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Nucleo by Cach
Dependencies: C12832 CANnucleo LM75B mbed
Fork of CANnucleo_Hello by
Diff: main.cpp
- Revision:
- 2:49c9430860d1
- Parent:
- 1:267d6288df33
- Child:
- 3:464b06c16d24
--- a/main.cpp Sun Jul 19 14:12:34 2015 +0000 +++ b/main.cpp Thu Jul 23 13:11:08 2015 +0000 @@ -1,7 +1,7 @@ /* * An example showing how to use the CANnucleo library: * - * Two NUCLEO boards are connected to the same CAN bus via CAN transceivers (MPC2551 or TJA1040, or etc.). + * Two NUCLEO boards are connected to the same CAN bus via CAN transceivers (MCP2551 or TJA1040, or etc.). * Transceivers are not part of the NUCLEO boards, therefore must be added by you. * Remember also that CAN bus must be terminated with 120 Ohm resitors on both ends. * See <https://developer.mbed.org/users/WiredHome/notebook/can---getting-started/> @@ -36,7 +36,7 @@ CAN can(PA_11, PA_12); // rx, tx CANMessage rxMsg; CANMessage txMsg; -long int counter; +long int counter = 0; volatile bool msgAvailable = false; /** @@ -61,10 +61,10 @@ can.attach(&onMsgReceived, CAN::RxIrq); // attach 'CAN receive complete' interrupt handler timer.reset(); #if defined(BOARD1) - led = 1; - timer.start(); + led = 1; + timer.start(); #else - led = 0; + led = 0; #endif while(1) { @@ -78,15 +78,23 @@ txMsg << led.read(); // append second data item (always make sure that CAN message total data lenght <= 8 bytes!) can.write(txMsg); // transmit message printf("CAN message sent\r\n"); - led = 0; // turn off led + led = 0; // turn off LED } if(msgAvailable) { msgAvailable = false; // reset flag for next use can.read(rxMsg); // read message into Rx message storage - printf("CAN message with ID = %x received\r\n", rxMsg.id); + printf("CAN message received:\r\n"); + printf(" ID = %#x\r\n", rxMsg.id); + printf(" Type = %d\r\n", rxMsg.type); + printf(" Format = %d\r\n", rxMsg.format); + printf(" Length = %d\r\n", rxMsg.len); + printf(" Data ="); + for(int i = 0; i < rxMsg.len; i++) + printf(" %x", rxMsg.data[i]); + printf("\r\n"); if(rxMsg.id == RX_ID) { // if ID matches rxMsg >> counter; // extract first data item - rxMsg >> led; // extract second data item (and set led status) + rxMsg >> led; // extract second data item (and set LED status) printf("counter = %d\r\n", counter); timer.start(); }