float to string in Printf() + ble_nus()

RE: float to string in Printf() + ble_nus()

howard n2wx — Mon, 03 Dec 2018 18:52:47 GMT

See Jørgen's suggestion if you're on SES, if you're on IAR right click on your project and select at least the Full scanf formatter

Jørgen Holmefjord — Mon, 03 Dec 2018 10:40:10 GMT

Hi,

Which compiler/IDE are you using? If using Segger Embedded Studio, you might need to enable Printf floating point support:

Best regards,
Jørgen

Sunil vignesh — Mon, 03 Dec 2018 04:27:24 GMT

HI howard,

i tried "%s%d.%02d" . it shows same. "%d.%02d" result.

if I use "%f" or ".2f" the result in both serial and mobile app is same

AccX =

it shows only the blank space

howard n2wx — Sun, 02 Dec 2018 20:17:18 GMT

Hello Sunil,

 float accelX = ((((float)accel.x) / G_TO_LSB) * 9.80655); // in m/s^2
...
      length1 = sprintf(str, "AccX = %d.%02d \n", accelX);

Is there a particular reason you're using two %d in the format strings instead of a single %f or %d?