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merged Michael's latest UART code for ESP8266

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proddy
2020-07-26 22:36:18 +02:00
parent 2ec35d1fbc
commit b59d711ed4
2 changed files with 21 additions and 9 deletions
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18
src/uart/emsuart_esp8266.cpp
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@@ -114,7 +114,11 @@ void ICACHE_FLASH_ATTR EMSuart::emsuart_flush_fifos() {
* init UART0 driver
*/
void ICACHE_FLASH_ATTR EMSuart::start(uint8_t tx_mode) {
emsTxWait = 5 * EMSUART_TX_BIT_TIME * (tx_mode + 10); // bittimes wait between bytes
if (tx_mode_ > 100) {
emsTxWait = 5 * EMSUART_TX_BIT_TIME * (tx_mode - 90);
} else {
emsTxWait = 5 * EMSUART_TX_BIT_TIME * (tx_mode + 10); // bittimes wait to next bytes
}
if (tx_mode_ != 0xFF) { // it's a restart no need to configure uart
tx_mode_ = tx_mode;
restart();
@@ -175,12 +179,12 @@ void ICACHE_FLASH_ATTR EMSuart::start(uint8_t tx_mode) {
system_uart_swap();
ETS_UART_INTR_ATTACH(emsuart_rx_intr_handler, nullptr);
// ETS_UART_INTR_ENABLE();
drop_next_rx = true;
// for sending with large delay in EMS+ mode we use a timer interrupt
timer1_attachInterrupt(emsuart_tx_timer_intr_handler); // Add ISR Function
timer1_enable(TIM_DIV16, TIM_EDGE, TIM_SINGLE); // 5 MHz timer
ETS_UART_INTR_ENABLE();
USIE(EMSUART_UART) = (1 << UIBD);
}
@@ -190,7 +194,9 @@ void ICACHE_FLASH_ATTR EMSuart::start(uint8_t tx_mode) {
*/
void ICACHE_FLASH_ATTR EMSuart::stop() {
USIE(EMSUART_UART) = 0;
// timer1_disable();
USC0(EMSUART_UART) &= ~(1 << UCBRK); // clear BRK bit
timer1_disable();
sending_ = false;
}
/*
@@ -203,7 +209,7 @@ void ICACHE_FLASH_ATTR EMSuart::restart() {
}
emsTxBufIdx = 0;
emsTxBufLen = 0;
// timer1_enable(TIM_DIV16, TIM_EDGE, TIM_SINGLE);
timer1_enable(TIM_DIV16, TIM_EDGE, TIM_SINGLE);
USIE(EMSUART_UART) = (1 << UIBD);
}
@@ -282,7 +288,11 @@ uint16_t ICACHE_FLASH_ATTR EMSuart::transmit(uint8_t * buf, uint8_t len) {
USF(EMSUART_UART) = buf[0]; // send first byte
emsTxBufIdx = 0;
emsTxBufLen = len;
if (tx_mode_ > 100) {
timer1_write(EMSUART_TX_WAIT_REPLY);
} else {
timer1_write(emsTxWait);
}
return EMS_TX_STATUS_OK;
}

6
src/uart/emsuart_esp8266.h
View File

@@ -41,12 +41,14 @@
// LEGACY
#define EMSUART_TX_BIT_TIME 104 // bit time @9600 baud
#define EMSUART_TX_WAIT_BRK (EMSUART_TX_BIT_TIME * 11) // 1144
#define EMSUART_TX_WAIT_BRK (EMSUART_TX_BIT_TIME * 10)
#define EMSUART_TX_WAIT_REPLY 500000 // delay 100ms after first byte
// EMS 1.0
#define EMSUART_TX_BUSY_WAIT (EMSUART_TX_BIT_TIME / 8) // 13
// #define EMSUART_TX_TIMEOUT (22 * EMSUART_TX_BIT_TIME / EMSUART_TX_BUSY_WAIT) // 176
#define EMSUART_TX_TIMEOUT (32 * 8) // 256 for tx_mode 1 - see https://github.com/proddy/EMS-ESP/issues/398#issuecomment-645886277
// #define EMSUART_TX_TIMEOUT (32 * 8) // 256 for tx_mode 1 - see https://github.com/proddy/EMS-ESP/issues/398#issuecomment-645886277
#define EMSUART_TX_TIMEOUT (220 * 8) // 1760 as in v1.9 (180 ms)
// HT3/Junkers - Time to send one Byte (8 Bits, 1 Start Bit, 1 Stop Bit) plus 7 bit delay. The -8 is for lag compensation.
// since we use a faster processor the lag is negligible