i wonder if somebody has already experimented my issue.
I have a ESP07 and upload a program with a FTDI USB converter.
This program works well.
If i supply the ESP07 by a LiOn battery (~4 V) everything is ok.
But if i supply it by a LiFePo4 battery (3.2V), nothing works. I have exception and stack error.
Concerning the program, i try with example programs of the librairy and the problem is the same.
Here are one the stack errors (because i don't have the same issue each time...:
Exception (0):
epc1=0x4022d788 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000
ctx: sys
sp: 3ffff710 end: 3fffffb0 offset: 01a0
>>>stack>>>
3ffff8b0: e49d9e70 d4c77b00 0008e598 8cbb5d85
3ffff8c0: 00000000 00000000 00000001 40006545
3ffff8d0: 00000001 00000000 00000008 3ffff922
3ffff8e0: 400068d5 00000000 00000000 400067bc
3ffff8f0: 00000008 00000000 00000000 00000000
3ffff900: 4022da3d 3ffee328 00000000 40006545
3ffff910: 3ffff923 00000000 00000000 40006545
3ffff920: 00000000 0000000e 00000000 00000000
3ffff930: 00000000 00000000 00000000 00000001
3ffff940: 40227dbf 00000000 00000000 00000000
3ffff950: 00000000 00000008 3ffff972 00000000
3ffff960: 00000000 00000000 00000000 00000000
3ffff970: 00004330 40228314 0000005a 0000005a
3ffff980: 3ffee328 60009a00 3ffee34e 3fff036c
3ffff990: 00000005 00000000 00000000 00000008
3ffff9a0: 00000000 00000000 00000000 00000000
3ffff9b0: 00000000 00000000 402272d8 00000202
3ffff9c0: 00fb00f7 00f800ff 3ffee338 00000001
3ffff9d0: 000000e8 00000000 4022a091 60009a00
3ffff9e0: 3ffee328 60009600 3ffee384 00000000
3ffff9f0: 3fff036c 3ffee34e 3fff0240 0000001d
3ffffa00: 1fffffff 00000006 3ffee328 00000064
3ffffa10: 3fff026c 00000000 00000000 00000000
3ffffa20: 4022a723 3ffee328 3ffee328 00000000
3ffffa30: 3ffee3d4 4022a720 3ffee328 00000000
3ffffa40: 00000000 00000001 60000200 e8d97916
3ffffa50: 40226303 00000000 3ffee328 00000000
3ffffa60: 40105eae 60000e00 00000024 3fffff10
3ffffa70: 4022b47e 3ffffa80 00000008 4021aa0a
3ffffa80: 00000000 00000000 00000083 015ccf7f
3ffffa90: 00000000 b20083f6 00006f80 3fff016c
3ffffaa0: 00000000 40201b39 3fff016c 3fff016c
3ffffab0: 3ffede9e 4022f720 00000001 00000000
3ffffac0: 00000001 3fff016c 000002f4 003fc000
3ffffad0: 4010564a 00000012 3ffede9e 40217593
3ffffae0: 40217c08 60000e00 3fff016c 40217be3
3ffffaf0: 40104e90 000003fd 00000012 60000200
3ffffb00: 3fffff10 d937a188 8918e87c dcc6dd1a
3ffffb10: ffffffff ffffffff ffff0003 00000000
3ffffb20: 3fff1500 00000228 00000001 4021b2ac
3ffffb30: 3fff1584 00000001 3ffe8bb1 402142c8
3ffffb40: 00030503 00010003 243ffe97 a6000000
3ffffb50: ff3ffe89 3cffffff b440104a b8005bf4
3ffffb60: 003fff33 50000000 b83ffeeb 403fff33
3ffffb70: b83fff23 003fff33 ff000000 7cffffff
3ffffb80: 40402033 003fff23 0d884297 c0ed205d
3ffffb90: f2f84e8b 94e75781 964749dd cec1d9be
3ffffba0: 89b463d8 ac95aaf9 ffffffff ffffffff
3ffffbb0: ffffffff ffffffff ffff00ff ffffffff
