..\src\app_gpio.c(835): error: #20: identifier "CHARGE_DETECT_INPUT_EXTI_LINE" is undefined if (EXTI_GetITStatus(CHARGE_DETECT_INPUT_EXTI_LINE) != RESET) ..\src\app_gpio.c(877): error: #20: identifier "CHARGE_DETECT_INPUT_PIN" is undefined GPIO_InitStructure.Pin = CHARGE_DETECT_INPUT_PIN; ..\src\app_gpio.c(880): error: #20: identifier "CHARGE_DETECT_INPUT_PORT" is undefined GPIO_InitPeripheral(CHARGE_DETECT_INPUT_PORT, &GPIO_InitStructure); ..\src\app_gpio.c(960): error: #20: identifier "PREDIS_PIN" is undefined GPIO_InitStructure.Pin = PREDIS_PIN | PRECHG_PIN; ..\src\app_gpio.c(960): error: #20: identifier "PRECHG_PIN" is undefined GPIO_InitStructure.Pin = PREDIS_PIN | PRECHG_PIN; ..\src\app_gpio.c(963): error: #20: identifier "PREDIS_PRECHG_PORT" is undefined GPIO_InitPeripheral(PREDIS_PRECHG_PORT, &GPIO_InitStructure);

GPIO_LED.rar_6410 GP_6410 GPIO _GPIO_GPIO_KEY.C S3C64_GPIO_led

标题中的“GPIO_LED.rar_6410 GP_6410 GPIO _GPIO_GPIO_KEY.C S3C64_GPIO_led”表明这是一个关于S3C6410处理器中GPIO（General Purpose Input/Output）功能的示例，主要涉及到LED灯的控制。这个压缩包可能包含了一个...

gpio.rar_ 2812 IO _2812 gpio_2812 io_GPIO.rar

标题中的“gpio.rar_ 2812 IO _2812 gpio_2812 io_GPIO.rar”表明这是一个关于2812型号芯片GPIO（通用输入/输出）的资源包，其中包含了与GPIO编程相关的工程文件。2812通常指的是TI公司的微控制器TMS320F2812，这是...

在保持原来的代码逻辑的条件下，根据STM32F407的特性，把下面STM32F1的代码移植到STM32F407。void ExtiGpioInit(void) { GPIO_InitTypeDef GPIO_InitStruct; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5 ; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStruct); } void ExtiNvicInit(void) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn ; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void ExtiModeInit(void) { EXTI_InitTypeDef EXTI_InitStructure; GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource4); EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_Line = EXTI_Line4; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource5); EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_Line = EXTI_Line5; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); }

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4|GPIO_...

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource14); EXTI_InitTypeDef EXTI_InitStructure; EXTI_InitStructure.EXTI_Line = EXTI_Line14; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_Init(&EXTI_InitStructure); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_Init(&NVIC_InitStructure);

这段代码是在STM32的固件库中使用的，主要是对GPIO的初始化和外部中断的配置。...这段代码主要是用来实现GPIO的输入中断功能，当GPIOB的Pin14发生下降沿时，会触发EXTI_Line14中断，并执行EXTI15_10_IRQn中断服务程序。

详细解释：void MPU6050_EXTI_Init(void) { EXTI_InitTypeDef EXTI_InitStruct; GPIO_InitTypeDef GPIO_InitStruct; NVIC_InitTypeDef NVIC_InitStruct; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO,ENABLE); GPIO_InitStruct.GPIO_Pin=GPIO_Pin_5; GPIO_InitStruct.GPIO_Mode=GPIO_Mode_IPU; GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_InitStruct); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource5); EXTI_InitStruct.EXTI_Line=EXTI_Line5; EXTI_InitStruct.EXTI_LineCmd=ENABLE; EXTI_InitStruct.EXTI_Mode=EXTI_Mode_Interrupt; EXTI_InitStruct.EXTI_Trigger=EXTI_Trigger_Falling; EXTI_Init(&EXTI_InitStruct); NVIC_InitStruct.NVIC_IRQChannel=EXTI9_5_IRQn; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=0; NVIC_InitStruct.NVIC_IRQChannelSubPriority=0; NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE; NVIC_Init(&NVIC_InitStruct); }

3. 配置EXTI_InitStruct结构体，设置外部中断线5的中断触发方式为下降沿触发，使能外部中断线5，并将其注入到EXTI_InitStruct结构体中。 4. 配置NVIC_InitStruct结构体，使能中断优先级，并将EXTI9_5_IRQn中断通道...

