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aec02afcdc
* Fix clang-tidy header filter * Allow private members * Fix clang-tidy detections * Run clang-format * Fix remaining detections * Fix graph * Run clang-format
295 lines
9.8 KiB
C++
295 lines
9.8 KiB
C++
#ifdef USE_ESP8266
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#include "uart_component_esp8266.h"
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#include "esphome/core/application.h"
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#include "esphome/core/defines.h"
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#include "esphome/core/helpers.h"
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#include "esphome/core/log.h"
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#ifdef USE_LOGGER
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#include "esphome/components/logger/logger.h"
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#endif
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namespace esphome {
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namespace uart {
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static const char *const TAG = "uart.arduino_esp8266";
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bool ESP8266UartComponent::serial0_in_use = false; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
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uint32_t ESP8266UartComponent::get_config() {
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uint32_t config = 0;
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if (this->parity_ == UART_CONFIG_PARITY_NONE)
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config |= UART_PARITY_NONE;
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else if (this->parity_ == UART_CONFIG_PARITY_EVEN)
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config |= UART_PARITY_EVEN;
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else if (this->parity_ == UART_CONFIG_PARITY_ODD)
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config |= UART_PARITY_ODD;
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switch (this->data_bits_) {
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case 5:
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config |= UART_NB_BIT_5;
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break;
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case 6:
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config |= UART_NB_BIT_6;
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break;
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case 7:
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config |= UART_NB_BIT_7;
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break;
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case 8:
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config |= UART_NB_BIT_8;
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break;
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}
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if (this->stop_bits_ == 1)
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config |= UART_NB_STOP_BIT_1;
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else
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config |= UART_NB_STOP_BIT_2;
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return config;
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}
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void ESP8266UartComponent::setup() {
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ESP_LOGCONFIG(TAG, "Setting up UART bus...");
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// Use Arduino HardwareSerial UARTs if all used pins match the ones
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// preconfigured by the platform. For example if RX disabled but TX pin
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// is 1 we still want to use Serial.
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SerialConfig config = static_cast<SerialConfig>(get_config());
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if (!ESP8266UartComponent::serial0_in_use && (tx_pin_ == nullptr || tx_pin_->get_pin() == 1) &&
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(rx_pin_ == nullptr || rx_pin_->get_pin() == 3)
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#ifdef USE_LOGGER
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// we will use UART0 if logger isn't using it in swapped mode
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&& (logger::global_logger->get_hw_serial() == nullptr ||
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logger::global_logger->get_uart() != logger::UART_SELECTION_UART0_SWAP)
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#endif
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) {
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this->hw_serial_ = &Serial;
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this->hw_serial_->begin(this->baud_rate_, config);
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this->hw_serial_->setRxBufferSize(this->rx_buffer_size_);
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ESP8266UartComponent::serial0_in_use = true;
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} else if (!ESP8266UartComponent::serial0_in_use && (tx_pin_ == nullptr || tx_pin_->get_pin() == 15) &&
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(rx_pin_ == nullptr || rx_pin_->get_pin() == 13)
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#ifdef USE_LOGGER
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// we will use UART0 swapped if logger isn't using it in regular mode
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&& (logger::global_logger->get_hw_serial() == nullptr ||
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logger::global_logger->get_uart() != logger::UART_SELECTION_UART0)
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#endif
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) {
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this->hw_serial_ = &Serial;
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this->hw_serial_->begin(this->baud_rate_, config);
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this->hw_serial_->setRxBufferSize(this->rx_buffer_size_);
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this->hw_serial_->swap();
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ESP8266UartComponent::serial0_in_use = true;
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} else if ((tx_pin_ == nullptr || tx_pin_->get_pin() == 2) && (rx_pin_ == nullptr || rx_pin_->get_pin() == 8)) {
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this->hw_serial_ = &Serial1;
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this->hw_serial_->begin(this->baud_rate_, config);
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this->hw_serial_->setRxBufferSize(this->rx_buffer_size_);
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} else {
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this->sw_serial_ = new ESP8266SoftwareSerial(); // NOLINT
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this->sw_serial_->setup(tx_pin_, rx_pin_, this->baud_rate_, this->stop_bits_, this->data_bits_, this->parity_,
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this->rx_buffer_size_);
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}
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}
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void ESP8266UartComponent::dump_config() {
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ESP_LOGCONFIG(TAG, "UART Bus:");
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LOG_PIN(" TX Pin: ", tx_pin_);
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LOG_PIN(" RX Pin: ", rx_pin_);
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if (this->rx_pin_ != nullptr) {
