/******************************************************************************* 編譯環境: EWARM V5.30 硬件環境: DZY2.PCB STM32 FW: V3.0.0 作者 : szlihongtao ****************************************************************************** REV : V1.00 DATE : 2011-04-18 NOTE : *******************************************************************************/ #include "stm32f10x.h" #include "stm32_m.h" #include "dzy.h" #include "myRCC.h" //****************************************************************************** #define TIM1_CCR3_Address 0x40012C3C bit f_tb; // 基本定時標志 bit f_100ms, f_1000ms; INT16U cnt_test; // 計數器，僅供軟件調試使用 float clk_sys; // 僅供軟件調試使用 #if 1 uint16_t SRC_Buffer[ ] = { 72 * 5 }; // 由於載波頻率取20kHZ，所以最大脈沖寬度不要超50us,即常數不要超過72*50 #else uint16_t SRC_Buffer[]= { 72*2,72*5,72*10,72*20,72*40,72*10}; // 由於載波頻率取20kHZ，所以最大脈沖寬度不要超50us,即常數不要超過72*50 #endif //****************************************************************************** // 延時程序，單位為*1ms //****************************************************************************** void delayms( INT16U cnt ) { //#define CONST_1MS 7333 // 72MhZ //#define CONST_1MS 3588 // 32MhZ #define CONST_1MS (105*FCLK) INT16U i; __no_operation( ); while ( cnt-- ) for ( i = 0; i < CONST_1MS; i++ ) ; } //****************************************************************************** // pcb上的指示燈 //****************************************************************************** static void led_toggle( void ) { GPIOC->ODR ^= GPIO_Pin_7; // led2 toogle GPIOC->ODR ^= GPIO_Pin_6; // led3 toogle } //****************************************************************************** // 時鍾設置初始化 //****************************************************************************** static void RCC_Configuration( void ) { ErrorStatus HSEStartUpStatus; /* RCC_AdjustHSICalibrationValue 調整內部高速晶振（HSI）校准值 RCC_ITConfig 使能或者失能指定的RCC中斷 RCC_ClearFlag 清除RCC的復位標志位 RCC_GetITStatus 檢查指定的RCC中斷發生與否 RCC_ClearITPendingBit 清除RCC的中斷待處理位 */ /* RCC system reset(for debug purpose) */ // 時鍾系統復位 RCC_DeInit( ); // 使能外部的8M晶振 // 設置外部高速晶振（HSE） /* Enable HSE */ RCC_HSEConfig( RCC_HSE_ON ); // 使能或者失能內部高速晶振（HSI） RCC_HSICmd( DISABLE ); // 等待HSE起振 // 該函數將等待直到HSE就緒，或者在超時的情況下退出 /* Wait till HSE is ready */ HSEStartUpStatus = RCC_WaitForHSEStartUp( ); if ( HSEStartUpStatus == SUCCESS ) { // 設置AHB時鍾（HCLK） RCC_HCLKConfig( RCC_HCLK_Div_ ); // 36 MHz // 設置低速AHB時鍾（PCLK1） RCC_PCLK1Config( RCC_PCLK1_Div_ ); // 2.25 MHz // 設置高速AHB時鍾（PCLK2） RCC_PCLK2Config( RCC_PCLK2_Div_ ); // 2.25 MHz /* ADCCLK = PCLK2/8 */ // 設置ADC時鍾（ADCCLK） RCC_ADCCLKConfig( RCC_ADC_DIV_ ); // 0.281Mhz // 設置USB時鍾（USBCLK） // USB時鍾 = PLL時鍾除以1.5 //RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5); // 設置外部低速晶振（LSE） RCC_LSEConfig( RCC_LSE_OFF ); // 使能或者失能內部低速晶振（LSI） // LSE晶振OFF RCC_LSICmd( DISABLE ); // 設置RTC時鍾（RTCCLK） // 選擇HSE時鍾頻率除以128作為RTC時鍾 //RCC_RTCCLKConfig(RCC_RTCCLKSource_HSE_Div128); // 使能或者失能RTC時鍾 // RTC時鍾的新狀態 RCC_RTCCLKCmd( DISABLE ); /* Flash 2 wait state */ FLASH_SetLatency( FLASH_Latency_2 ); /* Enable Prefetch Buffer */ FLASH_PrefetchBufferCmd( FLASH_PrefetchBuffer_Enable ); /* PLLCLK = 8MHz * 9 = 72 MHz */ // 設置PLL時鍾源及倍頻系數 RCC_PLLConfig( RCC_PLLSource_HSE_Div1, RCC_PLLMul_ ); /* Enable PLL */ // 使能或者失能PLL RCC_PLLCmd( ENABLE ); /* Wait till PLL is ready */ // 檢查指定的RCC標志位設置與否 while ( RCC_GetFlagStatus( RCC_FLAG_PLLRDY ) == RESET ) { } /* Select PLL as system clock source */ // 設置系統時鍾（SYSCLK） RCC_SYSCLKConfig( RCC_SYSCLKSource_PLLCLK ); /* Wait till PLL is used as system clock source */ // 返回用作系統時鍾的時鍾源 while ( RCC_GetSYSCLKSource( ) != 0x08 ) { } } // 使能或者失能AHB外設時鍾 RCC_AHBPeriphClockCmd( RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2 | RCC_AHBPeriph_SRAM | RCC_AHBPeriph_FLITF | RCC_AHBPeriph_CRC | RCC_AHBPeriph_FSMC | RCC_AHBPeriph_SDIO, DISABLE ); // 使能或者失能APB1外設時鍾 RCC_APB1PeriphClockCmd( RCC_APB1Periph_ALL, DISABLE ); // 強制或者釋放高速APB（APB2）外設復位 RCC_APB2PeriphResetCmd( RCC_APB2Periph_ALL, ENABLE ); // 退出復位狀態 RCC_APB2PeriphResetCmd( RCC_APB2Periph_ALL, DISABLE ); // 強制或者釋放低速APB（APB1）外設復位 