Hi Daniella, I'm using the 2294 and have used two of the four CAN modules without any problem. Here's the code I have used to set it up, you should hopefully be able to see what's needed to initialise. May well be basically what you've done, but it's worth a look! Cheers, Rob - // Ensure the write enable bit is set CAN1MOD |= 1; // sic // Switch off the acceptance filters, we want to read everything! :-) AFMR |= 2; // Make sure the pins are enabled for the CAN modules (check this) PINSEL1 |= 0x00054000; // Set up the CAN timimg to be 60Mhz pclk / 6 to give 10M clock, with ten clocks per bit // TSEG 1 = 4 (reg val 3) TSEG2 = 5 (4), SJW = 1 (0) and SAM = 1 (0) // This gives ten clocks per bit which is 10MHz/10 = 1MHz CAN bus rate CAN1BTR = 0x430005; // Disable All Interrupts (alter this to enable transmit and receive...) CAN1IER |= 0x01; // Set CAN1 transmit 1 for 11 bit ID CAN1TFI1 |= 0x80000000; // Setup the CAN1 module: enable it, set dominant bit polarity etc. CAN1MOD = 0; // sic // Now set up channel 2 // Ensure the write enable bit is set CAN2MOD |= 1; // sic // Set up the CAN timimg to be 60Mhz pclk / 6 to give 10M clock, with ten clocks per bit // TSEG 1 = 4 (reg val 3) TSEG2 = 5 (4), SJW = 1 (0) and SAM = 1 (0) // This gives ten clocks per bit which is 10MHz/10 = 1MHz CAN bus rate CAN2BTR = 0x430005; // Disable All Interrupts (alter this to enable transmit and receive...) CAN2IER |= 0x01; // Set CAN2 transmit 1 for 11 bit ID CAN2TFI1 |= 0x80000000; // Setup the CAN2 module: enable it, set dominant bit polarity etc. CAN2MOD = 0; // sic -------------- --- In , "daniela_boyo" <dob3@l...> wrote: > > Hi everyone, > > I'm having some problems using the 2nd CAN controller network on the > LPC2129 ARM board. So far I have successfully used the 1st CAN > controller and I'm now trying to incoorporate the 2nd one. I'm using > the same code as the 1st one except that I have changed the PINSEL1 > register as follows: > > // Enable pins for selected CAN port 2 > PINSEL1 |= 0x00014000L; // Set bits 14 and 16 > > and all the CAN registers from 1 to 2. > > Is there anything else that I am missing out that needs to be done in > software? > > Any help would be greatly appreciated. > > Thank you! > Daniela. |