Diff: CD74HC4067.h

Revision:

0:7f158d69af5e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CD74HC4067.h	Sat Jan 20 10:52:09 2018 +0000
@@ -0,0 +1,56 @@
+//CD74HC4067 Library based on bildr code: "http://bildr.org/2011/02/cd74hc4067-arduino/"
+//Ported to mbed by Scott M. O'Hair
+//
+//sample code:
+/*
+#include "mbed.h"
+#include "CD74HC4067.h"
+
+Serial pc(PB_6, PA_10, 115200); //tx, rx 
+
+CD74HC4067 mux1(D8, D9, D12, D11, A0); //S0, S1, S2, S3, SIG
+ 
+int main()
+{
+    pc.printf("Running MUX test\n");
+    while(1) {
+        //Loop through and read all 16 values
+        for(int i = 0; i < 15; i++) {    
+            mux1.currentState = mux1.readMux(i);
+            if (fabs(mux1.portState[i] - mux1.currentState) > BTN_NOISE_THRES) { 
+                pc.printf("Value at channel %i is %f\n", i, mux1.currentState);
+                mux1.saveState(i, mux1.currentState);
+            }
+        }
+
+    }
+}
+*/
+
+
+
+#ifndef MBED_CD74HC4067_H
+#define MBED_CD74HC4067_H
+ 
+#include "mbed.h"
+ 
+#define BTN_NOISE_THRES   0.018f            //Define a threshold for the amount of analog change required
+
+class CD74HC4067 {
+public:
+    CD74HC4067(PinName S1, PinName S2, PinName S3, PinName S4, PinName SIG);
+    void saveState(uint8_t port, float state);
+    float readMux(uint8_t channel);
+    float currentState ;
+    float portState[16];
+  
+private:  
+    DigitalOut _S0;
+    DigitalOut _S1;
+    DigitalOut _S2;
+    DigitalOut _S3;
+    AnalogIn _SIG;    
+
+};
+ 
+#endif
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