- Sun Sep 12, 2021 2:47 am
Flashing with esptool.py write_flash --flash_size 1MB 0x0 boot_v1.7.bin 0x01000 at/512+512/user1.1024.new.2.bin 0xfb000 blank.bin 0xfc000 esp_init_data_default_v08.bin 0xfe000 blank.bin 0x7e000 blank.bin
worked, but AT commands still show no response at all.
I have a second ESP-07 which still has the factory firmware which gives me the following output @74880 baud at boot.
2nd boot version : 1.5
SPI Speed : 40MHz
SPI Mode : QIO
SPI Flash Size & Map: 8Mbit(512KB+512KB)
jump to run user1 @ 1000
My newly flashed ESP-07 shows boot version 1.7 while the other values are the same.
The AT problem is the same as on both of the ESP-07.
I did also flash my ESP-12 with the latest firmware 1.7 and this one has no problems with AT commands.
My suspicion is, that the ESP-07 either have a flash ROM problem beyond 0x1000, which is the jump start address for AT commands, or the clock frequency for AT commands is not within the correct limits.