STM32F4配置CAN
时间: 2024-02-29 21:45:21 浏览: 25
STM32F4的CAN配置需要进行以下几个步骤:
1. 首先,需要在STM32CubeMX中选择CAN功能,并将其配置为所需的模式(例如,CAN1或CAN2)。
2. 然后,需要在CAN控制器的主寄存器中设置一些参数,例如工作模式、位速率等。
3. 接下来,需要配置CAN过滤器,以过滤出所需的CAN消息。可以通过手动添加过滤器代码或在STM32CubeMX中进行配置来实现。
4. 最后,需要启用CAN控制器,并根据需要编写相应的发送和接收代码。
相关问题
stm32f4的can通信
对于stm32f4的CAN通信,需要进行以下步骤:
1. 配置GPIO引脚为CAN模式
2. 配置CAN控制器
3. 配置CAN过滤器
4. 启动CAN控制器
以下是一个简单的示例代码:
```c
#include "stm32f4xx.h"
void CAN_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
// 使能GPIO时钟
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
// 配置GPIO引脚为CAN模式
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// 配置CAN时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);
// 配置CAN控制器
CAN_InitStructure.CAN_TTCM = DISABLE;
CAN_InitStructure.CAN_ABOM = DISABLE;
CAN_InitStructure.CAN_AWUM = DISABLE;
CAN_InitStructure.CAN_NART = DISABLE;
CAN_InitStructure.CAN_RFLM = DISABLE;
CAN_InitStructure.CAN_TXFP = DISABLE;
CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_8tq;
CAN_InitStructure.CAN_Prescaler = 4;
CAN_Init(CAN1, &CAN_InitStructure);
// 配置CAN过滤器
CAN_FilterInitStructure.CAN_FilterNumber = 0;
CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
CAN_FilterInit(&CAN_FilterInitStructure);
// 启动CAN控制器
CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_TME, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_EWG, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_EPV, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_BOF, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_LEC, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_ERR, ENABLE);
}
int main(void)
{
// 初始化CAN
CAN_Config();
while (1)
{
// 循环发送CAN数据
// ...
}
}
```
STM32F4同时配置两路CAN
STM32F4可以同时配置两路CAN。根据引用中提到的主控芯片STM32F406ZGT6和引用中提到的双CAN收发程序,可以得出结论。在STM32F4上,每条CAN总线需要分配一个CAN控制器,而STM32F406ZGT6具有两个CAN控制器,因此可以同时配置两路CAN。您可以使用适当的软件版本和库版本来配置和使用这两路CAN总线。另外,根据引用中提到的CAN波特率公式,可以根据需要配置和调整CAN总线的波特率。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [STM32CubeMX | STM32 F4系列HAL库使用双CAN配置及注意事项](https://blog.csdn.net/qq153471503/article/details/104167800)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* [STM32F4双CAN收发程序 已经调试通过](https://download.csdn.net/download/weixin_42058042/12623174)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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