i2c-interrupt-handler, stm32

Ich habe einige Probleme mit I2C2-interrupts, ich habe aktiviert die Unterbrechung, aber der handler interrupt nie ausgeführt wird.

Hier ist die i2c2 Initialisierung:

void i2c2InitSlave(void)
{
    I2C_DeInit(I2C2);
    GPIO_InitTypeDef GPIO_InitStructure;
    I2C_InitTypeDef I2C_InitStructure;

    /*I2C2 Peripheral clock enable */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);

    /* Enable GPIO clock */
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOH, ENABLE);

    //I2C2 SCL and SDA Pin configuration
    GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOH, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOH, GPIO_PinSource4, GPIO_AF_I2C2);
        GPIO_PinAFConfig(GPIOH, GPIO_PinSource5, GPIO_AF_I2C2);

    /* Initialize I2C peripheral */
    /* I2C Init */
    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = SLAVE_ADDRESS;
    I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
    I2C_InitStructure.I2C_ClockSpeed = 100000;
    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;

    /* Enable I2C2 */
    I2C_Cmd(I2C2, ENABLE);
    I2C_Init(I2C2, &I2C_InitStructure);

    Tx_Index = 0;
    Rx_Index = 0;
}

Hier ist die interrupt-Konfiguration:

NVIC_InitTypeDef NVIC_InitStructure;

/* Configure the I2C event priority */
NVIC_InitStructure.NVIC_IRQChannel                   = I2C2_EV_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority        = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
NVIC_Init(&NVIC_InitStructure);

Und hier ist der interrupt-handler:

/**
* @brief  Interrupt handler for i2c interface.
* @param  None
* @retval None
*/

void I2C2_EV_IRQHandler(void)
{
    switch(I2C_GetLastEvent(I2C2))
    {
    case I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED :
        break;
    case I2C_EVENT_SLAVE_BYTE_RECEIVED:
        i2c_read_packet[Rx_Index] = I2C_ReceiveData(I2C2); //Store the packet in i2c_read_packet.
        Rx_Index++;
        break;
    case I2C_EVENT_SLAVE_STOP_DETECTED :
        Rx_Index = 0;
        packets_recv_i2c++;
        i2cProcessPacket();
        break;
    case I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED:
        I2C_SendData(I2C2, i2c_packet_to_send[0]);
        Tx_Index++;
        break;
    case I2C_EVENT_SLAVE_BYTE_TRANSMITTED:
        I2C_SendData(I2C2, i2c_packet_to_send[Tx_Index]);
        Tx_Index++;
        break;
    case I2C_EVENT_SLAVE_ACK_FAILURE:
        Tx_Index = 0;
        packets_sent_i2c++;
        break;
    default:
        break;
    }
}

Irgendeine Idee?
BR,
Edgar.

InformationsquelleAutor edgar.epi | 2013-08-29

i2c stm32

Okay, so dass Sie aufgeführt habe, die interrupt config und Hundeführer, aber was ist mit deiner I2C-Initialisierung im Allgemeinen?

Werden Sie nicht erzeugen alle unterbricht, wenn der I2C ist nicht initialisiert.

Sollten Sie erkennen, dieser block (oder einem analog davon):

I2C_InitTypeDef  I2C_InitStructure;

/* I2C Struct Initialize */ 
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DUTYCYCLE;
I2C_InitStructure.I2C_OwnAddress1 = 0xA0;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_ClockSpeed = I2C_SPEED;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;

/* I2C Enable and Init */
I2C_Cmd(I2C2, ENABLE);
I2C_Init(I2Cx, &I2C_InitStructure);  

I2C_Config(); //See implementation below

I2C_ITConfig(I2Cx, ENABLE); //Part of the STM32 I2C driver

Wo I2C_Config könnte wie folgt definiert:

void I2C_Config(void){
  GPIO_InitTypeDef  GPIO_InitStructure;

  /* RCC Configuration */
  /*I2C Peripheral clock enable */
  RCC_APB1PeriphClockCmd(I2Cx_CLK, ENABLE);

  /*SDA GPIO clock enable */
  RCC_AHB1PeriphClockCmd(I2Cx_SDA_GPIO_CLK, ENABLE);

  /*SCL GPIO clock enable */
  RCC_AHB1PeriphClockCmd(I2Cx_SCL_GPIO_CLK, ENABLE);

