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add tx_mode back

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This commit is contained in:
Paul
2019-08-30 23:57:08 +02:00
parent fe4dde94de
commit bbbb9f13ec
7 changed files with 169 additions and 73 deletions
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147
src/emsuart.cpp
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@@ -170,6 +170,37 @@ void ICACHE_FLASH_ATTR emsuart_start() {
ETS_UART_INTR_ENABLE();
}
/*
* Send a BRK signal
* Which is a 11-bit set of zero's (11 cycles)
*/
void ICACHE_FLASH_ATTR emsuart_tx_brk() {
uint32_t tmp;
// must make sure Tx FIFO is empty
while (((USS(EMSUART_UART) >> USTXC) & 0xFF) != 0)
;
tmp = ((1 << UCRXRST) | (1 << UCTXRST)); // bit mask
USC0(EMSUART_UART) |= (tmp); // set bits
USC0(EMSUART_UART) &= ~(tmp); // clear bits
// To create a 11-bit <BRK> we set TXD_BRK bit so the break signal will
// automatically be sent when the tx fifo is empty
tmp = (1 << UCBRK);
GPIO_H(TX_MARK_MASK);
USC0(EMSUART_UART) |= (tmp); // set bit
if (EMS_Sys_Status.emsTxMode <= 1) { // classic mode and ems+ (0, 1)
delayMicroseconds(EMSUART_TX_BRK_WAIT);
} else if (EMS_Sys_Status.emsTxMode == 3) { // junkers mode
delayMicroseconds(EMSUART_TX_WAIT_BRK - EMSUART_TX_LAG); // 1144 (11 Bits)
}
USC0(EMSUART_UART) &= ~(tmp); // clear bit
GPIO_L(TX_MARK_MASK);
}
/*
* Send to Tx, ending with a <BRK>
*/
@@ -182,8 +213,29 @@ _EMS_TX_STATUS ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
if (len) {
LA_PULSE(50);
/*
*
if (EMS_Sys_Status.emsTxMode == 2) { // With extra tx delay for EMS+
for (uint8_t i = 0; i < len; i++) {
TX_PULSE(EMSUART_BIT_TIME / 4);
USF(EMSUART_UART) = buf[i];
delayMicroseconds(EMSUART_TX_BRK_WAIT); // https://github.com/proddy/EMS-ESP/issues/23#
}
emsuart_tx_brk(); // send <BRK>
} else if (EMS_Sys_Status.emsTxMode == 3) { // Junkers logic by @philrich
for (uint8_t i = 0; i < len; i++) {
TX_PULSE(EMSUART_BIT_TIME / 4);
USF(EMSUART_UART) = buf[i];
// just to be safe wait for tx fifo empty (needed?)
while (((USS(EMSUART_UART) >> USTXC) & 0xff) != 0)
;
// wait until bits are sent on wire
delayMicroseconds(EMSUART_TX_WAIT_BYTE - EMSUART_TX_LAG + EMSUART_TX_WAIT_GAP);
}
emsuart_tx_brk(); // send <BRK>
} else if (EMS_Sys_Status.emsTxMode == 1) {
/*
* based on code from https://github.com/proddy/EMS-ESP/issues/103 by @susisstrolch
* we emit the whole telegram, with Rx interrupt disabled, collecting busmaster response in FIFO.
* after sending the last char we poll the Rx status until either
@@ -209,61 +261,62 @@ _EMS_TX_STATUS ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
#define EMSUART_BUSY_WAIT (EMSUART_BIT_TIME / 8)
#define EMS_TX_TO_CHARS (2 + 20)
#define EMS_TX_TO_COUNT ((EMS_TX_TO_CHARS)*10 * 8)
uint16_t wdc = EMS_TX_TO_COUNT;
ETS_UART_INTR_DISABLE(); // disable rx interrupt
uint16_t wdc = EMS_TX_TO_COUNT;
ETS_UART_INTR_DISABLE(); // disable rx interrupt
// clear Rx status register
USC0(EMSUART_UART) |= (1 << UCRXRST); // reset uart rx fifo
emsuart_flush_fifos();
// clear Rx status register
USC0(EMSUART_UART) |= (1 << UCRXRST); // reset uart rx fifo
emsuart_flush_fifos();
// throw out the telegram...
for (uint8_t i = 0; i < len && result == EMS_TX_STATUS_OK;) {
GPIO_H(TX_MARK_MASK);
// throw out the telegram...
