nrf UART app receive value sent from uart app

Question

Hi, I am using the nrf uart app to communicate with a smart phone and the NRF52. I am trying to detect whenever it is sent a value between 0 and 60 from the phone, and save it to an int.
I know that I get a callback from the function nus_data_handler whenever something is received on the nrf, but I dont really know how to convert that data to type int. 
 (I am using the smart phone app NRF UART) 
 -Erblin

Sigurd · Accepted Answer

One solution to store the number sent from the phone, could be something like this: 
 static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
 uint32_t myNumber = 0;
 for (uint32_t i = 0; i < length; i++)
 {
 while (app_uart_put(p_data[i]) != NRF_SUCCESS);
 myNumber = myNumber + ((p_data[i]-'0')*pow(10,length-i-1));
 }
 while (app_uart_put('') != NRF_SUCCESS);
 while (app_uart_put('
') != NRF_SUCCESS);
 printf("myNumber is: %d
",myNumber);
}
 
 You will need to add #include "math.h" for the pow()-function.

nrf UART app receive value sent from uart app

Top Replies