TWI Sensor example not working.

[William Nguyen]

Hi all,

I'm working with TWI Sensor example.  I've followed this https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.0.0%2Ftwi_sensor_example.html and bought LM75 sensor and connect it to my NRF52832 kit. As the example configuration, I connect the SCL and SDA pin of sensor to ARDUINO_SCL_PIN (27) and ARDUINO_SDA_PIN (26). But when I run the example, I don't see anything on my Debug Terminal.

This is my LM75 sensor

How can I see the temperature data? Thanks alot!

[Håkon Alseth]

Hi,

 

Do you see anything at all in the uart terminal?

You should initially see this:

<info> app:
TWI sensor example started.

If this is not shown, then try starting from a clean slate:

nrfjprog -e -f nrf52

nrfjprog --program path\to\nRF5_SDK_15.2.0_9412b96\examples\peripheral\twi_sensor\hex\twi_sensor_pca10040.hex --sectorerase -f nrf52

nrfjprog --reset -f nrf52

Do you still not see any output on the UART?

Note that the above will program the precompiled .hex file.

Kind regards,

Håkon

[William Nguyen]

Thanks alot! I see the data from UART Terminal. My bad came from I didn't see any uart_init() function in the code and I didn't do all the tutorial steps.