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今晚板子疯掉了，程序可能要晚点了~还有老师复制上来之后，头文件都有缺失，#include 这个居然消失了。

简单的作业二：TIM中断

/** ****************************************************************************** * @file EXTI/EXTI_Config/main.c * @author MCD Application Team * @version V3.5.0 * @date 08-April-2011 * @brief Main program body ****************************************************************************** * @attention * * 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. * * ?COPYRIGHT 2011 STMicroelectronics ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x.h" #include "stm32_eval.h" #include /** @addtogroup STM32F10x_StdPeriph_Examples * @{ */ /** @addtogroup EXTI_Config * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ EXTI_InitTypeDef EXTI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; long flag1=0; long flag2=0; long flag3=0; void RCC_Configuration(void) {/* RCC_DeInit(); RCC_HSICmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); RCC_HSEConfig(RCC_HSE_OFF); RCC_LSEConfig(RCC_LSE_OFF); RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz RCC_PLLCmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); RCC_ADCCLKConfig(RCC_PCLK2_Div4); RCC_PCLK2Config(RCC_HCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div2); RCC_HCLKConfig(RCC_SYSCLK_Div1); RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); while(RCC_GetSYSCLKSource() != 0x08); */ SystemInit(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_ResetBits(GPIOD,GPIO_Pin_2); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG 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_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); //点亮LED RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //TIM2.3.7 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE); } void USART_int(long BaudRate) //串行口通讯速率 { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE); //配置时钟 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* PA10 USART1_Rx */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); /* USARTx configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control disabled (RTS and CTS signals) - Receive and transmit enabled */ USART_InitStructure.USART_BaudRate = BaudRate;//串口波特率 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//数据位宽 USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位宽 USART_InitStructure.USART_Parity = USART_Parity_No;//校检位宽 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//工作模式 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//设置工作模式 USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; 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_Init(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1, ENABLE); } void NVIC_Configuration(void) { /* Enable the TIM2 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//先占优先级0 1s NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;//副优先级0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the TIM3 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;//先占优先级0 0.5s NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //副优先级0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the TIM7 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM7_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;//先占优先级0 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;//副优先级0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } /* Time base configuration */ void TIM2_Configuration(void)//1s { TIM_TimeBaseStructure.TIM_Period =35999 ;//计数值，即自动加载值ARR TIM_TimeBaseStructure.TIM_Prescaler =1999 ; //(35999+1)*(1999+1)/72MHz=1s TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数 TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); //开启定时器2 TIM_Cmd(TIM2, ENABLE); } void TIM3_Configuration(void)//0.5s { TIM_TimeBaseStructure.TIM_Period = 17999;//0.5s TIM_TimeBaseStructure.TIM_Prescaler = 1999; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE); TIM_Cmd(TIM3, ENABLE);// } void TIM7_Configuration(void)//1.8s { TIM_TimeBaseStructure.TIM_Period = 64799; TIM_TimeBaseStructure.TIM_Prescaler =1999; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM7, &TIM_TimeBaseStructure); TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE); TIM_Cmd(TIM7, ENABLE);// } int main(void) { /* System Clocks Configuration */ RCC_Configuration(); NVIC_Configuration(); USART_int(115200); TIM2_Configuration(); TIM3_Configuration(); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); printf(" Config done...\r\n"); while (1) { if(flag1 == 0) { printf("TIM2 interrupt......\r\n"); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2); } if(flag2 == 0) { printf("TIM3 interrupt......\r\n"); GPIO_SetBits(GPIOC,GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5); } } if(flag3 == 0) { printf("TIM7 interrupt......\r\n"); GPIO_SetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7); } } void TIM2_IRQHandler(void) //TIM2 { if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) { TIM_ClearITPendingBit(TIM2, TIM_IT_Update ); GPIO_ResetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2); } } void TIM3_IRQHandler(void) //TIM3 { if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) { TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); GPIO_ResetBits(GPIOC,GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5); } } void TIM7_IRQHandler(void) //TIM7 { if (TIM_GetITStatus(TIM7, TIM_IT_Update) != RESET) { TIM_ClearITPendingBit(TIM7, TIM_IT_Update ); GPIO_ResetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7); } } #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 /** * @} */ /** * @} */ #ifdef __GNUC__ /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf set to 'Yes') calls __io_putchar() */ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif /* __GNUC__ */ /** * @brief Retargets the C library printf function to the USART. * @param None * @retval None */ PUTCHAR_PROTOTYPE { /* Place your implementation of fputc here */ /* e.g. write a character to the USART */ USART_SendData(EVAL_COM1, (uint8_t) ch); /* Loop until the end of transmission */ while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET) {} return ch; } #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 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

