STM32 通过433M无线接收模块电路控制舵机

STM32 通过433M无线接收模块电路控制舵机的实现可以分为以下几个步骤： 1. **硬件连接**： - **433M无线接收模块**：将433M无线接收模块的VCC、GND和DATA引脚分别连接到STM32的电源、GND和一个GPIO引脚。 - **舵机**：将舵机的VCC、GND和信号引脚分别连接到STM32的电源、GND和一个带有PWM功能的GPIO引脚。 2. **软件编程**： - **初始化GPIO**：配置用于接收无线信号的GPIO引脚为输入模式，配置用于控制舵机的GPIO引脚为PWM输出模式。 - **初始化PWM**：配置PWM输出以控制舵机的角度。 - **接收无线信号**：通过中断或轮询方式读取433M无线接收模块的数据。 - **解析数据**：根据接收到的数据调整舵机的角度。 以下是一个简单的示例代码： ```c #include "stm32f10x.h" #include "stm32f10x_gpio.h" #include "stm32f10x_rcc.h" #include "stm32f10x_tim.h" #define RECEIVER_PIN GPIO_Pin_0 #define RECEIVER_GPIO GPIOA #define SERVO_PIN GPIO_Pin_1 #define SERVO_GPIO GPIOA void GPIO_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; // Initialize receiver pin GPIO_InitStructure.GPIO_Pin = RECEIVER_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(RECEIVER_GPIO, &GPIO_InitStructure); // Initialize servo pin GPIO_InitStructure.GPIO_Pin = SERVO_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(SERVO_GPIO, &GPIO_InitStructure); } void PWM_Config(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; // Enable TIM2 clock RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); // Time base configuration TIM_TimeBaseStructure.TIM_Period = 1999; TIM_TimeBaseStructure.TIM_Prescaler = 719; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); // PWM1 Mode configuration TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 150; // Initial position TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM2, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable); // Enable TIM2 TIM_Cmd(TIM2, ENABLE); } int main(void) { GPIO_Config(); PWM_Config(); while (1) { // Read receiver pin if (GPIO_ReadInputDataBit(RECEIVER_GPIO, RECEIVER_PIN)) { // Set servo to a specific angle TIM_SetCompare1(TIM2, 150); // Example value } else { // Set servo to another angle TIM_SetCompare1(TIM2, 100); // Example value } } } ```