自学教程：C++ I2C_DeInit函数代码示例

/**  * @brief  Codec_TIMEOUT_UserCallback  * @param  None  * @retval None  */uint32_t Codec_TIMEOUT_UserCallback(void){#if 0  I2C_InitTypeDef I2C_InitStructure;    LCD_ErrLog("> I2C Timeout error (CS43L22)/n");  I2C_GenerateSTOP(I2C1, ENABLE);  I2C_SoftwareResetCmd(I2C1, ENABLE);  I2C_SoftwareResetCmd(I2C1, DISABLE);      I2C_DeInit(I2C1);    /* CODEC_I2C peripheral configuration */  I2C_DeInit(I2C1);  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;  I2C_InitStructure.I2C_OwnAddress1 = 0x33;  I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;  I2C_InitStructure.I2C_ClockSpeed = I2C_SPEED;  /* Enable the I2C peripheral */  I2C_Cmd(I2C1, ENABLE);    I2C_Init(I2C1, &I2C_InitStructure);    LCD_UsrLog("> I2C error recovered./n");#endif  return 0;}

void cpu_deinit_all() {//**    ADC_DeInit(LPC_ADC);    CAN_DeInit(LPC_CAN1);    CAN_DeInit(LPC_CAN2);    EMAC_DeInit();    EXTI_DeInit();    I2C_DeInit(LPC_I2C0);    I2C_DeInit(LPC_I2C1);    I2C_DeInit(LPC_I2C2);    I2S_DeInit(LPC_I2S);    NVIC_DeInit();    NVIC_SCBDeInit();    PWM_DeInit(LPC_PWM1);    QEI_DeInit(LPC_QEI);//**    RIT_DeInit(LPC_RIT);    RTC_DeInit(LPC_RTC);    SPI_DeInit(LPC_SPI);    SSP_DeInit(LPC_SSP0);    SSP_DeInit(LPC_SSP1);    UART_DeInit(LPC_UART0);    UART_DeInit((LPC_UART_TypeDef *) LPC_UART1);//**    UART_DeInit(LPC_UART2);//**    UART_DeInit(LPC_UART3);    TIM_DeInit(LPC_TIM0);    TIM_DeInit(LPC_TIM1);//**    TIM_DeInit(LPC_TIM2);//**    TIM_DeInit(LPC_TIM3);}

void Init_I2C(void){  I2C_InitTypeDef  I2C_InitStructure;  GPIO_InitTypeDef GPIO_InitStructure;  /* Enable I2C and GPIO clocks */  RCC_APB1PeriphClockCmd(I2C_RCC_Periph, ENABLE);  RCC_AHB1PeriphClockCmd(I2C_RCC_Port, ENABLE);  /* Configure I2C pins: SCL and SDA */  GPIO_InitStructure.GPIO_Pin =  I2C_SCL_Pin | I2C_SDA_Pin;   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;  GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF;  GPIO_InitStructure.GPIO_OType=GPIO_OType_OD;  GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_NOPULL;  GPIO_Init(I2C_Port, &GPIO_InitStructure);         GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_I2C1);  GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_I2C1);  I2C_DeInit(I2C1);  /* I2C configuration */  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;  I2C_InitStructure.I2C_OwnAddress1 = 0x68<<1;   I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;  I2C_InitStructure.I2C_ClockSpeed = I2C_Speed;  /* Apply I2C configuration after enabling it */  I2C_Init(I2C1, &I2C_InitStructure);  /* I2C Peripheral Enable */    I2C_Cmd(I2C1, ENABLE);}

/*************************************************名称：iic_init(void)功能：iic外设2初始化（管脚配置 总线速度 数据位宽）输入参数：无输出参数：无返回值：  无**************************************************/void iic_init(void){  I2C_InitTypeDef  I2C_InitStructure;  GPIO_InitTypeDef  GPIO_InitStructure;   RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE);  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);      /* PB6,7 SCL and SDA */   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7;  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;  GPIO_Init(GPIOB, &GPIO_InitStructure);	  I2C_DeInit(I2C1);  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;  I2C_InitStructure.I2C_OwnAddress1 = 0x30;  I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;  I2C_InitStructure.I2C_ClockSpeed = 300000;  //200K  I2C_Cmd(I2C1, ENABLE);  I2C_Init(I2C1, &I2C_InitStructure);  /*允许1字节1应答模式*/  I2C_AcknowledgeConfig(I2C1, ENABLE);}

