Unable to flash software

Oliv4945 / eink

Fork of Sprite_tm E-Ink ESP8266 project. Sanitized and updated to compile with current tools (01/2017)

https://spritesmods.com/?art=einkdisplay

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Unable to flash software #1

Closed JeroenVanHautte closed 7 years ago

JeroenVanHautte commented 7 years ago

Hi there! We recently built the PCB as designed by spritesmod. I ran your script without errors on a ubuntu VM, but I'm experiencing some trouble with the "make flash" command. My device is not able to find the ESP-12 module or flash to it.

Is there a way to do this using a VM (in virtualbox)? Do we need to connect the battery or is the usb connection enough? Would you be willing to assist us in getting our setup working? Please contact me at jeroen.vanhautte@ugent.be.

Thanks in advance, Jeroen

Oliv4945 commented 7 years ago

Hi,

If you are using ESP-12 alone, you should change the L31 of the Makefile to None, and do the reset to bootloader sequence by yourself.

I did not study Sprite_tm schematics but USB connection should be enough.

JeroenVanHautte commented 7 years ago

Hi there! I managed to use your tools to flash everything needed, but it's not working very well:

In the case of booting after power loss:
1. Loading the image seems to work
2. Displaying it does nothing except wipe the connected eink screen
In the case of a reset
1. A fatal exception occurs after about 10.5s.
In both cases:
1. At first the AP is online
2. When trying to connect, the system crashes

Almost all of the crashes seem to have a cause 4. Any thoughts on this?

Kind regards, Jeroen

JeroenVanHautte commented 7 years ago

We finally found the issue: flashing worked perfectly, but the peak current usage was higher than our supply could manage (220mA instead of 170 mA). This caused the fatal exceptions.