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)
{}
/* 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
------------------------------------------------------------ */
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();
/* -----------------------------------------------------------------------
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
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();
/* -----------------------------------------------------------------------
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
/* 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);
}
}
/* 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();
}
/* 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();
}
__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参考ADC一路的，看下面有几个需要改的地方
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