63 lines
2.0 KiB
Matlab
63 lines
2.0 KiB
Matlab
classdef MuxSetup < handle
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properties(Access=private)
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mux1Pin=5;
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mux2Pin=6;
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mux3Pin=13;
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digInPin=19;
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anOutTriggerPin=23;
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dev;
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end
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properties
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setup=[0 0 0; 1 0 0; 0 1 0; 1 1 0; 0 0 1; 1 0 1; 0 1 1; 1 1 1];
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spiDevice;
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end
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methods
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function obj = MuxSetup(dev)
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obj.dev = dev;
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configurePin(dev, obj.mux1Pin, 'DigitalOutput');
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configurePin(dev, obj.mux2Pin, 'DigitalOutput');
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configurePin(dev, obj.mux3Pin, 'DigitalOutput');
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configurePin(dev, obj.digInPin, 'DigitalInput');
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configurePin(dev, obj.anOutTriggerPin, 'DigitalOutput');
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obj.spiDevice = spidev(dev, 'CE0');
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end
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function set(obj, channel)
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% Set the mux up for reading from a channel
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if (channel > 0) && (channel <= 8)
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writeDigitalPin(obj.dev, obj.mux1Pin, obj.setup(channel, 1));
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writeDigitalPin(obj.dev, obj.mux2Pin, obj.setup(channel, 2));
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writeDigitalPin(obj.dev, obj.mux3Pin, obj.setup(channel, 3));
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end
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end
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function digInVal = readDigital(obj)
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% Read the value of a digital input after setting the Mux
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digInVal = ~readDigitalPin(obj.dev, obj.digInPin);
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end
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function analogValue = readAnalogSPI(obj)
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enableSPI(obj.dev);
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analogValue = -1;
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analogRaw = writeRead(obj.spiDevice,[hex2dec('00') hex2dec('00') hex2dec('00')]);
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if (analogRaw(3) == 13)
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x = uint16(analogRaw(1)) * 256;
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analogValue = x + uint16(analogRaw(2));
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end
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% disableSPI(obj.dev);
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end
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end
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methods(Static)
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function test
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pi = raspi('10.0.0.104', 'pi', 'HenryPump@1903');
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mux = MuxSetup(pi);
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mux.set(1);
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mux.readAnalogSPI()
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mux.set(2);
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mux.readAnalogSPI()
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end
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end
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end |