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📟 pmme-device: backporting - Match uart_data reading from Rust

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This commit is contained in:
Joseph Ferano 2026-05-17 07:37:52 +07:00
parent a638e0293c
commit 614aef96c5
1 changed files with 5 additions and 6 deletions
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11
pmme-device/c-version/main/pmme.c
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@ -78,7 +78,7 @@ void send_pms7003_command(uint8_t cmd, uint8_t datah, uint8_t datal) {
void read_pm_data(uint8_t *buf) {
uint16_t checksum = 0;
for (int i = 0; i <= 29; i++) {
for (int i = 0; i <= 28; i++) {
checksum += buf[i];
}
uint16_t c = (((uint16_t)buf[30]) << 8) | ((uint16_t)buf[31]);
@ -130,13 +130,12 @@ void pm_sensor_task(void *pvParameters) {
int len = uart_read_bytes(UART_NUM, uart_data, BUF_SIZE, 100 / portTICK_PERIOD_MS);
// ESP_LOGI(TAG, "Received %d bytes from sensor", len);
if (len > 0) {
if (len == 32 && (uart_data[0] != 0x42 || uart_data[1] != 0x4D)) {
if (uart_data[0] != 0x42 || uart_data[1] != 0x4D) {
ESP_LOGW(TAG, "Frame Start does not match 0x42, 0x4D, instead got %x %x", uart_data[0], uart_data[1]);
} else {
} else if (len == 32) {
read_pm_data(uart_data);
// for(int i = 0; i < len && i < BUF_SIZE; i++) {
// ESP_LOGI(TAG, "0x%02X", uart_data[i]);
// }
} else {
ESP_LOGW(TAG, "Unexpected frame length: %d", len);
}
}
uart_flush(UART_NUM);