Calibrate Chip Temp Vsense on startup

[dzid26]

The temperature sensor output voltage changes linearly with temperature. The offset of this
line varies from chip to chip due to process variations (up to 45 °C from one chip to another). This is extreme but possible. In reality those chips seem pretty consistent

Nevertheless, calibration can be performed using temperature values from TLE5012 on startup
stash@{4}

Later TLE5012 temperature could be read all the time and compared against the STM32 temperature or maximum taken, but this has to be handled properly so that extra SPI usage doesn't cause conflict or delays.

To calibrate STM32 VSENSE these variables have to be adjusted

StepperServoCAN/firmware/src/BSP/board.c

Lines 326 to 327 in 7d2c3d2

	const float t0 = 35.0f;
	const float adcVoltRef = 1.325f; //! calibrate at some t0