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Fix the LiberTiny bug with UART pin setup (#11518)

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This commit is contained in:
Anton Sergunov
2025-10-29 07:33:16 +06:00
committed by GitHub
parent 99f48ae51c
commit 0d805355f5
1 changed files with 28 additions and 10 deletions
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38
esphome/components/uart/uart_component_libretiny.cpp
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@@ -46,40 +46,58 @@ uint16_t LibreTinyUARTComponent::get_config() {
}
void LibreTinyUARTComponent::setup() {
if (this->rx_pin_) {
this->rx_pin_->setup();
}
if (this->tx_pin_ && this->rx_pin_ != this->tx_pin_) {
this->tx_pin_->setup();
}
int8_t tx_pin = tx_pin_ == nullptr ? -1 : tx_pin_->get_pin();
int8_t rx_pin = rx_pin_ == nullptr ? -1 : rx_pin_->get_pin();
bool tx_inverted = tx_pin_ != nullptr && tx_pin_->is_inverted();
bool rx_inverted = rx_pin_ != nullptr && rx_pin_->is_inverted();
auto shouldFallbackToSoftwareSerial = [&]() -> bool {
auto hasFlags = [](InternalGPIOPin *pin, const gpio::Flags mask) -> bool {
return pin && pin->get_flags() & mask != gpio::Flags::FLAG_NONE;
};
if (hasFlags(this->tx_pin_, gpio::Flags::FLAG_OPEN_DRAIN | gpio::Flags::FLAG_PULLUP | gpio::Flags::FLAG_PULLDOWN) ||
hasFlags(this->rx_pin_, gpio::Flags::FLAG_OPEN_DRAIN | gpio::Flags::FLAG_PULLUP | gpio::Flags::FLAG_PULLDOWN)) {
#if LT_ARD_HAS_SOFTSERIAL
ESP_LOGI(TAG, "Pins has flags set. Using Software Serial");
return true;
#else
ESP_LOGW(TAG, "Pin flags are set but not supported for hardware serial. Ignoring");
#endif
}
return false;
};
if (false)
return;
#if LT_HW_UART0
else if ((tx_pin == -1 || tx_pin == PIN_SERIAL0_TX) && (rx_pin == -1 || rx_pin == PIN_SERIAL0_RX)) {
else if ((tx_pin == -1 || tx_pin == PIN_SERIAL0_TX) && (rx_pin == -1 || rx_pin == PIN_SERIAL0_RX) &&
!shouldFallbackToSoftwareSerial()) {
this->serial_ = &Serial0;
this->hardware_idx_ = 0;
}
#endif
#if LT_HW_UART1
else if ((tx_pin == -1 || tx_pin == PIN_SERIAL1_TX) && (rx_pin == -1 || rx_pin == PIN_SERIAL1_RX)) {
else if ((tx_pin == -1 || tx_pin == PIN_SERIAL1_TX) && (rx_pin == -1 || rx_pin == PIN_SERIAL1_RX) &&
!shouldFallbackToSoftwareSerial()) {
this->serial_ = &Serial1;
this->hardware_idx_ = 1;
}
#endif
#if LT_HW_UART2
else if ((tx_pin == -1 || tx_pin == PIN_SERIAL2_TX) && (rx_pin == -1 || rx_pin == PIN_SERIAL2_RX)) {
else if ((tx_pin == -1 || tx_pin == PIN_SERIAL2_TX) && (rx_pin == -1 || rx_pin == PIN_SERIAL2_RX) &&
!shouldFallbackToSoftwareSerial()) {
this->serial_ = &Serial2;
this->hardware_idx_ = 2;
}
#endif
else {
#if LT_ARD_HAS_SOFTSERIAL
if (this->rx_pin_) {
this->rx_pin_->setup();
}
if (this->tx_pin_ && this->rx_pin_ != this->tx_pin_) {
this->tx_pin_->setup();
}
this->serial_ = new SoftwareSerial(rx_pin, tx_pin, rx_inverted || tx_inverted);
#else
this->serial_ = &Serial;