topic S32K148 CAN in S32K

S32K148 CAN

gravity_one — Wed, 06 Nov 2019 03:24:18 GMT

hi，dear

i new build can_pal_s32k148 example (sdk3.0),i replace (can_pal1.c) CAN_NORMAL_MODE to CAN_LOOPBACK_MODE,i press button(sw3 sw4), led0 or led1 not toggle;

use hardware:s32k148evb-q176

please help me!

Re: S32K148 CAN

PetrS — Thu, 07 Nov 2019 07:36:37 GMT

Hi,

this example configures 1 TX MB and 1 RX MB with different IDs, exact match is expected. If you set loopback mode, message is received, but does not match with configured ID, so it is not stored into RX MB and no LED can be toggled.

Try to simple configure same ID for both MBs, for example use

#define RX_MSG_ID (1UL)

BR, Petr

Re: S32K148 CAN

gravity_one — Wed, 20 Nov 2019 07:48:54 GMT

hi，

how to add CAN ID filter？

uint32_t id_filter_table[]={0x001,0x002,0x003,0x004,0x022};
void CAN_id_filter(uint8_t instance)
{
for(int i=0;i<sizeof(id_filter_table);i++)
FLEXCAN_DRV_SetRxMbGlobalMask(instance,FLEXCAN_MSG_ID_STD,id_filter_table[i]);
}

is right？

I test，it receive all can ID，why？

Re: S32K148 CAN

PetrS — Wed, 20 Nov 2019 11:59:51 GMT

Hi,

you can refer to below example

https://community.nxp.com/docs/DOC-343091

it shows usage of RXFIFO and ID table in the SDK.

BR, Petr