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gryphon-led-module: modify transmission routine according to SK9822 spec

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This commit is contained in:
Oussama Ghorbel 2019-04-08 16:38:46 +02:00
parent 8f0df36664
commit ab558792a0
1 changed files with 12 additions and 16 deletions
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28
gryphon-led-module/src/sk9822.c
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@ -56,31 +56,27 @@ int sk9822_set_color_str(struct sk9822_leds *sk9822, const char *hex)
int sk9822_update(struct sk9822_leds *sk9822)
{
uint16_t i;
uint8_t *rawarray = (uint8_t *)sk9822->led_colors;
uint16_t led_count = sk9822->led_count;
sk9822_bb_write(sk9822, 0x00); // Start Frame
// Start Frame
sk9822_bb_write(sk9822, 0x00);
sk9822_bb_write(sk9822, 0x00);
sk9822_bb_write(sk9822, 0x00);
sk9822_bb_write(sk9822, 0x00);
for (i = 0; i < (led_count*3); i += 3) {
for (i = 0; i < led_count; i++) {
cRGB *p = &sk9822->led_colors[i];
sk9822_bb_write(sk9822, 0xe0+sk9822->led_brightness); // Maximum global brightness
sk9822_bb_write(sk9822, rawarray[i+0]);
sk9822_bb_write(sk9822, rawarray[i+1]);
sk9822_bb_write(sk9822, rawarray[i+2]);
sk9822_bb_write(sk9822, p->b);
sk9822_bb_write(sk9822, p->g);
sk9822_bb_write(sk9822, p->r);
}
// Reset frame - Only needed for SK9822, has no effect on APA102
sk9822_bb_write(sk9822, 0x00);
sk9822_bb_write(sk9822, 0x00);
sk9822_bb_write(sk9822, 0x00);
sk9822_bb_write(sk9822, 0x00);
// End frame: 8+8*(leds >> 4) clock cycles
for (i = 0; i < led_count; i += 16) {
sk9822_bb_write(sk9822, 0xff); // 8 more clock cycles
}
// End frame
sk9822_bb_write(sk9822, 0xff);
sk9822_bb_write(sk9822, 0xff);
sk9822_bb_write(sk9822, 0xff);
sk9822_bb_write(sk9822, 0xff);
return 0;
}