ESP8266 Community Forum

- Thu Apr 28, 2016 5:28 am #46383 Hi

I'm using sucessfully ESP-01 and ESP-12 but i didn't managed to run ESP -03 model. My wiring:
GPIO15 - pull down (10k)
GPIO0 - pull down (10k)
GPIO2 - pull up (10k)
CH_PD - pull up (2,2k)
100nF cap between VCC and GND
Power goes though USB-UART CP2102 adapter, I also used 1A 3,3V power supply, no luck.




I get this bootloader errors (74880 baudrate): http://pastebin.com/AJkrKWh5 and after those errors at 115200 baudrate:

Ai-Thinker Technology Co. Ltd.

ready


It doesn't respond to AT commands, nor flashnig new firmware. Year ago i also coulndn't run it I gave up and moved to esp-12. Now i need the smallest board, so I'm trying to run this thing again. Is there anyone who managed to get this working? This is the 2nd board I'm trying to run.

- Thu Apr 28, 2016 7:56 am #46388

GPIO0 - pull down (10k)

GPIO0 should be HIGH for normal Execution mode, when LOW, it is going into Flash Upload mode.

- Thu Apr 28, 2016 8:17 am #46391 This is a new chip, I just plugged it in. The problem is I want to flash my esp with new firmware or jus upload simple sktech from arduino/eclipse but I can't communicate with it. So I suppose GPIO0 should be low. Since there is no code to execute, in boot from flash mode it floods me with fatal exceptions

Code: Select allFatal exception (28):
epc1=0x40001800, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00007ff0, depc=0x00000000