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rt_size_t can_sendmsg(uint8_t *data) rt_memcpy(msg.data, data, sizeof(msg)); rt_device_write的返回值为0,有哪位大神可以解答一下 |
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3个回答
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产品从FreeRTOS移植到RTT上,遇到问题了,感觉RTT的can驱动问题很多啊dizzy
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已经找到问题了,drv_can.c中默认的can波特率配置中BS1 BS2设置的不对,修改后就可以了
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static const struct stm32_baud_rate_tab can_baud_rate_tab[] =
{ // {CAN1MBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 3)}, // {CAN800kBaud, (CAN_SJW_2TQ | CAN_BS1_8TQ | CAN_BS2_5TQ | 4)}, // // {CAN500kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 6)}, // {CAN250kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 12)}, // {CAN125kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 24)}, // {CAN100kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 30)}, // {CAN50kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 60)}, // {CAN20kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 150)}, //// {CAN10kBaud, (CAN_SJW_2TQ | CAN_BS1_9TQ | CAN_BS2_5TQ | 300)} {CAN1MBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 3)}, {CAN800kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 4)}, {CAN500kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 6)}, {CAN250kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 12)}, {CAN125kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 24)}, {CAN100kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 30)}, {CAN50kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 60)}, {CAN20kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 150)}, {CAN10kBaud, (CAN_SJW_2TQ | CAN_BS1_6TQ | CAN_BS2_7TQ | 300)} |
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