I'm trying to use ADC_MODE to read voltage on an ESP-07.
I have a working sketch but as soon as I add this instruction - ADC_MODE(ADC_VCC) - at the very top of it, the ESP starts throwing exceptions:
Exception (0):
epc1=0x4022fc20 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000
ctx: sys
sp: 3ffff810 end: 3fffffb0 offset: 01a0
>>>stack>>>
3ffff9b0: 00000138 00000138 00000006 00000001
3ffff9c0: 00000138 00000000 00000002 40006784
3ffff9d0: 00000001 3ffeea48 6f75797d 4022676b
3ffff9e0: 00000000 402300ec 00000000 3ffeea48
3ffff9f0: 00000006 00000001 00000004 00000000
3ffffa00: 1d1a1812 19161310 00000000 00000000
3ffffa10: 00003045 4022dc2c 00000000 402317d0
3ffffa20: 00000bf0 402317e5 3ffeea48 00000001
3ffffa30: 3ffeeb9a 3ffeea58 00000001 00000003
3ffffa40: 3ffeea48 60000600 60000200 00000000
3ffffa50: 4022d4d3 00000000 00000001 3ffeeb9a
3ffffa60: 40105dbe 60000e00 07c107c1 07c10001
3ffffa70: 402324e8 05070307 02030102 fe92130c
3ffffa80: 00000000 b2000778 405ccf7f 05fe120f
3ffffa90: 00000000 0000689e 3fff050c 40227d57
3ffffaa0: 3ffee5ae 60000e00 3ffee58c 3ffee5ae
3ffffab0: 00000001 00000001 00000000 ffff0000
3ffffac0: 40228633 3fff050c ffffffff 402285db
3ffffad0: 3fff04ec 00001000 40104bca 0000007d
3ffffae0: 000000ed 00000020 3fffff10 00000000
3ffffaf0: 3fff058c 00000000 00000003 47214850
3ffffb00: ffffffff ffffffff ffff0002 00000000
3ffffb10: 00000000 00000000 00000000 00000000
3ffffb20: 00000000 00000000 00000000 00000000
3ffffb30: ffffffff 00ffffff 00000000 00000000
3ffffb40: 00000000 00000000 00000000 00000000
3ffffb50: 00000000 00000000 00000000 00000000
3ffffb60: 00000000 00000000 00000000 00000000
3ffffb70: 00000000 ff000000 ffffffff ffffffff
3ffffb80: ffffffff ffffffff ffffffff ffffffff
3ffffb90: ffffffff ffffffff ffffffff ffffffff
3ffffba0: ffffffff ffffffff ffff00ff ffffffff
3ffffbb0: 0000000a 5f505345 38373730 00003034
3ffffbc0: 00000000 00000000 00000000 00000000
3ffffbd0: 00000000 00000000 00000000 00000000
3ffffbe0: 00000000 00000000 00000000 00000000
3ffffbf0: 00000000 00000000 00000000 00000000
3ffffc00: 00000000 00000000 00000000 00000000
3ffffc10: 00000000 ffffffff ffffffff ffffffff
3ffffc20: ffffffff ffffffff ffffffff ffffffff
3ffffc30: ffffffff 000001ff ffffff04 ffffff01
3ffffc40: ffffffff ffffffff ffffffff ffffffff
3ffffc50: ffffffff ffffffff ffffffff ffffffff
3ffffc60: ffffffff ffffffff ffffffff ffffffff
3ffffc70: ffffffff ffffffff ffffffff ffffffff
3ffffc80: ffffffff ffffffff ffffffff ffffffff
3ffffc90: ffffffff ffffffff ffffffff ffffffff
3ffffca0: ffffffff ffffffff ffffffff ffffffff
3ffffcb0: ffffffff 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 00000003 ffffffff ffffffff
3ffffe50: ffffffff ffffffff ffffffff ffffffff
3ffffe60: ffffffff ffffffff ffffffff ffff0064
3ffffe70: 00000000 00000000 ffffffff ffffffff
3ffffe80: ffffffff ffffffff 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 ffffffff ffffffff ffffffff
3fffff00: ffffffff ffffffff ffffffff ffffffff
3fffff10: ffffffff 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: cf5cffff 4078077f ffff0081 bd57ece9
3fffffa0: 000001e9 1f9da098 ffffff01 55aa55aa
<<<stack<<<
which translates into:
Exception 0: Illegal instruction
Decoding 14 results
0x4022fc20: tx_pwctrl_init_cal at ?? line ?
0x4022676b: pm_enable_gpio_wakeup at ?? line ?
0x402300ec: tx_pwctrl_init at ?? line ?
0x4022dc2c: txpwr_offset at ?? line ?
0x402317d0: chip_v6_initialize_bb at ?? line ?
0x402317e5: chip_v6_initialize_bb at ?? line ?
0x4022d4d3: phy_init at ?? line ?
0x40105dbe: register_phy_ops at ?? line ?
0x402324e8: register_chipv6_phy at ?? line ?
0x40227d57: uart_div_modify at ?? line ?
0x40228633: flash_data_check at ?? line ?
0x402285db: flash_data_check at ?? line ?
0x40104bca: wdt_feed at ?? line ?
Any idea? Is it supposed to work on this model?
Thank you