gd32A103 CAN

GD32A103是一款由STMicroelectronics生产的微控制器，它属于GD32A系列，专为低功耗应用设计，特别是针对CAN (Controller Area Network) 总线通信。GD32A103集成了硬件支持的CAN收发器，能高效地处理CAN标准（ISO 11898-2），常用于汽车电子、工业自动化、物联网(IoT)等领域，提供高速数据传输、错误检测以及强大的中断功能。

该微控制器的特点包括：
1. **CAN-FD支持**：可以工作在传统的CAN 2.0B模式下，也支持CAN Flexible Data Rate (CAN FD)，可实现更高的数据速率和更丰富的数据包内容。
2. **高性能**：内置16位定时器和ADC，适合实时性和精确测量任务。
3. **低功耗**：通过深度休眠模式降低功耗，适用于电池供电的应用。
4. **丰富外设接口**：GPIO、I2C、SPI、USART等，便于与其他设备连接。
5. **大容量闪存和RAM**：通常包含几十到几百KB的闪存和几KB至几十KB的RAM，满足不同项目需求。

相关问题

GD32f103 CAN程序

以下是 GD32F103 上的 CAN 程序示例，你可以参考下面的代码：

#include "gd32f10x.h"

void nvic_config(void);
void gpio_config(void);
void can_config(void);

int main(void)
{
    /* NVIC configuration */
    nvic_config();

    /* GPIO configuration */
    gpio_config();

    /* CAN configuration */
    can_config();

    while(1);
}

void nvic_config(void)
{
    nvic_priority_group_set(NVIC_PRIGROUP_PRE2_SUB2);
    nvic_irq_enable(CAN0_RX1_IRQn, 1, 0);
}

void gpio_config(void)
{
    /* Enable GPIO clock */
    rcu_periph_clock_enable(RCU_GPIOB);

    /* Configure CAN GPIO */
    gpio_init(GPIOB, GPIO_MODE_IPU, GPIO_OSPEED_50MHZ, GPIO_PIN_8);
    gpio_init(GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9);
}

void can_config(void)
{
    /* Enable CAN0 clock */
    rcu_periph_clock_enable(RCU_CAN0);

    /* CAN0 configuration */
    can_struct_para_init(CAN_INIT_STRUCT);
    CAN_INIT_STRUCT.can_time_triggered=DISABLE;
    CAN_INIT_STRUCT.can_auto_bus_off_recovery=ENABLE;
    CAN_INIT_STRUCT.can_transmit_fifo_en=DISABLE;
    CAN_INIT_STRUCT.can_receive_fifo_number=0;
    CAN_INIT_STRUCT.can_mode=CAN_MODE_NORMAL;
    CAN_INIT_STRUCT.can_sjw=CAN_SJW_1TQ;
    CAN_INIT_STRUCT.can_bs1=CAN_BS1_11TQ;
    CAN_INIT_STRUCT.can_bs2=CAN_BS2_4TQ;
    CAN_INIT_STRUCT.can_prescaler=6;
    can_init(CAN0, &CAN_INIT_STRUCT);

    /* CAN0 filter configuration */
    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_init(&CAN_FILTER_STRUCT);

    /* Enable CAN0 interrupt */
    can_interrupt_enable(CAN0, CAN_INTEN_TMEIE | CAN_INTEN_FMPIE0 | CAN_INTEN_FFIE0);
}

void CAN0_RX1_IRQHandler(void)
{
    /* Check CAN0 receive interrupt flag */
    if (can_interrupt_flag_get(CAN0, CAN_INT_FLAG_RF1N) != RESET)
    {
        /* Clear CAN0 receive interrupt flag */
        can_interrupt_flag_clear(CAN0, CAN_INT_FLAG_RF1N);

        /* Receive data */
        can_receive(CAN0, CAN_FIFO1, &rx_message);

        /* TODO: Process received data */
    }
}

上面的代码中，`nvic_config()` 函数用于配置 NVIC，`gpio_config()` 函数用于配置 GPIO，`can_config()` 函数用于配置 CAN。在 `main()` 函数中，我们首先调用这三个函数，然后进入一个无限循环。在 `CAN0_RX1_IRQHandler()` 中，我们处理 CAN 接收中断并处理接收到的数据。

需要注意的是，以上仅是一个示例程序，你需要根据你的具体需求进行修改和调整。

gd32f103rct can

GD32F103RCT6是一款基于ARM Cortex-M3内核的微控制器，它具有丰富的外设和功能。其中包括CAN通信功能。下面是使用HAL库在GD32F103RCT6上进行CAN通信的示例代码：

#include "gd32f10x.h"
#include "gd32f10x_can.h"

void CAN_Config(void)
{
    CAN_InitPara CAN_InitStructure;
    CAN_FilterInitPara CAN_FilterInitStructure;

    /* 使能CAN时钟 */
    RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_CAN0, ENABLE);

    /* 配置CAN引脚 */
    GPIO_InitPara GPIO_InitStructure;
    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOB, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_PIN_8;
    GPIO_InitStructure.GPIO_Mode = GPIO_MODE_IPU;
    GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    /* CAN单元初始化 */
    CAN_DeInit(CAN0);
    CAN_StructInit(&CAN_InitStructure);
    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_9TQ;
    CAN_InitStructure.CAN_BS2 = CAN_BS2_8TQ;
    CAN_InitStructure.CAN_Prescaler = 6;
    CAN_Init(CAN0, &CAN_InitStructure);

    /* CAN过滤器初始化 */
    CAN_FilterInitStructure.CAN_FilterNumber = 0;
    CAN_FilterInitStructure.CAN_FilterMode = CAN_FILTERMODE_MASK;
    CAN_FilterInitStructure.CAN_FilterScale = CAN_FILTERSCALE_32BIT;
    CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
    CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
    CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
    CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
    CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_FIFO0;
    CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
    CAN_FilterInit(&CAN_FilterInitStructure);

    /* 使能CAN接收中断 */
    CAN_INTConfig(CAN0, CAN_INT_RFNE0, ENABLE);
    NVIC_EnableIRQ(CAN0_RX0_IRQn);
}

void CAN0_RX0_IRQHandler(void)
{
    if (CAN_GetITStatus(CAN0, CAN_INT_RFNE0) != RESET)
    {
        CAN_Receive(CAN0, CAN_FIFO0, &RxMessage);
        // 处理接收到的数据
    }
}

int main(void)
{
    CAN_Config();

    while (1)
    {
        // 发送CAN数据
        CAN_Transmit(CAN0, &TxMessage);
    }
}

以上代码是一个简单的CAN通信示例，其中包括了CAN的初始化、过滤器配置、中断处理和数据发送。你可以根据自己的需求进行修改和扩展。