Revision 11:e837b1a581cb, committed 2020-09-06

Comitter:

jeanpierreaulas

Date:

Sun Sep 06 19:36:44 2020 +0000

Parent:

10:eadd73cf3981

Commit message:

add CANJpa.h

Changed in this revision

diff -r eadd73cf3981 -r e837b1a581cb CANJpa/CANJpa.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CANJpa/CANJpa.h	Sun Sep 06 19:36:44 2020 +0000
@@ -0,0 +1,90 @@
+#ifndef CANJpa_H
+#define CANJpa_H
+
+extern Serial              pc(PA_2, PA_3);
+extern CAN                 can(PA_2, PA_3);  // CAN Rx pin name, CAN Tx pin name
+//CAN                 can(p30, p29);  // CAN Rx pin name, CAN Tx pin name
+CANMsg              rxMsg;
+CANMsg              txMsg;
+
+uint8_t             counter = 0;
+AnalogIn            analogIn(A0);
+float               voltage;
+Timer               timer;
+DigitalOut          led(LED_PIN);
+
+/**
+ * @brief   Prints CAN message to PC's serial terminal
+ * @note
+ * @param   CANMessage to print
+ * @retval
+ */
+void printMsgCan(CANMessage& msg)
+{
+    pc.printf("  ID      = 0x%.3x\r\n", msg.id);
+    pc.printf("  Type    = %d\r\n", msg.type);
+    pc.printf("  Format  = %d\r\n", msg.format);
+    pc.printf("  Length  = %d\r\n", msg.len);
+    pc.printf("  Data    =");
+    for(int i = 0; i < msg.len; i++)
+        pc.printf(" 0x%.2X", msg.data[i]);
+    pc.printf("\r\n");
+}
+
+
+/**
+ * @brief   Handles received CAN messages
+ * @note    Called on 'CAN message received' interrupt.
+ * @param
+ * @retval
+ */
+void onCanReceived(void)
+{
+    can.read(rxMsg);
+    pc.printf("-------------------------------------\r\n");
+    pc.printf("CAN message received\r\n");
+    printMsgCan(rxMsg);
+
+    if (rxMsg.id == RX_ID) {
+        // extract data from the received CAN message 
+        // in the same order as it was added on the transmitter side
+        rxMsg >> counter;
+        rxMsg >> voltage;    
+        pc.printf("  counter = %d\r\n", counter);
+        pc.printf("  voltage = %e V\r\n", voltage);
+    }
+    timer.start(); // to transmit next message in main
+}
+
+void can_write()
+    {
+            counter++;                   // increment counter
+            voltage = analogIn * 3.3f;   // read the small drift voltage from analog input
+            txMsg.clear();               // clear Tx message storage
+            txMsg.id = TX_ID;            // set ID
+            // append data (total data length must not exceed 8 bytes!)
+            txMsg << counter;   // one byte
+            txMsg << voltage;   // four bytes
+             
+            if(can.write(txMsg)) {       // transmit message
+                led = OFF;               // turn the LED off
+                pc.printf("-------------------------------------\r\n");
+                pc.printf("-------------------------------------\r\n");
+                pc.printf("CAN message sent\r\n");
+                printMsgCan(txMsg);
+                pc.printf("  counter = %d\r\n", counter);
+                pc.printf("  voltage = %e V\r\n", voltage);
+            }
+            else
+                pc.printf("Transmission error\r\n");
+      }
+          
+void init_can()
+    {
+    can.frequency(1000000); // set CAN bit rate to 1Mbps
+    can.filter(RX_ID, 0xFFF, CANStandard, 0); // set filter #0 to accept only standard messages with ID == RX_ID
+    can.attach(onCanReceived);                // attach ISR to handle received messages   
+    pc.printf("CAN_Hello board start\r\n");
+    }
+
+#endif // CANJpa_H
\ No newline at end of file

diff -r eadd73cf3981 -r e837b1a581cb main.cpp
--- a/main.cpp	Sun Sep 06 17:42:37 2020 +0000
+++ b/main.cpp	Sun Sep 06 19:36:44 2020 +0000
@@ -29,70 +29,17 @@
     const int           OFF = 0;
     const int           ON = 1;
 #endif
-
-#if defined(BOARD1)
-    const unsigned int  RX_ID = 0x100;
-    const unsigned int  TX_ID = 0x101;
-#else
     const unsigned int  RX_ID = 0x101;
     const unsigned int  TX_ID = 0x100;
-#endif
 
