But I have issues downloading code to the boards. It fails with "Serial data stream stopped: Possible serial noise or corruption."
This is boards that I have programmed hundreds of times with the Flash Download Tool or directly from the ESP plugin in Eclipse.
Without EVER having a similar fault.
The odd thing is that its only download to Flash that fails. Download to RAM, or the "Erase" function works just fine.
Also, trying to use the Flash Download Tool to download the RF Test binary to the specified address 0x1000, result in a printout of "mmu set" messages or nothing at all. It varies between different board designs.
All boards use the ESP32-U4WHD.
I have tried 3 different boards of very different designs and the results a similar. The RF Tools just don't download correctly.
And, I have of course tried various download speeds from 9600 to 921600. Same, same.
Normally, I download at 921600 with Flash Download tool or from Eclipse. No problem.
What the hey is going on? Why these errors when downloading to flash?
And why does the code not run when using the Flash Download Tool?
- ESPRFTestTool Failed.png (237.53 KiB) Viewed 1310 times
- DownloadTool Failed.png (177.36 KiB) Viewed 1310 times
- DownloadTool Ok to RAM.png (146.08 KiB) Viewed 1310 times