PWM--呼吸灯RGB。青+橙→蓝色→蓝+桃红→白→橙→青→蓝→灭

/** ****************************************************************************** * @file EXTI/EXTI_Config/main.c * @author MCD Application Team * @version V3.5.0 * @date 08-April-2011 * @brief Main program body ****************************************************************************** * @attention * * 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. * * © COPYRIGHT 2011 STMicroelectronics ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x.h" #include "stm32_eval.h" //#include "delay.h" #include #define VREF 3.3 /** @addtogroup STM32F10x_StdPeriph_Examples * @{ */ /** @addtogroup EXTI_Config * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStructure; void RCC_Configuration(void)//RCC的配置函数 {/* RCC_DeInit(); RCC_HSICmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); RCC_HSEConfig(RCC_HSE_OFF); RCC_LSEConfig(RCC_LSE_OFF); RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz RCC_PLLCmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); RCC_ADCCLKConfig(RCC_PCLK2_Div4); RCC_PCLK2Config(RCC_HCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div2); RCC_HCLKConfig(RCC_SYSCLK_Div1); RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); while(RCC_GetSYSCLKSource() != 0x08); */ SystemInit(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_ResetBits(GPIOD,GPIO_Pin_2); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG 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_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); } void USART_int(long BaudRate) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* PA10 USART1_Rx */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); /* USARTx configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control disabled (RTS and CTS signals) - Receive and transmit enabled */ USART_InitStructure.USART_BaudRate = BaudRate; 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; USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; 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_Init(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1, ENABLE); } void delay_us(u32 n) { u8 j; while(n--) for(j=0;j<10;j++); } void delay_ms(u32 n) { while(n--) delay_us(1000); } void PWM_Config() {uint16_t PrescalerValue = 0; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure;//开启时钟 /* TIM2 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能TIM2时钟 /* GPIOA enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO , ENABLE);//使能AFIO时钟 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;//RGB GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); TIM_Cmd(TIM2, ENABLE); /* Compute the prescaler value */ PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1; /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = 0x07FF;//周期 TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;//分频 TIM_TimeBaseStructure.TIM_ClockDivision = 0;//时钟分割 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数 TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//PWM1 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//输出极性为高电平 /* PWM1 Mode configuration: Channel2 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//PWM功能使能 TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//占空比 TIM_OC2Init(TIM2, &TIM_OCInitStructure);//选择通道2，使能预装载寄存器 /* PWM1 Mode configuration: Channel3 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF; TIM_OC3Init(TIM2, &TIM_OCInitStructure);//使能预装载寄存器 /* PWM1 Mode configuration: Channel4 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF; TIM_OC4Init(TIM2, &TIM_OCInitStructure);//使能预装载寄存器 TIM_ARRPreloadConfig(TIM2, ENABLE);//允许自动重装载寄存器 } void PWM_TEST() { u8 led_fx=1; unsigned int temp0=0,temp1=1000,temp2=2000,temp3=3000,temp4=3500,temp5=4000; printf("PWM-RGB TEST......\r\n"); while(1) { for(led_fx=1;led_fx<9;led_fx++) { delay_ms(10); if(led_fx==1) { temp0++; } else { temp0--; } if(temp0<2047) led_fx=0; if(temp0>=2047) led_fx=1; TIM_SetCompare2(TIM2,temp0); if(led_fx==2) { temp1++; } else { temp1--; } if(temp1<2047) led_fx=0; if(temp1>=2047) led_fx=1; TIM_SetCompare3(TIM2,temp1); if(led_fx==3) { temp2++; } else { temp2--; } if(temp2<2047) led_fx=0; if(temp2>=2047) led_fx=1; TIM_SetCompare4(TIM2,temp2); if(led_fx==4) { temp3++; } else { temp3--; } if(temp3<2047) led_fx=0; if(temp3>=2047) led_fx=1; TIM_SetCompare2(TIM2,temp3); if(led_fx==5) { temp4++; } else { temp4--; } if(temp4<2047) led_fx=0; if(temp4>=2047) led_fx=1; TIM_SetCompare3(TIM2,temp4); if(led_fx==6) { temp5++; } else { temp5--; } if(temp5<2047) led_fx=0; if(temp5>=2047) led_fx=1; TIM_SetCompare4(TIM2,temp5); } } } /* Private functions ---------------------------------------------------------*/ /** * @brief Main program. * @param None * @retval None */ int main(void) { /*!< 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(); USART_int(115200); printf(" config done...\r\n"); PWM_Config(); delay_ms(1000); while(1) { PWM_TEST(); } } #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 /** * @} */ /** * @} */ #ifdef __GNUC__ /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf set to 'Yes') calls __io_putchar() */ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif /* __GNUC__ */ /** * @brief Retargets the C library printf function to the USART. * @param None * @retval None */ PUTCHAR_PROTOTYPE { /* Place your implementation of fputc here */ /* e.g. write a character to the USART */ USART_SendData(EVAL_COM1, (uint8_t) ch); /* Loop until the end of transmission */ while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET) {} return ch; } #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 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

