Newbie
Joined: 18/08/2020
Location: United StatesPosts: 13
| Posted: 12:13am 27 Oct 2024 |
Good day.
It's been a good long while since I last posted anything here, but I recently got back on the CMM2, and have been enjoying it once again.
With some interest from co-workers, I recently had a small batch of G2: V2.1 boards from the files linked in Peter's post of 10 July 2024. They arrived from the fab house, and all appears to be working as designed. In the interest of completeness, I am kitting these boards out with the batteries, jumper, SD card, and an ESP-01 module for wifi communications.
...and that's where I'm currently a bit stuck.
I got a bunch of ESP-01 modules, flashed them with the Zimodem firmware (v3.4), and confirmed that this was working by visiting telnet BBSes on my desktop machine via the wifi modules. Plugging the modules into the CMM2 board, I get a red power LED to indicate the module is receiving power.
Unfortunately, that's where it stops.
I load up MaxiTerm on the CMM2, and I can get no response from the ESP-01 modules - not even a response from just an AT command. I have confirmed the communication parameters and speed settings, and am seeing no response from the module's activity LED to indicate that it is receiving any data from the CMM2.
Looking at the schematics for the G2 board, it appears that the ESP01 header is connected to the COM2 port. I get no response from the module regardless of the port I tell MaxiTerm to use.
Am I missing something? I have tried setting MaxiTerm to all different port numbers, and various speeds, but am seeing no response at all from the modules.
At this point, I'm not sure what I'm doing wrong.
Right now the ESP-01 functionality is the last hurdle for me to get over in order to have fully-functional units.