Search found 2 matches
- Mon May 27, 2024 5:14 pm
- Forum: ESP-IDF
- Topic: Modbus RTU problem with de signal
- Replies: 3
- Views: 1754
Re: Modbus RTU problem with de signal
Hi @ESP_alisytsyn in this project I am using ESP-IDF v5.1.2 communication I run on UART 2. I momentarily coped by using a separate task to control the DE pin. From which version of IDF does this work correctly?
- Sat May 25, 2024 8:54 am
- Forum: ESP-IDF
- Topic: Modbus RTU problem with de signal
- Replies: 3
- Views: 1754
Modbus RTU problem with de signal
I'm using the modbus master example, since I'm having problems with the communication of my device I examined the signals on the TX RX and DE pins. Below you can see that the EN signal goes low before TX finishes transmitting. Logic_KFOZGr5i7a.png How can I fix this? Modbus speed 9600 TX - GPIO23 RX...