沒啥說的，直入正題
初始化如果有問題先看有沒有打開端口，串口有時候如果不行就把初始化位置移一下，
/*********************************************************************
************************串口*****************************************
******************************************************************/
串口參考printf文件， STM_EVAL_COMInit參考EVAL_B文件，接收參考Interrupt里面的中斷，
以及中斷優(yōu)先級配置，串口發(fā)送更改的是printf文件
void STM_EVAL_COMInit( USART_InitTypeDef* USART_InitStruct)
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART Rx as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* Enable the USART2 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* USART configuration */
USART_Init(USART2, USART_InitStruct);
/* Enable USART */
USART_Cmd(USART2, ENABLE);
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);
}
void usart_init()
{
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
STM_EVAL_COMInit( &USART_InitStructure);
}
void usart_data_while(u8* ch)
{
while(*ch)
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(USART2, (uint8_t) *ch++);
/* Loop until the end of transmission */
while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET)
{}
}
}
uint8_t RxBuffer1[20];
__IO uint8_t RxCounter1;
void USART2_IRQHandler(void)
{
if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
{
/* Read one byte from the receive data register */
RxBuffer1[RxCounter1++] = USART_ReceiveData(USART2);
if(RxCounter1 == 20)
{
RxCounter1=0;
}
}
}
/*********************************************************************
************************輸入捕獲*****************************************
******************************************************************/
參考InputCapture文件，記得中斷讀值函數(shù)要分開
void RCC_Configuration_tim_input(void)
{
/* TIM2 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* GPIOA and GPIOB clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
}
/**
* @brief Configure the GPIOD Pins.
* @param None
* @retval None
*/
void GPIO_Configuration_tim_input(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* TIM2 channel 2 pin (PA.07) configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/**
* @brief Configure the nested vectored interrupt controller.
* @param None
* @retval None
*/
void NVIC_Configuration_tim_input(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the TIM2 global Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void tim_input_init()
{
TIM_ICInitTypeDef TIM_ICInitStructure;
/* System Clocks Configuration */
RCC_Configuration_tim_input();
/* NVIC configuration */
NVIC_Configuration_tim_input();
/* Configure the GPIO ports */
GPIO_Configuration_tim_input();
/* TIM2 configuration: Input Capture mode ---------------------
The external signal is connected to TIM2 CH2 pin (PA.07)
The Rising edge is used as active edge,
The TIM2 CCR2 is used to compute the frequency value
------------------------------------------------------------ */
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x0;
TIM_ICInit(TIM2, &TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;
TIM_ICInit(TIM2, &TIM_ICInitStructure);
/* TIM enable counter */
TIM_Cmd(TIM2, ENABLE);
/* Enable the CC2 Interrupt Request */
TIM_ITConfig(TIM2, TIM_IT_CC2|TIM_IT_CC3, ENABLE);
}
__IO uint16_t IC3ReadValue11 = 0, IC3ReadValue21 = 0;
__IO uint16_t CaptureNumber1 = 0;
__IO uint32_t Capture1 = 0;
__IO uint32_t TIM2Freq1 = 0;
__IO uint16_t IC3ReadValue12 = 0, IC3ReadValue22 = 0;
__IO uint16_t CaptureNumber2 = 0;
__IO uint32_t Capture2 = 0;
__IO uint32_t TIM2Freq2 = 0;
void TIM2_IRQHandler(void)
{
if(TIM_GetITStatus(TIM2, TIM_IT_CC2) == SET)
{
/* Clear TIM2 Capture compare interrupt pending bit */
TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
if(CaptureNumber1 == 0)
{
/* Get the Input Capture value */
IC3ReadValue11 = TIM_GetCapture2(TIM2);
CaptureNumber1 = 1;
}
else if(CaptureNumber1 == 1)
{
/* Get the Input Capture value */
IC3ReadValue21 = TIM_GetCapture2(TIM2);
/* Capture computation */
if (IC3ReadValue21 > IC3ReadValue11)
{
Capture1 = (IC3ReadValue21 - IC3ReadValue11);
}
else
{
Capture1 = ((0xFFFF - IC3ReadValue11) + IC3ReadValue21);
}
/* Frequency computation */
TIM2Freq1 = (uint32_t) SystemCoreClock / Capture1;
CaptureNumber1 = 0;
}
}
if(TIM_GetITStatus(TIM2, TIM_IT_CC3) == SET)
{
/* Clear TIM2 Capture compare interrupt pending bit */
TIM_ClearITPendingBit(TIM2, TIM_IT_CC3);
if(CaptureNumber2 == 0)
{
/* Get the Input Capture value */
IC3ReadValue12 = TIM_GetCapture3(TIM2);
CaptureNumber2 = 1;
}
else if(CaptureNumber2 == 1)
{
/* Get the Input Capture value */
IC3ReadValue22 = TIM_GetCapture3(TIM2);
/* Capture computation */
if (IC3ReadValue22 > IC3ReadValue12)
{
Capture2 = (IC3ReadValue22 - IC3ReadValue12);
}
else
{
Capture2 = ((0xFFFF - IC3ReadValue12) + IC3ReadValue22);
}
/* Frequency computation */
TIM2Freq2 = (uint32_t) SystemCoreClock / Capture2;
CaptureNumber2 = 0;
}
}
}
另外獲取占空比請參考pwm_input,頻率未測
/*********************************************************************
************************pwm改變占空比*****************************
******************************************************************/
參考PWM_Output
void RCC_Configuration_pwm(void)
{
/* TIM3 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
/* GPIOA and GPIOB clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_AFIO, ENABLE);
}
/**
* @brief Configure the TIM3 Ouput Channels.
