stm32部分模块编程步骤.doc

说明：（只要是有关引脚的功能必须先配置GPIO端口）一.对于GPIO编程 步骤：1.使能IO口时钟。调用函数为RCC_APB2PeriphClockCmd()；（注意：结构体申明必须放在使能时钟语句之前） 2.初始化IO口参数。调用函数GPIO_Init()； 3.操作IO。#include led.h void LED_Init(void) /PB.5 GPIO_InitTypeDef GPIO_InitStructure; /定义GPIO的初始化结构体RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD, ENABLE);/使能相应的引脚时钟/*GPIO结构体中的三个参数赋值*/GPIO_InitStructure. GPIO_Pin= GPIO_Pin_5; GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode= GPIO_Mode_Out_PP； GPIO_Init(GPIOB, &GPIO_InitStructure);/初始化GPIO引脚PB.5 /PD.6 | PD.3 GPIO_InitStructure. GPIO_Pin= GPIO_Pin_6 | GPIO_Pin_3;GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz；GPIO_InitStructure.GPIO_Mode= GPIO_Mode_Out_PP； GPIO_Init(GPIOD, &GPIO_InitStructure);/初始化PD.6，PD.3 二.对于定时器TIMx 产生PWM波编程 步骤：1.开启TIMx时钟以及复用功能时钟，配置相关引脚为IO复用输出（若为默认引脚复用则可以不用配置）。 2.设置TIMx通道CHy重映射到相应IO引脚上； 3.初始化TIMx,设置TIMx的ARR和PSC； 4.设置TIMx的PWM模式，使能TIMx的CHy输出； 5.使能TIMx; 6.修改TIMx_CCRy来控制占空比。（可以修改TIM_OCInitStructure.TIM_Pulse或调用函数 TIM_SetCompare2()）.#include tim.h void TIM_PWM_Init(u16 aarr,u16 psc) /PB.5-TIM3_CH2 GPIO_InitTypeDef GPIO_InitStructure;/定义GPIO结构体 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;/定义定时器TIM结构体 TIM_OCInitTypeDef TIM_OCInitStructure;/定义输出比较结构体RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO,ENABLE); /开启GPIOB时钟和GPIO复用时钟RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);/开启时钟TIM3GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); /Timer3部分重映射 /TIM3_CH2-PB5 /注：默认是TIM3_CH2-PA7 /*GPIO引脚配置输出TIM3_CH2的PWM脉冲波形*/ GPIO_InitStructure. GPIO_Pin= GPIO_Pin_5; GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode= GPIO_Mode_AF_PP;/此处的模式系统有规定需查阅手册得到. GPIO_Init(GPIOB,&GPIO_InitStructure);/引脚初始化PB.5/*定时器TIM初始化*/ TIM_TimeBaseStructure.TIM_Prescaler=arr; /设置在下一个更新事件装入活动的/自动重装载寄存器周期的值 TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; /TIM向上计/数模式TIM_TimeBaseStructure.TIM_Period= psc; /设置用来作为TIMx时钟频率除数的/预分频值TIM_TimeBaseStructure.TIM_ClockDivision=0; /设置时钟分割:TDTS = Tck_timTIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);/初始化TIM /*TIMx_PWM模式配置*/ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; /选择定时器模/式:TIM的PWM模式2TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; /比较输出使能/TIM_OCInitStructure.TIM_Pulse = 0; /设置待装入捕获比较寄存器的脉冲值TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /输出极性:TIM输出比较极性高TIM_OC2Init(TIM3, &TIM_OCInitStructure); /根据TIM_OCInitStruct中指定的参数初始化外设TIMxTIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); /使能TIMx在CCR2上的预装载寄存器TIM_ARRPreloadConfig(TIM3, ENABLE); /使能TIMx在ARR上的预装载寄存器TIM_Cmd(TIM3, ENABLE); /使能TIMx外设三.对于定时器TIMx输入捕获编程 步骤：1.开启TIMx时钟和GPIO时钟，配置GPIO参数； 2.初始化TIMx的ARR和PSC； 3.设置TIMx的输入比较参数并开启输入捕获； 4.使能捕获中断和更新中断； 5.设置中断分组，编写中断服务函数； 6.使能定时器。void TIM5_Cap_Init(u16 arr , u16 psc) TIM_ICInitTypeDef TIM5_ICInitStructure;GPIO_InitTypeDef GPIO_InitStructure;TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; NVIC_InitTypeDef NVIC_InitStructure;RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);/使能TIM5时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); /使能GPIOA时钟GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; /PA0 清除之前设置 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; /PA0 输入 GPIO_Init(GPIOA, &GPIO_InitStructure);GPIO_ResetBits(GPIOA,GPIO_Pin_0); /PA0 下拉/初始化定时器5 TIM5 TIM_TimeBaseStructure.TIM_Period = arr; /设定计数器自动重装值 TIM_TimeBaseStructure.TIM_Prescaler =psc; /预分频器 TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; /设置时钟分割:TDTS = Tck_timTIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; /TIM向上计数模式TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); /根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位/初始化TIM5输入捕获参数TIM5_ICInitStructure.TIM_Channel = TIM_Channel_1; /CC1S=01 选择输入端 