Dear all,
I am using the example code can_pal in S32K148 folder from the downloaded S32_SDK_S32K1xx_RTM_4.0.3.
My requirement is to get CAN1 through (PTC6 & PTC7) to work with TJA1050 CAN bus module. My connection is as shown below.
Tested with the original code using CAN0, I can receive message on the console S32K144EVB. For CAN1, I have changed the instance index, define the number of flexcan, configured the pins but it is not working. I observe PTC6 and PTC7 with oscilloscope and no waveform. Below is my code and what I have changed:
I have added a source code file and a header file:
1) peripherals_can_pal2.c and peripherals_can_pal2.h
/*can_instance_t can_pal1_instance = {
.instType = CAN_INST_TYPE_FLEXCAN,
.instIdx = 0UL
};*/
can_instance_t can_pal2_instance = {
.instType = CAN_INST_TYPE_FLEXCAN,
.instIdx = 1UL
};
const can_user_config_t can_pal2_Config0 = {
.maxBuffNum = 2UL,
.mode = CAN_NORMAL_MODE,
.peClksrc=CAN_CLK_SOURCE_OSC,
.enableFD = true,
.payloadSize = CAN_PAYLOAD_SIZE_16,
.nominalBitrate = {
.propSeg = 7UL,
.phaseSeg1 = 4UL,
.phaseSeg2 = 1UL,
.preDivider = 0UL,
.rJumpwidth = 1UL
},
.dataBitrate = {
.propSeg = 3UL,
.phaseSeg1 = 1UL,
.phaseSeg2 = 1UL,
.preDivider = 0UL,
.rJumpwidth = 1UL
},
.extension = NULL
};
I have modified the code in 3 different files:
1) can_pal_cfg.h
I have defined for both definition because I needed to use both CAN0 and CAN1.
#define CAN_OVER_FLEXCAN 2
#define NO_OF_FLEXCAN_INSTS_FOR_CAN 2
2) pin_mux.c
I have included the below code in the array to configure CAN1 (PTC6 & PTC7).
{
.base = PORTC,
.pinPortIdx = 6U,
.pullConfig = PORT_INTERNAL_PULL_NOT_ENABLED,
.driveSelect = PORT_LOW_DRIVE_STRENGTH,
.passiveFilter = false,
.mux = PORT_MUX_ALT3,
.pinLock = false,
.intConfig = PORT_DMA_INT_DISABLED,
.clearIntFlag = false,
.gpioBase = NULL,
.digitalFilter = false,
},
{
.base = PORTC,
.pinPortIdx = 7U,
.pullConfig = PORT_INTERNAL_PULL_NOT_ENABLED,
.driveSelect = PORT_LOW_DRIVE_STRENGTH,
.passiveFilter = false,
.mux = PORT_MUX_ALT3,
.pinLock = false,
.intConfig = PORT_DMA_INT_DISABLED,
.clearIntFlag = false,
.gpioBase = NULL,
.digitalFilter = false,
},
3) main.c
int main(void)
{
/* Do the initializations required for this application */
BoardInit();
GPIOInit();
CAN_Init(&can_pal2_instance, &can_pal2_Config0);
while(1)
{
/******************************************************************************
* CAN Transmit
******************************************************************************/
/* Set information about the data to be sent
* - Standard message ID
* - Bit rate switch enabled to use a different bitrate for the data segment
* - Flexible data rate enabled
* - Use zeros for FD padding
*/
can_buff_config_t buffCfg = {
.enableFD = true,
.enableBRS = true,
.fdPadding = 0U,
.idType = CAN_MSG_ID_STD,
.isRemote = false
};
/* Configure TX buffer with index TX_MAILBOX*/
CAN_ConfigTxBuff(&can_pal2_instance, TX_MAILBOX_0, &buffCfg);
/* Prepare message to be sent */
can_message_t message = {
.cs = 0U,
.id = TX_MSG_ID_0, // 0x5BC
//.data = {0x23, 0xDE, 0x84, 0xD7, 0xA0, 0xF6, 0x41, 0xF3},
//.length = 8U
.data = {0xAA},
.length = 1U
};
/* Send the information via CAN */
/* 0x5BC */
CAN_Send(&can_pal2_instance, TX_MAILBOX_0, &message);
for (int i = 0; i<10000000; i++){}
}
for(;;) {
if(exit_code != 0) {
break;
}
}
return exit_code;
}
Kindly feedback to me, thank you in advance.
Regards,
KC.
Hi,
I overlooked you have RTM403 so is using S32DS3.4 probably. In this case ConfigTools are used instead of Processor Expert.
So do changes in Peripherals and Pins Config tools and click on Update Code
BR, Petr
Hi Petr,
I am using S32DS3.5 to be precised.
I did try the method you mentioned. I have changed the pin configurations and peripherals using ConfigTools and update the code ONLY for the pins and peripherals.
I have made changes in the main file so that it will configure and receive based on CAN1 but still unable to get any data on S32K144EVB.
Regards,
KC.
