📄 stm32100b_eval_cec.c

📁 STM32的SPI1与SPI2通信
💻 C
📖 第 1 页 / 共 4 页
字号:
上一页 1 2 34
      MyLogicalAddress = 0x01;
      errorstatus = HDMI_CEC_OK;
    }
    else if (errorstatus == HDMI_CEC_OK)
    {
      /* Clear CEC CSR register */
      CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

      CEC_EndOfMessageCmd(DISABLE);

      CEC_OwnAddressConfig(0x2); /* Own address = 0x2 */

      CEC_EndOfMessageCmd(ENABLE);

      CEC_SendDataByte(0x22);

      /* Start of message */
      CEC_StartOfMessage();

      count = 0;

      /* Wait till the header message is sent */
      while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
      {
        count++;
      }

      if (count >= HDMI_CEC_TIMEOUT_VALUE)
      {
        errorstatus = HDMI_CEC_TIMEOUT;
        return(errorstatus);
      }
      errorstatus = HDMI_CEC_GetErrorStatus();

      if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
      {
        MyLogicalAddress = 0x02;
        errorstatus = HDMI_CEC_OK;
      }
      else if (errorstatus == HDMI_CEC_OK)
      {
        /* Clear CEC CSR register */
        CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

        CEC_EndOfMessageCmd(DISABLE);

        CEC_OwnAddressConfig(0x9); /* Own address = 0x9 */

        CEC_EndOfMessageCmd(ENABLE);

        CEC_SendDataByte(0x99);

        /* Start of message */
        CEC_StartOfMessage();

        count = 0;

        /* Wait till the header message is sent */
        while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
        {
          count++;
        }

        if (count >= HDMI_CEC_TIMEOUT_VALUE)
        {
          errorstatus = HDMI_CEC_TIMEOUT;
          return(errorstatus);
        }
        errorstatus = HDMI_CEC_GetErrorStatus();

        if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
        {
          MyLogicalAddress = 0x09;
          errorstatus = HDMI_CEC_OK;
        }
        else if (errorstatus == HDMI_CEC_OK)
        {
          MyLogicalAddress = 0x0F;
          errorstatus = HDMI_CEC_DEVICE_UNREGISTRED;
        }
      }
    }
    /* Clear CEC CSR register */
    CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);
    CEC_EndOfMessageCmd(DISABLE);
  }

  /* Device type = CEC_TUNER */
  if (DeviceType == HDMI_CEC_TUNER)
  {
    CEC_OwnAddressConfig(0x3); /* Own address = 0x3 */

    CEC_EndOfMessageCmd(ENABLE);

    CEC_SendDataByte(0x33);

    /* Start of message */
    CEC_StartOfMessage();

    count = 0;

    /* Wait till the header message is sent */
    while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
    {
      count++;
    }

    if (count >= HDMI_CEC_TIMEOUT_VALUE)
    {
      errorstatus = HDMI_CEC_TIMEOUT;
      return(errorstatus);
    }
    errorstatus = HDMI_CEC_GetErrorStatus();

    if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
    {
      MyLogicalAddress = 0x03;
      errorstatus = HDMI_CEC_OK;
    }
    else if (errorstatus == HDMI_CEC_OK)
    {
      /* Clear CEC CSR register */
      CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

      CEC_EndOfMessageCmd(DISABLE);

      CEC_OwnAddressConfig(0x6); /* Own address = 0x6 */

      CEC_EndOfMessageCmd(ENABLE);

      CEC_SendDataByte(0x66);

      /* Start of message */
      CEC_StartOfMessage();

      count = 0;

      /* Wait till the header message is sent */
      while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
      {
        count++;
      }

      if (count >= HDMI_CEC_TIMEOUT_VALUE)
      {
        errorstatus = HDMI_CEC_TIMEOUT;
        return(errorstatus);
      }
      errorstatus = HDMI_CEC_GetErrorStatus();

      if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
      {
        MyLogicalAddress = 0x06;
        errorstatus = HDMI_CEC_OK;
      }
      else if (errorstatus == HDMI_CEC_OK)
      {
        /* Clear CEC CSR register */
        CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

        CEC_EndOfMessageCmd(DISABLE);

        CEC_OwnAddressConfig(0x7); /* Own address = 0x7 */

        CEC_EndOfMessageCmd(ENABLE);

        CEC_SendDataByte(0x77);

        /* Start of message */
        CEC_StartOfMessage();

        count = 0;

