DAC_MCP4922Dual.hpp

00001 //------------------------------------------------------
00002 // Class for dual channel DAC in MCP4922
00003 // 2015/04/01, Copyright (c) 2015 MIKAMI, Naoki
00004 //------------------------------------------------------
00005 
00006 #ifndef DAC_MCP4922_DUAL_HPP
00007 #define DAC_MCP4922_DUAL_HPP
00008 
00009 #include "DAC_MCP4922.hpp"
00010 
00011 namespace Mikami
00012 
00013 {
00014     class DAC_MCP4922Dual : public DAC_MCP4922
00015     {
00016     public:
00017         DAC_MCP4922Dual(
00018             PinName mosi = SPI_MOSI,    // D11
00019             PinName sclk = SPI_SCK,     // D13
00020             PinName cs   = SPI_CS,      // D10
00021             PinName ldac = SPI_MISO)    // D12
00022                 : DAC_MCP4922(DAC_A, mosi, sclk, cs, ldac) {}
00023 
00024 
00025         void Write(float valA, float valB)
00026         {
00027             SetCR(DAC_A);
00028             DAC_MCP4922::Write(valA);   // Write to DAC A
00029             SetCR(DAC_B);
00030             DAC_MCP4922::Write(valB);   // Write to DAC B
00031             Wait();
00032             while (IsBusy()) {}
00033             Ldac();
00034         }
00035 
00036         void Write(uint16_t valA, uint16_t valB)
00037         {
00038             SetCR(DAC_A);
00039             DAC_MCP4922::Write(valA);   // Write to DAC A
00040             SetCR(DAC_B);
00041             DAC_MCP4922::Write(valB);   // Write to DAC B
00042             Wait();
00043             while (IsBusy()) {}
00044             Ldac();
00045         }
00046 
00047     private:
00048         void Wait()     // Little wait
00049         {   __NOP(); __NOP(); __NOP(); }
00050     };
00051 }
00052 #endif  // DAC_MCP4922_DUAL_HPP