I'm trying to send a saadc float value over ble (dk to dongle) with ble_nus. I'm getting the right values but also some other stuff in addition. How can I filter this?
Your sizeof(data) function will return the size of the array regardless of the length of the string. You can use strlen() or the return value from sprintf() to assign the length of the actual string to d_len.
When nothing is connected to the AIN pin, the pin is floating, it is not connected to GND. It will then be affected by noise and other signals close to the pin, so you will read any arbitrary value from the pin, not zero.
When nothing is connected to the AIN pin, the pin is floating, it is not connected to GND. It will then be affected by noise and other signals close to the pin, so you will read any arbitrary value from the pin, not zero.
