diff options
| -rw-r--r-- | ports/esp32/espneopixel.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/ports/esp32/espneopixel.c b/ports/esp32/espneopixel.c index 1736e2a46..bcdf38873 100644 --- a/ports/esp32/espneopixel.c +++ b/ports/esp32/espneopixel.c @@ -20,18 +20,18 @@ void IRAM_ATTR esp_neopixel_write(uint8_t pin, uint8_t *pixels, uint32_t numByte mask = 0x80; startTime = 0; - uint32_t fcpu = ets_get_cpu_frequency() * 1000000; + uint32_t fcpu = ets_get_cpu_frequency(); if (timing == 1) { // 800 KHz - time0 = (fcpu * 0.35) / 1000000; // 0.35us - time1 = (fcpu * 0.8) / 1000000; // 0.8us - period = (fcpu * 1.25) / 1000000; // 1.25us per bit + time0 = (fcpu * 350) / 1000; // 0.35us + time1 = (fcpu * 800) / 1000; // 0.8us + period = (fcpu * 1250) / 1000; // 1.25us per bit } else { // 400 KHz - time0 = (fcpu * 0.5) / 1000000; // 0.35us - time1 = (fcpu * 1.2) / 1000000; // 0.8us - period = (fcpu * 2.5) / 1000000; // 1.25us per bit + time0 = (fcpu * 500) / 1000; // 0.5us + time1 = (fcpu * 1200) / 1000; // 1.2us + period = (fcpu * 2500) / 1000; // 2.5us per bit } uint32_t irq_state = mp_hal_quiet_timing_enter(); |