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Extend uart: with rx_buffer_size: (#1006)

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* Extend `uart:` with `rx_buffer_size:`

This allows to configure `rx_buffer_size:`
to efficiently receive big payloads over UART

* lint

* remove old default value

* add test

Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>
This commit is contained in:
Kamil Trzciński
2020-06-10 02:22:06 +02:00
committed by GitHub
parent 64bd33a94e
commit cd7af19e7c
6 changed files with 20 additions and 5 deletions
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esphome/components/uart/uart_esp8266.cpp
+8 -2
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@@ -52,18 +52,22 @@ void UARTComponent::setup() {
if (this->tx_pin_.value_or(1) == 1 && this->rx_pin_.value_or(3) == 3) {
this->hw_serial_ = &Serial;
this->hw_serial_->begin(this->baud_rate_, config);
this->hw_serial_->setRxBufferSize(this->rx_buffer_size_);
} else if (this->tx_pin_.value_or(15) == 15 && this->rx_pin_.value_or(13) == 13) {
this->hw_serial_ = &Serial;
this->hw_serial_->begin(this->baud_rate_, config);
this->hw_serial_->setRxBufferSize(this->rx_buffer_size_);
this->hw_serial_->swap();
} else if (this->tx_pin_.value_or(2) == 2 && this->rx_pin_.value_or(8) == 8) {
this->hw_serial_ = &Serial1;
this->hw_serial_->begin(this->baud_rate_, config);
this->hw_serial_->setRxBufferSize(this->rx_buffer_size_);
} else {
this->sw_serial_ = new ESP8266SoftwareSerial();
int8_t tx = this->tx_pin_.has_value() ? *this->tx_pin_ : -1;
int8_t rx = this->rx_pin_.has_value() ? *this->rx_pin_ : -1;
this->sw_serial_->setup(tx, rx, this->baud_rate_, this->stop_bits_, this->nr_bits_, this->parity_);
this->sw_serial_->setup(tx, rx, this->baud_rate_, this->stop_bits_, this->nr_bits_, this->parity_,
this->rx_buffer_size_);
}
}
@@ -74,6 +78,7 @@ void UARTComponent::dump_config() {
}
if (this->rx_pin_.has_value()) {
ESP_LOGCONFIG(TAG, " RX Pin: GPIO%d", *this->rx_pin_);
ESP_LOGCONFIG(TAG, " RX Buffer Size: %u", this->rx_buffer_size_); // NOLINT
}
ESP_LOGCONFIG(TAG, " Baud Rate: %u baud", this->baud_rate_);
ESP_LOGCONFIG(TAG, " Bits: %u", this->nr_bits_);
@@ -210,8 +215,9 @@ void ESP8266SoftwareSerial::begin() {
// this->gpio_rx_pin_->attach_interrupt(ESP8266SoftwareSerial::gpio_intr, this, FALLING);
}
void ESP8266SoftwareSerial::setup(int8_t tx_pin, int8_t rx_pin, uint32_t baud_rate, uint8_t stop_bits, uint32_t nr_bits,
UARTParityOptions parity) {
UARTParityOptions parity, size_t rx_buffer_size) {
this->bit_time_ = F_CPU / baud_rate;
this->rx_buffer_size_ = rx_buffer_size;
this->stop_bits_ = stop_bits;
this->nr_bits_ = nr_bits;
this->parity_ = parity;