Diff: daq.h

Revision:

0:03e8a03052c9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/daq.h	Fri Aug 27 15:20:30 2010 +0000
@@ -0,0 +1,49 @@
+/**
+    * @file daq.h
+    * Header file for daq.cpp - a data acquisition system capable of
+    * sampling from multiple ADCs in BURST mode to allow consistent,
+    * high-rate sampling. The samples are passed to a bank of decimators
+    * to allow the samples to be synchronised with another, slower
+    * sampling clock or other sampling sources/
+    *
+    * @brief Header file for daq.cpp
+    *
+    * @author James A C Patterson
+ */
+#ifndef DAQ_H
+#define DAQ_H
+
+typedef void (*FuncPtr)(void);
+
+class ADC_BURST {
+public:
+    ADC_BURST ();
+    ~ADC_BURST ();
+    void attach(FuncPtr);
+    void burst_isr(void);
+    uint32_t data[4];
+private:
+    FuncPtr isr_pointer_;
+    bool attached_;
+    static ADC_BURST *instance;
+    static void _burst_isr(void);
+};
+
+/**
+ *  Decimator class to implement simple low-pass filtering on uC
+ *  Unsigned integer decimator. Depth up to 32 samples.
+ *  Currently just behaves as a uniform weighted FIR
+ */
+class Decimator {
+public:
+    Decimator (uint8_t);
+    void write (uint16_t);
+    uint16_t read ();
+private:
+    uint8_t decimation_order_;
+    uint8_t decimation_length_;
+    uint8_t decimation_pointer_;
+    uint16_t decimation_buffer_[32];
+    uint32_t accumulator_;
+};
+#endif
\ No newline at end of file