RCC_APB1PeriphResetCmd( RCC_APB1Periph_ALL, ENABLE ); // 強制或者釋放后備域復位 RCC_BackupResetCmd( ENABLE ); // 使能或者失能時鍾安全系統 RCC_ClockSecuritySystemCmd( DISABLE ); } //****************************************************************************** // NVIC設置 //****************************************************************************** void NVIC_Configuration( void ) { NVIC_InitTypeDef NVIC_InitStructure; /* Configure one bit for preemption priority */ NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 ); NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel5_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init( &NVIC_InitStructure ); } //****************************************************************************** // SysTick設置初始化 //****************************************************************************** static void SysTick_Config1( void ) { #if 1 #define SystemFreq (FCLK*1000000.0) // 單位為Hz #define TB_SysTick (TIME_TB*1000) // 單位為uS,與示波器實測一致 static INT32U ticks; ticks = ( INT32U )( ( TB_SysTick / 1000000.0 ) * SystemFreq ); SysTick_Config( ticks ); #endif } //****************************************************************************** // GPIO設置 //****************************************************************************** static void GPIO_Configuration( void ) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD | RCC_APB2Periph_AFIO, ENABLE ); //------------------------------------------------------------------------------ GPIO_Write( GPIOA, 0xffff ); /* GPIOA Configuration: Channel 3 as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_Init( GPIOA, &GPIO_InitStructure ); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; // GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_Init( GPIOA, &GPIO_InitStructure ); //------------------------------------------------------------------------------ GPIO_Write( GPIOB, 0xffff ); // 11111101-11111111 /* GPIOB Configuration: Channel 3N as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_Init( GPIOB, &GPIO_InitStructure ); //------------------------------------------------------------------------------ GPIO_Write( GPIOC, 0xff0f ); // 11111111-00001111 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_6 | GPIO_Pin_4 | GPIO_Pin_5; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init( GPIOC, &GPIO_InitStructure ); //------------------------------------------------------------------------------ GPIO_Write( GPIOD, 0xffff ); // 11111111-11111111 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init( GPIOD, &GPIO_InitStructure ); } //****************************************************************************** void DMA_Configuration( void ) { DMA_InitTypeDef DMA_InitStructure; RCC_AHBPeriphClockCmd( RCC_AHBPeriph_DMA1, ENABLE ); // dma1時鍾使能 DMA_DeInit( DMA1_Channel5 ); // DMA復位 DMA_StructInit( &DMA_InitStructure ); // DMA缺省的參數 DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t) TIM1_CCR3_Address; //外設地址 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t) SRC_Buffer; //內存地址 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; //dma傳輸方向,單向 DMA_InitStructure.DMA_BufferSize = sizeof( SRC_Buffer ) / 2; //設置DMA在傳輸時緩沖區的長度 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //設置DMA的外設遞增模式，一個外設 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //設置DMA的內存遞增模式， DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //外設數據字長 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //內存數據字長 //循環模式開啟，Buffer寫滿后，自動回到初始地址開始傳輸 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //設置DMA的傳輸模式 DMA_InitStructure.DMA_Priority = DMA_Priority_High; //設置DMA的優先級別 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //設置DMA的2個memory中的變量互相訪問 DMA_Init( DMA1_Channel5, &DMA_InitStructure ); DMA_ClearFlag( DMA1_IT_TC5 ); DMA_ITConfig( DMA1_Channel5, DMA_IT_TC, ENABLE ); DMA_Cmd( DMA1_Channel5, ENABLE ); } /* TIM1 DMA Transfer example ------------------------------------------------- TIM1CLK = 72 MHz, Prescaler = 0, TIM1 counter clock = 72 MHz The TIM1 Channel3 is configured to generate a