void I2CHW_Reset(void){  __IO uint32_t Timeout;  //uint8_t i;  GPIO_InitTypeDef GPIO_InitStructure;     GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_9 | GPIO_Pin_8;  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  GPIO_Init(GPIOB, &GPIO_InitStructure);      I2C_DeInit(I2C1);  RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, ENABLE);  RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, DISABLE);    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, DISABLE);   //  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_9 | GPIO_Pin_8;  //  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  //  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  //  GPIO_Init(GPIOB, &GPIO_InitStructure);  //    //  GPIO_SetBits(GPIOB,GPIO_Pin_9);  //  GPIO_SetBits(GPIOB,GPIO_Pin_8);  //  Timeout=0x1ff;  //  while(Timeout--);    I2C_Configuration();  Timeout=0x1ff;  while(Timeout--);  }    

void i2cSetup(uint32_t speed) {	I2C_InitTypeDef i2cConfig;	// GPIO Init	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);	GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_I2C1);	GPIO_PinAFConfig(GPIOB, GPIO_PinSource9, GPIO_AF_I2C1);	GPIO_Init(GPIOB, &(GPIO_InitTypeDef){GPIO_Pin_6, GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_OD, GPIO_PuPd_NOPULL});	GPIO_Init(GPIOB, &(GPIO_InitTypeDef){GPIO_Pin_9, GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_OD, GPIO_PuPd_NOPULL});	RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);	// I2C init	I2C_StructInit(&i2cConfig);	// TODO - Figure out why the speed isn't being set porperly	i2cConfig.I2C_ClockSpeed = speed;	i2cConfig.I2C_DutyCycle = I2C_DutyCycle_16_9;	I2C_DeInit(I2C1);	I2C_Init(I2C1, &i2cConfig);	I2C_ITConfig(I2C1, I2C_IT_ERR, ENABLE);	NVIC_EnableIRQ(I2C1_ER_IRQn);	I2C_Cmd(I2C1, ENABLE);}

void init_i2c(void) {	I2C_InitTypeDef I2C_InitStruct;	GPIO_InitTypeDef GPIO_InitStruct;	RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE); 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11; // SCL,SDA	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_OD;	GPIO_Init(GPIOB, &GPIO_InitStruct);	I2C_SoftwareResetCmd(I2C2, ENABLE);	I2C_ITConfig(I2C2,I2C_IT_ERR,ENABLE);	I2C_StructInit(&I2C_InitStruct);	I2C_DeInit(I2C2);	I2C_InitStruct.I2C_ClockSpeed = 100000;	I2C_InitStruct.I2C_Ack = I2C_Ack_Enable;	I2C_InitStruct.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;	I2C_InitStruct.I2C_Mode = I2C_Mode_I2C;	I2C_InitStruct.I2C_DutyCycle = I2C_DutyCycle_2;	I2C_InitStruct.I2C_OwnAddress1 = 0x00;	I2C_Init(I2C2, &I2C_InitStruct);	I2C_Cmd(I2C2, ENABLE);}

/**  * @brief  DeInitializes the LM75_I2C.  * @param  None  * @retval None  */void LM75_LowLevel_DeInit(void){  GPIO_InitTypeDef  GPIO_InitStructure;  /*!< Disable LM75_I2C */  I2C_Cmd(LM75_I2C, DISABLE);  /*!< DeInitializes the LM75_I2C */  I2C_DeInit(LM75_I2C);    /*!< LM75_I2C Periph clock disable */  RCC_APB1PeriphClockCmd(LM75_I2C_CLK, DISABLE);      /*!< Configure LM75_I2C pins: SCL */  GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);  /*!< Configure LM75_I2C pins: SDA */  GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN;  GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);  /*!< Configure LM75_I2C pin: SMBUS ALERT */  GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN;  GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure);}

/**  * @brief  DeInitializes the TS751_I2C.  * @param  None  * @retval None  */void TS751_LowLevel_DeInit(void){  GPIO_InitTypeDef  GPIO_InitStructure;  /* Disable TS751_I2C */  I2C_Cmd(TS751_I2C, DISABLE);    /* DeInitializes the TS751_I2C */  I2C_DeInit(TS751_I2C);    /* TS751_I2C Periph clock disable */  RCC_APB1PeriphClockCmd(TS751_I2C_CLK, DISABLE);      /* Configure TS751_I2C pins: SCL */  GPIO_InitStructure.GPIO_Pin = TS751_I2C_SCL_PIN;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;  GPIO_Init(TS751_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);  /* Configure TS751_I2C pins: SDA */  GPIO_InitStructure.GPIO_Pin = TS751_I2C_SDA_PIN;  GPIO_Init(TS751_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);  /* Configure TS751_I2C pin: SMBUS ALERT */  GPIO_InitStructure.GPIO_Pin = TS751_I2C_SMBUSALERT_PIN;  GPIO_Init(TS751_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure);}