月黑风高夜呀楼主

好像你视频里桃红，橙色，青色不太明显呢

最后的绿色真是渗人

为什么开头有暗暗的红色呢？

ADC:

/* Includes ------------------------------------------------------------------*/ #include "stm32f10x.h" #include "stm32_eval.h" #include  #define VREF 3.3 /** @addtogroup STM32F10x_StdPeriph_Examples * @{ */ /** @addtogroup EXTI_Config * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStructure; void RCC_Configuration(void) {/* RCC_DeInit(); RCC_HSICmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); RCC_HSEConfig(RCC_HSE_OFF); RCC_LSEConfig(RCC_LSE_OFF); RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz RCC_PLLCmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); RCC_ADCCLKConfig(RCC_PCLK2_Div4); RCC_PCLK2Config(RCC_HCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div2); RCC_HCLKConfig(RCC_SYSCLK_Div1); RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); while(RCC_GetSYSCLKSource() != 0x08); */ SystemInit(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_ResetBits(GPIOD,GPIO_Pin_2); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG 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_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); } void USART_int(long BaudRate) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* PA10 USART1_Rx */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); /* USARTx configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control disabled (RTS and CTS signals) - Receive and transmit enabled */ USART_InitStructure.USART_BaudRate = BaudRate;//?????? USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1 USART_InitStructure.USART_Parity = USART_Parity_No;//???? USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//?????????? USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; 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_Init(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1, ENABLE); } void delay_us(u32 n) { u8 j; while(n--) for(j=0;j<10;j++); } void delay_ms(u32 n) { while(n--) delay_us(1000); } void PWM_Config() {uint16_t PrescalerValue = 0; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; /* TIM2 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /* GPIOA enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO , ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); TIM_Cmd(TIM2, ENABLE); /* Compute the prescaler value */ PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1; /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = 0x07FF; TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /* PWM1 Mode configuration: Channel2 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF; TIM_OC2Init(TIM2, &TIM_OCInitStructure); /* PWM1 Mode configuration: Channel3 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF; TIM_OC3Init(TIM2, &TIM_OCInitStructure); /* PWM1 Mode configuration: Channel4 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF; TIM_OC4Init(TIM2, &TIM_OCInitStructure); TIM_ARRPreloadConfig(TIM2, ENABLE); } void ADC_CONFIG(){ ADC_InitTypeDef ADC_InitStructure; #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); //72M/6=12,最大时间不能超过14 #endif ADC_DeInit(ADC1); /* Enable ADC1 and GPIOC clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);//使能ADC1通道时钟，各个管教时钟 /* Configure PB0 (ADC Channel14) as analog input -------------------------*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOB, &GPIO_InitStructure); /* ADC1 configuration ------------------------------------------------------*/ ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;//独立工作模式 ADC_InitStructure.ADC_ScanConvMode = ENABLE;//扫描方式 ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//连续转换开启 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//外部触发禁止 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//右对齐方式 ADC_InitStructure.ADC_NbrOfChannel = 1;//设置转换序列长度为1 ADC_Init(ADC1, &ADC_InitStructure);//调用函数，初始化ADC1 /* Enable ADC1 DMA */ ADC_DMACmd(ADC1, ENABLE);//开启ADC的DMA支持 /* Enable ADC1 */ ADC_Cmd(ADC1, ENABLE); } int Get_ADC()//ADC自动效准 { /* ADC1 regular channel configuration */ //设置制定ADC的规则组通道，设置它们的转化顺序和采样时间 ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5); /* Enable ADC1 reset calibration register */ ADC_ResetCalibration(ADC1);//复位指定的ADC1的校准寄存器 /* Check the end of ADC1 reset calibration register */ while(ADC_GetResetCalibrationStatus(ADC1));//获取ADC1复位校准寄存器的状态，设置状态则等待 /* Start ADC1 calibration */ ADC_StartCalibration(ADC1);//开始指定ADC1的校准状态 /* Check the end of ADC1 calibration */ while(ADC_GetCalibrationStatus(ADC1));//获取指定ADC1的校准程序，设置状态则等待 /* Start ADC1 Software Conversion */ ADC_SoftwareStartConvCmd(ADC1, ENABLE);//ADC1转换启动 return ADC_GetConversionValue(ADC1);//返回最近一次ADC1规则组的转换结果 } void PWM_TEST() { float Volt=0.00; unsigned int temp0,temp1,temp2,ADValue = 0; while(1) { ADValue = Get_ADC(); Volt = VREF*ADValue/4095; printf("===============================\r\n"); printf("The ADC value is:%d\r\n",ADValue); printf("The Volt is:%f V\r\n",Volt); TIM_SetCompare2(TIM2, temp0); TIM_SetCompare3(TIM2, temp1); TIM_SetCompare4(TIM2, temp2); if(ADValue>3000) { temp0=ADValue/2-1300;temp1=ADValue/2-600;temp2=ADValue/2-150; }if(2000Libraries->Small printf set to 'Yes') calls __io_putchar() */ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif /* __GNUC__ */ /** * @brief Retargets the C library printf function to the USART. * @param None * @retval None */ PUTCHAR_PROTOTYPE { /* Place your implementation of fputc here */ /* e.g. write a character to the USART */ USART_SendData(EVAL_COM1, (uint8_t) ch); /* Loop until the end of transmission */ while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET) {} return ch; } #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