GPIO_InitTypeDef GPIO_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOB,&GPIO_InitStructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource9); EXTI_ClearITPendingBit(EXTI_Line9); EXTI_InitStructure.EXTI_Line = EXTI_Line9; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure);

这段代码是在STM32中初始化外部中断EXTI9，其中GPIOB的Pin9被配置为输入模式，并使用上拉电阻，同时将其与外部中断线EXTI_Line9连接。然后，设置外部中断的触发模式为中断模式，并使能中断线，最后配置中断优先级和...

..\..\..\..\..\middlewares\Third_Party\bms-firmware\app\src\bms.h(530): error: #79: expected a type specifier bool CHARGER_IS_PLUG_IN(); ..\..\..\..\..\middlewares\Third_Party\bms-firmware\app\src\bms.h(530): error: #79: expected a type specifier bool CHARGER_IS_PLUG_IN(); ..\..\..\..\..\middlewares\Third_Party\bms-firmware\app\src\bms.h(530): error: #18: expected a ")" bool CHARGER_IS_PLUG_IN(); ..\..\..\..\..\middlewares\Third_Party\bms-firmware\app\src\bms.h(530): error: #147-D: declaration is incompatible with "uint8_t GPIO_ReadInputDataBit(GPIO_Module *, uint16_t)" (declared at line 435 of "..\..\..\..\..\firmware\n32wb03x_std_periph_driver\inc\n32wb03x_gpio.h") bool CHARGER_IS_PLUG_IN();

bool 是 C++ 的基本数据类型，但是在 C 语言中并没有定义该类型。你需要在代码中添加一个 bool 类型的定义，或者将 bool 替换为其他合适的类型，如 int 或 char。另外，该函数的声明与另一个头文件中定义的同名...

我需要细节代码并且下面这段代码有无问题 { EXTI_InitTypeDef EXTI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; /* Enable GPIOA clock / RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE); / Enable SYSCFG clock / RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); / Configure PI6 pin as input floating / GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_Init(GPIOD, &GPIO_InitStructure); / Connect EXTI Line6 to PI6 pin / SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOD, EXTI_PinSource6); / Configure EXTI Line6 / EXTI_InitStructure.EXTI_Line = EXTI_Line6; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); / Enable and set EXTI Line6 Interrupt to the lowest priority */ NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } }

该代码是用于配置STM32的外部中断（EXTI）和相关的GPIO引脚。以下是对代码的详细说明： 1. 首先，使能GPIOD和SYSCFG的时钟。 2. 然后，配置GPIOD引脚6为输入悬空模式（GPIO_Mode_IN，GPIO_PuPd_NOPULL）。 3. 通过...

在.c文件中，程序如下： #include "stm32f10x.h" // Device header uint16_t CountSensor_n=0; void CountSensor_init (void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); GPIO_InitTypeDef GPIO_Initstructure; GPIO_Initstructure.GPIO_Mode=GPIO_Mode_IPU; GPIO_Initstructure.GPIO_Pin=GPIO_Pin_14; GPIO_Initstructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_Initstructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource13); EXTI_InitTypeDef EXTI_Initstructure; EXTI_Initstructure.EXTI_Line=EXTI_Line14; EXTI_Initstructure.EXTI_LineCmd=ENABLE; EXTI_Initstructure.EXTI_Mode=EXTI_Mode_Interrupt; EXTI_Initstructure.EXTI_Trigger=EXTI_Trigger_Rising; EXTI_Init(&EXTI_Initstructure); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); NVIC_InitTypeDef NVIC_Initstructure; NVIC_Initstructure.NVIC_IRQChannel= EXTI15_10_IRQn; NVIC_Initstructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Initstructure.NVIC_IRQChannelPreemptionPriority=1; NVIC_Initstructure.NVIC_IRQChannelSubPriority=1; NVIC_Init(&NVIC_Initstructure); } uint16_t CountSensor_get () { return CountSensor_n; } void EXTI15_10_IRQHandler (void) { if (EXTI_GetITStatus(EXTI_Line14)==SET) { CountSensor_n++; } EXTI_ClearITPendingBit(EXTI_Line14); } 在.h文件中，程序如下： #ifndef __COUNTSENSOR_H #define __COUNTSENSOR_H void CountSensor_init (void); uint16_t CountSensor_get (void); #endif 为何在main.c中引用CountSensor_init();和CountSensor_get()总是出错

