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merged Tx Delay https://github.com/proddy/EMS-ESP/pull/113

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proddy
2019-05-21 23:50:47 +02:00
parent fae9f2a8af
commit f9c5cb9dca
5 changed files with 37 additions and 36 deletions
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2
CHANGELOG.md
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@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### Changed
- Improved Tx code, by @Susis Strolch [(pull request 113)](https://github.com/proddy/EMS-ESP/pull/113). Use `set_txdelay 2`
## [1.7.0] 2019-05-11
### Added

2
src/ems.cpp
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@@ -687,7 +687,7 @@ void _ems_readTelegram(uint8_t * telegram, uint8_t length) {
_last_emsPollFrequency = EMS_RxTelegram.timestamp;
// check first for a Poll for us
if (value == (EMS_ID_ME | 0x80)) {
if ((value & 0x7F) == EMS_ID_ME) {
EMS_Sys_Status.emsTxCapable = true;
// do we have something to send thats waiting in the Tx queue?

57
src/emsuart.cpp
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@@ -113,7 +113,7 @@ void ICACHE_FLASH_ATTR emsuart_init() {
// UCTOT = RX TimeOut Threshold (7bit) = want this when no more data after 2 characters. (default is 2)
// UCFFT = RX FIFO Full Threshold (7 bit) = want this to be 31 for 32 bytes of buffer. (default was 127).
// see https://www.espressif.com/sites/default/files/documentation/esp8266-technical_reference_en.pdf
USC1(EMSUART_UART) = 0; // reset config first
USC1(EMSUART_UART) = 0; // reset config first
USC1(EMSUART_UART) = (EMS_MAX_TELEGRAM_LENGTH << UCFFT) | (0x02 << UCTOT) | (1 << UCTOE); // enable interupts
// set interrupts for triggers
@@ -130,10 +130,10 @@ void ICACHE_FLASH_ATTR emsuart_init() {
// disable esp debug which will go to Tx and mess up the line
system_set_os_print(0); // https://github.com/espruino/Espruino/issues/655
// swap Rx and Tx pins to use GPIO13 (D7) and GPIO15 (D8) respectively
#ifndef NO_UART_SWAP
// swap Rx and Tx pins to use GPIO13 (D7) and GPIO15 (D8) respectively
#ifndef NO_UART_SWAP
system_uart_swap();
#endif
#endif
ETS_UART_INTR_ATTACH(emsuart_rx_intr_handler, NULL);
ETS_UART_INTR_ENABLE();
@@ -181,11 +181,11 @@ void ICACHE_FLASH_ATTR emsuart_tx_brk() {
* set loopback mode and clear Tx/Rx FIFO
*/
static inline void ICACHE_FLASH_ATTR emsuart_loopback(boolean enable) {
uint32_t tmp = (1 << UCLBE); // Loopback mask
uint32_t tmp = (1 << UCLBE); // Loopback mask
if (enable)
USC0(EMSUART_UART) |= (tmp); // enable loopback
USC0(EMSUART_UART) |= (tmp); // enable loopback
else
USC0(EMSUART_UART) &= ~(tmp); // disable loopback
USC0(EMSUART_UART) &= ~(tmp); // disable loopback
}
/*
@@ -195,28 +195,28 @@ void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
uint32_t tmp;
// backward compatibility
if (EMS_Sys_Status.emsTxDelay<2) {
if (EMS_Sys_Status.emsTxDelay < 2) {
for (uint8_t i = 0; i < len; i++) {
USF(EMSUART_UART) = buf[i];
// check if we need to force a delay to slow down Tx
// https://github.com/proddy/EMS-ESP/issues/23#
if (EMS_Sys_Status.emsTxDelay==1) {
if (EMS_Sys_Status.emsTxDelay == 1) {
delayMicroseconds(EMS_TX_BRK_WAIT);
}
}
emsuart_tx_brk(); // send <BRK>
} else {
// smart Tx
#define UART_BIT_TIME 104 // bit time @9600 baud
// smart Tx
#define UART_BIT_TIME 104 // bit time @9600 baud
