📄 init_config.c
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#include"init_config.h"
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures System Clocks
*******************************************************************************/
void RCC_Configuration(void)
{
/*枚举变量，定义高速时钟的启动状态*/
ErrorStatus HSEStartUpStatus;
/*将RCC寄存器重设为默认值*/
RCC_DeInit();
/*使能外部高速晶振HSE*/
RCC_HSEConfig(RCC_HSE_ON);
/*等待外部晶振稳定，超时则退出*/
HSEStartUpStatus=RCC_WaitForHSEStartUp();
/*判断HSE是否就绪*/
/*SUCCESS:HSE稳定且就绪，ERROR:HSE未就绪*/
if(HSEStartUpStatus==SUCCESS) //若外部时钟就绪
{
/*设置高速总线时钟(AHB)=系统时钟，HCLK=SYSCLK*/
RCC_HCLKConfig(RCC_SYSCLK_Div1);//将系统时钟进行1分频后，作为AHB总线时钟
/*设置低速外部总线1的时钟=高速总线时钟的2分频，PCLK1=HCLK/2*/
RCC_PCLK1Config(RCC_HCLK_Div2);
/*设置低速外部总线2的时钟=高速总线时钟的1分频，PCLK2=HCLK*/
RCC_PCLK2Config(RCC_HCLK_Div1);
/*设置FLASH储存器延时时钟周期数，2是针对高频时钟的
FLASH_Latency_0:0延时周期，FLASH_Latency_1:1延时周期
FLASH_Latency_2:2延时周期*/
FLASH_SetLatency(FLASH_Latency_2);
/*使能FLASH预取指令缓冲区，这两句跟RCC没有直接关系*/
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/*利用锁相环将HSE外部8MHz晶振9倍频到72MHz*/
RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9);
/*使能PLL*/
RCC_PLLCmd(ENABLE);
/*等待PLL输出稳定*/
/*RCC_FLAG_HSIRDY: HSI晶振就绪，RCC_FLAG_HSERDY: HSE晶振就绪
RCC_FLAG_PLLRDY: PLL就绪， RCC_FLAG_LSERDY: LSE晶振就绪
RCC_FLAG_LSIRDY: LSE晶振就绪，RCC_FLAG_PINRST: 引脚复位
RCC_FLAG_PORRST: POR/PDR复位，RCC_FLAG_SFTRST: 软件复位
RCC_FLAG_IWDGRST: IWDG复位， RCC_FLAG_WWDGRST: WWDG复位
RCC_FLAG_LPWRRST: 低功耗复位 */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY)==RESET){}
/*设置系统时钟来自PLL输出*/
/*RCC_SYSCLKSource_HSI: 选择HSI作为系统时钟
RCC_SYSCLKSource_HSE: 选择HSE作为系统时钟
RCC_SYSCLKSource_PLLCLK: 选择PLL作为系统时钟*/
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/*等待PLL时钟作为系统时钟*/
/*系统时钟标志位：0x00：HSI作为系统时钟
0x04：HSE作为系统时钟
0x08：PLL作为系统时钟*/
while(RCC_GetSYSCLKSource()!=0x08){}
}
/*使能GPIOA-GPIOE和AFIO的时钟*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE|RCC_APB2Periph_AFIO,ENABLE);
/*使能串口USART1的时钟*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
/*使能定时器TIM1时钟*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
/*使能定时器TIM2的时钟*/
RCC_APB2PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
/*使能ADC1的时钟*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures GPIO Modes
*******************************************************************************/
void GPIO_Configuration()
{
/*定义GPIO初始化结构体*/
GPIO_InitTypeDef GPIO_InitStructure;
/*配置USART1的引脚*/
/*配置USART1 TX，使PA.09为复用推挽输出*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
/*配置USART1 RX，使PA.10为浮空输入*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);
/*配置LED端口*/
/*配置PB.08 PB.09为LED的推挽输出控制*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOB,&GPIO_InitStructure);
/*配置PC.12 PC.13为LED的推挽输出控制*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_12|GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
/*配置按键PC.08-PC.11为浮空输入*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
/*配置电机端口*/
/*配置电机控制端口PD.07 PD.08 PD.09 PD.10为推挽输出*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOD,&GPIO_InitStructure);
/*配置红外接口，或USART2接口*/
/*配置PA.02为复用推挽输出*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
/*配置PA.03为浮空输入*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);
/*配置AD端口PB.0*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN;
GPIO_Init(GPIOB,&GPIO_InitStructure);
/* Configure infrared IO*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
/*配置中断输入PE.04 PE.05*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_4|GPIO_Pin_5;;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOE,&GPIO_InitStructure);
/*配置LCD1206端口*/
/*配置数据接口PC0-PC7为推挽输出*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3
|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
/*配置PD.04-PD.06为1206推挽输出控制端*/
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOD,&GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures NVIC Modes for T1
*******************************************************************************/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure,NVIC_InitStruct;
EXTI_InitTypeDef EXTI_InitStructure;
#ifdef VECT_TAB_RAM
// Set the Vector Table base location at 0x20000000
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else // VECT_TAB_FLASH
// Set the Vector Table base location at 0x08000000
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
// Configure the NVIC Preemption Priority Bits[配置优先级组]
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
// Enable the TIM1 gloabal Interrupt [允许TIM1全局中断]
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// Enable the TIM2 gloabal Interrupt [允许TIM2全局中断]
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// Enable the RTC Interrupt
NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// Configure INT IO PC9 enable exti9_5
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource9);
EXTI_InitStructure.EXTI_Line=EXTI_Line9;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
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);
// Configure INT IO PE4 enable exti4
GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource4);
EXTI_InitStructure.EXTI_Line=EXTI_Line4;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStruct.NVIC_IRQChannel = EXTI4_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority =0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelCmd =ENABLE;
NVIC_Init(&NVIC_InitStruct);
// Configure INT IO PE5 enable exti9_5
GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource5);
EXTI_InitStructure.EXTI_Line=EXTI_Line5;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
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);
}
/*******************************************************************************
* Function Name : USART_Configuration
* Description : Configures the USART1.