IIC：偶数上电计数

#include "stm32f10x.h" #include "stm32_eval.h" #include "STM32_I2C.h" #include  GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; unsigned char i=0; void EXTIkeyS1_Config(void); /*delay_us*/ void delay_us(u32 n) { u8 j; while(n--) for(j=0;j<10;j++); } /*delay_ms*/ void delay_ms(u32 n) { while(n--) delay_us(1000); } void RCC_Configuration(void) { RCC_DeInit(); RCC_HSICmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); RCC_HSEConfig(RCC_HSE_OFF); RCC_LSEConfig(RCC_LSE_OFF); RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); // 72HMz RCC_PLLCmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); RCC_ADCCLKConfig(RCC_PCLK2_Div4); RCC_PCLK2Config(RCC_HCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div2); RCC_HCLKConfig(RCC_SYSCLK_Div1); RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); while(RCC_GetSYSCLKSource() != 0x08) //SystemInit(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_ResetBits(GPIOD,GPIO_Pin_2); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG 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_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); } void USART_int(long BaudRate) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* PA10 USART1_Rx */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); /* USARTx configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control disabled (RTS and CTS signals) - Receive and transmit enabled */ USART_InitStructure.USART_BaudRate = BaudRate;//?????? USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1 USART_InitStructure.USART_Parity = USART_Parity_No;//???? USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//?????????? USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; 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_Init(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1, ENABLE); /* Configure four bit for preemption priority */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4); /* Enable the USART1 Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; // NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void Iic1_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; I2C_InitTypeDef I2C_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE); //PB6-I2C2_SCL PB7-I2C2_SDA PB10-I2C2_SCL PB11-I2C2_SDA /* Configure IO connected to IIC*********************/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; GPIO_Init(GPIOB, &GPIO_InitStructure); I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;//Tlov/Thigh=2 I2C_InitStructure.I2C_OwnAddress1 = 0xA0;//作为从机时的地址 I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;//使能I2C的应答 I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;//应答7位的地址 I2C_InitStructure.I2C_ClockSpeed = 400000;//I2C速率为400KHz（快速模式） I2C_Cmd(I2C2, ENABLE); I2C_Init(I2C2, &I2C_InitStructure); I2C_AcknowledgeConfig(I2C2, ENABLE); } void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte) { while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));//等待I2C I2C_GenerateSTART(I2C2,ENABLE);//产生起始信号 while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));//确定主机模式是否成功（检测EV5）EV5 