* @param None
* @retval None
*/
void GPIO_Configuration_pwm(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* GPIOA Configuration:TIM3 Channel1, 2, 3 and 4 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void pwm_out_init()
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
uint16_t CCR1_Val = 333;
uint16_t CCR2_Val = 249;
uint16_t CCR3_Val = 166;
uint16_t CCR4_Val = 83;
uint16_t PrescalerValue = 0;
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration_pwm();
/* GPIO Configuration */
GPIO_Configuration_pwm();
/* -----------------------------------------------------------------------
TIM3 Configuration: generate 4 PWM signals with 4 different duty cycles:
The TIM3CLK frequency is set to SystemCoreClock (Hz), to get TIM3 counter
clock at 24 MHz the Prescaler is computed as following:
- Prescaler = (TIM3CLK / TIM3 counter clock) - 1
SystemCoreClock is set to 72 MHz for Low-density, Medium-density, High-density
and Connectivity line devices and to 24 MHz for Low-Density Value line and
Medium-Density Value line devices
The TIM3 is running at 36 KHz: TIM3 Frequency = TIM3 counter clock/(ARR + 1)
= 24 MHz / 666 = 36 KHz
TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR)* 100 = 50%
TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR)* 100 = 37.5%
TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR)* 100 = 25%
TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR)* 100 = 12.5%
----------------------------------------------------------------------- */
/* Compute the prescaler value */
PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;//設置計數(shù)速度，當前24000000hz,
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 24000-1;//設置重裝值，加到這個值就重裝
TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
/* PWM1 Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR1_Val;//設置翻轉值
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);//初始化TIM_-CC1
/* PWM1 Mode configuration: Channel2 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR2_Val;
TIM_OC2Init(TIM3, &TIM_OCInitStructure);//初始化TIM_-CC2
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
/* PWM1 Mode configuration: Channel3 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR3_Val;
TIM_OC3Init(TIM3, &TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
/* PWM1 Mode configuration: Channel4 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR4_Val;
TIM_OC4Init(TIM3, &TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM3, ENABLE);
/* TIM3 enable counter */
TIM_Cmd(TIM3, ENABLE);
}
改變占空比TIM_SetCompare1(TIM3,12000);
改變頻率，參考TIM9_OCToggle
void RCC_Configuration_pwm(void)
{
/* TIM3 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
/* GPIOA and GPIOB clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);
}
/**
* @brief Configure the TIM3 Ouput Channels.
