ADC (Analog to Digital Converter)

Analog pins can read analog voltages and convert to 10-bit digital values (0 to 1023).

API

Includes

#include "adc.ceu"

Code Abstractions

Adc

Initializes the ADC peripheral.

code/await Adc (none) -> NEVER;

Parameters:

• none

Return:

• NEVER: never returns

Adc_Conversion

Requests an analog to digital conversion.

code/await Adc_Conversion (var int pin) -> int;

Parameters:

1. int: pin to read

Return:

• int: value of the conversion

Examples

Periodic conversion

Reads _A0 every second and sets OUT_13 if the value is greater than 1000:

#include "out.ceu"
#include "wclock.ceu"
#include "adc.ceu"

output high/low OUT_13;

spawn Adc();

loop do
    await 1s;
    var int value = await Adc_Conversion(_A0);
    emit OUT_13(value > 1000);
end

Concurrent conversion

Reads _A0 and _A1 every second and sets OUT_13 if the sum is greater than 2000:

#include "out.ceu"
#include "wclock.ceu"
#include "adc.ceu"

output high/low OUT_13;

spawn Adc();

loop do
    await 1s;
    var int v1 = _;
    var int v2 = _;
    par/and do
        v1 = await Adc_Conversion(_A0);
    with
        v2 = await Adc_Conversion(_A1);
    end
    if v1+v2 > 2000 then
        emit OUT_13(high);
    else
        emit OUT_13(low);
    end
end