/******************************************************************************** Function Name  : Mems_Init* Description    : It inits mems * Input          : None* Output         : status* Return         : None*******************************************************************************/int8u Mems_Init(void){    int8u ret = 0;    // GPIO assignments  // PA1: SC2SDA (Serial Data)  // PA2: SC2SCL (Serial Clock)  //-----SC2 I2C Master GPIO configuration  TIM2_CCER &= 0xFFFFEEEE;  SC2_MODE =  SC2_MODE_I2C;  GPIO_PACFGL &= 0xFFFFF00F;  GPIO_PACFGL |= 0x00000DD0;    SC2_RATELIN =  14;   // generates standard 100kbps or 400kbps  SC2_RATEEXP =  1;    // 3 yields 100kbps; 1 yields 400kbps  SC2_TWICTRL1 =  0;   // start from a clean state  SC2_TWICTRL2 =  0;   // start from a clean state      ret = I2C_MEMS_Init();    fullscale_state = MEMS_LOW_RANGE;//Add later if really needed  #ifdef ST_DBG    if (!ret)   I2C_DeInit(MEMS_I2C);#endif    return ret;}/* end Mems_Init */

void I2cInit( void ){    I2C_DeInit( I2C_INTERFACE );    I2cGpioConfig( );    I2cConfig( );}

void vhI2C_initI2C1(void){	I2C_InitTypeDef I2C_InitStruct;	/* 		I2C1	 * setup SCL and SDA pins	 * SCL = PB8	 * SDA = PB9	 */	/* Deinit and reset the I2C to avoid it locking up */    I2C_DeInit(I2C1 );    I2C_SoftwareResetCmd(I2C1, ENABLE);    I2C_SoftwareResetCmd(I2C1, DISABLE);	I2C_InitStruct.I2C_ClockSpeed = I2C1_clockSpeed; 		// I2C1_clockSpeed [Hz]	I2C_InitStruct.I2C_Mode = I2C_Mode_I2C;					// I2C mode	I2C_InitStruct.I2C_DutyCycle = I2C_DutyCycle_2;			// 50% duty cycle --> standard	I2C_InitStruct.I2C_OwnAddress1 = I2C1_ownAddress;		// own address, not relevant in master mode	I2C_InitStruct.I2C_Ack = I2C_Ack_Disable;	I2C_InitStruct.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; // set address length to 7 bit addresses	I2C_Init(I2C1, &I2C_InitStruct);						// init I2C1	I2C_Cmd(I2C1, ENABLE);}

/******************************************************************************** Function Name  : I2C_Configuration* Description    : I2C Configuration* Input          : None* Output         : None* Return         : None*******************************************************************************/void I2C_Configuration(void){  I2C_InitTypeDef  I2C_InitStructure;   GPIO_InitTypeDef  GPIO_InitStructure;   /* Configure I2C1 pins: SCL and SDA */  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7;  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;  GPIO_Init(GPIOB, &GPIO_InitStructure);  /* I2C configuration */  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;  I2C_InitStructure.I2C_OwnAddress1 = I2C1_SLAVE_ADDRESS7;  I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;  I2C_InitStructure.I2C_ClockSpeed = I2C_Speed;    I2C_DeInit(I2C1);  /* I2C Peripheral Enable */  I2C_Cmd(I2C1, ENABLE);  /* Apply I2C configuration after enabling it */  I2C_Init(I2C1, &I2C_InitStructure);}

void i2c_frequency(i2c_t *obj, int hz) {    I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);    I2C_InitTypeDef I2C_InitStructure;    uint32_t tim = 0;    // Disable the Fast Mode Plus capability    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); // Enable SYSCFG clock    SYSCFG_I2CFastModePlusConfig(SYSCFG_I2CFastModePlus_I2C1, DISABLE);    SYSCFG_I2CFastModePlusConfig(SYSCFG_I2CFastModePlus_I2C2, DISABLE);    /*       Values calculated with I2C_Timing_Configuration_V1.0.1.xls file (see AN4235)       * Standard mode (up to 100 kHz)       * Fast Mode (up to 400 kHz)       * Fast Mode Plus (up to 1 MHz)       Below values obtained with:       - I2C clock source = 8 MHz (HSI clock per default)       - Analog filter delay = ON       - Digital filter coefficient = 0       - Rise time = 100 ns       - Fall time = 10ns    */    switch (hz) {        case 100000:            tim = 0x00201D2B; // Standard mode            break;        case 200000:            tim = 0x0010021E; // Fast Mode            break;        case 400000:            tim = 0x0010020A; // Fast Mode            break;        case 1000000:            tim = 0x00100001; // Fast Mode Plus            // Enable the Fast Mode Plus capability            if (obj->i2c == I2C_1) {                SYSCFG_I2CFastModePlusConfig(SYSCFG_I2CFastModePlus_I2C1, ENABLE);            }            if (obj->i2c == I2C_2) {                SYSCFG_I2CFastModePlusConfig(SYSCFG_I2CFastModePlus_I2C2, ENABLE);            }            break;        default:            error("Only 100kHz, 200kHz, 400kHz and 1MHz I2C frequencies are supported.");            break;    }    // I2C configuration    I2C_DeInit(i2c);    I2C_InitStructure.I2C_Mode                = I2C_Mode_I2C;    I2C_InitStructure.I2C_AnalogFilter        = I2C_AnalogFilter_Enable;    I2C_InitStructure.I2C_DigitalFilter       = 0x00;    I2C_InitStructure.I2C_OwnAddress1         = 0x00;    I2C_InitStructure.I2C_Ack                 = I2C_Ack_Enable;    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;    I2C_InitStructure.I2C_Timing              = tim;    I2C_Init(i2c, &I2C_InitStructure);    I2C_Cmd(i2c, ENABLE);}

