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Fix a bug in Contrast handling in the Nokia drivers

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This commit is contained in:
inmarket 2013-10-21 17:11:46 +10:00
parent 0698fd28c0
commit 1b3297aeae
2 changed files with 4 additions and 4 deletions
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4
drivers/gdisp/Nokia6610GE12/gdisp_lld.c
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@ -115,7 +115,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
write_index(g, SLEEPOUT); // Sleep out
write_reg(g, COLMOD, 0x03); // Color Interface Pixel Format - 0x03 = 12 bits-per-pixel
write_reg(g, MADCTL, 0x00); // Memory access controller
write_reg(g, SETCON, 127*GDISP_INITIAL_CONTRAST/100-64); // Write contrast
write_reg(g, SETCON, 128*GDISP_INITIAL_CONTRAST/101-64); // Write contrast
delayms(20);
// Finish Init
@ -248,7 +248,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
case GDISP_CONTROL_CONTRAST:
if ((unsigned)g->p.ptr > 100) g->p.ptr = (void *)100;
acquire_bus(g);
write_reg(g, CONTRAST,(unsigned)127*g->p.ptr/100-64);
write_reg(g, CONTRAST,(unsigned)128*g->p.ptr/101-64);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
return;

4
drivers/gdisp/Nokia6610GE8/gdisp_lld.c
View file

@ -199,7 +199,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// P1: 0x00 = page address normal, column address normal, address scan in column direction
// P2: 0x00 = RGB sequence (default value)
// P3: 0x02 = 4 bits per colour (Type A)
write_cmd2(g, VOLCTR, 63*GDISP_INITIAL_CONTRAST/100, 0x03); // Voltage control (contrast setting)
write_cmd2(g, VOLCTR, 64*GDISP_INITIAL_CONTRAST/101, 0x03); // Voltage control (contrast setting)
// P1 = Contrast (0..63)
// P2 = 3 resistance ratio (only value that works)
delayms(100); // Allow power supply to stabilise
@ -543,7 +543,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
case GDISP_CONTROL_CONTRAST:
if ((unsigned)g->p.ptr > 100) g->p.ptr = (void *)100;
acquire_bus(g);
write_cmd2(g, VOLCTR, 63*(unsigned)g->p.ptr/100, 0x03);
write_cmd2(g, VOLCTR, 64*(unsigned)g->p.ptr/101, 0x03);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
return;