S32K中的主题 Re: Can_tx_rx same time

Can_tx_rx same time

intern_praveena — Tue, 30 Apr 2019 09:46:36 GMT

How can transmit and receive at a time?? I am using CAN_PAL.Here is my code,CAN any one help me??

/*************************************/

CAN_Init(INST_CAN_PAL1, &can_pal1_Config0); //CAN intialize

can_buff_config_t tx_buff = {
.enableFD = false,
.enableBRS = true,
.fdPadding = 0U,
.idType = CAN_MSG_ID_EXT,
.isRemote = false
};

CAN_ConfigTxBuff(INST_CAN_PAL1,0,&tx_buff);

can_message_t tx_msg = {
// .cs = 0U,
.id = 0x01,
.data[0] = 0x02,
.data[1] = 0x04,
.data[2] = 0x08,
.length = 3
};
can_buff_config_t rx_buff = {
.enableFD = 0,
.enableBRS = true,
.fdPadding = 0U,
.idType = CAN_MSG_ID_EXT,
.isRemote = false
};

CAN_ConfigRxBuff(INST_CAN_PAL1,0,&rx_buff,1);

can_message_t rx_msg = {
//.cs = 0U,
.id = 1,
.length = 2

};

while(1)
{
CAN_Send(INST_CAN_PAL1,0,&tx_msg);
CAN_Receive(1,0,&rx_msg);

}

/****************************************/

Re: Can_tx_rx same time

vinothkumars — Thu, 02 May 2019 09:30:19 GMT

Praveena,

What is the result, did you check send and receive separately?

Is there any packet loss, which address mode and what is the frequency?

Please provide the full file also.

Re: Can_tx_rx same time

alexandrunan — Fri, 03 May 2019 11:25:09 GMT

On which chip and what sdk version you use ?

Second what configuration was applied to CAN_Init ? Because from your configuration of tx message buffer is something not right, becasue brs and fd must be enable else the function will return status error. in your code first I suggest to check the function status return in case something is wrong or missconfigured.

And the major issue is that the Pal function requires a structure as parameter that identify the structure type and instance number not a macro defined as symbol for instance no.

CAN_Init(INST_CAN_PAL1, &can_pal1_Config0);

This is correct only if you defined the symbol INST_CAN_PAL1 as address to the structure.