This 'Hello World' program uses many of the SEEED_CAN library functions to display the VIN number stored in a GMLAN ECU then display all CAN messages on the CAN-BUS.
Fork of Seeed_CAN_Hello_World by
main.cpp
- Committer:
- Just4pLeisure
- Date:
- 2013-11-05
- Revision:
- 0:d3e39839c3e3
- Child:
- 1:d31ce42d53a1
File content as of revision 0:d3e39839c3e3:
#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"); } } }