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User ADC #167

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merged 4 commits into from Jun 6, 2018

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@samuelsadok
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commented May 15, 2018

ADC1 is configured to sample channels 0 to 15 continuously
at about 30kHz. Users can now set their GPIO of choice to
analog mode (as long as it's wired to one of the analog
channels) and then read the voltage at any time.

On startup GPIOs 1, 2, 3 and 4 (and GPIO 5 for board v3.5) are initialized to analog unless used by any other feature. For board v3.4 this means GPIOs 3 and 4 are analog by default.

Usage Example (in firmware):

GPIO_set_to_analog(GPIO_1_GPIO_Port, GPIO_1_Pin);
my_voltage = get_adc_voltage(GPIO_1_GPIO_Port, GPIO_1_Pin);

Usage example (ODrive Tool)

In [11]: odrv0.get_adc_voltage(3)
Out[11]: 0.0

In [12]: odrv0.get_adc_voltage(4)
Out[12]: 3.278247117996216

@samuelsadok samuelsadok force-pushed the sam_user_adc branch from e754419 to 8339311 May 15, 2018

samuelsadok and others added some commits May 15, 2018

@madcowswe madcowswe merged commit f830674 into devel Jun 6, 2018

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@madcowswe madcowswe deleted the sam_user_adc branch Jun 6, 2018

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