MCP3021
Diff: MCP3021.h
- Revision:
- 0:423652b49d07
diff -r 000000000000 -r 423652b49d07 MCP3021.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MCP3021.h Tue Sep 02 15:34:15 2014 +0000 @@ -0,0 +1,41 @@ +#ifndef MCP3021_H + +#define MCP3021_H + +#include "mbed.h" + +#define MCP3021_CONVERSE 0x9B //10011011 NOTE IT ENDS IN 1, this is the READ ADDRESS. This is all this device does. + //It opens a conversation via this specific READ address + +//Library for the MCP3021 12 BIT ADC. + +class MCP3021 +{ +public: + + /* + Creates instance + Connect module using I2C port pins sda and scl. The output is referenced to the supply voltage which can be + 2.7v to 5.0v. The read will return the correct voltage, if you supply the correct supplyVoltage when instantiating. + */ + MCP3021(PinName sda, PinName scl, float supplyVoltage); + + /* + Destroys instance. + */ + ~MCP3021(); + + /* + Reads the analog register of the MCP3021 and converts it to a useable value. (a voltage) + */ + float read(); + +private: + + I2C i2c; + float _supplyVoltage; + char _data[2]; + +}; + +#endif \ No newline at end of file