ESP8266 Community Forum

- Thu Dec 18, 2014 12:51 pm #5091 I'm working on a project that (hopefully) will be able to use Shift Registers as PWM outputs. I was bitbanging last night on an ESP-01 just to test my code and stuff, and decided to switch to the HSPI bus since it will be magnitudes faster. So I got one of my ESP-03's and made a breakout for it. I successfully uploaded the blink2 test program, and then decided to move to my actual code. For some reason, now I can't upload code to it. I can still run the blink code on there and serial is working fine, it even will go into the serial upload mode, but all the methods of flashing fail to connect to it. I have tried every wiring scheme i have seen (>5), restarted my computer, everything. I figured I would post on here to see if anyone else has had this issue

Here's the output normally:

Code: Select all ets Jan  8 2013,rst cause:1, boot mode:(3,6)

load 0x40100000, len 23632, room 16
tail 0
chksum 0x55
load 0x3ffe8000, len 2696, room 8
tail 0
chksum 0x62
load 0x3ffe8a90, len 3328, room 8
tail 8
chksum 0xf9
csum 0xf9

SDK ver: 0.9.3 compiled @ Nov 21 2014 11:15:48
phy ver: 273, pp ver: 5

mode : softAP(1a:fe:34:9e:60:57)
dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1)
add if1
bcn 100



Here's with GPIO0 tied to ground for serial upload:

Code: Select all ets Jan  8 2013,rst cause:1, boot mode:(1,7)




- Sun Dec 21, 2014 3:42 pm #5348 Did you tie gpio15 to GND

This was a gotya for me, when moving from 01 to 03

Btw. Double check its GPIO15, as I don't have the information to hand, but if you search esp03 gpio15 you will get a lot of useful results;-)