 #include "mbed.h"
 #include "CANMsg.h"
-
-Serial              pc(PA_2, PA_3);
-CAN                 can(PA_2, PA_3);  // CAN Rx pin name, CAN Tx pin name
-//CAN                 can(p30, p29);  // CAN Rx pin name, CAN Tx pin name
-CANMsg              rxMsg;
-CANMsg              txMsg;
-DigitalOut          led(LED_PIN);
-Timer               timer;
-uint8_t             counter = 0;
-AnalogIn            analogIn(A0);
-float               voltage;
+#include "CANJpa.h"
 
-/**
- * @brief   Prints CAN message to PC's serial terminal
- * @note
- * @param   CANMessage to print
- * @retval
- */
-void printMsg(CANMessage& msg)
-{
-    pc.printf("  ID      = 0x%.3x\r\n", msg.id);
-    pc.printf("  Type    = %d\r\n", msg.type);
-    pc.printf("  Format  = %d\r\n", msg.format);
-    pc.printf("  Length  = %d\r\n", msg.len);
-    pc.printf("  Data    =");
-    for(int i = 0; i < msg.len; i++)
-        pc.printf(" 0x%.2X", msg.data[i]);
-    pc.printf("\r\n");
-}
+//Serial              pc(PA_2, PA_3);
 
-/**
- * @brief   Handles received CAN messages
- * @note    Called on 'CAN message received' interrupt.
- * @param
- * @retval
- */
-void onCanReceived(void)
-{
-    can.read(rxMsg);
-    pc.printf("-------------------------------------\r\n");
-    pc.printf("CAN message received\r\n");
-    printMsg(rxMsg);
-
-    if (rxMsg.id == RX_ID) {
-        // extract data from the received CAN message 
-        // in the same order as it was added on the transmitter side
-        rxMsg >> counter;
-        rxMsg >> voltage;    
-        pc.printf("  counter = %d\r\n", counter);
-        pc.printf("  voltage = %e V\r\n", voltage);
-    }
-    timer.start(); // to transmit next message in main
-}
+void init_can();
+void can_write();
 
 
 /**
@@ -104,41 +51,15 @@
 int main(void)
 {
     pc.baud(9600);          // set serial speed
-    can.frequency(1000000); // set CAN bit rate to 1Mbps
-    can.filter(RX_ID, 0xFFF, CANStandard, 0); // set filter #0 to accept only standard messages with ID == RX_ID
-    can.attach(onCanReceived);                // attach ISR to handle received messages
-
-#if defined(BOARD1)
+    init_can();
     led = ON;               // turn the LED on
     timer.start();          // start timer
-    pc.printf("CAN_Hello board #1\r\n");
-#else
-    led = OFF;      // turn LED off
-    pc.printf("CAN_Hello board #2\r\n");
-#endif
     while(1) {
         if(timer.read_ms() >= 2000) {    // check for timeout
             timer.stop();                // stop timer
             timer.reset();               // reset timer
-            counter++;                   // increment counter
-            voltage = analogIn * 3.3f;   // read the small drift voltage from analog input
-            txMsg.clear();               // clear Tx message storage
-            txMsg.id = TX_ID;            // set ID
-            // append data (total data length must not exceed 8 bytes!)
-            txMsg << counter;   // one byte
-            txMsg << voltage;   // four bytes
-             
-            if(can.write(txMsg)) {       // transmit message
-                led = OFF;               // turn the LED off
-                pc.printf("-------------------------------------\r\n");
-                pc.printf("-------------------------------------\r\n");
-                pc.printf("CAN message sent\r\n");
-                printMsg(txMsg);
-                pc.printf("  counter = %d\r\n", counter);
-                pc.printf("  voltage = %e V\r\n", voltage);
-            }
-            else
-                pc.printf("Transmission error\r\n");
+            can_write();
+
         }
     }
 }