C2000 CAN RX

Dear All,

I am using Simulink to build a model to receive CAN messages. You can see diagram below. I am getting "error: expression must have struct or union type" error. Please help me. How can I solve that?

Thanks.

"ykarata1_BMS_C2000_RX_deneme.c", line 67: error: expression must have struct or union type

"ykarata1_BMS_C2000_RX_deneme.c", line 68: error: expression must have struct or union type

"ykarata1_BMS_C2000_RX_deneme.c", line 70: error: expression must have struct or union type

"ykarata1_BMS_C2000_RX_deneme.c", line 71: error: expression must have struct or union type

"ykarata1_BMS_C2000_RX_deneme.c", line 73: error: expression must have struct or union type

/* S-Function (scanunpack): '<S1>/CAN Unpack' */

65 {

66 /* S-Function (scanunpack): '<S1>/CAN Unpack' */

67 if ((1 == ykarata1_BMS_C2000_RX_deneme_B.eCANReceive_o2[0].Length) &&

68 (ykarata1_BMS_C2000_RX_deneme_B.eCANReceive_o2[0].ID != INVALID_CAN_ID)

69 ) {

70 if ((4 == ykarata1_BMS_C2000_RX_deneme_B.eCANReceive_o2[0].ID) && (0U ==

71 ykarata1_BMS_C2000_RX_deneme_B.eCANReceive_o2[0].Extended) ) {

72 (void) memcpy(&ykarata1_BMS_C2000_RX_deneme_B.CANUnpack,

73 ykarata1_BMS_C2000_RX_deneme_B.eCANReceive_o2[0].Data,

74 1 * sizeof(uint8_T));

75 }

76 }

77 }

[Erich Russenberger]

@Yusuf Selim KARATAS, did you solve this issue? I have the same now.. thanks.

Answer 1

[UDAYA PEDDIRAJU]

Hi Yusuf,

The error "expression must have struct or union type" in your Simulink model indicates a mismatch in data types.

To resolving it:

1. Ensure that ykarata1_BMS_C2000_RX_deneme_B.eCANReceive_o2[0] and ykarata1_BMS_C2000_RX_deneme_B.CANUnpack have compatible data structures.
2. Double-check that you're using correct indices to access elements within the eCANReceive_o2 array.
3. If necessary, cast data to the appropriate type using (struct *) or (union *).