IC1/映射到TI1上TIM5_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;/上升沿捕获TIM5_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; /映射到TI1上TIM5_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; /配置输入分频,不分频 TIM5_ICInitStructure.TIM_ICFilter = 0x00;/IC1F=0000 配置输入滤波器 不滤波 TIM_ICInit(TIM5, &TIM5_ICInitStructure);/中断分组初始化NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn; /TIM3中断NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; /先占优先级2级NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; /从优先级0级NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /IRQ通道被使能NVIC_Init(&NVIC_InitStructure); /根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC1,ENABLE);/允许更新中断 ,允许CC1IE捕获中断 TIM_Cmd(TIM5,ENABLE ); /使能定时器5 /定时器5中断服务程序 void TIM5_IRQHandler(void) if(TIM5CH1_CAPTURE_STA&0X80)=0)/还未成功捕获 if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)if(TIM5CH1_CAPTURE_STA&0X40)/已经捕获到高电平了if (TIM_GetITStatus(TIM5, TIM_IT_CC1) != RESET)/捕获1发生捕获事件 TIM_ClearITPendingBit(TIM5, TIM_IT_CC1|TIM_IT_Update); /清除中断标志位四对于外部中断EXTI的编程配置GPIO端口，EXTI_InitTypeDef EXTI_InitStructure;GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource2);/GPIOE.2 中断线EXTI_InitStructure.EXTI_Line=EXTI_Line2;/端口对应的EXTI外部中断线 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;/模式是中断模式而不是事件模式 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;/中断触发方式 EXTI_InitStructure.EXTI_LineCmd = ENABLE;/使能中断线 EXTI_Init(&EXTI_InitStructure); /根据EXTI_InitStruct中指定的参数初始化外设EXTI寄存器服务程序/外部中断2服务程序void EXTI2_IRQHandler(void)delay_ms(10);/消抖if(KEY2=0) /按键KEY2LED0=!LED0; EXTI_ClearITPendingBit(EXTI_Line2); /清除LINE2上的中断标志位 四外部中断EXIT编程1. 初始化I/O口为输入；2.开启复用时钟，设置I/O口与中断线的映射关系；3.初始化线上中断，设置触发条件等；4.配置中断分组（NVIC），并使能中断；5.编写中断服务程序。void EXTIX_Init(void)NVIC_InitTypeDef NVIC_InitStructure;EXTI_InitTypeDef EXTI_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);/使能复用功能时钟/中断线以及中断初始化配置 下降沿触发 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource0); EXTI_InitStructure.EXTI_Line=EXTI_Line0;/KEY0 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); /根据EXTI_InitStruct中指定的参数初始化外设EXTI寄存器NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;/使能按键所在的外部中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;/抢占优先级2， NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03;/子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;/使能外部中断通道 NVIC_Init(&NVIC_InitStructure); /外部中断0服务程序 void EXTI0_IRQHandler(void)delay_ms(10);/消抖if(KEY3=1) /WK_UP按键 BEEP=!BEEP;EXTI_ClearITPendingBit(EXTI_Line0); /清除LINE0上的中断标志位 五用FMSC驱动TFT_LCD编程步骤 1.初始化相关的GPIO口 与FMSC有关的RD、 WR、 CS、 RS、 D15-D0要设置成复用输出模式，其他的如RESET、LIGHT等为一般输出模式 2.初始化FMSC功能，LCD初始化（注意有时需要在开始设置是复位一下） 3.设置DATA_addr和REG_addr初始化地址 4.进行相关显示操作初始化（IO。FMSC。LCD）：void LCD_Init(void) GPIO_InitTypeDef GPIO_InitStructure;FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; FSMC_NORSRAMTimingInitTypeDef readWriteTiming; FSMC_NORSRAMTimingInitTypeDef writeTiming; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC,ENABLE);/使能FSMC时钟RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE|RCC_APB2Periph_GPIOG|RCC_APB2Periph_AFIO,ENABLE);/使能PORTB,D,E,G以及AFIO复用功能时钟/PD13 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13; /PD13 推挽输出 背光 初始化为高电平 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure);/GPIO_SetBits(GPIOD, GPIO_Pin_13);/PB5 LED0GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;GPIO_Init(GPIOB, &GPIO_InitStructure);/PE1 复位GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;GPIO_Init(GPIOE, &GPIO_InitStructure); /PORTD复用推挽输出 D15-D13,D3-D0GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_4|GPIO_Pin_5| GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_14| GPIO_Pin_15|GPIO_Pin_7|GPIO_Pin_11; /PORTD复用推挽输出 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; /复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); /PORTE复用推挽输出 D12-D4GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11| GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;/PORTD复用推挽输出 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; /复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOE, &GPIO_InitStructure); /FMSC读参数readWriteTiming.FSMC_AddressSetupTime = 0x01; /地址建立时间（ADDSET）为2个HCLK 1/36M=27ns readWriteTiming.FSMC_AddressHoldTime = 0x00; /地址保持时间（ADDHLD）模式A未用到 readWriteTiming.FSMC_DataSetupTime = 0x0f; / 数据保存时间为16个HCLK,因为液晶驱动IC的读数据的时候，速度不能太快，尤其对1289这个IC。 