TH02 sensor for temperature and humidity measurement

[shariq]

Hi

I am using TH02 for temp and RH measurement 

I understand I must use TWI provided in SDK. However, I a working have c++ library(Wire.h) for I2C that I used with Arduino IDE and TH02 sensor . Will it work if I include it in my KEIL project provided in SDK and not use TWI drivers at all?

[Amanda Hsieh]

Hi, 

Will it work if I include it in my KEIL project provided in SDK and not use TWI drivers at all?

No. 

-Amanda H. 

[shariq]

In that case here is my actual problem.

In order to read values from TH02 sensor(Address: 0x40) I first need to give a command i.e. write 0x01(for temperature) and 0x11(for RH) resp into internal CONFIG register(having address 0x03) and then read the values. 

I am unable to understand where to write my commands in the nrf_drv_twi_tx() function after which I can read using nrf_drv_twi_rx() function.

Please let me know if you can help with this. Here is the datasheet for TH02 sensor. 

[Amanda Hsieh]

Hi, 

If you take a look at the TWI Sensor Example, it is located in the LM75B_set_mode() function. 

Please also see this post. 

-Amanda H.