55 lines
1.1 KiB
Markdown
55 lines
1.1 KiB
Markdown
<!--
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* @Descripttion:
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* @version:
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* @Author: Chenfu
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* @Date: 2022-12-02 21:32:47
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* @LastEditTime: 2022-12-05 15:27:57
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-->
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# super_can
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## 代码结构
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.h中放置的是数据定义和外部接口，以及协议的定义和宏，.c中包含一些私有函数。
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## 外部接口
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```c
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SuperCapInstance *SuperCapInit(SuperCap_Init_Config_s* supercap_config);
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void SuperCapSend(SuperCapInstance *instance, uint8_t *data);
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```
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## 私有函数和变量
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```c
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static SuperCapInstance *super_cap_instance = NULL;
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static uint8_t *rxbuff;
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static void SuperCapRxCallback(can_instance *_instance)
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```
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`SuperCapRxCallback()`是super cap初始化can实例时的回调函数，用于can接收中断，进行协议解析。
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## 使用范例
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初始化时设置如下：
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```c
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SuperCap_Init_Config_s capconfig = {
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.can_config = {
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.can_handle = &hcan1,
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.rx_id = 0x301,
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.tx_id = 0x302
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},
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.recv_data_len = 4*sizeof(uint16_t),
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.send_data_len = sizeof(uint8_t)
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};
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SuperCapInstance *ins =SuperCapInit(&capconfig);
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```
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发送通过`SuperCapSend()`，建议使用强制类型转换：
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```c
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uint16_t tx = 0x321;
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SuperCapSend(ins, (uint8_t*)&tx);
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```
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