Diff: ExioMcp23s17DigitalIn.h

Revision:

3:aaea541bdbf9

Child:

4:4a8ba9d9926b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ExioMcp23s17DigitalIn.h	Sun Oct 30 14:17:37 2016 +0000
@@ -0,0 +1,55 @@
+/*
+ * ExioDigitalIn.h
+ *
+ * Created: 2016.10.30
+ *
+ */
+ 
+#ifndef _EXIOMCP2317SDIGITALIN_H_
+#define _EXIOMCP2317SDIGITALIN_H_
+
+#include "mbed.h"
+#include "ExioMcp23s17.h"
+
+class ExioMcp23s17DigitalIn {
+public:
+    ExioMcp23s17DigitalIn(ExioMcp23s17& _device, ExioPort _port, int _pin) : 
+        device(_device),
+        port(_port),
+        pin(_pin)
+    {
+        // set as input
+        uint8_t tmp = device.ioDirection(port);
+        device.ioDirection(port, tmp | (1 << pin));
+        //printf("pin:%d port:%d %d\r\n", pin, port, device.ioDirection(port));
+    }
+    
+    void mode(PinMode pull)
+    {
+        uint8_t tmp = device.ioPullup(port);
+        switch (pull) {
+        case PullUp:
+            device.ioPullup(port, tmp | (1 << pin));
+            break;
+        case PullNone:
+            device.ioPullup(port, tmp & ~(1 << pin));
+            break;
+        default:
+            error("PinMode must be PullUp or PullNone");
+        }
+    }
+    
+    int read()
+    {
+        uint8_t data = device.readPort(port);
+        int bv = data & (1 << pin);
+        return bv ? 1 : 0;
+    }
+    
+protected:
+    ExioMcp23s17 device;
+    ExioPort port;
+    int pin;
+};
+
+#endif //_EXIOMCP2317SDIGITALIN_H_