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Recode another delay in an esp32 specific fashion that should be faster

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This commit is contained in:
Brian Bulkowski
2020-09-21 19:12:15 -07:00
parent 22c7ada86f
commit 1565347f6f
1 changed files with 3 additions and 9 deletions
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12
components/FastLED-idf/hal/esp32-hal-misc.c
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@ -153,17 +153,11 @@ void delay(uint32_t ms)
void IRAM_ATTR delayMicroseconds(uint32_t us) void IRAM_ATTR delayMicroseconds(uint32_t us)
{ {
uint32_t m = micros(); uint64_t now = esp_timer_get_time();
if(us){ if(us){
uint32_t e = (m + us); do {
if(m > e){ //overflow
while(micros() > e){
NOP(); NOP();
} } while ((esp_timer_get_time() - now) < us);
}
while(micros() < e){
NOP();
}
} }
} }