topic MQX ADC Calibration in MQX Software Solutions

MQX ADC Calibration

pk2 — Mon, 16 Jun 2014 20:43:39 GMT

Is there a calibration function in MQX for the lwadc? If there is not, how would I calibrated the adc readings?

Re: MQX ADC Calibration

soledad — Tue, 17 Jun 2014 16:11:17 GMT

You can use the ADC_IOCTL_CALIBRATE IOCTL Command, this starts calibration process on a device. Command fails if any channel on a device is opened.

For example:

ioctl( adc_file, ADC_IOCTL_CALIBRATE, NULL );

   _io_tchres_install("tchscr:", &_bsp_tchscr_resisitve_init, adc_file );

Have a great day,
Sol

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: MQX ADC Calibration

pk2 — Thu, 19 Jun 2014 19:51:08 GMT

Thanks soledad. I has looking for something like "lwadc_calibrate" since my a/d code is based on the example that is included with MQX4.1 The a/d examples in MQX4.0 are not included with MQX 4.1 for some reason.