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This commit is contained in:
Paul
2020-05-30 14:13:24 +02:00
parent c976d330d2
commit cfeb1ce291
11 changed files with 280 additions and 110 deletions
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84
src/uart/emsuart_esp32.cpp
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@@ -29,14 +29,14 @@
namespace emsesp {
static intr_handle_t uart_handle;
static RingbufHandle_t buf_handle = NULL;
static uint8_t rxbuf[UART_FIFO_LEN];
static uint8_t rxlen;
static RingbufHandle_t buf_handle = NULL;
static bool drop_first_rx = true;
static uint8_t tx_mode_ = 0xFF;
/*
* Task to handle the incoming data
*/
void EMSuart::emsuart_recvTask(void * param) {
void EMSuart::emsuart_recvTask(void * para) {
while (1) {
size_t item_size;
uint8_t * telegram = (uint8_t *)xRingbufferReceive(buf_handle, &item_size, portMAX_DELAY);
@@ -48,29 +48,41 @@ void EMSuart::emsuart_recvTask(void * param) {
}
}
}
/*
* UART interrupt, on break read the fifo and put the whole telegram to ringbuffer
*/
static void IRAM_ATTR uart_intr_handle(void * arg) {
void IRAM_ATTR EMSuart::emsuart_rx_intr_handler(void * para) {
static uint8_t rxbuf[EMS_MAXBUFFERSIZE];
static uint8_t length;
if (EMS_UART.int_st.brk_det) {
uint8_t rx_fifo_len = EMS_UART.status.rxfifo_cnt;
for (rxlen = 0; rxlen < rx_fifo_len; rxlen++) {
rxbuf[rxlen] = EMS_UART.fifo.rw_byte; // read all bytes into buffer
}
if ((rxlen == 2) || ((rxlen > 4) && (rxlen <= EMS_MAXBUFFERSIZE))) {
int baseType = 0;
xRingbufferSendFromISR(buf_handle, rxbuf, rxlen - 1, &baseType);
}
EMS_UART.int_clr.brk_det = 1; // clear flag
EMS_UART.conf0.txd_brk = 0; // if it was break from sending, clear bit
length = 0;
while (EMS_UART.status.rxfifo_cnt) {
uint8_t rx = EMS_UART.fifo.rw_byte; // read all bytes into buffer
if (length < EMS_MAXBUFFERSIZE) {
rxbuf[length++] = rx;
}
}
if ((!drop_first_rx) && ((length == 2) || ((length > 4)))) {
int baseType = 0;
xRingbufferSendFromISR(buf_handle, rxbuf, length - 1, &baseType);
}
drop_first_rx = false;
}
}
/*
* init UART driver
*/
void EMSuart::start(uint8_t tx_mode) {
if (tx_mode_ != 0xFF) { // uart already initialized
restart();
return;
}
tx_mode_ = tx_mode;
uart_config_t uart_config = {
.baud_rate = EMSUART_BAUD,
.data_bits = UART_DATA_8_BITS,
@@ -78,17 +90,21 @@ void EMSuart::start(uint8_t tx_mode) {
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
};
ESP_ERROR_CHECK(uart_param_config(EMSUART_UART, &uart_config));
ESP_ERROR_CHECK(uart_set_pin(EMSUART_UART, EMSUART_TXPIN, EMSUART_RXPIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
//EMS_UART.conf1.rxfifo_full_thrhd = 127; // enough to hold the incoming telegram, should never reached
//EMS_UART.idle_conf.tx_brk_num = 12; // breaklength 12 bit
EMS_UART.int_ena.val = 0; // disable all intr.
EMS_UART.int_clr.val = 0xFFFFFFFF; // clear all intr. flags
EMS_UART.int_ena.brk_det = 1; // activate only break
buf_handle = xRingbufferCreate(128, RINGBUF_TYPE_NOSPLIT);
ESP_ERROR_CHECK(uart_isr_register(EMSUART_UART, uart_intr_handle, NULL, ESP_INTR_FLAG_IRAM, &uart_handle));
EMS_UART.int_ena.val = 0; // disable all intr.
EMS_UART.int_clr.val = 0xFFFFFFFF; // clear all intr. flags
EMS_UART.idle_conf.tx_brk_num = 11; // breaklength 11 bit
EMS_UART.idle_conf.rx_idle_thrhd = 12;
drop_first_rx = true;
buf_handle = xRingbufferCreate(128, RINGBUF_TYPE_NOSPLIT);
ESP_ERROR_CHECK(uart_isr_register(EMSUART_UART, emsuart_rx_intr_handler, NULL, ESP_INTR_FLAG_IRAM, &uart_handle));
xTaskCreate(emsuart_recvTask, "emsuart_recvTask", 2048, NULL, 12, NULL);
EMS_UART.int_ena.brk_det = 1; // activate only break
}
/*
@@ -102,18 +118,21 @@ void EMSuart::stop() {
* Restart Interrupt
*/
void EMSuart::restart() {
EMS_UART.int_clr.val = 0xFFFFFFFF; // clear all intr. flags
EMS_UART.int_ena.brk_det = 1; // activate only break
if (EMS_UART.int_raw.brk_det) {
EMS_UART.int_clr.brk_det = 1; // clear flag
drop_first_rx = true; // and drop first frame
}
EMS_UART.int_ena.brk_det = 1; // activate only break
};
/*
* Sends a 1-byte poll, ending with a <BRK>
*/
void EMSuart::send_poll(uint8_t data) {
EMS_UART.conf0.txd_brk = 0; // just to make sure the bit is cleared
EMS_UART.fifo.rw_byte = data;
EMS_UART.idle_conf.tx_brk_num = 12; // breaklength 12 bit
EMS_UART.conf0.txd_brk = 1; // sending ends in a break
EMS_UART.conf0.txd_brk = 0; // just to make sure the bit is cleared
EMS_UART.fifo.rw_byte = data;
//EMS_UART.idle_conf.tx_brk_num = 11; // breaklength 11 bit
EMS_UART.conf0.txd_brk = 1; // sending ends in a break
}
/*
@@ -123,16 +142,13 @@ void EMSuart::send_poll(uint8_t data) {
*/
EMSUART_STATUS EMSuart::transmit(uint8_t * buf, uint8_t len) {
if (len > 0) {
if (EMS_UART.status.txfifo_cnt > 0) { // fifo not empty
return EMS_TX_WTD_TIMEOUT;
}
EMS_UART.conf0.txd_brk = 0; // just to make sure the bit is cleared
for (uint8_t i = 0; i < len; i++) {
EMS_UART.fifo.rw_byte = buf[i];
}
//uart_tx_chars(EMSUART_UART, (const char *)buf, len);
EMS_UART.idle_conf.tx_brk_num = 12; // breaklength 12 bit
EMS_UART.conf0.txd_brk = 1; // sending ends in a break
//EMS_UART.idle_conf.tx_brk_num = 11; // breaklength 11 bit
EMS_UART.conf0.txd_brk = 1; // sending ends in a break
}
return EMS_TX_STATUS_OK;
}