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Dependencies:   mbed

AnalogIO_1ch/MCP4921.hpp@0:b027da9cfc23, 2014-07-28 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Jul 28 07:25:49 2014 +0000
Revision:
0:b027da9cfc23
Child:
1:18123753e1d0
ver.1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:b027da9cfc23 1 //------------------------------------------------------
MikamiUitOpen 0:b027da9cfc23 2 // Class for DAC, MCP4921
MikamiUitOpen 0:b027da9cfc23 3 //
MikamiUitOpen 0:b027da9cfc23 4 // Default pin assign
MikamiUitOpen 0:b027da9cfc23 5 // D11 SPI Master Out Slave In
MikamiUitOpen 0:b027da9cfc23 6 // D13 SPI Serial Clock
MikamiUitOpen 0:b027da9cfc23 7 // D10 SPL Slave Select
MikamiUitOpen 0:b027da9cfc23 8 //
MikamiUitOpen 0:b027da9cfc23 9 // 2014/07/18, Copyright (c) 2014 MIKAMI, Naoki
MikamiUitOpen 0:b027da9cfc23 10 //------------------------------------------------------
MikamiUitOpen 0:b027da9cfc23 11
MikamiUitOpen 0:b027da9cfc23 12 #ifndef MCP4921_HPP
MikamiUitOpen 0:b027da9cfc23 13 #define MCP4921_HPP
MikamiUitOpen 0:b027da9cfc23 14
MikamiUitOpen 0:b027da9cfc23 15 #include "mbed.h"
MikamiUitOpen 0:b027da9cfc23 16
MikamiUitOpen 0:b027da9cfc23 17 namespace Mikami
MikamiUitOpen 0:b027da9cfc23 18 {
MikamiUitOpen 0:b027da9cfc23 19 class DacMCP4921
MikamiUitOpen 0:b027da9cfc23 20 {
MikamiUitOpen 0:b027da9cfc23 21 public:
MikamiUitOpen 0:b027da9cfc23 22 // Constructor
MikamiUitOpen 0:b027da9cfc23 23 DacMCP4921(PinName mosi = SPI_MOSI, // D11
MikamiUitOpen 0:b027da9cfc23 24 PinName sclk = SPI_SCK, // D13
MikamiUitOpen 0:b027da9cfc23 25 PinName cs = SPI_CS, // D10
MikamiUitOpen 0:b027da9cfc23 26 int hz = 20000000);
MikamiUitOpen 0:b027da9cfc23 27
MikamiUitOpen 0:b027da9cfc23 28 // -1.0f <= valeu <= 1.0f
MikamiUitOpen 0:b027da9cfc23 29 void Write(float value);
MikamiUitOpen 0:b027da9cfc23 30 // 0 <= valeu <= 4095
MikamiUitOpen 0:b027da9cfc23 31 void Write(uint16_t value);
MikamiUitOpen 0:b027da9cfc23 32 // generate LDAC pulse for dual DAC
MikamiUitOpen 0:b027da9cfc23 33 void Ldac();
MikamiUitOpen 0:b027da9cfc23 34
MikamiUitOpen 0:b027da9cfc23 35 private:
MikamiUitOpen 0:b027da9cfc23 36 SPI mySpi_; // SPI object
MikamiUitOpen 0:b027da9cfc23 37 DigitalOut myCs_; // for chip select
MikamiUitOpen 0:b027da9cfc23 38
MikamiUitOpen 0:b027da9cfc23 39 // for use internally
MikamiUitOpen 0:b027da9cfc23 40 void WriteDac(uint16_t value);
MikamiUitOpen 0:b027da9cfc23 41 };
MikamiUitOpen 0:b027da9cfc23 42 }
MikamiUitOpen 0:b027da9cfc23 43 #endif // MCP4921_HPP