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[core] Move delay_microseconds_safe to iram (#7957)

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Co-authored-by: Jonathan Swoboda <jonathan.swoboda>
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Jonathan Swoboda
2024-12-16 07:57:06 +13:00
committed by Jesse Hills
co-authored by Jonathan Swoboda <jonathan.swoboda>
parent 0fbe6c0d8b
commit af23357dca
1 changed files with 2 additions and 1 deletions
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esphome/core/helpers.cpp
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@@ -767,7 +767,8 @@ bool mac_address_is_valid(const uint8_t *mac) {
return !(is_all_zeros || is_all_ones);
}
void delay_microseconds_safe(uint32_t us) { // avoids CPU locks that could trigger WDT or affect WiFi/BT stability
void IRAM_ATTR HOT delay_microseconds_safe(uint32_t us) {
// avoids CPU locks that could trigger WDT or affect WiFi/BT stability
uint32_t start = micros();
const uint32_t lag = 5000; // microseconds, specifies the maximum time for a CPU busy-loop.