Jim Patterson / Mbed 2 deprecated MultiSensor_00

This code is to collect data from the ADCs in burst mode, decimate the data, encapsulate it in a simple UDP-like packet and then transmit it over the serial port.

Dependencies:   mbed

daq.h@0:03e8a03052c9, 2010-08-27 (annotated)

Committer:
jimurai
Date:
Fri Aug 27 15:20:30 2010 +0000
Revision:
0:03e8a03052c9

        

        
Who changed what in which revision?

        

            
                
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jimurai

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/**





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    * @file daq.h





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    * Header file for daq.cpp - a data acquisition system capable of





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    * sampling from multiple ADCs in BURST mode to allow consistent,





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    * high-rate sampling. The samples are passed to a bank of decimators





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    * to allow the samples to be synchronised with another, slower





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    * sampling clock or other sampling sources/





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    *





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    * @brief Header file for daq.cpp





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    *





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    * @author James A C Patterson





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 */





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#ifndef DAQ_H





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#define DAQ_H





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typedef void (*FuncPtr)(void);





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class ADC_BURST {





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public:





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    ADC_BURST ();





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    ~ADC_BURST ();





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    void attach(FuncPtr);





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    void burst_isr(void);





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    uint32_t data[4];





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private:





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    FuncPtr isr_pointer_;





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    bool attached_;





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    static ADC_BURST *instance;





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    static void _burst_isr(void);





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};





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/**





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 *  Decimator class to implement simple low-pass filtering on uC





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 *  Unsigned integer decimator. Depth up to 32 samples.





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 *  Currently just behaves as a uniform weighted FIR





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 */





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class Decimator {





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public:





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    Decimator (uint8_t);





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    void write (uint16_t);





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    uint16_t read ();





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private:





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    uint8_t decimation_order_;





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    uint8_t decimation_length_;





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    uint8_t decimation_pointer_;





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    uint16_t decimation_buffer_[32];





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    uint32_t accumulator_;





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};





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#endif