system_get_vdd33 or ESP.getVcc() always 65535

[tontito]

system_get_vdd33 always return 65535.

void setup()
{
Serial.begin(115200);
Volt = system_get_vdd33();
}

[igrr]

Perhaps your TOUT pin is connected?
See nekromant/esp8266-frankenstein#66 (comment).

[tontito]

I have install nodemcu (SDK 0.9.5) and send command
=node.readvdd33
3614 return
Esp8266 for Arduino (SDK 1.0.1)
system_get_vdd33() return 65535

maybe sdk problem

[robertgregor]

Hello, I have ESP-07 module, where the TOUT is labeled as ADC pin. I don't have it connected, but I am as well reading 2^16. I have SDK 1.0.1

[tontito]

I tried esp-07 and esp-12 always return 65535.

esp-07 and esp-12 nodemcu return 3614 or 3616

[creationix]

What include is required to get system_get_vdd33()?

[tontito]

extern "C" {
#include "user_interface.h"
}

void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println(analogRead(0));
Serial.println(system_get_vdd33());

}

return serial monitor:
737
65535

ADC --> VCC return serial monitor:
1024
65535

[igrr]

ADC has 0 – 1.0 V range, so don't connect it to VCC...

[tontito]

I thought so TOUT = ADC (for ESP-07) i tried return VCC maybe.

Sorry my english very bad. google translate :)

[creationix]

@tontito I can see the definition is in that file., but adding user_interface.h doesn't help. I'm in the main .ino file if that helps any.

Here is my program:

extern "C" {
#include "user_interface.h"
}

void setup() {
 Serial.begin(115200);
}

void loop() {
  Serial.println(analogRead(0));
  Serial.println(system_get_vdd33());
  delay(1000);
}

And the output I get is:

Arduino: 1.6.1 (Linux), Board: "Generic ESP8266 board"

Build options changed, rebuilding all

/home/tim/Downloads/arduino-1.6.1/hardware/tools/esp8266/xtensa-lx106-elf/bin/xtensa-lx106-elf-g++ -D__ets__ -DICACHE_FLASH -I/home/tim/Downloads/arduino-1.6.1/hardware/tools/esp8266/sdk//include -c -Os -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -std=c++11 -MMD -DF_CPU=80000000L -DARDUINO=10601 -DARDUINO_ESP8266_ESP01 -DARDUINO_ARCH_ESP8266 -DESP8266 -I/home/tim/Downloads/arduino-1.6.1/hardware/esp8266com/esp8266/cores/esp8266 -I/home/tim/Downloads/arduino-1.6.1/hardware/esp8266com/esp8266/variants/esp01 /tmp/build7372776056876877767.tmp/scanner.cpp -o /tmp/build7372776056876877767.tmp/scanner.cpp.o 
scanner.ino: In function 'void loop()':
scanner.ino:11:35: error: 'system_get_vdd33' was not declared in this scope
Error compiling.

[creationix]

Also if I manually define it by inserting the header line:

uint16 system_get_vdd33(void);

It compiles, but fails in linking with:

/tmp/build7372776056876877767.tmp/scanner.cpp.o: In function `setup':
scanner.cpp:(.text+0x20): undefined reference to `system_get_vdd33()'
scanner.cpp:(.text+0x3c): undefined reference to `system_get_vdd33()'
collect2: error: ld returned 1 exit status
Error compiling.

[chadouming]

In your extern c declaration, add :

uint16 readvdd33(void);

And use that instead. It works fine here.

On Thu, May 14, 2015, 11:05 Tim Caswell notifications@github.com wrote:

Also if I manually define it by inserting the header line:

uint16 system_get_vdd33(void);

It compiles, but fails in linking with:

/tmp/build7372776056876877767.tmp/scanner.cpp.o: In function setup': scanner.cpp:(.text+0x20): undefined reference tosystem_get_vdd33()'
scanner.cpp:(.text+0x3c): undefined reference to `system_get_vdd33()'
collect2: error: ld returned 1 exit status
Error compiling.

—
Reply to this email directly or view it on GitHub
#225 (comment).

[creationix]

@chaduoming Thanks, but that's not working either. (Also didn't you mean uint16_t for the return type?)

If I put it in the extern block, the compiler complains it's not defined.

If I put it outside, the linker complains:

scanner.cpp:(.text+0x160): undefined reference to `readvdd33()'

[chadouming]

see that : https://github.com/chadouming/hardware/commit/06e0f00fda03101dab036f34252f1b1fc5bc4e96

[creationix]

@chadouming nice, how do I use your fork? Do I just dump it in the hardware folder of arduino?

I also have local modifications to use esptool.py with custom -fm dio in the flash command (Using the black nodemcu devkit).

[tontito]

nice job :)
insert

ESP.cpp
extern "C" uint16_t readvdd33(void);
uint16_t EspClass::getVdd33(void)
{
return readvdd33();
}

and ESP.h
uint16_t getVdd33(void);

Volt = ESP.getVdd33();
return 3614

:)) very very nice.

for me it's a beautiful day

insert SpifFs file system work and readvdd33 work :)

only one for me OTA (air update) :))))))