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Prototype program of AD and DA using classes in UIT_ADDA. This program does not use interrupt of ADC. This program also example of exchanging input channel for ST Nucleo F401RE. UIT_ADDA のクラスを使った AD および DA のためのプログラムで,入力の切り替えを行う場合の雛形.ADC の割り込みは使わないバージョン.ST Nucleo F401 用.
Dependencies: UIT_ACM1602NI UIT_ADDA mbed
main.cpp
- Committer:
- MikamiUitOpen
- Date:
- 2014-11-12
- Revision:
- 1:5c7f4c52d797
- Parent:
- 0:473989635348
- Child:
- 3:107eba32fd7f
File content as of revision 1:5c7f4c52d797:
//-------------------------------------------------------------- // 割り込みを使わずに AD DA を行う場合の雛形, 入力切替 // Analog line Input : A0 (channel 1) // Analog mic. Input : A1 (channel 2) // Analog Output: MCP4922 using SPI // Switch : D2 // 2014/11/12, Copyright (c) 2014 MIKAMI, Naoki //-------------------------------------------------------------- #include "mbed.h" #include "ADC_Interrupt.hpp" // for ADC using interrupt #include "DAC_MCP4922.hpp" // for DAC MCP4922 #include "ACM1602NI.hpp" // for LCD display using namespace Mikami; const int FS_ = 10000; // Sampling frequency: 10 kHz ADC_Base adc_(A0, FS_, A1); // for AD DAC_MCP4922 myDac_; // for DA DigitalIn sw_(D2, PullDown); int main() { myDac_.ScfClockTim3(420000); // cutoff frequency: 4.2 kHz int swBefore = 0; while (true) { float xn = adc_.Read(); // Read from A0 //----------------------------------------------- // Put signal processing program here //----------------------------------------------- myDac_.Write(xn); // Write to DAC int swNow = sw_.read(); if (swNow != swBefore) { if (swNow == 0) adc_.Select1stChannel(); // line input else adc_.Select2ndChannel(); // mic. input swBefore = swNow; } } }