  /* Reset I2Cx IP */
  RCC_APB1PeriphResetCmd(I2Cx_CLK, ENABLE);

  /* Release reset signal of I2Cx IP */
  RCC_APB1PeriphResetCmd(I2Cx_CLK, DISABLE);

  /* GPIO Configuration */
  /*Configure I2C SCL pin */
  GPIO_InitStructure.GPIO_Pin = I2Cx_SCL_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
  GPIO_Init(I2Cx_SCL_GPIO_PORT, &GPIO_InitStructure);

  /*Configure I2C SDA pin */
  GPIO_InitStructure.GPIO_Pin = I2Cx_SDA_PIN;
  GPIO_Init(I2Cx_SDA_GPIO_PORT, &GPIO_InitStructure);

  /* Connect PXx to I2C_SCL */
  GPIO_PinAFConfig(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_SOURCE, I2Cx_SCL_AF);

  /* Connect PXx to I2C_SDA */
  GPIO_PinAFConfig(I2Cx_SDA_GPIO_PORT, I2Cx_SDA_SOURCE, I2Cx_SDA_AF);

}

Und die I2C_InitTypeDef ist wie folgt definiert:

typedef struct  
{
  uint32_t I2C_ClockSpeed;      //Specifies the clock frequency.
                                //This parameter must be set to a value lower than 400kHz

  uint16_t I2C_Mode;            //Specifies the I2C mode.
                                //This parameter can be a value of @ref I2C_mode 

  uint16_t I2C_DutyCycle;       //Specifies the I2C fast mode duty cycle.
                                //This parameter can be a value of @ref I2C_duty_cycle_in_fast_mode 

  uint16_t I2C_OwnAddress1;     //Specifies the first device own address.
                                //This parameter can be a 7-bit or 10-bit address.

  uint16_t I2C_Ack;             //Enables or disables the acknowledgement.
                                //This parameter can be a value of @ref I2C_acknowledgement

  uint16_t I2C_AcknowledgedAddress; 
                                //Specifies if 7-bit or 10-bit address is acknowledged.
                                //This parameter can be a value of @ref I2C_acknowledged_address
}I2C_InitTypeDef;

Hinweis: die Verwendung einer Reihe von #define's (vielleicht in einer Kopf -) während der Konfiguration macht das Leben leichter. Zum Beispiel:

#define I2Cx                          I2C1
#define I2Cx_CLK                      RCC_APB1Periph_I2C1
#define I2Cx_SDA_GPIO_CLK             RCC_AHB1Periph_GPIOB
#define I2Cx_SDA_PIN                  GPIO_Pin_9                
#define I2Cx_SDA_GPIO_PORT            GPIOB                       
#define I2Cx_SDA_SOURCE               GPIO_PinSource9
#define I2Cx_SDA_AF                   GPIO_AF_I2C1

#define I2Cx_SCL_GPIO_CLK             RCC_AHB1Periph_GPIOB
#define I2Cx_SCL_PIN                  GPIO_Pin_6                
#define I2Cx_SCL_GPIO_PORT            GPIOB                    
#define I2Cx_SCL_SOURCE               GPIO_PinSource6
#define I2Cx_SCL_AF                   GPIO_AF_I2C1

...Und die MEISTEN wichtiger ist, werfen Sie einen Blick auf "stm32f4xx_i2c.c" verfügbar hier. Lesen Sie die "Verwendung Dieses Treibers" Kommentar am Anfang.

Hinweis: wenn die #define-Werte oben sind nicht zu finden, stellen Sie sicher, "stm32f4xx_rcc.h", "stm32f4xx_gpio.h" und "stm32f4xx.h"in Ihr Projekt.
Wenn Sie bereits alle diese in Ihrem Projekt, poste es, damit wir sehen können, was Sie getan haben dort.
Ich hatte bereits initilization code. Ich habe gewechselt von i2c3 zu i2c2, aber funktioniert immer noch nicht.
Müssen Sie rufen Sie I2C_ITConfig(I2C2, ENABLE). Ich sehe, dass Sie Ihren Beitrag bearbeitet Ihre init-code, aber nicht aufgeführt. Probieren Sie es aus.
Ich werde versuchen Sie es so bald wie möglich. Ich werde Sie wissen lassen. Danke!

InformationsquelleAutor bunkerdive

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