* @param None
* @retval None
*/
void GPIO_Configuration_pwm(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* GPIOA Configuration:TIM3 Channel1, 2, 3 and 4 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void NVIC_Configuration_pwm(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the TIM3 global Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void pwm_out_init()
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
uint16_t CCR1Val = 333;
uint16_t CCR2Val = 249;
uint16_t PrescalerValue = 0;
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration_pwm();
/* GPIO Configuration */
GPIO_Configuration_pwm();
/* NVIC Configuration */
NVIC_Configuration_pwm();
/* -----------------------------------------------------------------------
TIM3 Configuration: generate 4 PWM signals with 4 different duty cycles:
The TIM3CLK frequency is set to SystemCoreClock (Hz), to get TIM3 counter
clock at 24 MHz the Prescaler is computed as following:
- Prescaler = (TIM3CLK / TIM3 counter clock) - 1
SystemCoreClock is set to 72 MHz for Low-density, Medium-density, High-density
and Connectivity line devices and to 24 MHz for Low-Density Value line and
Medium-Density Value line devices
The TIM3 is running at 36 KHz: TIM3 Frequency = TIM3 counter clock/(ARR + 1)
= 24 MHz / 666 = 36 KHz
TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR)* 100 = 50%
TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR)* 100 = 37.5%
TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR)* 100 = 25%
TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR)* 100 = 12.5%
----------------------------------------------------------------------- */
/* Compute the prescaler value */
PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 65535;
TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
/* Output Compare Toggle Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR1Val;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Disable);
/* Output Compare Toggle Mode configuration: Channel2 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR2Val;
TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Disable);
/* TIM enable counter */
TIM_Cmd(TIM3, ENABLE);
/* TIM IT enable */
TIM_ITConfig(TIM3, TIM_IT_CC1 | TIM_IT_CC2, ENABLE);
}
uint16_t capture = 0;
__IO uint16_t CCR1Val;//改變這個值就可以改變頻率
__IO uint16_t CCR2Val;
void TIM3_IRQHandler(void)
{
/* TIM3_CH1 toggling with frequency = 366.2 Hz */
if (TIM_GetITStatus(TIM3, TIM_IT_CC1) != RESET)
{
TIM_ClearITPendingBit(TIM3, TIM_IT_CC1 );
capture = TIM_GetCapture1(TIM3);
TIM_SetCompare1(TIM3, capture + CCR1Val );
}
/* TIM3_CH2 toggling with frequency = 732.4 Hz */
if (TIM_GetITStatus(TIM3, TIM_IT_CC2) != RESET)
{
TIM_ClearITPendingBit(TIM3, TIM_IT_CC2);
capture = TIM_GetCapture2(TIM3);
TIM_SetCompare2(TIM3, capture + CCR2Val);
}
}
/*************************************************************
***************************EXTI********************************
**************************************************************/
參考exti程序，EXTI9_5_IRQn這個記得用EXTI_Line8，另外一個不知道為什么不行。
u8 key_value=0;
void EXTI0_Config(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB, ENABLE);
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Enable AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Connect EXTI0 Line to PA.00 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
/* Configure EXTI0 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI0 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Connect EXTI8 Line to PG.08 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource8);
/* Configure EXTI8 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI9_5 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_Init(&NVIC_InitStructure);
/* Connect EXTI8 Line to PG.08 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource1);
/* Configure EXTI8 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line1;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI9_5 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;
NVIC_Init(&NVIC_InitStructure);
/* Connect EXTI8 Line to PG.08 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource2);
/* Configure EXTI8 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line2;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI9_5 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line0) != RESET)
{
key_value=1;
/* Clear the EXTI line 0 pending bit */
EXTI_ClearITPendingBit(EXTI_Line0);
}
}
/**
* @brief This function handles External lines 9 to 5 interrupt request.
* @param None
* @retval None
*/
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
key_value=2;
/* Clear the EXTI line 8 pending bit */
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
void EXTI1_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line1) != RESET)
{
key_value=3;
/* Clear the EXTI line 0 pending bit */
EXTI_ClearITPendingBit(EXTI_Line1);
}
}
void EXTI2_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line2) != RESET)
{
key_value=4;
/* Clear the EXTI line 0 pending bit */
EXTI_ClearITPendingBit(EXTI_Line2);
}
}
/************************************************************
***************************RTC*******************************
*************************************************************/
初始化參考LSI_Calib，最后兩句話記得不要，是備份啥的，我們沒有電池，所以沒有備份，
獲取時間參考Calendar這個文件里面的。
void RTC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure one bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
/* 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);
/* Enable PWR and BKP clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);
/* Reset Backup Domain */
BKP_DeInit();
/* Enable the LSI OSC */
RCC_LSICmd(ENABLE);
/* Wait till LSI is ready */
while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
{}
/* Select the RTC Clock Source */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
/* Enable RTC Clock */
RCC_RTCCLKCmd(ENABLE);
/* Wait for RTC registers synchronization */
RTC_WaitForSynchro();
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Enable the RTC Second */
RTC_ITConfig(RTC_IT_SEC, ENABLE);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Set RTC prescaler: set RTC period to 1sec */
RTC_SetPrescaler(40000);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Enable the RTC Second */
RTC_ITConfig(RTC_IT_SEC, ENABLE);
}
/**
* @brief Adjusts time.
* @param None
* @retval None
*/
void Time_Adjust(void)
{
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Change the current time */
RTC_SetCounter(0);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
uint32_t THH = 0, TMM = 0, TSS = 0;
/**
* @brief Displays the current time.
