Revision 0:acfa22f2dc3a, committed 2020-07-30

Comitter:

sashida_h

Date:

Thu Jul 30 10:34:13 2020 +0000

Commit message:

initial commit

Changed in this revision

diff -r 000000000000 -r acfa22f2dc3a main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jul 30 10:34:13 2020 +0000
@@ -0,0 +1,109 @@
+/*
+CAN通信master側
+2種類のIDで送信する．
+rd - RXD
+td - TXD
+MCP2551まわりは以下参照(終端Rは410ohmを使った，そこにあったので)
+https://raw.githubusercontent.com/rummanwaqar/teensy_can/master/schematic.png
+*/
+#include "mbed.h"
+
+Serial pc(PA_9, PA_10, 115200); //pin19,20 TX,RX
+CAN can(PA_11, PA_12,100000); //pin21,22 rd,td
+DigitalOut myled(PB_1); //pin15
+Ticker ticker;
+
+CANMessage msg;
+
+AnalogIn L1(PA_0);
+AnalogIn L2(PA_1);
+AnalogIn L3(PA_3);
+AnalogIn L4(PA_4);
+AnalogIn L5(PA_5);
+
+union Float2Byte{
+    float _float;
+    char _byte[4];
+};
+typedef union Float2Byte Float2Byte;
+
+void send(float senddata,int id){
+    //pc.printf("Master send()\n\r");
+    
+    /*ID: 0x01*/
+    Float2Byte sendFloat;
+    sendFloat._float = senddata;
+    //ここに送りたい値を入れる．
+    
+    char serialData[4];
+    for(int i=0;i<4;++i){
+        serialData[i] = sendFloat._byte[i];
+        //pc.printf("send_char: %d\n\r", serialData[i]);
+    }
+    //pc.printf("sendFloat: %f\n\r", sendFloat._float);
+    if(can.write(CANMessage(id, serialData, 4))){
+        pc.printf("Send.\n\r");
+    } 
+    
+    
+    myled = !myled;
+}
+
+void receive(){
+    Float2Byte getFloat;
+    
+    if(can.read(msg)){
+        /*ID: 0x01*/
+        if(msg.id == 0x01){
+            //pc.printf("ID: 0x01\n\r");
+            for(int i=0;i<4;++i){
+                getFloat._byte[i] = msg.data[i];
+                //pc.printf("get_char: %d\n\r", getFloat._byte[i]);
+            }
+            pc.printf("%.2f\r\n", getFloat._float);
+            myled = !myled;
+        }
+        /*ID: 0x02*/
+        if(msg.id == 0x02){
+            //pc.printf("ID: 0x02\n\r");
+            for(int i=0;i<4;++i){
+                getFloat._byte[i] = msg.data[i];
+                //pc.printf("get_char: %d\n\r", getFloat._byte[i]);
+            }
+            pc.printf("avarage: %.0f\n\r", getFloat._float);
+            myled = !myled;
+        }
+    }
+}
+
+int main(){
+    float meas_r[5];
+    float meas_v[5];
+    float sum = 0.0;
+    int i;
+    
+    pc.printf("Master_start.\n\r");
+    //ticker.attach(&send, 1);
+    can.attach(receive, CAN::RxIrq);
+    while(1) {
+        sum = 0.0;
+
+        meas_r[0] = L1.read();
+        meas_r[1] = L2.read();
+        meas_r[2] = L3.read();
+        meas_r[3] = L4.read();
+        meas_r[4] = L5.read();
+
+        for(i=0;i<5;i++){    
+            meas_v[i] = meas_r[i] * 3300; // Converts value in the 0V-3.3V range
+            //pc.printf("%d:%.0f,", i+1,meas_v[i]);
+            //send(meas_v[i],0x01);
+            sum += meas_v[i];
+            //wait(0.05);
+            
+        }
+        wait(0.1);
+        pc.printf("%.0f\r\n",sum/5.0);
+        send(0,0x01);
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r acfa22f2dc3a mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Jul 30 10:34:13 2020 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file