for (uint8_t i = 0; i < len && result == EMS_TX_STATUS_OK;) {
GPIO_H(TX_MARK_MASK);
wdc = EMS_TX_TO_COUNT;
volatile uint8_t _usrxc = (USS(EMSUART_UART) >> USRXC) & 0xFF;
USF(EMSUART_UART) = buf[i++]; // send each Tx byte
// wait for echo from busmaster
GPIO_L(TX_MARK_MASK);
while (((USS(EMSUART_UART) >> USRXC) & 0xFF) == _usrxc) {
delayMicroseconds(EMSUART_BUSY_WAIT); // burn CPU cycles...
if (--wdc == 0) {
EMS_Sys_Status.emsTxStatus = result = EMS_TX_WTD_TIMEOUT;
break;
}
if (USIR(EMSUART_UART) & (1 << UIBD)) {
USIC(EMSUART_UART) = (1 << UIBD); // clear BRK detect IRQ
EMS_Sys_Status.emsTxStatus = result = EMS_TX_BRK_DETECT;
wdc = EMS_TX_TO_COUNT;
volatile uint8_t _usrxc = (USS(EMSUART_UART) >> USRXC) & 0xFF;
USF(EMSUART_UART) = buf[i++]; // send each Tx byte
// wait for echo from busmaster
GPIO_L(TX_MARK_MASK);
while (((USS(EMSUART_UART) >> USRXC) & 0xFF) == _usrxc) {
delayMicroseconds(EMSUART_BUSY_WAIT); // burn CPU cycles...
if (--wdc == 0) {
EMS_Sys_Status.emsTxStatus = result = EMS_TX_WTD_TIMEOUT;
break;
}
if (USIR(EMSUART_UART) & (1 << UIBD)) {
USIC(EMSUART_UART) = (1 << UIBD); // clear BRK detect IRQ
EMS_Sys_Status.emsTxStatus = result = EMS_TX_BRK_DETECT;
}
}
}
}
// we got the whole telegram in the Rx buffer
// on Rx-BRK (bus collision), we simply enable Rx and leave it
// otherwise we send the final Tx-BRK in the loopback and re=enable Rx-INT.
// worst case, we'll see an additional Rx-BRK...
if (result != EMS_TX_STATUS_OK) {
LA_PULSE(200); // mark Tx error
} else {
// neither bus collision nor timeout - send terminating BRK signal
GPIO_H(TX_MARK_MASK);
if (!(USIS(EMSUART_UART) & (1 << UIBD))) {
// no bus collision - send terminating BRK signal
USC0(EMSUART_UART) |= (1 << UCLBE) | (1 << UCBRK); // enable loopback & set <BRK>
// we got the whole telegram in the Rx buffer
// on Rx-BRK (bus collision), we simply enable Rx and leave it
// otherwise we send the final Tx-BRK in the loopback and re=enable Rx-INT.
// worst case, we'll see an additional Rx-BRK...
if (result != EMS_TX_STATUS_OK) {
LA_PULSE(200); // mark Tx error
} else {
// neither bus collision nor timeout - send terminating BRK signal
GPIO_H(TX_MARK_MASK);
if (!(USIS(EMSUART_UART) & (1 << UIBD))) {
// no bus collision - send terminating BRK signal
USC0(EMSUART_UART) |= (1 << UCLBE) | (1 << UCBRK); // enable loopback & set <BRK>
// wait until BRK detected...
while (!(USIR(EMSUART_UART) & (1 << UIBD))) {
// delayMicroseconds(EMSUART_BUSY_WAIT);
delayMicroseconds(EMSUART_BIT_TIME);
// wait until BRK detected...
while (!(USIR(EMSUART_UART) & (1 << UIBD))) {
// delayMicroseconds(EMSUART_BUSY_WAIT);
delayMicroseconds(EMSUART_BIT_TIME);
}
USC0(EMSUART_UART) &= ~((1 << UCBRK) | (1 << UCLBE)); // disable loopback & clear <BRK>
USIC(EMSUART_UART) = (1 << UIBD); // clear BRK detect IRQ
phantomBreak = 1;
}
USC0(EMSUART_UART) &= ~((1 << UCBRK) | (1 << UCLBE)); // disable loopback & clear <BRK>
USIC(EMSUART_UART) = (1 << UIBD); // clear BRK detect IRQ
phantomBreak = 1;
GPIO_L(TX_MARK_MASK);
}
GPIO_L(TX_MARK_MASK);
ETS_UART_INTR_ENABLE(); // receive anything from FIFO...
}
ETS_UART_INTR_ENABLE(); // receive anything from FIFO...
}
return result;
}