CAN Nachrichten auf LPC2194 senden

#include "LPC21XX.H"

#include "UART.h"

void sendCanMsg(){

  // Configure Controller

  C2MOD = 0x00000001;     //Set CAN controller into reset

//  C2BTR = 0x001C001D;     //Set bit timing to 125k@60MHz FPCLK, SP - 87,5%

  C2BTR = 0x00398007;     //Set bit timing to 500k@60MHz FPCLK, SP - 75%

  C2MOD = 0x00000000;     //Release CAN controller

        // Send message if buffer is free

  if(C2SR & 0x00000004){     //See if Tx Buffer 1 is free

    UARTSendString("Tx Buffer is free \n\r");

    unsigned int test;

    test = 0xFFFF0000;

    C2TFI1 = 0x00040000;   //Set DLC to 4 bytes

    C2TID1 = 0x00000022;   //Set address to 0x22 Standard Frame

    C2TDA1 = test;       //Copy some data into first four bytes

    C2CMR =  0x00000021;   //Transmit the message, setting TxBuf1 + Send Request

    UARTSendString("Message should be sent now \n\r");

  } else {

    UARTSendString("Tx Buffer is not free \n\r");

  }

}

int main(void) {

  PINSEL1 = 0x14000;      //Set CAN2 Rx + Tx Pins

  VPBDIV = 0x01;        //Set peripheral Clock to PCLK (=60MHz)

  UARTInit();          // Init UART

  UARTSendString("------ Start ----- \n\r");

  sendCanMsg();

}