Program using USB cable #3
Comments
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Thank you for this information. I just tested the same and it works (although as I did not have a USB-A to USB-A cable I soldered a micro usb to the underside exposed pins). I'll update the README with your commentary. The micro usb does not seem to connect to GPIO's 19 and 20 of the ESP32-S2 at all, so I don't think that can ever be used for programming. I think it's only useful for powering the device.
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"Hello, can you help me? I managed to put the circuit in download mode and upload some programs, but I've noticed that the serial port only works in download mode. When I try to use serial communication with my PC while the program is running, it doesn't work; it only works in download mode. However, the program doesn't run in download mode." |
When compiling you need to enable USB_CDC and then the serial output should be directed to the USB device. I have updated the platformio.ini in this GitHub repository to fix this. However, if you use Arduino you need to Enable "USB CDC On Boot". |
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Are you guys having really slow flashing speeds? EDIT. I solved by changing the FLASH chip. esptool.py v4.5.1 Leaving... |
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Hi me again is posible make it work with 4 panels in gruop of (2X2)?? |
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VirtualMatrix class does that? Please look at the DMA library documentation. |
Great work; I was able to use your example code without issue but I wanted to share that it's possible to program this board without soldering on the FTDI serial programmer, instead I was able to use the USB-A port.
To put the board into Download mode, I simply bridged the 2 pads near the MicroUSB port, then plugged the board into my PC using a USB A to A cable. It should be possible to program the board using the MicroUSB port in the same way, but I was not able to achieve this and used the A to A cable instead.
My board is rev 7.0.1-1 and it comes with an ESP32-S2 with 4MB flash and no PS Ram.
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