//*----------------------------------------------------------------------------//* Function Name       : mchf_hw_i2c2_init//* Object              ://* Object              ://* Input Parameters    ://* Output Parameters   ://* Functions called    ://*----------------------------------------------------------------------------void mchf_hw_i2c2_init(void){	GPIO_InitTypeDef GPIO_InitStructure;	I2C_InitTypeDef I2C_InitStructure;	// CODEC_I2C SCL and SDA pins configuration	GPIO_InitStructure.GPIO_Pin   = I2C2_SCL_PIN|I2C2_SDA_PIN;	GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;	GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;	GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;		// we also have ext pullups	GPIO_Init(I2C2_SCL_GPIO, &GPIO_InitStructure);	// Connect pins to I2C peripheral	GPIO_PinAFConfig(I2C2_SCL_GPIO, I2C2_SCL_PINSRC, CODEC_I2C_GPIO_AF);	GPIO_PinAFConfig(I2C2_SDA_GPIO, I2C2_SDA_PINSRC, CODEC_I2C_GPIO_AF);	// Enable the CODEC_I2C peripheral clock	RCC_APB1PeriphClockCmd(I2C2_CLK, ENABLE);	// CODEC_I2C peripheral configuration	I2C_DeInit(CODEC_I2C);	I2C_InitStructure.I2C_Mode 					= I2C_Mode_I2C;	I2C_InitStructure.I2C_DutyCycle 			= I2C_DutyCycle_2;	I2C_InitStructure.I2C_OwnAddress1 			= 0x33;	I2C_InitStructure.I2C_Ack 					= I2C_Ack_Enable;	I2C_InitStructure.I2C_AcknowledgedAddress 	= I2C_AcknowledgedAddress_7bit;	I2C_InitStructure.I2C_ClockSpeed 			= I2C2_SPEED;	// Enable the I2C peripheral	I2C_Cmd (CODEC_I2C, ENABLE);	I2C_Init(CODEC_I2C, &I2C_InitStructure);}

/******************************************************************************** Function Name  : I2Cx_GPIO_Config* Description    : * Input          : None* Output         : None* Return         : None* Attention		 : None*******************************************************************************/void CODEC_I2C_Configuration(void){	I2C_InitTypeDef  I2C_InitStructure;	GPIO_InitTypeDef  GPIO_InitStructure;	/* If the I2C peripheral is already enabled, don't reconfigure it */		RCC_AHB1PeriphClockCmd(I2C_x_SDA_GPIO_CLK | I2C_x_SCL_GPIO_CLK,ENABLE);		RCC_APB1PeriphClockCmd(I2C_x_CLK,ENABLE);		GPIO_PinAFConfig(I2C_x_SDA_GPIO_PORT, I2C_x_SDA_SOURCE, I2C_x_SDA_AF);	GPIO_PinAFConfig(I2C_x_SCL_GPIO_PORT, I2C_x_SCL_SOURCE, I2C_x_SCL_AF);		GPIO_InitStructure.GPIO_Pin =  I2C_x_SDA_PIN | I2C_x_SCL_PIN;	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;	GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;	GPIO_Init(I2C_x_SDA_GPIO_PORT, &GPIO_InitStructure);		I2C_DeInit(I2C_x);	I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;	I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;	I2C_InitStructure.I2C_OwnAddress1 = I2Cx_SLAVE_ADDRESS7;	I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;	I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;	I2C_InitStructure.I2C_ClockSpeed = I2Cx_SPEED;		I2C_Init(I2C_x, &I2C_InitStructure);		//I2C_AcknowledgeConfig(I2C_x, ENABLE);	I2C_Cmd(I2C_x, ENABLE);	}

/*** @fn		void System_I2CConfig(void)* @brief*	@li		I2C 
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