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ESP_LOGCONFIG(TAG, " RX Buffer Size: %u", this->rx_buffer_size_); // NOLINT
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}
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ESP_LOGCONFIG(TAG, " Baud Rate: %u baud", this->baud_rate_);
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ESP_LOGCONFIG(TAG, " Data Bits: %u", this->data_bits_);
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ESP_LOGCONFIG(TAG, " Parity: %s", LOG_STR_ARG(parity_to_str(this->parity_)));
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ESP_LOGCONFIG(TAG, " Stop bits: %u", this->stop_bits_);
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if (this->hw_serial_ != nullptr) {
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ESP_LOGCONFIG(TAG, " Using hardware serial interface.");
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} else {
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ESP_LOGCONFIG(TAG, " Using software serial");
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}
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this->check_logger_conflict();
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}
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void ESP8266UartComponent::check_logger_conflict() {
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#ifdef USE_LOGGER
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if (this->hw_serial_ == nullptr || logger::global_logger->get_baud_rate() == 0) {
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return;
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}
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if (this->hw_serial_ == logger::global_logger->get_hw_serial()) {
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ESP_LOGW(TAG, " You're using the same serial port for logging and the UART component. Please "
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"disable logging over the serial port by setting logger->baud_rate to 0.");
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}
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#endif
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}
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void ESP8266UartComponent::write_array(const uint8_t *data, size_t len) {
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if (this->hw_serial_ != nullptr) {
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this->hw_serial_->write(data, len);
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} else {
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for (size_t i = 0; i < len; i++)
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this->sw_serial_->write_byte(data[i]);
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}
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for (size_t i = 0; i < len; i++) {
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ESP_LOGVV(TAG, " Wrote 0b" BYTE_TO_BINARY_PATTERN " (0x%02X)", BYTE_TO_BINARY(data[i]), data[i]);
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}
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}
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bool ESP8266UartComponent::peek_byte(uint8_t *data) {
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if (!this->check_read_timeout_())
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return false;
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if (this->hw_serial_ != nullptr) {
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*data = this->hw_serial_->peek();
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} else {
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*data = this->sw_serial_->peek_byte();
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}
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return true;
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}
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bool ESP8266UartComponent::read_array(uint8_t *data, size_t len) {
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if (!this->check_read_timeout_(len))
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return false;
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if (this->hw_serial_ != nullptr) {
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this->hw_serial_->readBytes(data, len);
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} else {
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for (size_t i = 0; i < len; i++)
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data[i] = this->sw_serial_->read_byte();
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}
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for (size_t i = 0; i < len; i++) {
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ESP_LOGVV(TAG, " Read 0b" BYTE_TO_BINARY_PATTERN " (0x%02X)", BYTE_TO_BINARY(data[i]), data[i]);
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}
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return true;
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}
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int ESP8266UartComponent::available() {
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if (this->hw_serial_ != nullptr) {
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return this->hw_serial_->available();
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} else {
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return this->sw_serial_->available();
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}
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}
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void ESP8266UartComponent::flush() {
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ESP_LOGVV(TAG, " Flushing...");
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if (this->hw_serial_ != nullptr) {
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this->hw_serial_->flush();
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} else {
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this->sw_serial_->flush();
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}
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}
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void ESP8266SoftwareSerial::setup(InternalGPIOPin *tx_pin, InternalGPIOPin *rx_pin, uint32_t baud_rate,
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uint8_t stop_bits, uint32_t data_bits, UARTParityOptions parity,
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size_t rx_buffer_size) {
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this->bit_time_ = F_CPU / baud_rate;
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this->rx_buffer_size_ = rx_buffer_size;
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this->stop_bits_ = stop_bits;
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this->data_bits_ = data_bits;
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this->parity_ = parity;
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if (tx_pin != nullptr) {
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gpio_tx_pin_ = tx_pin;
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gpio_tx_pin_->setup();
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tx_pin_ = gpio_tx_pin_->to_isr();
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tx_pin_.digital_write(true);
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}
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if (rx_pin != nullptr) {
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gpio_rx_pin_ = rx_pin;
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gpio_rx_pin_->setup();
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rx_pin_ = gpio_rx_pin_->to_isr();
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rx_buffer_ = new uint8_t[this->rx_buffer_size_]; // NOLINT
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gpio_rx_pin_->attach_interrupt(ESP8266SoftwareSerial::gpio_intr, this, gpio::INTERRUPT_FALLING_EDGE);