readWriteTiming.FSMC_BusTurnAroundDuration = 0x00; readWriteTiming.FSMC_CLKDivision = 0x00; readWriteTiming.FSMC_DataLatency = 0x00; readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; /模式A /FMSC写参数writeTiming.FSMC_AddressSetupTime = 0x00; /地址建立时间（ADDSET）为1个HCLK writeTiming.FSMC_AddressHoldTime = 0x00; /地址保持时间（A writeTiming.FSMC_DataSetupTime = 0x03; /数据保存时间为4个HCLK writeTiming.FSMC_BusTurnAroundDuration = 0x00; writeTiming.FSMC_CLKDivision = 0x00; writeTiming.FSMC_DataLatency = 0x00; writeTiming.FSMC_AccessMode = FSMC_AccessMode_A; /模式A /FMSC初始化 FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;/ 这里我们使用NE1 ，也就对应BTCR6,7。 FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; / 不复用数据地址 FSMC_NORSRAMInitStructure.FSMC_MemoryType =FSMC_MemoryType_SRAM;/ FSMC_MemoryType_SRAM; /SRAM FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;/存储器数据宽度为16bit FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode =FSMC_BurstAccessMode_Disable;/ FSMC_BurstAccessMode_Disable; FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait=FSMC_AsynchronousWait_Disable; FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;/ 存储器写使能 FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; / 读写使用不同的时序 FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming; /读写时序 FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming; /写时序 FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); /初始化FSMC配置 FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE); / 使能BANK1 lcddev.id=0x9325;/试验用的TFT LCD 的型号 if(lcddev.id=0x9325)/9325/*PE1产生上升沿复位*/GPIO_ResetBits(GPIOE, GPIO_Pin_1); delay_ms(100); GPIO_SetBits(GPIOE, GPIO_Pin_1 ); delay_ms(100); /*/LCD_WriteReg(0x00E3,0x3008); LCD_WriteReg(0x00E3, 0x3008); / Set internal timingLCD_WriteReg(0x00E7, 0x0012); / Set internal timingLCD_WriteReg(0x00EF, 0x1231); / Set internal timingLCD_WriteReg(0x0000, 0x0001); / Start OscillationLCD_WriteReg(0x0001, 0x0100); / set SS and SM bitLCD_WriteReg(0x0002, 0x0700); / set 1 line inversionLCD_WriteReg(0x0003, 0x1018); / set GRAM write direction and BGR=0,262K colors,1 transfers/pixel.LCD_WriteReg(0x0004, 0x0000); / Resize registerLCD_WriteReg(0x0008, 0x0202); / set the back porch and front porchLCD_WriteReg(0x0009, 0x0000); / set non-display area refresh cycle ISC3:0LCD_WriteReg(0x000A, 0x0000); / FMARK functionLCD_WriteReg(0x000C, 0x0000); / RGB interface settingLCD_WriteReg(0x000D, 0x0000); / Frame marker PositionLCD_WriteReg(0x000F, 0x0000); / RGB interface polarity/Power On sequence LCD_WriteReg(0x0010, 0x0000); / SAP, BT3:0, AP, DSTB, SLP, STBLCD_WriteReg(0x0011, 0x0007); / DC12:0, DC02:0, VC2:0LCD_WriteReg(0x0012, 0x0000); / VREG1OUT voltageLCD_WriteReg(0x0013, 0x0000); / VDV4:0 for VCOM amplitudedelay_ms(200); / Dis-charge capacitor power voltageLCD_WriteReg(0x0010, 0x1690); / SAP, BT3:0, AP, DSTB, SLP, STBLCD_WriteReg(0x0011, 0x0227); / R11h=0x0221 at VCI=3.3V, DC12:0, DC02:0, VC2:0delay_ms(50); / Delay 50msLCD_WriteReg(0x0012, 0x001C); / External reference voltage= Vci;delay_ms(50); / Delay 50msLCD_WriteReg(0x0013, 0x1800); / R13=1200 when R12=009D;VDV4:0 for VCOM amplitudeLCD_WriteReg(0x0029, 0x001C); / R29=000C when R12=009D;VCM5:0 for VCOMHLCD_WriteReg(0x002B, 0x000D); / Frame Rate = 91Hzdelay_ms(50); / Delay 50msLCD_WriteReg(0x0020, 0x0000); / GRAM horizontal AddressLCD_Wr