Hi,
I am working on CAN in KEA-128.I wrote a small code to receive data in CAN.please tell me what i am missing in this and what should i add in this to get my receive as working.Please give solutions based on my code
#include "derivative.h" /* include peripheral declarations */
#include "CLK.h"
void MSCAN_init();
UINT8 i=0;
UINT16 rx_buffer[8];
int main(void)
{
Clk_Init(); //20Mhz frequency
MSCAN_init();
MSCAN_CANRIER = 0x80; //receive interrupt enabled
MSCAN_RSIDR0 = 0x01; // identifier register
MSCAN_RSIDR1 = 0x01; // standard id,data frame, standard identifier format
MSCAN_RDLR = 0x10; // data length 1 byte
for(;;) {
}
return 0;
}
void MSCAN_init()
{
SIM_PINSEL1 &= ~SIM_PINSEL1_MSCANPS_MASK; /* Selected PTC7 and PTC6 ******/
SIM_SCGC |= SIM_SCGC_MSCAN_MASK ; /* Clock enabled to CAN0 *******/
MSCAN_CANCTL1 |= MSCAN_CANCTL1_CANE_MASK; /* Enable CAN mode ************/
MSCAN_CANCTL0 |= MSCAN_CANCTL0_INITRQ_MASK; /* Enable INIT mode ************/
MSCAN_CANCTL1 |= MSCAN_CANCTL1_INITAK_MASK; /* Enable INIT mode ************/
while ((MSCAN_CANCTL1&0x01)!=1); /* wait for initialization mode */
MSCAN_CANCTL0 |= MSCAN_CANCTL0_TIME_MASK; /* time stamping */
MSCAN_CANCTL1 |= MSCAN_CANCTL1_CLKSRC_MASK; /* Enable CLK source ***********/ //not for time stamping(internal clock
MSCAN_CANBTR0 = 0x01; /* prescaler set to 2 **********/
MSCAN_CANBTR1=0x3E; /* SEG SEG1 SEG2 ***************/ //(generates 500 Kbps)
/******************* receive initialization **********************************/
MSCAN_CANIDAC = 0x40; /* 8 bit acceptaance filter */
MSCAN_CANCTL0 &= ~MSCAN_CANCTL0_INITRQ_MASK; /* Disable INIT mode ***********/
MSCAN_CANCTL1 &= ~MSCAN_CANCTL1_INITAK_MASK; /* Disable INIT mode ***********/
while ((MSCAN_CANCTL1&0x00) != 0); /**** wait for normal board *******/
}
void MSCAN_Rx_IRQHandler(void){
if((MSCAN_CANRFLG & 0x80)== 1) // indicating message received
{
UINT8 rx= (MSCAN_CANIDAC & 0xE0);
rx_buffer[i] = rx;
i++;
MSCAN_CANRFLG = 0x01; /* Clear RXF */
}
}
