stm32f103c8t6l298n驱动电机定义

STM32F103C8T6是一款ARM Cortex-M3内核的微控制器，L298N是一款双H桥驱动芯片，可用于驱动电机等设备。因此，可以使用STM32F103C8T6来驱动L298N芯片，进而控制电机。

以下是一种可能的驱动电机的定义方法：

1. 定义引脚：

#define ENA_PIN GPIO_Pin_0     // PWM输出引脚A
#define ENB_PIN GPIO_Pin_1     // PWM输出引脚B
#define IN1_PIN GPIO_Pin_2     // 输入引脚1
#define IN2_PIN GPIO_Pin_3     // 输入引脚2
#define IN3_PIN GPIO_Pin_4     // 输入引脚3
#define IN4_PIN GPIO_Pin_5     // 输入引脚4

2. 初始化引脚：

GPIO_InitTypeDef GPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin = ENA_PIN | ENB_PIN | IN1_PIN | IN2_PIN | IN3_PIN | IN4_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

3. 初始化定时器：

TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

TIM_TimeBaseStructure.TIM_Period = 999;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_Cmd(TIM3, ENABLE);

4. 控制电机：

// 控制电机A
void motorA(int speed, int direction) {
    if (speed > 0) {
        GPIO_SetBits(GPIOA, IN1_PIN);
        GPIO_ResetBits(GPIOA, IN2_PIN);
        TIM_SetCompare1(TIM3, speed);
    } else if (speed < 0) {
        GPIO_ResetBits(GPIOA, IN1_PIN);
        GPIO_SetBits(GPIOA, IN2_PIN);
        TIM_SetCompare1(TIM3, -speed);
    } else {
        TIM_SetCompare1(TIM3, 0);
    }

    if (direction > 0) {
        GPIO_SetBits(GPIOA, ENA_PIN);
    } else if (direction < 0) {
        GPIO_ResetBits(GPIOA, ENA_PIN);
    }
}

// 控制电机B
void motorB(int speed, int direction) {
    if (speed > 0) {
        GPIO_SetBits(GPIOA, IN3_PIN);
        GPIO_ResetBits(GPIOA, IN4_PIN);
        TIM_SetCompare2(TIM3, speed);
    } else if (speed < 0) {
        GPIO_ResetBits(GPIOA, IN3_PIN);
        GPIO_SetBits(GPIOA, IN4_PIN);
        TIM_SetCompare2(TIM3, -speed);
    } else {
        TIM_SetCompare2(TIM3, 0);
    }

    if (direction > 0) {
        GPIO_SetBits(GPIOA, ENB_PIN);
    } else if (direction < 0) {
        GPIO_ResetBits(GPIOA, ENB_PIN);
    }
}

以上代码是一种简单的驱动电机的方法，具体实现还需要根据实际情况进行调整。需要注意的是，L298N芯片可以驱动直流电机、步进电机等设备，具体驱动方法可能会有所不同。