不韋 呂
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
Diff: main.cpp
- Revision:
- 0:473989635348
- Child:
- 1:5c7f4c52d797
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Oct 27 23:51:05 2014 +0000
@@ -0,0 +1,46 @@
+//--------------------------------------------------------------
+// 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
+// 2014/10/23, Copyright (c) 2014 MIKAMI, Naoki
+//--------------------------------------------------------------
+
+#include "mbed.h"
+
+#include "ADC_Interrupt.hpp" // for ADC using interrupt
+#include "DAC_MCP4922.hpp" // for DAC MCP4922
+#include "ScfClockTim3.hpp" // for clock supplied to SCF
+#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()
+{
+ 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;
+ }
+ }
+}