uGFX/ugfx
2
0
Fork 0
Code Issues 2 Pull requests Projects Releases Wiki Activity

Some changes to the SSD1963 driver to cater for new boards

Browse source
This commit is contained in:
inmarket 2015-02-23 18:16:33 +10:00
parent 9da63a2aaa
commit 53aba6de89
1 changed files with 39 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

56
drivers/gdisp/SSD1963/gdisp_lld_SSD1963.c
View file

@ -90,23 +90,23 @@ static inline void set_viewport(GDisplay* g) {
write_data16(g, g->p.y);
write_data16(g, g->p.y+g->p.cy-1);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, GDISP_SCREEN_HEIGHT-1 - (g->p.x+g->p.cx-1) );
write_data16(g, GDISP_SCREEN_HEIGHT-1 - (g->p.x));
write_data16(g, g->g.Width - g->p.x - g->p.cx);
write_data16(g, g->g.Width-1 - g->p.x);
write_index(g, SSD1963_WRITE_MEMORY_START);
break;
case GDISP_ROTATE_180:
write_index(g, SSD1963_SET_COLUMN_ADDRESS);
write_data16(g, GDISP_SCREEN_WIDTH-1 - (g->p.x+g->p.cx-1));
write_data16(g, GDISP_SCREEN_WIDTH-1 - (g->p.x));
write_data16(g, g->g.Width - g->p.x - g->p.cx);
write_data16(g, g->g.Width-1 - g->p.x);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, GDISP_SCREEN_HEIGHT-1 - (g->p.y+g->p.cy-1));
write_data16(g, GDISP_SCREEN_HEIGHT-1 - (g->p.y));
write_data16(g, g->g.Height - g->p.y - g->p.cy);
write_data16(g, g->g.Height-1 - g->p.y);
write_index(g, SSD1963_WRITE_MEMORY_START);
break;
case GDISP_ROTATE_270:
write_index(g, SSD1963_SET_COLUMN_ADDRESS);
write_data16(g, GDISP_SCREEN_WIDTH-1 - (g->p.y+g->p.cy-1));
write_data16(g, GDISP_SCREEN_WIDTH-1 - (g->p.y));
write_data16(g, g->g.Height - g->p.y - g->p.cy);
write_data16(g, g->g.Height-1 - g->p.y);
write_index(g, SSD1963_SET_PAGE_ADDRESS);
write_data16(g, g->p.x);
write_data16(g, g->p.x+g->p.cx-1);
@ -128,18 +128,29 @@ static inline void set_backlight(GDisplay *g, uint8_t percent) {
// connected to a LED connection on the breakout board
write_index(g, SSD1963_SET_PWM_CONF); //set PWM for BackLight
#if SSD1963_INIT_METHOD_2
write_data(g, 0x05);
// write_data(g, 0x0E); // PWMF[7:0] = 2, PWM base freq = PLL/(256*(1+5))/256 = 300Hz for a PLL freq = 120MHz (source: Displaytech)
write_data(g, 0xFF); // Dummy data (not needed DBC is in control)
#else
write_data(g, 0x01);
// write_data(g, 0x0E); // PWMF[7:0] = 2, PWM base freq = PLL/(256*(1+5))/256 = 300Hz for a PLL freq = 120MHz (source: Displaytech)
#endif
if (percent == 0xFF) // use percent==0xFF to turn off SSD1963 pwm in power SLEEP or DEEP SLEEP mode
write_data(g, 0x00);
else if (percent >= 100)
write_data(g, 0x00FF); // Fully on for any percentage >= 100
else
write_data(g, (percent*255)/100 & 0x00FF);
#if SSD1963_INIT_METHOD_2
write_data(g, 0x00); // DBC minimum brightness
write_data(g, 0x00); // Brightness prescaler - active when Transition Effect enable A5 = 1
#else
write_data(g, 0x01); // Controlled by host (not DBC), enabled
write_data(g, 0xFF); // DBC manual brightness (not used - zero would work)
write_data(g, 0x60); // DBC minimum brightness (not used - zero would work)
write_data(g, 0x0F); // Brightness prescaler - active when Transition Effect enable A5 = 1
#endif
}
/*===========================================================================*/
@ -166,9 +177,9 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
#if !GDISP_SSD1963_NO_INIT
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(20);
gfxSleepMilliseconds(100);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(20);
gfxSleepMilliseconds(200);
#endif
// Get the bus for the following initialisation commands
@ -176,19 +187,22 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
#if !GDISP_SSD1963_NO_INIT
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
gfxSleepMilliseconds(5);
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
gfxSleepMilliseconds(50);
/* Driver PLL config */
write_index(g, SSD1963_SET_PLL_MN);
write_data(g, 35); // PLLclk = REFclk (10Mhz) * 36 (360Mhz)
write_data(g, 2); // SYSclk = PLLclk / 3 (120MHz)
write_data(g, 4); // Apply calculation bit, else it is ignored
//#if SSD1963_INIT_METHOD_2
write_data(g, 54); // Apply calculation bit, else it is ignored
//#else
// write_data(g, 4); // Apply calculation bit, else it is ignored
//#endif
write_reg(g, SSD1963_SET_PLL, 0x01); // Enable PLL
gfxSleepMilliseconds(5);
gfxSleepMilliseconds(100);
write_reg(g, SSD1963_SET_PLL, 0x03); // Use PLL
gfxSleepMilliseconds(5);
write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
gfxSleepMilliseconds(5);
/* LCD panel parameters */
write_index(g, SSD1963_SET_GDISP_MODE);
@ -228,10 +242,14 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
write_data(g, lcdp->vpulse);
write_data(g, 0x00);
write_data(g, 0x00);
/* Enable DBC to control Backlight */
write_index(g, SSD1963_SET_DBC_CONF);
write_data(g, 0x2F);
#endif
/* Tear effect indicator ON. This is used to tell the host MCU when the driver is not refreshing the panel (during front/back porch) */
write_reg(g, SSD1963_SET_TEAR_ON, 0x00);
//write_reg(g, SSD1963_SET_TEAR_ON, 0x00);
/* Turn on */
write_index(g, SSD1963_SET_DISPLAY_ON);
@ -285,8 +303,10 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
break;
case powerOn:
acquire_bus(g);
setreadmode(g);
dummy_read(g);
dummy_read(g);
setwritemode(g);
gfxSleepMilliseconds(100); // Wait for 1msec to let the PLL stable if was stopped by deep sleep mode
write_index(g, SSD1963_EXIT_SLEEP_MODE); // need this in case we were in 'normal' sleep mode
@ -359,7 +379,9 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
case GDISP_CONTROL_BACKLIGHT:
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
acquire_bus(g);
set_backlight(g, (unsigned)g->p.ptr);
release_bus(g);
g->g.Backlight = (unsigned)g->p.ptr;
return;