Search found 4 matches

by modulusmath
Sun Jun 02, 2024 3:49 am
Forum: ESP-IDF
Topic: uart half duplex one line
Replies: 5
Views: 1864

Re: uart half duplex one line

Does this help https://github.com/jouellnyc/UART/blob/ ... /README.md ?

I know it's not the same but it's similar and different :) - and it's micropython.

I basically quickly made a wire a sender and then a receiver via a UART and RS-485
by modulusmath
Sun Jun 02, 2024 3:41 am
Forum: Hardware
Topic: RS-232 Modules are not working with ESP32's
Replies: 4
Views: 2060

Re: RS-232 Modules are not working with ESP32's

You are correct. I fixed that! I think the problem is because I am not using a null cable. I just bought one and will update once it arrives. Thanks! A null modem cable was required. I thought the cable I had was that. To recap: - Esp32 TX (GPIOs remapped above) to TX of each module . - Connect eac...
by modulusmath
Fri May 31, 2024 5:14 pm
Forum: Hardware
Topic: RS-232 Modules are not working with ESP32's
Replies: 4
Views: 2060

Re: RS-232 Modules are not working with ESP32's

You are correct. I fixed that! I think the problem is because I am not using a null cable. I just bought one and will update once it arrives. Thanks!
by modulusmath
Fri May 31, 2024 3:42 am
Forum: Hardware
Topic: RS-232 Modules are not working with ESP32's
Replies: 4
Views: 2060

RS-232 Modules are not working with ESP32's

Howdy, Hello I have two ESP 32 devices and I have successfully connected them to communicate over UARTs using the standard TTL interface with basic dupont jumpers. :D I have next taken the same esp32 devices and then instead I have inserted rs422 to TTL adapters and communication continues to flow p...