在main.c文件中引用CountSensor_init();和CountSensor_get()出错的原因可能有以下几点： 1. 头文件引入错误：请确保在main.c文件中正确引入了CountSensor.h头文件，并且头文件路径正确。 2. 函数声明错误：请确保...

int16_t Encoder_Num; void Encoder_Init (void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); GPIO_InitTypeDef GPIO_Initstructure; GPIO_Initstructure.GPIO_Mode=GPIO_Mode_IPU; GPIO_Initstructure.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_1; GPIO_Initstructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_Initstructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource0|GPIO_PinSource1); EXTI_InitTypeDef EXTI_Initstructure; EXTI_Initstructure.EXTI_Line=EXTI_Line0|EXTI_Line1; EXTI_Initstructure.EXTI_LineCmd=ENABLE; EXTI_Initstructure.EXTI_Mode=EXTI_Mode_Interrupt; EXTI_Initstructure.EXTI_Trigger=EXTI_Trigger_Falling; EXTI_Init(&EXTI_Initstructure); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); NVIC_InitTypeDef NVIC_Initstructure; NVIC_Initstructure.NVIC_IRQChannel=EXTI0_IRQn; NVIC_Initstructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Initstructure.NVIC_IRQChannelPreemptionPriority=1; NVIC_Initstructure.NVIC_IRQChannelSubPriority=1; NVIC_Init(&NVIC_Initstructure); NVIC_Initstructure.NVIC_IRQChannel=EXTI1_IRQn; NVIC_Initstructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Initstructure.NVIC_IRQChannelPreemptionPriority=2; NVIC_Initstructure.NVIC_IRQChannelSubPriority=2; NVIC_Init(&NVIC_Initstructure); } int Encoder_get() { int16_t temp; temp=Encoder_Num; Encoder_Num=0; return temp; }void EXTI0_IRQHandler () { if (EXTI_GetITStatus(EXTI_Line0)==SET) { if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_0)==0) { if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1)==1) { Encoder_Num--; } else { Encoder_Num++; } } EXTI_ClearITPendingBit(EXTI_Line0); } }

2. 中断优先级设置不正确：根据代码，中断优先级已经设置为EXTI0_IRQn的优先级为1，EXTI1_IRQn的优先级为2。但是，您需要确保这些优先级高于其他可能存在的中断。 3. 中断触发方式设置不正确：根据代码，中断触发...

EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; KEY_Init(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource2); EXTI_InitStructure.EXTI_Line=EXTI_Line2; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); 解释每一句代码

6. EXTI_InitStructure.EXTI_Line=EXTI_Line2;：设置外部中断线号为2。 7. EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;：设置外部中断模式为中断模式。 8. EXTI_InitStructure.EXTI_Trigger = EXTI_...