I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);//发送器件地址（写） while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));//检测主机传输模式是否成功（检测EV6）EV6 I2C_SendData(I2C2, write_address);//通过外设I2C发送地址 while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));//检测主机发送的字节是否成功（检测EV8）EV8 I2C_SendData(I2C2, byte);//通过外设T2C发送数据 while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));//检测主机发送的字节是否成功（检测EV8） I2C_GenerateSTOP(I2C2, ENABLE);//产生I2C2传输STOP条件 do { /* Send START condition */ I2C_GenerateSTART(I2C2, ENABLE); //产生I2C2传输的START条件 /* Read I2C2 SR1 register */ /* Send EEPROM address for write */ I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter); }while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002)); //地址发送结束 /* Clear AF flag */ I2C_ClearFlag(I2C2, I2C_FLAG_AF);//清除I2Cx的应答错误标志位 /* STOP condition */ I2C_GenerateSTOP(I2C2, ENABLE);//产生I2C2传输START条件 } unsigned char I2C2_ReadByte(unsigned char id, unsigned char read_address) { unsigned char temp; while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY))//等待I2C空闲 {} I2C_GenerateSTART(I2C2, ENABLE);//写模式 while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)); I2C_Send7bitAddress(I2C2, id, I2C_Direction_Transmitter); while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); I2C_Cmd(I2C2, ENABLE); I2C_SendData(I2C2, read_address); while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_GenerateSTART(I2C2, ENABLE); while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)); I2C_Send7bitAddress(I2C2, id, I2C_Direction_Receiver);//读模式 while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));//等待读取事件，在读取数据 I2C_AcknowledgeConfig(I2C2, DISABLE); //关闭应答和停止条件产生 I2C_GenerateSTOP(I2C2, ENABLE); while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED))); temp = I2C_ReceiveData(I2C2); I2C_AcknowledgeConfig(I2C2, ENABLE); return temp; } void EXTIkeyS1_Config(void)//S1 { /* Enable GPIOA clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); /* Configure PA.00 pin as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;//S1 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOC, &GPIO_InitStructure); /* Enable AFIO clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8); EXTI_InitStructure.EXTI_Line = EXTI_Line8; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void EXTI9_5_IRQHandler(void) { if(EXTI_GetITStatus(EXTI_Line8) != RESET) { i=0; I2C2_WriteByte(0xA0,0,0); printf(" 按键清%d\r\n",i); /* Clear the EXTI line 8 pending bit */ EXTI_ClearITPendingBit(EXTI_Line8); } } int main(void) { RCC_Configuration(); EXTIkeyS1_Config(); USART_int(115200); Iic1_Init(); printf(" config done...\r\n"); i = I2C2_ReadByte(0xA0,0);// printf("write data to address:%d\r\n",i); i++; I2C2_WriteByte(0xA0,0,i);// printf("Reading data from address:%d\r\n",i); while(1) { delay_ms(2000); printf(" 上电计数:%d\r\n",i); } } #ifdef USE_FULL_ASSERT void assert_failed(uint8_t* file, uint32_t line) { while (1) { } } #endif #ifdef __GNUC__ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif /* __GNUC__ */ PUTCHAR_PROTOTYPE { USART_SendData(EVAL_COM1, (uint8_t) ch); while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET) {} return ch; } #ifdef USE_FULL_ASSERT void assert_failed(uint8_t* file, uint32_t line) { while (1) { } } #endif