Diff: main.cpp

Revision:

0:d3e39839c3e3

Child:

1:d31ce42d53a1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Nov 05 23:00:35 2013 +0000
@@ -0,0 +1,52 @@
+#include "mbed.h"
+#include "seeed_can.h"
+
+SEEED_CAN CAN(SEEED_CAN_CS);                                            // Seeed Studios' CAN-BUS Shield
+Serial pc(USBTX, USBRX);                                                // USB serial port TTYACM0
+
+Ticker minute;
+Timer timestamp;
+
+void resetTimestamp()
+{
+    timestamp.reset();
+}
+
+int main()
+{
+    SEEED_CANMessage canMsg;
+
+    printf("Seeed Studios CAN-BUS Shield 'Hello World' program :-)\r\n");
+    timestamp.start();
+    minute.attach(&resetTimestamp, 60.0);                               // Reset the 'Timestamp' timer every minute
+    CAN.frequency(500000);                                              // init can bus, baudrate: 500k
+    CAN.Mask(0, 0x7FF);                                                 // init Masks
+    CAN.Mask(1, 0x7FF, CANStandard);                                    // init Masks
+    CAN.Filter(0, 0x7E8);                                               // init filters - 0x7E8 T8 ECU id
+    while (CAN.read(canMsg));                                           // Empty any unfiltered messages in the receive buffers
+// Read and Display the VIN code stored in a GMLAN ECU
+    char VIN[18] = {NULL};
+// Request VIN using ReadDataByIdentifier method using DID
+    char reqvin[] = {0x02,0x1A,0x90,0x00,0x00,0x00,0x00,0x00};
+    CAN.write(SEEED_CANMessage(0x7E0, reqvin));
+    while (!(CAN.read(canMsg) && (canMsg.id == 0x7E8)));
+    memcpy(VIN+0, canMsg.data+4, 4);
+// Send Trionic8 a "Flow Control Message to get the rest of the VIN
+    char floctl[] = {0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+    CAN.write(SEEED_CANMessage(0x7E0, floctl));
+    while (!(CAN.read(canMsg) && (canMsg.id == 0x7E8)));
+    memcpy(VIN+4, canMsg.data+1, 7);
+    while (!(CAN.read(canMsg) && (canMsg.id == 0x7E8)));
+    memcpy(VIN+11, canMsg.data+1, 6);
+    printf("VIN code: %s\r\n",VIN);
+// Display all messages on the CAN-BUS
+    CAN.Mask(0, NULL);                                                  // Clear the mask to accept all meassages
+    while (1) {
+        if (CAN.read(canMsg)) {
+            printf("*** T%05dI%03xL%dD", timestamp.read_ms(), canMsg.id, canMsg.len);
+            for (uint32_t i=0; i<canMsg.len; i++)
+                printf("%02x", canMsg.data[i]);
+            printf(" ***\r");
+        }
+    }
+}