FDCAN filter configuration to receive the ID 0x002 only

[dqsh06]

hello @mƎALLEm ,

as you sugestted, i only want to receive a ID 0x002, so my code is like

// 设置接收过滤器
 FDCAN_FilterTypeDef sFilterConfig;
 sFilterConfig.IdType = FDCAN_STANDARD_ID;
 sFilterConfig.FilterIndex = 0;
 sFilterConfig.FilterType = FDCAN_FILTER_MASK;
 sFilterConfig.FilterConfig = FDCAN_FILTER_TO_RXFIFO0;
 sFilterConfig.FilterID1 = 0x002; // 设置过滤器ID1
 sFilterConfig.FilterID2 = 0x7ff; // 设置过滤器ID2
 if (HAL_FDCAN_ConfigFilter(&hfdcan1, &sFilterConfig) != HAL_OK)
 {
 Error_Handler();
 }

 if(HAL_FDCAN_ConfigGlobalFilter(&hfdcan1, FDCAN_REJECT, FDCAN_REJECT, FDCAN_FILTER_REMOTE, FDCAN_FILTER_REMOTE) != HAL_OK)
 {
 Error_Handler();
 }

but now, i can not receive any message.

when i not add 

HAL_FDCAN_ConfigGlobalFilter()

i can receive every message.

 

but i only want to receive 0x002.

 

how should i do?

 

thanks.

 

[dqsh06]

hello, 

i got the solution.

1. the filter setting as below

 // 设置接收过滤器
 FDCAN_FilterTypeDef sFilterConfig;
 sFilterConfig.IdType = FDCAN_STANDARD_ID;
 sFilterConfig.FilterIndex = 0;
 sFilterConfig.FilterType = FDCAN_FILTER_MASK;
 sFilterConfig.FilterConfig = FDCAN_FILTER_TO_RXFIFO0;
 sFilterConfig.FilterID1 = 0x002; // 设置过滤器ID1
 sFilterConfig.FilterID2 = 0x7ff; // 设置过滤器ID2
 if (HAL_FDCAN_ConfigFilter(&hfdcan1, &sFilterConfig) != HAL_OK)
 {
 Error_Handler();
 }

 if(HAL_FDCAN_ConfigGlobalFilter(&hfdcan1, FDCAN_REJECT, FDCAN_REJECT, FDCAN_REJECT_REMOTE, FDCAN_REJECT_REMOTE) != HAL_OK)
 {
 Error_Handler();
 }

the MX_FDCAN1_Init(void) should modify to 

hfdcan1.Init.StdFiltersNbr = 1;

the original generated by cubeMX is hfdcan1.Init.StdFiltersNbr = 0;  change to 1, then it take affect.

this is the solution.

only 0x002 message can be received.