François .
/
cantestpassOK
main.cpp
- Committer:
- bouguereau
- Date:
- 2011-08-24
- Revision:
- 0:331ddba1e888
File content as of revision 0:331ddba1e888:
#include "mbed.h" #include "CAN.h" Ticker ticker; DigitalOut led1(LED1); DigitalOut led2(LED2); LocalFileSystem local("local"); // CAN_RS pin at Philips PCA82C250 can bus controller. // activate transceiver by pulling this pin to GND. // (Rise and fall slope controlled by resistor R_s) // (+5V result in tranceiver standby mode) // For further information see datasheet page 4 DigitalOut can_Pca82c250SlopePin(p28); // second can controller on these pins. Not used here. // CAN can1(p9, p10); // We use can on mbed pins 29(CAN_TXD) and 30(CAN_RXD). CAN can2(p30, p29); char trames[250]; //int j = 0; void send() { static char counter = 0; if (can2.write(CANMessage(0x300, &counter, 1))) { printf("CanTx--> id: 0x200 dlc: 1 data: %x\n\r", counter); counter++; } // toggle led1 after every transmission led1 = !led1; } int main() { FILE *test1 = fopen("/local/test.txt", "w"); bool flag = false; // 500kbit/s can2.frequency(500000); // activate external can transceiver can_Pca82c250SlopePin = 0; // every 500ms ticker.attach(&send, 0.5); /// create message object for message reception CANMessage can_MsgRx; while (flag!=true) { // send received messages to the pc via serial line (9k6, 8n1) if (can2.read(can_MsgRx)) { led2 = !led2; flag = true; } } fprintf(test1,"\n%d-%d-%c%c%c%c%c%c%c%c",can_MsgRx.len,can_MsgRx.id,can_MsgRx.data[0],can_MsgRx.data[1],can_MsgRx.data[2],can_MsgRx.data[3],can_MsgRx.data[4],can_MsgRx.data[5],can_MsgRx.data[6],can_MsgRx.data[7]); fclose(test1); }