complementary PWM signal with a frequency equal to: TIM1 counter clock / (TIM1_Period + 1) = 17.57 KHz and a variable duty cycle that is changed by the DMA after a specific number of Update DMA request. The number of this repetitive requests is defined by the TIM1 Repetion counter, each 3 Update Requests, the TIM1 Channel 3 Duty Cycle changes to the next new value defined by the SRC_Buffer . -----------------------------------------------------------------------------*/ //****************************************************************************** void Tim1_Configuration( void ) { INT16U TIM_Prescaler, TIM_Period; INT32U utemp; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_TIM1, ENABLE ); TIM_DeInit( TIM1 ); utemp = ( INT32U )( TIM1CLK * 1000000.0 ) / Freq_PWM; TIM_Prescaler = utemp / 65536; ++TIM_Prescaler; // 注意這句話，一定要++ utemp = ( INT32U )( TIM1CLK * 1000000.0 ) / TIM_Prescaler; // 分頻后的定時器輸入頻率 TIM_Period = utemp / Freq_PWM; // 周期常數 TIM_TimeBaseStructure.TIM_Period = TIM_Period - 1; TIM_TimeBaseStructure.TIM_Prescaler = TIM_Prescaler - 1; TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseStructure.TIM_RepetitionCounter = 1 - 1; // 每次直接更新 TIM_TimeBaseInit( TIM1, &TIM_TimeBaseStructure ); //------------------------------------------------------------------------------ /* PWM1 Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; // 使能輸出比較狀態 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable; // 失能輸出比較N狀態 TIM_OCInitStructure.TIM_Pulse = 72; /* TIM_OCMode_PWM2 TIM_OCPolarity_Low 正脈沖模式 TIM_OCMode_PWM2 TIM_OCPolarity_High 負脈沖模式 TIM_OCMode_PWM1 TIM_OCPolarity_Low 負脈沖模式 TIM_OCMode_PWM1 TIM_OCPolarity_High 正脈沖模式 TIM1_OCPolarity輸出極性---TIM_OCPolarity_High，輸出比較極性高,輸出的是正脈沖 TIM1_OCPolarity輸出極性---TIM_OCPolarity_Low， 輸出比較極性低,輸出的是負脈沖 */ TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; // 互補輸出極性 // 選擇空閑狀態下的非工作狀態 // 當MOE=0設置TIM1輸出比較空閑狀態 // 默認輸出位低電平 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset; // 選擇空閑狀態下的非工作狀態 // 當MOE=0重置TIM1輸出比較N空閑狀態 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset; TIM_OC3Init( TIM1, &TIM_OCInitStructure ); TIM_OC3PreloadConfig( TIM1, TIM_OCPreload_Enable ); // 使能TIMx在CCR1上的預裝載寄存器 /* TIM1 Update DMA Request enable */ TIM_DMACmd( TIM1, TIM_DMA_Update, ENABLE ); //TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE); // 定時中斷使能 //TIM_ITConfig(TIM1,TIM_IT_CC3,ENABLE); // 定時中斷使能 TIM_Cmd( TIM1, ENABLE ); // 定時器開始運行 // 這條語句必須要有!!! TIM_CtrlPWMOutputs( TIM1, ENABLE ); /* Main Output Enable */ } //****************************************************************************** // 基本定時程序,周期為 TIME_TB //****************************************************************************** static func_tb( void ) { static INT16U tmr_100ms; static INT16U tmr_1000ms; if ( !f_tb ) return; f_tb = 0; if ( ++tmr_100ms >= ( 100 / TIME_TB ) ) { tmr_100ms = 0; f_100ms = 1; GPIOC->ODR ^= GPIO_Pin_4; // led5 toogle } if ( ++tmr_1000ms >= ( 1000 / TIME_TB ) ) { tmr_1000ms = 0; f_1000ms = 1; GPIOC->ODR ^= GPIO_Pin_5; // led4 toogle } } //****************************************************************************** // 進入睡眠模式 // 自行編寫 //****************************************************************************** void myPWR_EnterSleepMode( void ) { //PWR->CR |= CR_CWUF_Set; /* Clear Wake-up flag */ /* Set SLEEPDEEP bit of Cortex System Control Register */ //*(__IO uint32_t *) SCB_SysCtrl |= SysCtrl_SLEEPDEEP_Set; /* This option is used to ensure that store operations are completed */ __WFI( ); /* Request Wait For Interrupt */ } //****************************************************************************** // 主程序 //****************************************************************************** void main( void ) { int i; RCC_Configuration( ); GPIO_Configuration( ); delayms( 100 ); // 延時，等待電壓穩定 Tim1_Configuration( ); DMA_Configuration( ); SysTick_Config1( ); NVIC_Configuration( ); //------------------------------------------------------------------------------ for ( i = 0; i < 6; ++i ) { //i=0; //GPIOA->ODR ^= GPIO_Pin_10; // led3 toogle //GPIOA->ODR ^= GPIO_Pin_11; // led3 toogle delayms( 1 ); led_toggle( ); } //------------------------------------------------------------------------------ for ( ;; ) { //if (set_sw&0x01) //myPWR_EnterSleepMode(); // 休眠，降低功耗 func_tb( ); } } //****************************************************************************** #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval : None */ void assert_failed(uint8_t* file, uint32_t line) { /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* Infinite loop */ while (1) { } } #endif
