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Merge pull request #402 from MichaelDvP/v2

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Uart mode 5
This commit is contained in:
Proddy
2020-06-19 20:29:38 +02:00
committed by GitHub
parent e0a35066fc 76a5de4bf9
commit 05161e7a39
6 changed files with 76 additions and 12 deletions
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35
src/uart/emsuart_esp32.cpp
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@@ -61,13 +61,25 @@ 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.rxfifo_full) {
EMS_UART.int_clr.rxfifo_full = 1;
emsTxBufIdx++;
if (emsTxBufIdx < emsTxBufLen) {
EMS_UART.conf1.rxfifo_full_thrhd = emsTxBufIdx + 1;
EMS_UART.fifo.rw_byte = emsTxBuf[emsTxBufIdx];
} else if (emsTxBufIdx == emsTxBufLen) {
EMS_UART.conf0.txd_brk = 1; // <brk> after send
EMS_UART.int_ena.rxfifo_full = 0;
EMS_UART.conf1.rxfifo_full_thrhd = 0x7F;
}
}
if (EMS_UART.int_st.brk_det) {
EMS_UART.int_clr.brk_det = 1; // clear flag
if (emsTxBufIdx < emsTxBufLen) { // timer tx_mode is interrupted by <brk>
emsTxBufIdx = emsTxBufLen; // stop timer mode
drop_next_rx = true; // we have trash in buffer
}
length = 0;
length = 0;
while (EMS_UART.status.rxfifo_cnt) {
uint8_t rx = EMS_UART.fifo.rw_byte; // read all bytes from fifo
if (length < EMS_MAXBUFFERSIZE) {
@@ -172,6 +184,12 @@ void EMSuart::send_poll(uint8_t data) {
emsTxBufLen = 1;
timerAlarmWrite(timer, emsTxWait, false);
timerAlarmEnable(timer);
} else if (tx_mode_ == 5) {
EMS_UART.fifo.rw_byte = data;
emsTxBufIdx = 0;
emsTxBufLen = 1;
EMS_UART.conf1.rxfifo_full_thrhd = 1;
EMS_UART.int_ena.rxfifo_full = 1;
} else if (tx_mode_ == EMS_TXMODE_NEW) {
EMS_UART.fifo.rw_byte = data;
EMS_UART.conf0.txd_brk = 1; // <brk> after send
@@ -190,7 +208,7 @@ void EMSuart::send_poll(uint8_t data) {
} else {
volatile uint8_t _usrxc = EMS_UART.status.rxfifo_cnt;
EMS_UART.fifo.rw_byte = data;
uint8_t timeoutcnt = EMSUART_TX_TIMEOUT;
uint16_t timeoutcnt = EMSUART_TX_TIMEOUT;
while ((EMS_UART.status.rxfifo_cnt == _usrxc) && (--timeoutcnt > 0)) {
delayMicroseconds(EMSUART_TX_BUSY_WAIT); // burn CPU cycles...
}
@@ -219,6 +237,17 @@ uint16_t EMSuart::transmit(uint8_t * buf, uint8_t len) {
timerAlarmEnable(timer);
return EMS_TX_STATUS_OK;
}
if (tx_mode_ == 5) {
for (uint8_t i = 0; i < len; i++) {
emsTxBuf[i] = buf[i];
}
EMS_UART.fifo.rw_byte = buf[0];
emsTxBufIdx = 0;
emsTxBufLen = len;
EMS_UART.conf1.rxfifo_full_thrhd = 1;
EMS_UART.int_ena.rxfifo_full = 1;
return EMS_TX_STATUS_OK;
}
if (tx_mode_ == EMS_TXMODE_NEW) { // hardware controlled modes
for (uint8_t i = 0; i < len; i++) {
EMS_UART.fifo.rw_byte = buf[i];
@@ -253,7 +282,7 @@ uint16_t EMSuart::transmit(uint8_t * buf, uint8_t len) {
for (uint8_t i = 0; i < len; i++) {
volatile uint8_t _usrxc = EMS_UART.status.rxfifo_cnt;
EMS_UART.fifo.rw_byte = buf[i]; // send each Tx byte
uint8_t timeoutcnt = EMSUART_TX_TIMEOUT;
uint16_t timeoutcnt = EMSUART_TX_TIMEOUT;
while ((EMS_UART.status.rxfifo_cnt == _usrxc) && (--timeoutcnt > 0)) {
delayMicroseconds(EMSUART_TX_BUSY_WAIT); // burn CPU cycles...
}