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esp32 uart tx-modes working

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This commit is contained in:
MichaelDvP
2020-07-03 10:32:10 +02:00
parent 7d4d69ae62
commit d9fd27c22b
1 changed files with 36 additions and 29 deletions
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65
src/uart/emsuart_esp32.cpp
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@@ -87,18 +87,22 @@ void IRAM_ATTR EMSuart::emsuart_rx_intr_handler(void * para) {
void IRAM_ATTR EMSuart::emsuart_tx_timer_intr_handler() {
if(emsTxBufLen == 0) {
return;
}
if(tx_mode_ > 50) {
for (uint8_t i = 0; i< emsTxBufLen, i++) {
EMS_UART.fifo.rw_byte = emsTxBuf[emsTxBufIdx];
for (uint8_t i = 0; i < emsTxBufLen; i++) {
EMS_UART.fifo.rw_byte = emsTxBuf[i];
}
EMS_UART.conf0.txd_brk = 1; // <brk> after send
timerAlarmDisable(timer);
} else {
if (emsTxBufIdx < emsTxBufLen) {
if (emsTxBufIdx + 1 < emsTxBufLen) {
EMS_UART.fifo.rw_byte = emsTxBuf[emsTxBufIdx];
timerAlarmWrite(timer, emsTxWait, false);
timerAlarmEnable(timer);
} else if (emsTxBufIdx + 1 == emsTxBufLen) {
EMS_UART.fifo.rw_byte = emsTxBuf[emsTxBufIdx];
} else if (emsTxBufIdx == emsTxBufLen) {
EMS_UART.conf0.txd_brk = 1; // <brk> after send
timerAlarmDisable(timer);
}
emsTxBufIdx++;
}
@@ -108,11 +112,6 @@ void IRAM_ATTR EMSuart::emsuart_tx_timer_intr_handler() {
* init UART driver
*/
void EMSuart::start(const uint8_t tx_mode) {
if(tx_mode > 50) {
emsTxWait = EMSUART_TX_BIT_TIME * (tx_mode - 50);
} else if (tx_mode > 5) {
emsTxWait = EMSUART_TX_BIT_TIME * (tx_mode + 10);
}
if (tx_mode_ != 0xFF) { // uart already initialized
tx_mode_ = tx_mode;
restart();
@@ -132,18 +131,15 @@ void EMSuart::start(const uint8_t tx_mode) {
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 = 0;
EMS_UART.idle_conf.rx_idle_thrhd = 256;
drop_next_rx = true;
buf_handle = xRingbufferCreate(128, RINGBUF_TYPE_NOSPLIT);
uart_isr_register(EMSUART_UART, emsuart_rx_intr_handler, NULL, ESP_INTR_FLAG_IRAM, &uart_handle);
xTaskCreate(emsuart_recvTask, "emsuart_recvTask", 2048, NULL, configMAX_PRIORITIES - 1, NULL);
EMS_UART.int_ena.brk_det = 1; // activate only break
// EMS_UART.int_ena.frm_err = 1;
emsTxBufIdx = 0;
emsTxBufLen = 0;
timer = timerBegin(1, 80, true); // timer prescale to 1 µs, countup
timer = timerBegin(1, 80, true); // timer prescale to 1 µs, countup
timerAttachInterrupt(timer, &emsuart_tx_timer_intr_handler, true); // Timer with edge interrupt
restart();
}
/*
@@ -165,21 +161,30 @@ void EMSuart::restart() {
EMS_UART.int_ena.brk_det = 1; // activate only break
emsTxBufIdx = 0;
emsTxBufLen = 0;
if (tx_mode_ == 1) {
EMS_UART.idle_conf.tx_idle_num = 5;
} else if (tx_mode_ == 2) {
EMS_UART.idle_conf.tx_idle_num = 10;
} else if (tx_mode_ == 3) {
EMS_UART.idle_conf.tx_idle_num = 7;
} else if (tx_mode_ == 4) {
EMS_UART.idle_conf.tx_idle_num = 2;
} else if (tx_mode_ == 5) {
EMS_UART.idle_conf.tx_idle_num = 2;
} else if (tx_mode_ <= 50) {
EMS_UART.idle_conf.tx_idle_num = tx_mode_;
emsTxWait = EMSUART_TX_BIT_TIME * (tx_mode_ + 10);
} else {
EMS_UART.idle_conf.tx_idle_num = 2;
emsTxWait = EMSUART_TX_BIT_TIME * (tx_mode_ - 50);
}
}
/*
* Sends a 1-byte poll, ending with a <BRK>
*/
void EMSuart::send_poll(const uint8_t data) {
EMS_UART.conf0.txd_brk = 0;
EMS_UART.fifo.rw_byte = data;
if (tx_mode_ == EMS_TXMODE_EMSPLUS) {
delayMicroseconds(EMSUART_TX_WAIT_PLUS);
} else if (tx_mode_ == EMS_TXMODE_HT3) {
delayMicroseconds(EMSUART_TX_WAIT_HT3);
} else if (tx_mode_ == 1) {
delayMicroseconds(EMSUART_TX_WAIT_BRK);
}
EMS_UART.conf0.txd_brk = 1; // <brk> after send
return;
}
@@ -202,13 +207,13 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
}
emsTxBufIdx = 0;
emsTxBufLen = len;
timerAlarmWrite(timer, emsTxWait, true);
timerAlarmWrite(timer, emsTxWait, false);
timerAlarmEnable(timer);
return EMS_TX_STATUS_OK;
}
if (tx_mode_ == 5) { // wait before sending
vTaskDelay(3 / portTICK_PERIOD_MS);
vTaskDelay(4 / portTICK_PERIOD_MS);
for (uint8_t i = 0; i < len; i++) {
EMS_UART.fifo.rw_byte = buf[i];
}
@@ -224,10 +229,11 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
}
if (tx_mode_ == EMS_TXMODE_EMSPLUS) { // EMS+ with long delay
for (uint8_t i = 0; i < len; i++) {
for (uint8_t i = 0; i < len - 1; i++) {
EMS_UART.fifo.rw_byte = buf[i];
delayMicroseconds(EMSUART_TX_WAIT_PLUS);
}
EMS_UART.fifo.rw_byte = buf[len - 1];
EMS_UART.conf0.txd_brk = 1; // <brk> after send, cleard by hardware after send
return EMS_TX_STATUS_OK;
}
@@ -246,7 +252,7 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
// flush fifos -- not supported in ESP32 uart #2!
// EMS_UART.conf0.rxfifo_rst = 1;
// EMS_UART.conf0.txfifo_rst = 1;
for (uint8_t i = 0; i < len; i++) {
for (uint8_t i = 0; i < len - 1; i++) {
volatile uint8_t _usrxc = EMS_UART.status.rxfifo_cnt;
EMS_UART.fifo.rw_byte = buf[i]; // send each Tx byte
uint16_t timeoutcnt = EMSUART_TX_TIMEOUT;
@@ -254,6 +260,7 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
delayMicroseconds(EMSUART_TX_BUSY_WAIT); // burn CPU cycles...
}
}
EMS_UART.fifo.rw_byte = buf[len - 1]; // send each Tx byte
EMS_UART.conf0.txd_brk = 1; // <brk> after send, cleard by hardware after send
return EMS_TX_STATUS_OK;
}