how to print float values using ble_app_template

[manoj97]

i have done ble_app_template writing values from nrf app connect, in that i have send only integer values from nrf app connect

now i want to write float values from nrf app and flaot values have to print 

which part of the code i have to change

[bjorn-spockeli]

Bluetooth Low Energy only transmits a uint8_t byte array. However, you can convert the the float into ASCII chars and then transmit that. It should display as text in the nRF Connect app. 

double temp = read_temperature();

// Place the temperature measurement into the data array
uint32_t err_code;
uint8_t data[20];
sprintf((char *)data, "Temperature: %f", temp);

// Pass the data array to sd_ble_gatts_hvx() to send it to the connected central.

Best regards

Bjørn

[manoj97]

Bjorn thank you! 

i'm trying to give float values from the nRF connect app, the ble app template has to take that value and those input values has to print on debugger. how can i take those float values 

[bjorn-spockeli]

It will be the same in that direction as well. You can only send a byte array, so you can send the float as ascii chars and then print it on the nRF side. I recommend that you take a look a the ble_app_uart example. It does exactly this!