stm32蓝牙小车代码

以下是一个简单的STM32蓝牙小车代码示例。代码使用了HC-05蓝牙模块和L298N驱动模块，可以通过蓝牙控制小车的前进、后退、左转和右转。

#include "stm32f10x.h"

#define Bluetooth_RX_Pin GPIO_Pin_10
#define Bluetooth_TX_Pin GPIO_Pin_9
#define Bluetooth_GPIO GPIOA

#define Motor1_EN_Pin GPIO_Pin_0
#define Motor2_EN_Pin GPIO_Pin_1
#define Motor1_Pin1 GPIO_Pin_2
#define Motor1_Pin2 GPIO_Pin_3
#define Motor2_Pin1 GPIO_Pin_4
#define Motor2_Pin2 GPIO_Pin_5
#define Motor_GPIO GPIOB

USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;

void USART1_Init(void);
void GPIO_Configuration(void);
void Motor_Forward(void);
void Motor_Backward(void);
void Motor_Turn_Left(void);
void Motor_Turn_Right(void);
void Motor_Stop(void);

int main(void)
{
  USART1_Init();
  GPIO_Configuration();
  Motor_Stop();
  
  while(1)
  {
    if(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == SET)
    {
      char data = USART_ReceiveData(USART1);
      
      switch(data)
      {
        case 'F':
          Motor_Forward();
          break;
        case 'B':
          Motor_Backward();
          break;
        case 'L':
          Motor_Turn_Left();
          break;
        case 'R':
          Motor_Turn_Right();
          break;
        case 'S':
          Motor_Stop();
          break;
        default:
          break;
      }
    }
  }
}

void USART1_Init(void)
{
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
  
  USART_InitStructure.USART_BaudRate = 9600;
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

  USART_Init(USART1, &USART_InitStructure);
  
  USART_Cmd(USART1, ENABLE);
}

void GPIO_Configuration(void)
{
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);
  
  GPIO_InitStructure.GPIO_Pin = Bluetooth_RX_Pin;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(Bluetooth_GPIO, &GPIO_InitStructure);
  
  GPIO_InitStructure.GPIO_Pin = Bluetooth_TX_Pin;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(Bluetooth_GPIO, &GPIO_InitStructure);
  
  GPIO_InitStructure.GPIO_Pin = Motor1_EN_Pin | Motor2_EN_Pin | Motor1_Pin1 | Motor1_Pin2 | Motor2_Pin1 | Motor2_Pin2;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(Motor_GPIO, &GPIO_InitStructure);
}

void Motor_Forward(void)
{
  GPIO_SetBits(Motor_GPIO, Motor1_Pin1 | Motor2_Pin1);
  GPIO_ResetBits(Motor_GPIO, Motor1_Pin2 | Motor2_Pin2);
  GPIO_SetBits(Motor_GPIO, Motor1_EN_Pin | Motor2_EN_Pin);
}

void Motor_Backward(void)
{
  GPIO_SetBits(Motor_GPIO, Motor1_Pin2 | Motor2_Pin2);
  GPIO_ResetBits(Motor_GPIO, Motor1_Pin1 | Motor2_Pin1);
  GPIO_SetBits(Motor_GPIO, Motor1_EN_Pin | Motor2_EN_Pin);
}

void Motor_Turn_Left(void)
{
  GPIO_SetBits(Motor_GPIO, Motor1_Pin2 | Motor2_Pin1);
  GPIO_ResetBits(Motor_GPIO, Motor1_Pin1 | Motor2_Pin2);
  GPIO_SetBits(Motor_GPIO, Motor1_EN_Pin | Motor2_EN_Pin);
}

void Motor_Turn_Right(void)
{
  GPIO_SetBits(Motor_GPIO, Motor1_Pin1 | Motor2_Pin2);
  GPIO_ResetBits(Motor_GPIO, Motor1_Pin2 | Motor2_Pin1);
  GPIO_SetBits(Motor_GPIO, Motor1_EN_Pin | Motor2_EN_Pin);
}

void Motor_Stop(void)
{
  GPIO_ResetBits(Motor_GPIO, Motor1_Pin1 | Motor1_Pin2 | Motor2_Pin1 | Motor2_Pin2);
  GPIO_ResetBits(Motor_GPIO, Motor1_EN_Pin | Motor2_EN_Pin);
}

注意：这只是一个示例代码，需要根据具体的硬件电路和需求进行修改。