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arduino / ArduinoCore-samd

Arduino Core for SAMD21 CPU
GNU Lesser General Public License v2.1
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[Question] Calibration area access is not present on samd51 #418

Closed GMagician closed 5 years ago

GMagician commented 5 years ago

Samd51 has a special reserved are with calibration values, its address is 0x00800080.

The NVM Software Calibration Area contains calibration data that are determined and written during production test. These calibration values should be read by the application software and written back to the corresponding register.

In this area there are some ADC calibration values that "software" has to load (ADCx BIASCOMP, ADCx BIASREFBUF, ADCx BIASR2R, ...). Since there is no reference to such memory address in this core then I think that these values are never loaded by anyone...

Is not a good solution to add defines for this area?

cmaglie commented 5 years ago

I think it's done already here:

https://github.com/arduino/ArduinoCore-samd/blob/master/cores/arduino/startup.c#L287

GMagician commented 5 years ago

mmm samd51 has 2 adc and such code is not present in core I have, coming from platformio (adafruit). I wrongly though such core was originated from here

GMagician commented 5 years ago

lol this core si for samd21...now it's all clear to me..sorry