Diff: ADCSensor.h

Revision:

0:8d34cc2ff388

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ADCSensor.h	Sun Mar 16 01:48:59 2014 +0000
@@ -0,0 +1,49 @@
+/* ADCSensor.h
+ * Tested with mbed board: FRDM-KL46Z
+ * Author: Mark Gottscho
+ * mgottscho@ucla.edu
+ */
+
+#ifndef ADCSensor_H
+#define ADCSensor_H
+
+#include "mbed.h"
+#include "PeriodicSensor.h"
+
+class ADCSensor : public PeriodicSensor {
+    public:
+        /**
+         * Constructs an ADCSensor.
+         * @param adc_pin the ADC pin to use
+         */
+        ADCSensor(PinName adc_pin);
+        
+        ~ADCSensor();
+        
+        /**
+         * @param sampleNow if true, samples the ADC returns it. if false, gets the last sampled value.
+         * The latter is preferred if this object is set up to sample using interrupts.
+         * @returns a raw ADC reading
+         */
+        uint16_t getSample(bool sampleNow);
+        
+        /**
+         * @param sampleNow if true, samples the ADC returns it. if false, gets the last sampled value.
+         * The latter is preferred if this object is set up to sample using interrupts.
+         * @returns the ADC reading in Volts
+         */
+        float getSampleFloat(bool sampleNow);
+        
+    private:
+        /**
+         * Interrupt service routine for sampling the ADC.
+         */
+        virtual void __sample_data_ISR();
+        
+        AnalogIn __adc;
+        volatile uint16_t __data;
+        
+        const static float ADC_DIV = 0.00005035; //Volts/level
+};
+
+#endif
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