12. jan. 2016 kl. 00.40 skrev Mark Webb-Johnson <mark@webb-johnson.net>:

Things to check:

1. That CANWRITE is really set to 1.
   
   
2. That you are running this in the car, not on your workbench. If workbench, make sure you have at least two CAN devices in active mode on the bus, and termination resistors in place. It won’t work with just the OVMS module on its own as CAN requires at least two active nodes on the network.
   
   
3. Example code:
   
   
   while (TXB0CONbits.TXREQ) {} // Loop until TX is done
   
   TXB0CON = 0;
   
   TXB0SIDL = 0b01000000; // Setup 0x102
   
   TXB0SIDH = 0b00100000; // Setup 0x102
   
   TXB0D0 = 0x06;
   
   TXB0D1 = 0x2c;
   
   TXB0D2 = 0x01;
   
   TXB0D3 = 0x00;
   
   TXB0D4 = 0x00;
   
   TXB0D5 = 0x09;
   
   TXB0D6 = 0x10;
   
   TXB0D7 = 0x00;
   
   TXB0DLC = 0b00001000; // data length (8)
   
   TXB0CON = 0b00001000; // mark for transmission
   
   while (TXB0CONbits.TXREQ) {} // Loop until TX is done

Regards, Mark.

On 12 Jan 2016, at 6:43 AM, Michael Balzer <dexter@expeedo.de> wrote:

Geir,

do you set the data length (TXB0DLC)?

Regards,
Michael

Am 11.01.2016 um 22:50 schrieb Geir Øyvind Vælidalo:

Hi guys!

I’m trying to send a can-messages. I copied the code from the Twizy-code, but it seems to fail for me.

This is the code for sending: 

while (TXB0CONbits.TXREQ) {}; <— This one is ok

TXB0CON = 0; TXB0SIDL = (ks_send_can.id & 0x07) << 5; 

TXB0SIDH = (ks_send_can.id >> 3); 

TXB0D0 = ks_send_can.byte[0]; 

TXB0D1 = ks_send_can.byte[1];

...

    TXB0CON = 0b00001000;  //Mark the message for sending

while (TXB0CONbits.TXREQ) {};  <— Here it hangs

TXREQ seems like it never gets cleared :-\ I have CAN Write enabled, so that is not the problem.

Any ideas? 

Best regards,

Geir

 

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