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uart in IRAM

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This commit is contained in:
MichaelDvP
2022-05-10 12:36:42 +02:00
parent 3e2f7a5976
commit 8339fc735c
2 changed files with 17 additions and 8 deletions
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1
platformio.ini
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@@ -29,6 +29,7 @@ build_flags =
-D NO_GLOBAL_ARDUINOOTA
-D ARDUINOJSON_ENABLE_STD_STRING=1
-D ARDUINOJSON_USE_DOUBLE=0
-D CONFIG_UART_ISR_IN_IRAM
unbuild_flags =
${common.core_unbuild_flags}

22
src/uart/emsuart_esp32.cpp
View File

@@ -39,21 +39,28 @@ uint8_t tx_mode_;
void EMSuart::uart_event_task(void * pvParameters) {
uart_event_t event;
uint8_t telegram[EMS_MAXBUFFERSIZE];
size_t length;
uint8_t length = 0;
while (1) {
//Waiting for UART event.
if (xQueueReceive(uart_queue, (void *)&event, portMAX_DELAY)) {
if (event.type == UART_BREAK) {
uart_get_buffered_data_len(EMSUART_NUM, &length);
if (event.type == UART_DATA) {
length += event.size;
} else if (event.type == UART_BREAK) {
if (length == 2 || (length >= 6 && length <= EMS_MAXBUFFERSIZE)) {
uart_read_bytes(EMSUART_NUM, telegram, length, portMAX_DELAY);
if (telegram[0] && !telegram[length - 1]) {
// if (telegram[0] && !telegram[length - 1]) {
EMSESP::incoming_telegram(telegram, (uint8_t)(length - 1));
}
// }
} else {
uart_flush_input(EMSUART_NUM);
// flush buffer up to break
uint8_t buf[length];
uart_read_bytes(EMSUART_NUM, buf, length, portMAX_DELAY);
}
length = 0;
} else if (event.type == UART_BUFFER_FULL) { // if we miss something
uart_flush_input(EMSUART_NUM);
length = 0;
}
}
}
@@ -73,10 +80,11 @@ void EMSuart::start(const uint8_t tx_mode, const uint8_t rx_gpio, const uint8_t
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
uart_driver_install(EMSUART_NUM, 129, 0, EMS_MAXBUFFERSIZE * 3, &uart_queue, 0); // buffer must be > fifo
uart_driver_install(EMSUART_NUM, 129, 0, (EMS_MAXBUFFERSIZE + 1) * 2, &uart_queue, 0); // buffer must be > fifo
uart_param_config(EMSUART_NUM, &uart_config);
uart_set_pin(EMSUART_NUM, tx_gpio, rx_gpio, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
uart_set_rx_full_threshold(EMSUART_NUM, 1);
uart_set_rx_timeout(EMSUART_NUM, 0); // disable
xTaskCreate(uart_event_task, "uart_event_task", 2048, NULL, configMAX_PRIORITIES - 1, NULL);
}
tx_mode_ = tx_mode;