为下面每一行代码添加注释：#include "stm32f10x.h" void RCC_Configuration(void) { /* Enable GPIOA, GPIOC and AFIO clocks / RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE); / Enable SYSCFG clock / RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); } void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; / Configure PA0 pin as input floating / GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); / Configure PC13 pin as output push-pull / GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); } void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure / Configure the NVIC Preemption Priority Bits / NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); / Enable the EXTI0 Interrupt / NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void EXTI_Configuration(void) { EXTI_InitTypeDef EXTI_InitStructure; / Configure EXTI Line0 to generate an interrupt on falling edge / EXTI_InitStructure.EXTI_Line = EXTI_Line0; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); / Connect EXTI Line0 to PA0 pin / GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0); } void SysTick_Configuration(void) { / Configure SysTick to generate an interrupt every 1ms / if (SysTick_Config(SystemCoreClock / 1000)) { / Capture error / while (1); } } void Delay(__IO uint32_t nTime) { / Wait for nTime millisecond / TimingDelay = nTime; while (TimingDelay != 0); } void TimingDelay_Decrement(void) { if (TimingDelay != 0x00) { TimingDelay--; } } int main(void) { RCC_Configuration(); GPIO_Configuration(); NVIC_Configuration(); EXTI_Configuration(); SysTick_Configuration(); / Infinite loop / while (1) { / Toggle PC13 LED every 500ms / GPIOC->ODR ^= GPIO_Pin_13; Delay(500); } } void EXTI0_IRQHandler(void) { / Check if PA0 button is pressed / if (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0) == RESET) { / Reset MCU / NVIC_SystemReset(); } / Clear EXTI Line0 pending bit */ EXTI_ClearITPendingBit(EXTI_Line0); }

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE); // 使能SYSCFG时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); } // 配置GPIO void GPIO_...

解释下述代码#include "stm32f10x.h" u8 ReadValue1=0; void Gpio_Init_Port(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); } void NVIC_Config(void) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void EXTI_Configuration(void) { EXTI_InitTypeDef EXTI_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0); EXTI_InitStructure.EXTI_Line = EXTI_Line0; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; EXTI_Init(&EXTI_InitStructure); } void EXIT0_IRQHander(void) { ReadValue1=GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0); if(ReadValue1==1) { GPIO_WriteBit(GPIOA, GPIO_Pin_8, (BitAction)((1-GPIO_ReadOutputDataBit(GPIOA, GPIO_Pin_8)))); GPIO_WriteBit(GPIOD, GPIO_Pin_2, (BitAction)((1-GPIO_ReadOutputDataBit(GPIOD, GPIO_Pin_2)))); } EXTI_ClearFlag(EXTI_Line0); } int main() { Gpio_Init_Port(); EXTI_Configuration(); NVIC_Config(); GPIO_WriteBit(GPIOA, GPIO_Pin_8,Bit_RESET); GPIO_WriteBit(GPIOD, GPIO_Pin_2,Bit_RESET); while(1); }

1. Gpio_Init_Port()函数：初始化GPIO引脚，其中包括了GPIOA的第8个引脚和GPIOA的第0个引脚以及GPIOD的第2个引脚。GPIOA的第8个引脚被配置为输出模式，而GPIOA的第0个引脚和GPIOD的第2个引脚被配置为输入模式。 2. ...

void KEY_GPIO_CONFIG(void) { EXTI_InitTypeDef EXTI_InitStruct; NVIC_InitTypeDef NVIC_InitStruct; GPIO_InitTypeDef GPIO_InitStruct; RCC_APB2PeriphClockCmd(GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2,ENABLE); GPIO_InitStruct.GPIO_Mode=GPIO_Mode_IPD;// GPIO_Init(GPIOA,&GPIO_InitStruct); GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0); GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource1); GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource2); // 配置外部中断 EXTI_InitStruct.EXTI_Line = EXTI_Line0 | EXTI_Line1 | EXTI_Line2; EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising; EXTI_InitStruct.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStruct); // 配置中断向量表 NVIC_InitStruct.NVIC_IRQChannel = EXTI0_IRQn; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1; NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStruct); NVIC_InitStruct.NVIC_IRQChannel = EXTI1_IRQn; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1; NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStruct); NVIC_InitStruct.NVIC_IRQChannel = EXTI2_IRQn; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1; NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStruct); } 为什么这样配置出来的代码，下载到单片机led灯电平会飘移

