Pimoroni esp8266 pHat for Pi Zero
Posted: Tue Feb 02, 2016 4:24 pmI just got one of the esp8266 pHats from Pimoroni:
https://shop.pimoroni.com/collections/r ... p8266-phat
I have a couple of things I want to do with esp8266, but I need to master the basics first and this module looked like a good 'in' for me.
Pimoroni don't seem to have published any details on what the connectivity of the board is and I am a bit stuck. I have been doing some probing and found that GPIO17 is connected to RST and GPIO27 seems to be connected to GPIO0 on the ESP module.
When I toggle GPIO27/GPIO0 to low and reset the esp8266 (AT+RST) it doesn't seem to alter the boot mode, both have the same start up messages. Should I see different output on the UART from the esp8266 when booting with and without GPIO0 low/high?
When I boot I get this:
I was trying to load a prebuild esp-link rom but my esptool command is wrong:
Any ideas what I am doing wrong?
https://shop.pimoroni.com/collections/r ... p8266-phat
I have a couple of things I want to do with esp8266, but I need to master the basics first and this module looked like a good 'in' for me.
Pimoroni don't seem to have published any details on what the connectivity of the board is and I am a bit stuck. I have been doing some probing and found that GPIO17 is connected to RST and GPIO27 seems to be connected to GPIO0 on the ESP module.
When I toggle GPIO27/GPIO0 to low and reset the esp8266 (AT+RST) it doesn't seem to alter the boot mode, both have the same start up messages. Should I see different output on the UART from the esp8266 when booting with and without GPIO0 low/high?
When I boot I get this:
Code: Select all
AT+RST
OK
ets Jan 8 2013,rst cause:2, boot mode:(3,6)
load 0x40100000, len 1396, room 16
tail 4
chksum 0x89
load 0x3ffe8000, len 776, room 4
tail 4
chksum 0xe8
load 0x3ffe8308, len 540, room 4
tail 8
chksum 0xc0
csum 0xc0
2nd boot version : 1.4(b1)
SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size & Map: 8Mbit(512KB+512KB)
jump to run user1 @ 1000
ón't use rtc mem data
s�� �7F÷
Ai-Thinker Technology Co.,Ltd.
ready
I was trying to load a prebuild esp-link rom but my esptool command is wrong:
Code: Select all
esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash -fs 8m -ff 40m 0x00000 boot_v1.5.bin 0x1000 user1.bin 0x7E000 blank.binAny ideas what I am doing wrong?