ETS_UART_INTR_DISABLE(); // disable rx interrupt
ETS_UART_INTR_DISABLE(); // disable rx interrupt
emsuart_flush_fifos();
emsuart_loopback(true); // reset FIFOs & enable loopback
emsuart_loopback(true); // reset FIFOs & enable loopback
for (uint8_t i = 0; i < len; i++) {
USF(EMSUART_UART) = buf[i]; // send byte
delayMicroseconds(10*UART_BIT_TIME);
USF(EMSUART_UART) = buf[i]; // send byte
delayMicroseconds(10 * UART_BIT_TIME);
/* wait until
* ° loopback char is received
@@ -225,29 +225,28 @@ void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
* ° Break detected (bus collision) - not handled now...
*/
for (uint8_t l = 0; l < 13; l++) {
if (((USS(EMSUART_UART) >> USRXC) & 0xFF)
|| (U0IS & ((1 << UIFF) | (1 << UITO) | (1 << UIBD))))
if (((USS(EMSUART_UART) >> USRXC) & 0xFF) || (U0IS & ((1 << UIFF) | (1 << UITO) | (1 << UIBD))))
break;
delayMicroseconds(UART_BIT_TIME / 8); // ~13µs
delayMicroseconds(UART_BIT_TIME / 8); // ~13µs
}
uint32_t break_detect = (U0IS & (1 << UIBD)); // keep break detect interrupt
(void) (USF(EMSUART_UART)); // read out fifo, also clears FIFO counter
U0IC = (1 << UIFF) | (1 << UITO) | (1 << UIBD); // clear pending interrupts
uint32_t break_detect = (U0IS & (1 << UIBD)); // keep break detect interrupt
(void)(USF(EMSUART_UART)); // read out fifo, also clears FIFO counter
U0IC = (1 << UIFF) | (1 << UITO) | (1 << UIBD); // clear pending interrupts
if (break_detect)
break; // collision / abort from master
break; // collision / abort from master
}
// send <BRK> - wait until <BRK> detect
USC0(EMSUART_UART) |= (1 << UCBRK); // send <BRK>
USC0(EMSUART_UART) |= (1 << UCBRK); // send <BRK>
while (!(U0IS & (1 << UIBD)))
delayMicroseconds(UART_BIT_TIME / 8); // ~13µs
USC0(EMSUART_UART) &= ~(1 << UCBRK); // clear <BRK>
delayMicroseconds(UART_BIT_TIME / 8); // ~13µs
USC0(EMSUART_UART) &= ~(1 << UCBRK); // clear <BRK>
U0IC = (1 << UIFF) | (1 << UITO) | (1 << UIBD); // clear pending interrupts
U0IC = (1 << UIFF) | (1 << UITO) | (1 << UIBD); // clear pending interrupts
emsuart_flush_fifos();
emsuart_loopback(false); // disable loopback mode
ETS_UART_INTR_ENABLE(); // enable rx interrupt
emsuart_loopback(false); // disable loopback mode
ETS_UART_INTR_ENABLE(); // enable rx interrupt
}
}
@@ -256,5 +255,5 @@ void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len) {
*/
void ICACHE_FLASH_ATTR emsuart_tx_poll() {
static uint8_t buf[] = {EMS_ID_ME};
emsuart_tx_buffer(buf,1);
emsuart_tx_buffer(buf, 1);
}

4
src/emsuart.h
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@@ -13,8 +13,8 @@
#define EMSUART_CONFIG 0x1C // 8N1 (8 bits, no stop bits, 1 parity)
#define EMSUART_BAUD 9600 // uart baud rate for the EMS circuit
#define EMS_MAXBUFFERS 10 // 4 buffers for circular filling to avoid collisions
#define EMS_MAXBUFFERSIZE 32 // max size of the buffer. packets are max 32 bytes
#define EMS_MAXBUFFERS 10 // 4 buffers for circular filling to avoid collisions
#define EMS_MAXBUFFERSIZE 32 // max size of the buffer. packets are max 32 bytes
// this is how long we drop the Tx signal to create a 11-bit Break of zeros (BRK)
// At 9600 baud, 11 bits will be 1144 microseconds

2
src/version.h
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@@ -6,5 +6,5 @@
#pragma once
#define APP_NAME "EMS-ESP"
#define APP_VERSION "1.8.0b1"
#define APP_VERSION "1.8.0b2"
#define APP_HOSTNAME "ems-esp"