*******************************************************************************/
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
/* 配置USART1-------------------------------------------------------------------*/
/* USART1 configured as follow:
- BaudRate = 115200 baud 波特率为115200
- Word Length = 8 Bits 数据宽度8位
- One Stop Bit 一位停止位
- No parity 无校验位
- Hardware flow control disabled (RTS and CTS signals)无硬件流控制
- Receive and transmit enabled 使能接收发送传输
- USART Clock disabled 禁止串口时钟
- USART CPOL: Clock is active low 时钟低电平，指定了下个SCLK引脚上时钟输出的极性
- USART CPHA: Data is captured on the middle 时钟第二个边沿进行数据捕获，指定SCLK引脚时钟输出的相位
- USART LastBit: The clock pulse of the last data bit is not output to
the SCLK pin 最后一位数据的时钟不从SCLK输出
*/
USART_InitStructure.USART_BaudRate=115200; //波特率115200
USART_InitStructure.USART_WordLength=USART_WordLength_8b; //8位传输
USART_InitStructure.USART_StopBits=USART_StopBits_1; //1个停止位
USART_InitStructure.USART_Parity=USART_Parity_No; //无校验位
USART_InitStructure.USART_Mode=USART_Mode_Rx|USART_Mode_Tx; //Rx，Tx模式
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;//禁止硬件流控制，禁止RTS,CTS信号
USART_Init(USART1,&USART_InitStructure);
/*USART1时钟配置*/
USART_ClockInitStructure.USART_Clock=USART_Clock_Disable; //禁止串口时钟
USART_ClockInitStructure.USART_CPOL=USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA=USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit=USART_LastBit_Disable;
USART_ClockInit(USART1,&USART_ClockInitStructure);
// USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);//使能USART中断
//USART_ITConfig(USART1,USART_IT_TXE,ENABLE);//开启发送中断设置，此处最好不用
/*清除USART1发送完成标志*/
USART_ClearFlag(USART1,USART_FLAG_TC);//一个一个字节发送时使用USART_FLAG_TXE,连续发送时用USART_FLAG_TC
/*使能USART1*/
USART_Cmd(USART1,ENABLE);
}
/*******************************************************************************
* Function Name : fputc
* Description : Retargets the C library printf function to the USART.
*******************************************************************************/
int fputc(int ch, FILE *f)
{
/*重载fputc函数，例：写一个字符到USART1*/
USART_SendData(USART1,(u8)ch); //向USART1发送一个字符ch
/*等待USART1发送完毕*/
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);
return ch;
}
/*******************************************************************************
* Function Name : BSP_Init
* Description : Configures RCC,GPIO,NVIC
*******************************************************************************/
//void BSP_Init()
//{
/* Configure the system clocks */
// RCC_Configuration();
/* GPIO Configuration */
// GPIO_Configuration();
/* NVIC Configuration */
// NVIC_Configuration();
//}
/*******************************************************************************
* Function Name : delay_nus
* Description : delay n us
*******************************************************************************/
void delay_nus(u32 n) //延时n us: n>=6,最小延时单位6us
{
u8 j;
while(n--) // 外部晶振：8M；PLL：9；8M*9=72MHz
{
j=8; // 微调参数，保证延时的精度
while(j--);
}
}
/*******************************************************************************
* Function Name : delay_nms
* Description : delay n ms
*******************************************************************************/
void delay_nms(u32 n) //延时n ms
{
while(n--) // 外部晶振：8M；PLL：9；8M*9=72MHz
delay_nus(1100); // 1ms延时补偿
}
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