The example for si7021 on esp8266 is not running

[funnypinky]

Hi,
when I try the example for the sensor si7021 on the esp8266, is not running. The debug-information from monitor:

D (481) i2cdev: Reconfiguring I2C driver on port 0
I (488) gpio: GPIO[4]| InputEn: 0| OutputEn: 1| OpenDrain: 1| Pullup: 0| Pulldown: 0| Intr:0 
I (502) gpio: GPIO[5]| InputEn: 0| OutputEn: 1| OpenDrain: 1| Pullup: 0| Pulldown: 0| Intr:0 
D (516) i2cdev: I2C driver successfully reconfigured on port 0
E (525) i2cdev: Could not read from device [0x40 at 0]: -1
ESP_ERROR_CHECK failed: esp_err_t 0xffffffff (ESP_FAIL) at 0x40211e6c
0x40211e6c: _esp_error_check_failed at /home/office/esp/ESP8266_RTOS_SDK/components/freertos/port/esp8266/panic.c:210

file: "main.c" line 32
func: task
expression: si7021_get_serial(&dev, &serial, false)
abort() was called at PC 0x40211e6f on core 0
0x40211e6f: _esp_error_check_failed at /home/office/esp/ESP8266_RTOS_SDK/components/freertos/port/esp8266/panic.c:211

Guru Meditation Error: Core  0 panic'ed (StoreProhibited). Exception was unhandled.
Core 0 register dump:
PC      : 0x40218f8e  PS      : 0x00000030  A0      : 0x40218f8c  A1      : 0x3ffec9e0  
0x40218f8e: abort at /home/office/esp/ESP8266_RTOS_SDK/components/newlib/newlib/port/syscall.c:168 (discriminator 1)

0x40218f8c: abort at /home/office/esp/ESP8266_RTOS_SDK/components/newlib/newlib/port/syscall.c:168 (discriminator 1)

A2      : 0x00000000  A3      : 0x00000001  A4      : 0xffffffdb  A5      : 0x00000001  
A6      : 0x00000000  A7      : 0x4022a848  A8      : 0x00000000  A9      : 0x00000090  
A10     : 0x3ffec843  A11     : 0x00000031  A12     : 0x00000000  A13     : 0x00000000  
A14     : 0x00000000  A15     : 0x00000000  SAR     : 0x0000001e  EXCCAUSE: 0x0000001d  

Backtrace: 0x40218f8e:0x3ffec9e0 0x40211e72:0x3ffec9f0 0x40213a7a:0x3ffeca00 
0x40218f8e: abort at /home/office/esp/ESP8266_RTOS_SDK/components/newlib/newlib/port/syscall.c:168 (discriminator 1)

0x40211e72: _esp_error_check_failed at ??:?

0x40213a7a: task at /home/office/esp/projects/esp-idf-lib/examples/si7021/main/main.c:33

I try with the arduino-ide and they works fine. And the I2C-findes from randomnerds, found the sensor on adress 0x40.

Have anybody ideas for my issues?

Thank you,

funnypinky

[trombik]

which ESP8266 RTOS SDK version?

in general, the SDK is not as stable as esp-idf. master often has a better chance, but that depends on how lucky you are. checkout older revisions of the SDK, the one your arduino version is using, and run the test. git bisect may help.

[funnypinky]

Hi,

i use v3.3 witch the less version i can't build the example: -No rule for the target "component-driver-build"... - i try the master branch the same result.