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LCD initialization sequence according to the docs 

The LCD initialization show now be much better and faster with no
flickering at the startup.

Also fix the contrast control.
master
Fred Sundvik 2017-04-07 10:55:29 +03:00
parent 3994fb1e79
commit 995002fa91
2 changed files with 13 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c
View File

@ -26,7 +26,7 @@
#define GDISP_SCREEN_WIDTH 128
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 0
#define GDISP_INITIAL_CONTRAST 35
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
@ -111,41 +111,25 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
gfxSleepMilliseconds(20);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(20);
acquire_bus(g);
enter_cmd_mode(g);
write_cmd(g, ST7565_DISPLAY_OFF);
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_START_LINE | 0);
write_cmd(g, ST7565_RESISTOR_RATIO | 0x1);
write_cmd2(g, ST7565_CONTRAST, GDISP_INITIAL_CONTRAST);
write_cmd(g, ST7565_RESISTOR_RATIO | 0x6);
// turn on voltage converter (VC=1, VR=0, VF=0)
write_cmd(g, ST7565_POWER_CONTROL | 0x04);
flush_cmd(g);
delay_ms(50);
// turn on voltage regulator (VC=1, VR=1, VF=0)
write_cmd(g, ST7565_POWER_CONTROL | 0x06);
flush_cmd(g);
delay_ms(50);
// turn on voltage follower (VC=1, VR=1, VF=1)
// turn on internal power supply (VC=1, VR=1, VF=1)
write_cmd(g, ST7565_POWER_CONTROL | 0x07);
flush_cmd(g);
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_ALLON_NORMAL);
write_cmd(g, ST7565_DISPLAY_ON);
write_cmd(g, ST7565_START_LINE | 0);
write_cmd(g, ST7565_RMW);
flush_cmd(g);
@ -331,14 +315,12 @@ LLDSPEC void gdisp_lld_control(GDisplay *g) {
return;
case GDISP_CONTROL_CONTRAST:
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
g->g.Contrast = (unsigned)g->p.ptr & 63;
acquire_bus(g);
enter_cmd_mode(g);
write_cmd2(g, ST7565_CONTRAST, ((((unsigned)g->p.ptr)<<6)/101) & 0x3F);
write_cmd2(g, ST7565_CONTRAST, g->g.Contrast);
flush_cmd(g);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
return;
}
}

2
keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/st7565.h
View File

@ -34,4 +34,6 @@
#define ST7565_RESISTOR_RATIO 0x20
#define ST7565_POWER_CONTROL 0x28
#define ST7565_RESET 0xE2
#endif /* _ST7565_H */