gd32 CAN通信初始化
时间: 2023-08-24 08:07:11 浏览: 154
以下是gd32 CAN通信的初始化代码示例:
```c
#include "gd32f4xx.h"
void CAN_Configuration(void)
{
/* 使能CAN时钟 */
rcu_periph_clock_enable(RCU_CAN0);
/* 配置CAN接口工作模式 */
can_deinit(CAN0);
can_struct_para_init(CAN_INIT_STRUCT);
CAN_INIT_STRUCT.can_mode = CAN_MODE_NORMAL;
CAN_INIT_STRUCT.can_sjw = CAN_SJW_1TQ;
CAN_INIT_STRUCT.can_bs1 = CAN_BS1_3TQ;
CAN_INIT_STRUCT.can_bs2 = CAN_BS2_2TQ;
CAN_INIT_STRUCT.can_prescaler = 6;
can_init(CAN0, &CAN_INIT_STRUCT);
/* 配置CAN接口过滤器 */
can_filter_struct_para_init(CAN_FILTER_STRUCT);
CAN_FILTER_STRUCT.can_filter_number = 0;
CAN_FILTER_STRUCT.can_filter_mode = CAN_FILTERMODE_IDMASK;
CAN_FILTER_STRUCT.can_filter_scale = CAN_FILTERSCALE_32BIT;
CAN_FILTER_STRUCT.can_filter_id_high = 0x0000;
CAN_FILTER_STRUCT.can_filter_id_low = 0x0000;
CAN_FILTER_STRUCT.can_filter_mask_id_high = 0x0000;
CAN_FILTER_STRUCT.can_filter_mask_id_low = 0x0000;
CAN_FILTER_STRUCT.can_filter_fifo_number = CAN_FIFO0;
CAN_FILTER_STRUCT.can_filter_enable = ENABLE;
can_filter_init(CAN0, &CAN_FILTER_STRUCT);
/* 启动CAN接口 */
can_fd_mode_enable(CAN0);
can_enable(CAN0);
}
```
在这个示例中,我们使用了gd32f4xx库提供的can_init()函数来配置CAN接口的工作模式、定时参数等。然后,我们使用can_filter_init()函数来配置CAN接口的过滤器,只有符合过滤条件的CAN帧才会被接收。最后,我们启动了CAN接口。
请注意,这只是一个简单的示例代码,实际应用中可能需要根据具体的需求进行更多的配置。
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