(g, reg); write_data(g, data); }
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
+ // No private area for this controller
+ g->priv = 0;
+
+ // Initialise the board interface
+ init_board(g);
+
+ // Hardware reset
+ setpin_reset(g, TRUE);
+ gfxSleepMilliseconds(20);
+ setpin_reset(g, FALSE);
+ gfxSleepMilliseconds(20);
+
+ // Get the bus for the following initialisation commands
+ acquire_bus(g);
+
+ write_reg(g, 0xFD, 0x12); // unlock OLED driver IC
+ write_reg(g, 0xFD, 0xB1); // make commands A1, B1, B3, BB, BE, C1 accesible in unlocked state
+ write_cmd(g, 0xAE); // sleep mode ON (display off)
+ write_reg(g, 0xB3, 0xF1); // Front clock divider / osc freq - Osc = 0xF; div = 2
+ write_reg(g, 0xCA, 127); // set MUX ratio
+ write_reg(g, 0xA0, 0b01110100); // Set re-map / color depth
+ // [0] : address increment (0: horizontal, 1: vertical, reset 0)
+ // [1] : column remap (0: 0..127, 1: 127..0, reset 0)
+ // [2] : color remap (0: A->B->C, 1: C->B->A, reset 0)
+ // [3] : reserved
+ // [4] : column scan direction (0: top->down, 1: bottom->up, reset 0)
+ // [5] : odd/even split COM (0: disable, 1: enable, reset 1)
+ // [6..7] : color depth (00,01: 65k, 10: 262k, 11: 262k format 2)
+
+ write_cmd(g, 0x15); // Set Column address
+ write_data(g, 0x00); // start
+ write_data(g, 0x7F); // end
+
+ write_cmd(g, 0x75); // set row address
+ write_data(g, 0x00); // start
+ write_data(g, 0x7F); // end
+
+ write_reg(g, 0xA1, 0x00); // set display start line - 0
+ write_reg(g, 0xA2, 0x00); // set display offset - 0
+ write_reg(g, 0xB5, 0x00); // set GPIO - both HiZ, input disabled
+ write_reg(g, 0xAB, 0x01); // enable internal VDD regulator
+ write_reg(g, 0xB1, 0x32); // set reset / pre-charge period - phase 2: 3 DCLKs, phase 1: 5 DCLKs
+ write_reg(g, 0xBE, 0x05); // set VComH voltage - 0.82*Vcc
+ write_reg(g, 0xBB, 0x17); // set pre-charge voltage - 0.6*Vcc
+ write_cmd(g, 0xA6); // set display mode: reset to normal display
+
+ write_cmd(g, 0xC1); // set contrast current for A,B,C
+ write_data(g, 0xC8);
+ write_data(g, 0x80);
+ write_data(g, 0xC8);
+
+ write_reg(g, 0xC7, 0x0F); // master contrast current control - no change
+
+ write_cmd(g, 0xB4); // set segment low voltage
+ write_data(g, 0xA0); // external VSL
+ write_data(g, 0xB5); // hard value
+ write_data(g, 0x55); // hard value
+
+ write_reg(g, 0xB6, 0x01); // set second pre-charge period - 1 DCLKs
+ write_cmd(g, 0xAF); // sleep mode OFF (display on)
+ write_cmd(g, 0x5C); // write to RAM
+
+ release_bus(g);
+
+ // Finish Init
+ post_init_board(g);
+
+ // Release the bus
+ release_bus(g);
+
+ /* Turn on the back-light */
+ set_backlight(g, GDISP_INITIAL_BACKLIGHT);
+
+ /* 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);
+ write_cmd(g, SSD1351_SET_COLUMN_ADDRESS);
+ write_data(g, g->p.x);
+ write_data(g, g->p.x + g->p.cx - 1);
+ write_cmd(g, SSD1351_SET_ROW_ADDRESS);
+ write_data(g, g->p.y);
+ write_data(g, g->p.y + g->p.cy - 1);
+ write_cmd(g, SSD1351_WRITE_RAM);
+ }
+ LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
+ LLDCOLOR_TYPE c;
+
+ c = gdispColor2Native(g->p.color);
+ write_data(g, c >> 8);
+ write_data(g, c & 0xFF);
+ }
+ LLDSPEC void gdisp_lld_write_stop(GDisplay *g) {
+ release_bus(g);
+ }
+#endif
+
+#if GDISP_HARDWARE_STREAM_READ
+ #error "SSD1351 - Stream Read is not supported yet"
+ LLDSPEC void gdisp_lld_read_start(GDisplay *g) {
+ acquire_bus(g);
+ //set_viewport(g);
+ //write_index(g, 0x2E);
+ setreadmode(g);
+ //dummy_read(g);
+ }
+ LLDSPEC color_t gdisp_lld_read_color(GDisplay *g) {
+ uint16_t data;
+
+ data = read_data(g);
+ return gdispNative2Color(data);
+ }
+ LLDSPEC void gdisp_lld_read_stop(GDisplay *g) {
+ setwritemode(g);
+ release_bus(g);
+ }
+#endif
+
+#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
+ #error "SSD1351 - Hardware control is not supported yet"
+ 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);
+ //TODO
+ release_bus(g);
+ break;
+ case powerOn:
+ acquire_bus(g);
+ //TODO
+ 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) {
+ case GDISP_ROTATE_0:
+ acquire_bus(g);
+ //TODO
+ release_bus(g);
+ g->g.Height = GDISP_SCREEN_HEIGHT;
+ g->g.Width = GDISP_SCREEN_WIDTH;
+ break;
+ case GDISP_ROTATE_90:
+ acquire_bus(g);
+ //TODO
+ release_bus(g);
+ g->g.Height = GDISP_SCREEN_WIDTH;
+ g->g.Width = GDISP_SCREEN_HEIGHT;
+ break;
+ case GDISP_ROTATE_180:
+ acquire_bus(g);
+ //TODO
+ release_bus(g);
+ g->g.Height = GDISP_SCREEN_HEIGHT;
+ g->g.Width = GDISP_SCREEN_WIDTH;
+ break;
+ case GDISP_ROTATE_270:
+ acquire_bus(g);
+ //TODO
+ release_bus(g);
+ 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_BACKLIGHT:
+ if ((unsigned)g->p.ptr > 100)
+ g->p.ptr = (void *)100;
+ set_backlight(g, (unsigned)g->p.ptr);
+ g->g.Backlight = (unsigned)g->p.ptr;
+ return;
+
+ //case GDISP_CONTROL_CONTRAST:
+ default:
+ return;
+ }
+ }
+#endif
+
+#endif /* GFX_USE_GDISP */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 20:08:32 +0000