* @param TimeVar: RTC counter value.
* @retval None
*/
void Time_Display(uint32_t TimeVar)
{
/* Reset RTC Counter when Time is 23:59:59 */
if (RTC_GetCounter() == 0x0001517F)
{
RTC_SetCounter(0x0);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/* Compute hours */
THH = TimeVar / 3600;
/* Compute minutes */
TMM = (TimeVar % 3600) / 60;
/* Compute seconds */
TSS = (TimeVar % 3600) % 60;
}
__IO uint32_t TimeDisplay = 0;
/**
* @brief Shows the current time (HH:MM:SS) on the Hyperterminal.
* @param None
* @retval None
*/
void Time_Show(void)
{
/* If 1s has been elapsed */
if (TimeDisplay == 1)
{
/* Display current time */
Time_Display(RTC_GetCounter());
TimeDisplay = 0;
}
}
void RTC_IRQHandler(void)
{
if (RTC_GetITStatus(RTC_IT_SEC) != RESET)
{
/* Clear the RTC Second interrupt */
RTC_ClearITPendingBit(RTC_IT_SEC);
/* Enable time update */
TimeDisplay = 1;
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
}
/************************************************************
***************************ADC*******************************
*************************************************************/
ADC參考ADC一路的，看下面有幾個需要改的地方
void RCC_Configuration_adc(void)
{
#if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
/* ADCCLK = PCLK2/2 */
RCC_ADCCLKConfig(RCC_PCLK2_Div2);
#else
/* ADCCLK = PCLK2/4 */
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
#endif
/* Enable ADC1 and GPIOC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB, ENABLE);
}
/**
* @brief Configures the different GPIO ports.
* @param None
* @retval None
*/
void GPIO_Configuration_adc(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure PC.04 (ADC Channel14) as analog input -------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
#define ADC1_DR_Address ((uint32_t)0x4001244C)
void adc_init()
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration_adc();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration_adc();
/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;//改了
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//改了
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);//上面一句話沒了
/* Enable ADC1 reset calibration register */
ADC_ResetCalibration(ADC1);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1));
/* Start ADC1 calibration */
ADC_StartCalibration(ADC1);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));
}
u16 adc_data(u8 ch)//新加，第一句是選擇通道（初始化里面的），第二句開始轉換（初始化里面的），
第三句等待轉換結束，背下來，官方庫文件在ADC.H里面，第四句在3ADCs_DMA中斷函數(shù)獲取函數(shù)里面
{
/* ADC1 regular channel14 configuration */
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_55Cycles5);
/* Start ADC1 Software Conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC));
return ADC_GetConversionValue(ADC1);
}
/***********************************************
***************BUZZER***************************
*************************************************/
參考GPIO-JTAG_Remap文件，打開了重映射
void bueezr_init()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
/* Disable the Serial Wire Jtag Debug Port SWJ-DP */
GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);//打開了重映射
/* Configure PA.13 (JTMS/SWDAT), PA.14 (JTCK/SWCLK) and PA.15 (JTDI) as
output push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_ResetBits(GPIOB,GPIO_Pin_4);
}
/***********************************************
*****************LED****************************
************************************************/
void led_init()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE);
/* Configure PD0 and PD2 in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = 0XFF00;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = 0X0004;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,0XFF00);
GPIO_SetBits(GPIOD,0X0004);
GPIO_ResetBits(GPIOD,0x0004);
}
u16 led_data=0xff00;//保存上次的燈
void led_one(u8 led,_Bool Flag)
{
GPIO_SetBits(GPIOC,led_data);
led=led+7;
if(Flag) GPIO_ResetBits(GPIOC,1<<led);
else GPIO_SetBits(GPIOC,1<<led);
GPIO_SetBits(GPIOD,0X0004);
GPIO_ResetBits(GPIOD,0x0004);
led_data=GPIO_ReadOutputData(GPIOC);
}
/***********************************************
*****************DHT11***************************
************************************************/
一定要這么寫！！！不然沒值
dht11_value=dht11_read();
Delay_Ms(10);
if(dht11_value!=0)
{
sprintf(temp,"%s%2d%%"," shidu:",dht11_value>>24);
LCD_DisplayStringLine(Line4 ,temp);
sprintf(temp,"%s%2d"," wendu:",(dht11_value>>8)&0XFF);
LCD_DisplayStringLine(Line6 ,temp);
}
提示，比賽一般沒有提供值獲取函數(shù)，每次練習一定的自己手寫，切記！！！
ls1302讀寫地址0x38,
x軸0x29
y軸0x2b,
z軸0x2d
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