ESP8266 Community Forum

- Tue Dec 20, 2016 4:26 am #59728 Hello guys,

I've got a ESP-12S module, and I can't upload my arduino firmware to it. The esptool.py did connected to it successfully but it was somehow interrupted by errors while it was writting data into the flash.

I made my base board for the ESP module by myself, and in case someone need for when helping me to debug (great thanks ), here is the Eagle project file on Github: https://github.com/huming2207/Jasmine-hardware By the way I've made a mistake in the schematic. I've forgotten to add a pull-down resistor for GPIO15 and I've corrected when I soldering my module to my base board.

Here is the output from Arduino IDE:

Code: Select allSketch uses 224,133 bytes (21%) of program storage space. Maximum is 1,044,464 bytes.
Global variables use 31,676 bytes (38%) of dynamic memory, leaving 50,244 bytes for local variables. Maximum is 81,920 bytes.
/Users/Jackson/Library/Arduino15/packages/esp8266/tools/esptool/0.4.9/esptool -vv -cd ck -cb 115200 -cp /dev/cu.SLAB_USBtoUART -ca 0x00000 -cf /var/folders/fn/q_bqjgkd3y741hxbk3z6hpnm0000gn/T/buildadd7ba696176d0edd5e7690c3e719dcd.tmp/sketch_dec20a.ino.bin
esptool v0.4.9 - (c) 2014 Ch. Klippel <ck@atelier-klippel.de>
   setting board to ck
   setting baudrate from 115200 to 115200
   setting port from /dev/tty.usbserial to /dev/cu.SLAB_USBtoUART
   setting address from 0x00000000 to 0x00000000
   espcomm_upload_file
   espcomm_upload_mem
opening port /dev/cu.SLAB_USBtoUART at 115200
   tcgetattr
   tcsetattr
   serial open
opening bootloader
resetting board
trying to connect
   espcomm_send_command: sending command header
   espcomm_send_command: sending command payload
trying to connect
   espcomm_send_command: sending command header
   espcomm_send_command: sending command payload
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
   espcomm_send_command: receiving 2 bytes of data
Uploading 228288 bytes from /var/folders/fn/q_bqjgkd3y741hxbk3z6hpnm0000gn/T/buildadd7ba696176d0edd5e7690c3e719dcd.tmp/sketch_dec20a.ino.bin to flash at 0x00000000
   erasing flash
   size: 037bc0 address: 000000
   first_sector_index: 0
   total_sector_count: 56
   head_sector_count: 16
   adjusted_sector_count: 40
   erase_size: 028000
   espcomm_send_command: sending command header
   espcomm_send_command: sending command payload
   setting timeout 15000
   setting timeout 100
   espcomm_send_command: receiving 2 bytes of data
   writing flash
................................   serialport_receive_C0: 00 instead of C0
warning: espcomm_send_command: didn't receive command response
warning: espcomm_send_command(FLASH_DOWNLOAD_DATA) failed
warning: espcomm_send_command: didn't receive command response
closing bootloader
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed



Here is my module, I've bought it from Ai-Thinker's official store, not the clones: https://item.taobao.com/item.htm?id=536873562220

Anyone who have any ideas for my issue? Thanks in advance!

Regards,
Jackson

- Fri Dec 23, 2016 7:09 pm #59896 @Jackson;

I am a happy camper with the under $4 USD for the NodeMCU boards. And smaller boards with serialist exist too.

Usually the problem with uploading to a breadboard is noise. Every wire is a little antenna picking up power line hum. Also, the USB-serial you are using is grounded to the PC and if the ESP8266 is using a wall-wart power brick... well you could have a ground loop, too.

Build a well filtered power supply, I use the DC-DC modules ... 6V in and 3.3@ 1A out. I use quality caps: tantalum. I bypass all power feed points. All breadboard jumpers are solid wire cut to exact length - no big loops of cheap pin-jumpers! Using these techniques, the breadboarded modules are as stable as the NodeMCU.

Ray