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Fix exception 9 when modbus tx enable is used

This commit is contained in:
Theo Arends 2022-12-28 15:19:09 +01:00
parent 2e1f8fd756
commit c1484f761c
2 changed files with 6 additions and 7 deletions
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2
lib/default/TasmotaSerial-3.6.0/src/TasmotaSerial.cpp
View File

@ -460,7 +460,7 @@ size_t TasmotaSerial::write(uint8_t b) {
size = 1; size = 1;
} }
if (m_tx_enable_pin > -1) { if (m_tx_enable_pin > -1) {
delay(1); delayMicroseconds(800); // delay(1) will exception here
digitalWrite(m_tx_enable_pin, LOW); digitalWrite(m_tx_enable_pin, LOW);
} }
return size; return size;

11
lib/lib_basic/TasmotaModbus-3.6.0/src/TasmotaModbus.cpp
View File

@ -31,11 +31,6 @@ TasmotaModbus::TasmotaModbus(int receive_pin, int transmit_pin, int tx_enable_pi
{ {
// setTransmitEnablePin(tx_enable_pin); // setTransmitEnablePin(tx_enable_pin);
mb_tx_enable_pin = tx_enable_pin; mb_tx_enable_pin = tx_enable_pin;
if (mb_tx_enable_pin > -1) {
pinMode(mb_tx_enable_pin, OUTPUT);
digitalWrite(mb_tx_enable_pin, LOW);
}
mb_address = 0; mb_address = 0;
} }
@ -64,6 +59,10 @@ int TasmotaModbus::Begin(long speed, uint32_t config)
if (begin(speed, config)) { if (begin(speed, config)) {
result = 1; result = 1;
if (hardwareSerial()) { result = 2; } if (hardwareSerial()) { result = 2; }
if (mb_tx_enable_pin > -1) {
pinMode(mb_tx_enable_pin, OUTPUT);
digitalWrite(mb_tx_enable_pin, LOW);
}
} }
return result; return result;
} }
@ -161,7 +160,7 @@ uint8_t TasmotaModbus::Send(uint8_t device_address, uint8_t function_code, uint1
} }
write(frame, framepointer); write(frame, framepointer);
if (mb_tx_enable_pin > -1) { if (mb_tx_enable_pin > -1) {
delay(1); delayMicroseconds(800); // delay(1) will exception here
digitalWrite(mb_tx_enable_pin, LOW); digitalWrite(mb_tx_enable_pin, LOW);
} }
free(frame); free(frame);