MicroPython Forum (Archive)

Found a post about bits vs bytes when determining flash size. It appears that --flash_size=32m finally worked (which is 4MBytes). I still cannot figure out why, because my 16MBytes of flash are equal to 128Mbits, which is not an available option in esptool. I don't know what will happen to the 12MBy...

Thanks, now I see some output, looks like it's looping in boot? At 74800 serial port displays in fast loop the following: load 0x40100000, len 32028, room 16 tail 12 checksum 0x40 ho 0 tail 12 room 4 load 0x3ffe8000, len 1092, room 12 tail 8 checksum 0x17 load 0x3ffe8450, len 3000, room 0 tail 8 che...

I reverted to python 2.7 - just in case. I tried a nodeMCU image, also tried NodeMCU pyflasher. Tried qio instead of dio as flash_mode. All with the same outcome. There was one point, when, during a NodeMCU pyflasher session I got impatient and connected to the serial port with putty. I got a messag...

Thank you for getting back to me so fast. I erased the flash every time before attempting to flash something. Based on my last try, flashing was successful, at least verification says so. COM6 is still the port of the device, checked in device manager, and also this is the port that esptool connects...

Read up on some troubleshooting on esptool wiki, and found that I have to add flash_mode dio option for verification: python esptool.py -p COM6 verify_flash --flash_size=16m --flash_mode dio 0 esp8266-20170108-v1.8.7.bin Now it's verifying correctly: esptool.py v1.3 Connecting.... Running Cesanta fl...

I got into some trouble installing micro python to a board that is allegedly a Wemos D1 Pro. When I connected to it through USB, a factory default application was outputting the available WiFi networks in a loop, so something was working. I'm using 32 bit python 3.6 on a 64 bit Windows 10 laptop. I ...