3ffffbc0: 0000000a 5f505345 36463338 00003130
3ffffbd0: 00000000 00000000 00000000 00000000
3ffffbe0: 00000000 00000000 00000000 00000000
3ffffbf0: 00000000 00000000 00000000 00000000
3ffffc00: 00000000 00000000 00000000 00000000
3ffffc10: 00000000 00000000 00000000 00000000
3ffffc20: 00000000 ffffffff ffffffff ffffffff
3ffffc30: ffffffff ffffffff ffffffff ffffffff
3ffffc40: ffffffff 000001ff ffffff04 ffff0001
3ffffc50: 00000000 3fff1500 00000228 00000001
3ffffc60: 4021b2ac 3fff1584 00000001 3ffe8bb1
3ffffc70: 402142c8 3ffe9700 00000024 3fff89a6
3ffffc80: ffffffff 40104a3c 005bf4b4 3fff33b8
3ffffc90: 00000000 3ffeeb50 3fff33b8 3fff2340
3ffffca0: 3fff33b8 00000000 ffffffff 4020337c
3ffffcb0: 3fff2340 ffffffff ffffffff ffffffff
3ffffcc0: ffffffff ffffffff ffffffff ffffffff
3ffffcd0: ffffffff ffffffff ffffffff ffffffff
3ffffce0: ffffffff ffffffff ffffffff ffffffff
3ffffcf0: ffffffff ffffffff ffffffff ffffffff
3ffffd00: ffffffff ffffffff ffffffff ffffffff
3ffffd10: ffffffff ffffffff ffffffff ffffffff
3ffffd20: ffffffff ffffffff ffffffff ffffffff
3ffffd30: ffffffff ffffffff ffffffff ffffffff
3ffffd40: ffffffff ffffffff ffffffff ffffffff
3ffffd50: ffffffff ffffffff ffffffff ffffffff
3ffffd60: ffffffff ffffffff ffffffff ffffffff
3ffffd70: ffffffff ffffffff ffffffff ffffffff
3ffffd80: ffffffff ffffffff ffffffff ffffffff
3ffffd90: ffffffff ffffffff ffffffff ffffffff
3ffffda0: ffffffff ffffffff ffffffff ffffffff
3ffffdb0: ffffffff ffffffff ffffffff ffffffff
3ffffdc0: ffffffff ffffffff ffffffff ffffffff
3ffffdd0: ffffffff ffffffff ffffffff ffffffff
3ffffde0: ffffffff ffffffff ffffffff ffffffff
3ffffdf0: ffffffff ffffffff ffffffff ffffffff
3ffffe00: ffffffff ffffffff ffffffff ffffffff
3ffffe10: ffffffff ffffffff ffffffff ffffffff
3ffffe20: ffffffff ffffffff ffffffff ffffffff
3ffffe30: ffffffff ffffffff ffffffff ffffffff
3ffffe40: ffffffff 04080000 001c110c 01010000
3ffffe50: ffffffff 00000003 ffffff00 ffffffff
3ffffe60: ffffffff ffffffff ffffffff ffffffff
3ffffe70: ffffffff ffffffff ffffffff ffff0064
3ffffe80: 00000000 00000000 ffffffff ffffffff
3ffffe90: ffffffff ffffffff ffffffff ffffffff
3ffffea0: ffffffff ffffffff ffffffff ffffffff
3ffffeb0: ffffffff ffffffff ffffffff ffffffff
3ffffec0: ffffffff ffffffff ffffffff ffffffff
3ffffed0: ffffffff ffffffff ffffffff ffffffff
3ffffee0: ffffffff ffffffff ffffffff ffffffff
3ffffef0: ffffffff 0d884297 c0ed205d f2f84e8b
3fffff00: 94e75781 964749dd cec1d9be 89b463d8
3fffff10: ac95aaf9 ffffffff ffffffff ffffffff
3fffff20: ffffffff ffffffff ffffffff ffffffff
3fffff30: ffffffff ffffffff ffffffff ffffffff
3fffff40: ffffffff ffffffff ffffffff ffffffff
3fffff50: ffffffff ffffffff ffffffff ffffffff
3fffff60: ffffffff ffffffff ffffffff ffffffff
3fffff70: ffffffff ffffffff ffffffff ffffffff
3fffff80: ffffffff ffffffff ffffffff ffffffff
3fffff90: ffffffff 49073c2f 71493818 19795a08
3fffffa0: 400201e9 19065a20 ffffff00 55aa55aa