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nekromant / esp8266-frankenstein

Alternative firmware for ESP8266 modules
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Vdd command seems unstable #66

Closed darkbyte-ru closed 9 years ago

darkbyte-ru commented 9 years ago

New command "vdd" return strange values:

frankenstein > vdd
VDD3V3 = 3430 mV

But esp powered by LiIon battery through AMS1117 regulator, and multimeter show 3.286 V in module VCC pin.

Also, command crash module randomly (after 1-10 runs).

I try system_get_vdd33 function, but it always return 65535.

nekromant commented 9 years ago

That insect's definitely coming from Espressif's blobbies. The command's mostly undocumented so I'm not sure whether this is raw adc value or actual mV (mV was a blind guess).

darkbyte-ru commented 9 years ago

Yep, I understand. What about reading vdd for others?

susisstrolch commented 9 years ago

Maybe I'm still with the old SDK... How do I update the SDK in antares build system?

On 03/25/2015 03:30 PM, DarkByte wrote:

Yep, I understand. What about reading vdd for others?

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86051041.

darkbyte-ru commented 9 years ago

@susisstrolch, 

cd where/is/src/esp-open-sdk
make clean
git pull
git submodule update
make STANDALONE=y
susisstrolch commented 9 years ago

Here the result (SDK1.0 based):

frankenstein > vdd VDD3V3 = 98 mV

frankenstein > vdd VDD3V3 = 98 mV

frankenstein > vdd

ets Jan 8 2013,rst cause:4, boot mode:(1,7)

wdt reset

On 03/25/2015 03:30 PM, DarkByte wrote:

Yep, I understand. What about reading vdd for others?

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86051041.

nekromant commented 9 years ago

@susisstrolch There's something bad and broken about 1.0 SDK, and I can't (yet) figure out what, Meanwhile, on my hardware, 1.0 SDK: 

frankenstein > vdd
VDD3V3 = 3414 mV

And looks stable after a dozen invocations

susisstrolch commented 9 years ago

No worry... just for the files: running "vdd" via serial console reboots after approx 2-3 tries. In contrast, running vdd in a telnet session doesn't reboot the esp, but shows approx. 84mV...

On 03/25/2015 06:33 PM, Andrew wrote:

@susisstrolch https://github.com/susisstrolch There's something bad and broken about 1.0 SDK, and I can't (yet) figure out what,

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86134241.

nekromant commented 9 years ago

And it gets weirder and weirder. My module shows the same voltage over telnet as it does via serial. Though I did manage to get one crash and reboot while running this command.

nekromant commented 9 years ago

@susisstrolch Try the current master. Since I can barely reproduce it on my hardware - see if this hack helps.

susisstrolch commented 9 years ago

no wdt reset after lots of vdd readouts. Readout toggling between 114mV and 115mV.

Maybe a speciality of my dev board...

On 03/25/2015 06:53 PM, Andrew wrote:

@susisstrolch https://github.com/susisstrolch Try the current master. Since I can barely reproduce it on my hardware - see if this hack helps.

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86147964.

nekromant commented 9 years ago

@susisstrolch Hm, I'm not really sure where this vdd is being sampled from. May be it's some pin that's not wired on your board

d-a-v commented 9 years ago

Have you tried TOUT pin and adc command ? It seems stable and seems to measure mV with no conversion 1.024V max. The measurement itself is not really stable at 10bits but it is worth trying.

Le 25 mars 2015 19:44:37 Andrew notifications@github.com a écrit :

@susisstrolch Hm, I'm not really sure where this vdd is being sampled from. May be it's some pin that's not wired.

Reply to this email directly or view it on GitHub: https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86167330

nekromant commented 9 years ago

@d-a-v They're not wired out on my modules. I only have access to RST, RX, TX, GPIO0, GPIO2

susisstrolch commented 9 years ago

Short summary from talk with espressif: As soon as TOUT isn't left open, the "read_vdd33" will not return any meaningfull result. My board has TOUT connected to a LDR/resistor divider, so I'll never see the real Vdd.

On 03/26/2015 12:43 AM, david gauchard wrote:

Have you tried TOUT pin and adc command ? It seems stable and seems to measure mV with no conversion 1.024V max. The measurement itself is not really stable at 10bits but it is worth trying.

Le 25 mars 2015 19:44:37 Andrew notifications@github.com a écrit :

@susisstrolch Hm, I'm not really sure where this vdd is being sampled from. May be it's some pin that's not wired.

Reply to this email directly or view it on GitHub:

https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86167330

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86254224.

nekromant commented 9 years ago

@susisstrolch Thanks! I guess we can close this issue now.

susisstrolch commented 9 years ago

send you a pm to your contact address...

On 03/26/2015 02:03 PM, Andrew wrote:

Closed #66 https://github.com/nekromant/esp8266-frankenstein/issues/66.

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#event-265821877.

darkbyte-ru commented 9 years ago

That is strange. I test read_vdd33 on esp-01 board and it seems that TOUT not wired to anything.

Also, I discovered, that chip crashes only in AP mode and work ok in APSTA.

susisstrolch commented 9 years ago

Thats exactly the case where read_vdd33 is supposed to work. According to Espressif (NDA info), read_vdd33 only works if TOUT is floating. As soon as it's connected (like mine - to an R-LDR divider) it will show you complete different values - probably the voltage itself. Espressifs explanation is a bit complicate and lengthy - and I still don't understand all implications.

On 03/27/2015 02:02 PM, DarkByte wrote:

That is strange. I test read_vdd33 on esp-01 board and it seems that TOUT not wired to anything.

Also, I discovered, that chip crashes only in AP mode and work ok in APSTA.

— Reply to this email directly or view it on GitHub https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86933760.

d-a-v commented 9 years ago

update, vdd seems to be working (esp-01 with TOUT soldered out), and valid only if TOUT is floating. (no more reset)

I am on SDK 1.0.0 synchronized with master (at the time of writing) which was not the case on my previous message above.

TOUT floating: frankenstein > vdd VDD3V3 = 3413 mV frankenstein > vdd VDD3V3 = 3415 mV

TOUT to GND: frankenstein > vdd VDD3V3 = 15 mV frankenstein > vdd VDD3V3 = 16 mV frankenstein > adc 3 frankenstein > vdd VDD3V3 = 16 mV frankenstein > vdd VDD3V3 = 16 mV

TOUT to 3.3V: frankenstein > vdd VDD3V3 = 4094 mV frankenstein > adc 1024

TOUT floating: frankenstein > vdd VDD3V3 = 3422 mV frankenstein > adc 1024 frankenstein > adc 1024 frankenstein > adc 1024 frankenstein > adc 0 frankenstein > vdd VDD3V3 = 3414 mV

nekromant commented 9 years ago

@d-a-v I'm not sure TOUT can handle 3.3v correctly. In your case your adc values are all maxed out. Can you try with something like 250mV 500mV, 1V?

d-a-v commented 9 years ago

On ven., mars 27, 2015 at 07:28:55 -0700, Andrew wrote:

@d-a-v I'm not sure TOT can handle 3.3v correctly. In your case your adc values are all maxed out. Can you try with something like 250mV 500mV, 1V?

It cannot, you are right.

TOUT seems to give mV (1024 would then be 1.024V although I'm not sure whether it is 1.000V or 1.024V).

It is stuck at 1024 with above voltage (I did try not feed it with more than 3.3v).

Reply to this email directly or view it on GitHub: https://github.com/nekromant/esp8266-frankenstein/issues/66#issuecomment-86957752