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}
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}
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void IRAM_ATTR ESP8266SoftwareSerial::gpio_intr(ESP8266SoftwareSerial *arg) {
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uint32_t wait = arg->bit_time_ + arg->bit_time_ / 3 - 500;
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const uint32_t start = arch_get_cpu_cycle_count();
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uint8_t rec = 0;
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// Manually unroll the loop
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for (int i = 0; i < arg->data_bits_; i++)
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rec |= arg->read_bit_(&wait, start) << i;
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/* If parity is enabled, just read it and ignore it. */
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/* TODO: Should we check parity? Or is it too slow for nothing added..*/
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if (arg->parity_ == UART_CONFIG_PARITY_EVEN)
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arg->read_bit_(&wait, start);
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else if (arg->parity_ == UART_CONFIG_PARITY_ODD)
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arg->read_bit_(&wait, start);
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// Stop bit
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arg->wait_(&wait, start);
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if (arg->stop_bits_ == 2)
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arg->wait_(&wait, start);
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arg->rx_buffer_[arg->rx_in_pos_] = rec;
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arg->rx_in_pos_ = (arg->rx_in_pos_ + 1) % arg->rx_buffer_size_;
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// Clear RX pin so that the interrupt doesn't re-trigger right away again.
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arg->rx_pin_.clear_interrupt();
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}
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void IRAM_ATTR HOT ESP8266SoftwareSerial::write_byte(uint8_t data) {
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if (this->gpio_tx_pin_ == nullptr) {
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ESP_LOGE(TAG, "UART doesn't have TX pins set!");
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return;
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}
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bool parity_bit = false;
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bool need_parity_bit = true;
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if (this->parity_ == UART_CONFIG_PARITY_EVEN)
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parity_bit = false;
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else if (this->parity_ == UART_CONFIG_PARITY_ODD)
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parity_bit = true;
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else
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need_parity_bit = false;
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{
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InterruptLock lock;
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uint32_t wait = this->bit_time_;
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const uint32_t start = arch_get_cpu_cycle_count();
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// Start bit
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this->write_bit_(false, &wait, start);
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for (int i = 0; i < this->data_bits_; i++) {
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bool bit = data & (1 << i);
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this->write_bit_(bit, &wait, start);
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if (need_parity_bit)
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parity_bit ^= bit;
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}
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if (need_parity_bit)
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this->write_bit_(parity_bit, &wait, start);
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// Stop bit
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this->write_bit_(true, &wait, start);
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if (this->stop_bits_ == 2)
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this->wait_(&wait, start);
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}
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}
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void IRAM_ATTR ESP8266SoftwareSerial::wait_(uint32_t *wait, const uint32_t &start) {
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while (arch_get_cpu_cycle_count() - start < *wait)
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;
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*wait += this->bit_time_;
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}
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bool IRAM_ATTR ESP8266SoftwareSerial::read_bit_(uint32_t *wait, const uint32_t &start) {
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this->wait_(wait, start);
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return this->rx_pin_.digital_read();
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}
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void IRAM_ATTR ESP8266SoftwareSerial::write_bit_(bool bit, uint32_t *wait, const uint32_t &start) {
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this->tx_pin_.digital_write(bit);
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this->wait_(wait, start);
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}
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uint8_t ESP8266SoftwareSerial::read_byte() {
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if (this->rx_in_pos_ == this->rx_out_pos_)
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return 0;
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uint8_t data = this->rx_buffer_[this->rx_out_pos_];
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this->rx_out_pos_ = (this->rx_out_pos_ + 1) % this->rx_buffer_size_;
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return data;
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}
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uint8_t ESP8266SoftwareSerial::peek_byte() {
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if (this->rx_in_pos_ == this->rx_out_pos_)
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return 0;
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return this->rx_buffer_[this->rx_out_pos_];
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}
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void ESP8266SoftwareSerial::flush() {
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// Flush is a NO-OP with software serial, all bytes are written immediately.
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}
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int ESP8266SoftwareSerial::available() {
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int avail = int(this->rx_in_pos_) - int(this->rx_out_pos_);
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if (avail < 0)
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return avail + this->rx_buffer_size_;
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return avail;
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}
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} // namespace uart
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} // namespace esphome
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#endif // USE_ESP8266
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