andry/EMS-ESP32
1
0
Fork 0
mirror of https://github.com/emsesp/EMS-ESP32.git synced 2025-12-08 08:49:52 +03:00
Code Issues Packages Projects Releases Wiki Activity

tx logic

Browse Source
This commit is contained in:
proddy
2019-05-24 15:08:56 +02:00
parent c6a6dca81a
commit 1a638d2611
1 changed files with 10 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/emsuart.cpp
View File

@@ -193,7 +193,6 @@ static inline void ICACHE_FLASH_ATTR emsuart_loopback(bool enable) {
* Send to Tx, ending with a <BRK> * Send to Tx, ending with a <BRK>
*/ */
void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) { void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
// backwards compatibility // backwards compatibility
if (EMS_Sys_Status.emsTxDelay < 2) { if (EMS_Sys_Status.emsTxDelay < 2) {
for (uint8_t i = 0; i < len; i++) { for (uint8_t i = 0; i < len; i++) {
@@ -225,8 +224,10 @@ void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
} }
// wait until we received sizeof(telegram) or RxBRK (== collision detect) // wait until we received sizeof(telegram) or RxBRK (== collision detect)
while ((((USS(EMSUART_UART) >> USRXC) & 0xFF) < len) || (U0IS & (1 << UIBD))) // while ((((USS(EMSUART_UART) >> USRXC) & 0xFF) < len) || !(USIS(EMSUART_UART) & (1 << UIBD)))
while ((((USS(EMSUART_UART) >> USRXC) & 0xFF) < len) || (U0IS & (1 << UIBD))) {
delayMicroseconds(11 * EMSUART_BIT_TIME); // burn CPU cycles... delayMicroseconds(11 * EMSUART_BIT_TIME); // burn CPU cycles...
}
// we got the whole telegram in Rx buffer // we got the whole telegram in Rx buffer
// on Rx-BRK (bus collision), we simply enable Rx and leave // on Rx-BRK (bus collision), we simply enable Rx and leave
@@ -237,17 +238,17 @@ void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
emsuart_loopback(true); emsuart_loopback(true);
USC0(EMSUART_UART) |= (1 << UCBRK); // set <BRK> USC0(EMSUART_UART) |= (1 << UCBRK); // set <BRK>
while (!(U0IS & (1 << UIBD))) ; // wait until BRK detected... while (!(USIS(EMSUART_UART) & (1 << UIBD)))
delayMicroseconds(EMSUART_BIT_TIME / 8); // ~13µs ; // wait until BRK detected...
USC0(EMSUART_UART) &= ~(1 << UCBRK); // clear <BRK> delayMicroseconds(EMSUART_BIT_TIME / 8); // ~13µs
USC0(EMSUART_UART) &= ~(1 << UCBRK); // clear <BRK>
U0IC = (1 << UIBD); // clear BRK detect IRQ USIC(EMSUART_UART) = (1 << UIBD); // clear BRK detect IRQ
emsuart_loopback(false); // disable loopback mode emsuart_loopback(false); // disable loopback mode
} }
emsuart_flush_fifos(); // flush Rx buffer to be sure emsuart_flush_fifos(); // flush Rx buffer to be sure
ETS_UART_INTR_ENABLE(); // receive anything from FIFO... ETS_UART_INTR_ENABLE(); // receive anything from FIFO...
} }
} }