Diff: main.cpp

Revision:

0:baa08ea8b9ec

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 16 08:24:53 2021 +0000
@@ -0,0 +1,186 @@
+/**************************
+For high-voltage switching circuit test
+2016 Sep. 2-
+Hiroyuki Kajimoto
+***************************/
+
+#include "mbed.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+DigitalOut SN74LV595_DIN(p14);
+DigitalOut SN74LV595_RCLK(p13);
+DigitalOut SN74LV595_CLR(p12);
+DigitalOut SN74LV595_CLK(p11);
+DigitalIn  SN74LV595_DOUT(p10); //Shift register output, so normally it is not connected.
+
+//DAAD
+SPI spiDAAD(p5, p6, p7);     // mosi(master output slave input, miso(not connected), clock signal
+DigitalOut DA_sync(p8);        //chip select for AD5452
+DigitalOut AD_cs(p9);        //chip select for AD7276
+
+//Other I/O
+BusOut myleds(LED1, LED2, LED3, LED4);
+
+// stimulation mode
+#define DA_TEST 0xFA //sinusoidal wave mode to test DA
+
+int Mode = DA_TEST;
+
+const int ELECTRODE_NUM = 16;
+short stim_pattern[ELECTRODE_NUM] = { 0 };
+short impedance[ELECTRODE_NUM] = { 0 };
+
+Timer timer;
+
+bool AccessDeny = false;
+
+int i;
+int Freq = 100;
+int Voltage = 294;
+int TIME = 0;
+
+
+
+/******************************************************************************/
+/*
+ SN74LV595 Data Transfer
+ 2 bits are required for 1 electrode.
+ 00 OPEN
+ 10 GND
+ 01 HIGH
+ 11 SHORT
+ */
+/******************************************************************************/
+void SN74LV595FastScan(int usWhichPin)
+{
+    int ii, pin;
+    static int pos;
+
+    SN74LV595_RCLK = 0;
+    if (usWhichPin == 0) { //set 01（High)
+        SN74LV595_DIN = 0;
+        SN74LV595_CLK = 1;
+        SN74LV595_CLK = 0;
+        SN74LV595_DIN = 1;
+        SN74LV595_CLK = 1;
+        SN74LV595_CLK = 0;
+        pos = 0;
+    }
+    else { 
+        pin = usWhichPin - pos;
+        for (ii = 0; ii < pin; ii++) {//set 10 (GND)
+            SN74LV595_DIN = 1;
+            SN74LV595_CLK = 1;
+            SN74LV595_CLK = 0;
+            SN74LV595_DIN = 0;
+            SN74LV595_CLK = 1;
+            SN74LV595_CLK = 0;
+        }
+        pos = usWhichPin;
+    }
+    //Load S/R
+    SN74LV595_RCLK = 1;
+    SN74LV595_RCLK = 0;
+}
+
+/******************************************************************************/
+/*
+ SN74LV595 init & Clear
+ */
+/******************************************************************************/
+void SN74LV595Clear()
+{
+    SN74LV595_CLR = 0;
+    SN74LV595_RCLK  = 0;
+    SN74LV595_CLK = 0;
+    SN74LV595_CLK = 1;
+    SN74LV595_CLK = 0;
+    SN74LV595_CLR = 1;
+}
+
+void SN74LV595Init(int TotalPin)
+{
+    int ii;
+
+    SN74LV595_CLR = 1;
+    SN74LV595_CLK = 0;
+    SN74LV595_RCLK = 0;
+    for (ii = 0; ii < TotalPin; ii++) {
+        SN74LV595_DIN = 1;
+        SN74LV595_CLK = 1;
+        SN74LV595_CLK = 0;
+        SN74LV595_DIN = 0;
+        SN74LV595_CLK = 1;
+        SN74LV595_CLK = 0;
+    }
+    //Load S/R
+    SN74LV595_RCLK = 1;
+    SN74LV595_RCLK = 0;
+}
+
+
+/******************************************************************************/
+/*
+DA&AD at the same time, using the same SPI clock.
+DA output by AD5452(SPI)
+AD input by AD7276(SPI)
+ */
+/******************************************************************************/
+
+short DAAD(short DA)
+{
+    short AD;
+
+        //enable
+    DA_sync = 0;
+    AD_cs = 0;
+    //simultaneous DA and AD
+    AD = spiDAAD.write(DA << 2);
+    //disable
+    DA_sync = 1;
+    AD_cs = 1;
+
+    return AD >> 2;//bottom 2bits are unnecessary
+}
+
+void DAADinit()
+{
+    //Setup SPI, 16bit, falling edge, 48MHz clock
+    spiDAAD.format(16, 2);
+    spiDAAD.frequency(48000000);
+}
+
+
+int main()
+{
+    double t=0.0;
+    short AD;
+
+    DAADinit();
+    SN74LV595Init(ELECTRODE_NUM);
+    timer.start();
+
+
+    for (int t = 0; t < 8; t++) {
+        myleds = 1 << (t % 4);
+        wait(0.05);
+    }
+    myleds = 1;
+    while(1){
+
+             t = (double)timer.read_us() * 0.000001;
+             AD = DAAD((short)(Voltage * (1.0 + sin(2.0 * 3.1415926 * Freq * t))));
+             TIME = TIME +1;
+    if{TIME>1000){
+        double Freqdevided1 = 100*(rand()%3)/ Freq;//出力時間
+            double Freqdevided2 = 10*(rand()%10);//待機時間は配列でランダム(？)化
+            double Freqint1 = floor(Freqdevided1);//整数化
+            double Freqint2 = floor(Freqdevided2);
+            AD = DAAD(100*(3+rand()%3));
+            wait_ms(Freqint1);
+            AD = DAAD(0);
+            wait_ms(Freqint2);
+        }
+    }
+}