asaril/esp32_clock
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improve timing

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This commit is contained in:
Patrick Moessler 2024-01-28 22:59:40 +01:00
parent 208ee058fc
commit d8557e9cb1
1 changed files with 2 additions and 1 deletions
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components/qspi_74hc595_4x_display/qspi_74hc595_4x_display.cpp
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@ -154,11 +154,12 @@ void QSPI_74HC595_4X_DISPLAYComponent::display()
const uint8_t *buf_ptr = reinterpret_cast<const uint8_t *>(this->buffer_); const uint8_t *buf_ptr = reinterpret_cast<const uint8_t *>(this->buffer_);
for (uint8_t i = 0; i < 8; i++) for (uint8_t i = 0; i < 8; i++)
{ {
uint32_t start = micros();
this->enable(); this->enable();
this->write_cmd_addr_data(0, 0, 0, 0, buf_ptr, 8, 4); this->write_cmd_addr_data(0, 0, 0, 0, buf_ptr, 8, 4);
buf_ptr += 8; buf_ptr += 8;
this->disable(); this->disable();
delay_microseconds_safe(delay); delay_microseconds_safe(delay - (micros() - start));
} }
// zero out everything to have a somewhat uniform duty cycle for all digits // zero out everything to have a somewhat uniform duty cycle for all digits
this->enable(); this->enable();