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Code Issues Releases Wiki Activity

rd03d: batch UART reads to reduce per-loop overhead

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This commit is contained in:
J. Nick Koston
2026-02-07 00:32:33 +01:00
parent 86f91eed2f
commit 3f3cf83aab
1 changed files with 41 additions and 28 deletions
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69
esphome/components/rd03d/rd03d.cpp
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@@ -1,4 +1,5 @@
#include "rd03d.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
#include <cmath>
@@ -80,37 +81,49 @@ void RD03DComponent::dump_config() {
}
void RD03DComponent::loop() {
while (this->available()) {
uint8_t byte = this->read();
ESP_LOGVV(TAG, "Received byte: 0x%02X, buffer_pos: %d", byte, this->buffer_pos_);
int avail = this->available();
if (avail <= 0)
return;
// Check if we're looking for frame header
if (this->buffer_pos_ < FRAME_HEADER_SIZE) {
if (byte == FRAME_HEADER[this->buffer_pos_]) {
this->buffer_[this->buffer_pos_++] = byte;
} else if (byte == FRAME_HEADER[0]) {
// Start over if we see a potential new header
this->buffer_[0] = byte;
this->buffer_pos_ = 1;
} else {
uint8_t buf[64];
while (avail > 0) {
size_t to_read = std::min(static_cast<size_t>(avail), sizeof(buf));
if (!this->read_array(buf, to_read)) {
break;
}
avail -= to_read;
for (size_t i = 0; i < to_read; i++) {
uint8_t byte = buf[i];
ESP_LOGVV(TAG, "Received byte: 0x%02X, buffer_pos: %d", byte, this->buffer_pos_);
// Check if we're looking for frame header
if (this->buffer_pos_ < FRAME_HEADER_SIZE) {
if (byte == FRAME_HEADER[this->buffer_pos_]) {
this->buffer_[this->buffer_pos_++] = byte;
} else if (byte == FRAME_HEADER[0]) {
// Start over if we see a potential new header
this->buffer_[0] = byte;
this->buffer_pos_ = 1;
} else {
this->buffer_pos_ = 0;
}
continue;
}
// Accumulate data bytes
this->buffer_[this->buffer_pos_++] = byte;
// Check if we have a complete frame
if (this->buffer_pos_ == FRAME_SIZE) {
// Validate footer
if (this->buffer_[FRAME_SIZE - 2] == FRAME_FOOTER[0] && this->buffer_[FRAME_SIZE - 1] == FRAME_FOOTER[1]) {
this->process_frame_();
} else {
ESP_LOGW(TAG, "Invalid frame footer: 0x%02X 0x%02X (expected 0x55 0xCC)", this->buffer_[FRAME_SIZE - 2],
this->buffer_[FRAME_SIZE - 1]);
}
this->buffer_pos_ = 0;
}
continue;
}
// Accumulate data bytes
this->buffer_[this->buffer_pos_++] = byte;
// Check if we have a complete frame
if (this->buffer_pos_ == FRAME_SIZE) {
// Validate footer
if (this->buffer_[FRAME_SIZE - 2] == FRAME_FOOTER[0] && this->buffer_[FRAME_SIZE - 1] == FRAME_FOOTER[1]) {
this->process_frame_();
} else {
ESP_LOGW(TAG, "Invalid frame footer: 0x%02X 0x%02X (expected 0x55 0xCC)", this->buffer_[FRAME_SIZE - 2],
this->buffer_[FRAME_SIZE - 1]);
}
this->buffer_pos_ = 0;
}
}
}