If you recall my earlier post on the code for handling WS2812B LEDs with an ESP-12 or similar – I’ve been discovering the odd flicker on the first LED – recall I lengthened the reset pulse to get rid of this – well, I was still getting it very occasionally during a long fade of the lights. I’ve lengthened the reset pulse and it has now completely gone (see code in bold). Enjoy.
void ICACHE_FLASH_ATTR WS2812OutBuffer(uint8_t * buffer, uint16_t length, uint16_t repetition) {
uint16_t i;
os_intr_lock();
for (i = 0; i < 4; i++)
WRITE_PERI_REG(PERIPHS_GPIO_BASEADDR + 8, rainb12);
while (repetition--) {
for (i = 0; i < length; i++) {
uint8_t mask = 0x80;
uint8_t byte = buffer[i];
while (mask) {
(byte & mask) ? SEND_WS_12_1() : SEND_WS_12_0();
mask >>= 1;
}
}
}
os_intr_unlock();
}