1. GPIO模式配置不正确：在KEY_GPIO_CONFIG函数中，您将GPIO的模式配置为GPIO_Mode_IPD，这意味着输入下拉模式。如果您希望通过按下按键来改变LED灯的状态，那么您应该将GPIO的模式配置为输出模式，例如GPIO_...

void Encoder_Init(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure; TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInitStructure.TIM_Period = 1000 - 1; TIM_TimeBaseInitStructure.TIM_Prescaler = 720 - 1; TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM1, &TIM_TimeBaseInitStructure); TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE); TIM_Cmd(TIM1, ENABLE); GPIO_InitTypeDef GPIO_InitStructure1; GPIO_InitStructure1.GPIO_Mode=GPIO_Mode_IPU; GPIO_InitStructure1.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_1; GPIO_InitStructure1.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure1); GPIO_InitTypeDef GPIO_InitStructure2; GPIO_InitStructure2.GPIO_Mode=GPIO_Mode_IPU; GPIO_InitStructure2.GPIO_Pin=GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13; GPIO_InitStructure2.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure2); GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0); GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource1); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource4); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource5); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource10); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource11); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource12); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource13); EXTI_InitTypeDef EXTI_InitStructure; EXTI_InitStructure.EXTI_Line = EXTI_Line0|EXTI_Line1|EXTI_Line4|EXTI_Line5|EXTI_Line10|EXTI_Line11|EXTI_Line12|EXTI_Line13; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling; EXTI_Init(&EXTI_InitStructure); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); NVIC_InitTypeDef NVIC_InitStruct1; NVIC_InitStruct1.NVIC_IRQChannel = EXTI0_IRQn; NVIC_InitStruct1.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStruct1.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStruct1.NVIC_IRQChannelSubPriority = 0x00; NVIC_Init(&NVIC_InitStruct1); NVIC_InitTypeDef NVIC_InitStruct2; NVIC_InitStruct2.NVIC_IRQChannel = EXTI1_IRQn; NVIC_InitStruct2.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStruct2.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStruct2.NVIC_IRQChannelSubPriority = 0x00; NVIC_Init(&NVIC_InitStruct2); NVIC_InitTypeDef NVIC_InitStruct3; NVIC_InitStruct3.NVIC_IRQChannel = EXTI4_IRQn; NVIC_InitStruct3.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStruct3.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStruct3.NVIC_IRQChannelSubPriority = 0x00; NVIC_Init(&NVIC_InitStruct3); NVIC_InitTypeDef NVIC_InitStruct4; NVIC_InitStruct4.NVIC_IRQChannel = EXTI9_5_IRQn; NVIC_InitStruct4.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStruct4.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStruct4.NVIC_IRQChannelSubPriority = 0x00; NVIC_Init(&NVIC_InitStruct4); NVIC_InitTypeDef NVIC_InitStruct5; NVIC_InitStruct5.NVIC_IRQChannel = EXTI15_10_IRQn; NVIC_InitStruct5.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStruct5.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStruct5.NVIC_IRQChannelSubPriority = 0x00; NVIC_Init(&NVIC_InitStruct5); }stm32f103系列芯片，当这段代码初始化时，以PA2PA3初始化的串口不能正常工作，是为什么

这段代码中没有涉及到PA2和PA3，因此不太可能直接影响串口的正常工作。可能原因如下： 1. 可能是其他地方对PA2和PA3进行了配置，导致串口无法正常工作； 2. 可能是串口初始化代码存在问题，需要检查一下是否正确地...

void EXTIX_Init(void) { NVIC_InitTypeDef NVIC_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOE, EXTI_PinSource0); EXTI_InitStructure.EXTI_Line = EXTI_Line0; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //上升沿触发 EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init( &EXTI_InitStructure ); //中断 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02； NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Init(&NVIC_InitStructure); } （3）编写 LED 与 KEY 相关代码。（4）编写中断服务函数。

这段代码是在初始化外部中断 EXTI0，使得当 GPIOE 的 0 号引脚有上升沿时触发中断。以下是 LED 和 KEY 相关代码： LED 相关代码： c //开启 GPIOB 时钟 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); ...

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