/** ****************************************************************************** * @file Project/Template/stm32f10x_it.c * @author MCD Application Team * @version V3.0.0 * @date 04/06/2009 * @brief Main Interrupt Service Routines. * This file provides template for all exceptions handler and * peripherals interrupt service routine. ****************************************************************************** * @copy * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * * <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2> */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_it.h" #include "stm32_m.h" int tt; extern bit f_tb; // 基本定時標志 //****************************************************************************** /******************************************************************************/ /* Cortex-M3 Processor Exceptions Handlers */ /******************************************************************************/ /** * @brief This function handles NMI exception. * @param None * @retval : None */ void NMI_Handler( void ) { } /** * @brief This function handles Hard Fault exception. * @param None * @retval : None */ void HardFault_Handler( void ) { /* Go to infinite loop when Hard Fault exception occurs */ while ( 1 ) { } } /** * @brief This function handles Memory Manage exception. * @param None * @retval : None */ void MemManage_Handler( void ) { /* Go to infinite loop when Memory Manage exception occurs */ while ( 1 ) { } } /** * @brief This function handles Bus Fault exception. * @param None * @retval : None */ void BusFault_Handler( void ) { /* Go to infinite loop when Bus Fault exception occurs */ while ( 1 ) { } } /** * @brief This function handles Usage Fault exception. * @param None * @retval : None */ void UsageFault_Handler( void ) { /* Go to infinite loop when Usage Fault exception occurs */ while ( 1 ) { } } /** * @brief This function handles SVCall exception. * @param None * @retval : None */ void SVC_Handler( void ) { } /** * @brief This function handles Debug Monitor exception. * @param None * @retval : None */ void DebugMon_Handler( void ) { } /** * @brief This function handles PendSVC exception. * @param None * @retval : None */ void PendSV_Handler( void ) { } /** * @brief This function handles SysTick Handler. * @param None * @retval : None */ void SysTick_Handler( void ) { f_tb = 1; } /******************************************************************************/ /* STM32F10x Peripherals Interrupt Handlers */ /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */ /* available peripheral interrupt handler's name please refer to the startup */ /* file (startup_stm32f10x_xx.s). */ /******************************************************************************/ void TIM1_UP_IRQHandler( void ) // 實際測量，周期為50US { tt = 1; TIM_ClearITPendingBit( TIM1, TIM_IT_Update ); }
/******************************************************************************/ void TIM1_CC_IRQHandler( void ) { tt = 2; TIM_ClearITPendingBit( TIM1, TIM_IT_CC3 ); }
/******************************************************************************/ void DMA1_Channel5_IRQHandler( void ) { tt = 3; DMA_ClearITPendingBit( DMA1_IT_TC5 ); GPIOA->ODR ^= GPIO_Pin_11; // for test! } //****************************************************************************** /******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/ //******************************************************************************