        /* Wait till the header message is sent */
        while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
        {
          count++;
        }

        if (count >= HDMI_CEC_TIMEOUT_VALUE)
        {
          errorstatus = HDMI_CEC_TIMEOUT;
          return(errorstatus);
        }
        errorstatus = HDMI_CEC_GetErrorStatus();

        if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
        {
          MyLogicalAddress = 0x07;
          errorstatus = HDMI_CEC_OK;
        }
        else if (errorstatus == HDMI_CEC_OK)
        {
          /* Clear CEC CSR register */
          CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

          CEC_EndOfMessageCmd(DISABLE);

          CEC_OwnAddressConfig(0xA); /* Own address = 0xA */

          CEC_EndOfMessageCmd(ENABLE);

          CEC_SendDataByte(0xAA);

          /* Start of message */
          CEC_StartOfMessage();

          count = 0;

          /* Wait till the header message is sent */
          while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
          {
            count++;
          }

          if (count >= HDMI_CEC_TIMEOUT_VALUE)
          {
            errorstatus = HDMI_CEC_TIMEOUT;
            return(errorstatus);
          }
          errorstatus = HDMI_CEC_GetErrorStatus();

          if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
          {
            MyLogicalAddress = 0x0A;
            errorstatus = HDMI_CEC_OK;
          }
          else if (errorstatus == HDMI_CEC_OK)
          {
            MyLogicalAddress = 0x0F;
            errorstatus = HDMI_CEC_DEVICE_UNREGISTRED;
          }
        }
      }
    }
    /* Clear CEC CSR register */
    CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);
    CEC_EndOfMessageCmd(DISABLE);
  }

  /* Device type = CEC_PLAYBACK */
  if (DeviceType == HDMI_CEC_PLAYBACK)
  {
    CEC_OwnAddressConfig(0x4); /* Own address = 0x4 */

    CEC_EndOfMessageCmd(ENABLE);

    CEC_SendDataByte(0x44);

    /* Start of message */
    CEC_StartOfMessage();

    count = 0;

    /* Wait till the header message is sent */
    while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
    {
      count++;
    }

    if (count >= HDMI_CEC_TIMEOUT_VALUE)
    {
      errorstatus = HDMI_CEC_TIMEOUT;
      return(errorstatus);
    }

    errorstatus = HDMI_CEC_GetErrorStatus();

    if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
    {
      MyLogicalAddress = 0x04;
      errorstatus = HDMI_CEC_OK;
    }
    else if (errorstatus == HDMI_CEC_OK)
    {
      /* Clear CEC CSR register */
      CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

      CEC_EndOfMessageCmd(DISABLE);

      CEC_OwnAddressConfig(0x8); /* Own address = 0x8 */

      CEC_EndOfMessageCmd(ENABLE);

      CEC_SendDataByte(0x88);

      /* Start of message */
      CEC_StartOfMessage();

      count = 0;

      /* Wait till the header message is sent */
      while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
      {
        count++;
      }

      if (count >= HDMI_CEC_TIMEOUT_VALUE)
      {
        errorstatus = HDMI_CEC_TIMEOUT;
        return(errorstatus);
      }
      errorstatus = HDMI_CEC_GetErrorStatus();

      if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
      {
        MyLogicalAddress = 0x08;
        errorstatus = HDMI_CEC_OK;
      }
      else if (errorstatus == HDMI_CEC_OK)
      {
        /* Clear CEC CSR register */
        CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);

        CEC_EndOfMessageCmd(DISABLE);

        CEC_OwnAddressConfig(0xB); /* Own address = 0xBB */

        CEC_EndOfMessageCmd(ENABLE);

        CEC_SendDataByte(0xBB);

        /* Start of message */
        CEC_StartOfMessage();

        count = 0;

        /* Wait till the header message is sent */
        while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
        {
          count++;
        }

        if (count >= HDMI_CEC_TIMEOUT_VALUE)
        {
          errorstatus = HDMI_CEC_TIMEOUT;
          return(errorstatus);
        }

        errorstatus = HDMI_CEC_GetErrorStatus();

        if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
        {
          MyLogicalAddress = 0x0B;
          errorstatus = HDMI_CEC_OK;
        }
        else if (errorstatus == HDMI_CEC_OK)
        {
          MyLogicalAddress = 0x0F;
          errorstatus = HDMI_CEC_DEVICE_UNREGISTRED;
        }
      }
    }

    /* Clear CEC CSR register */
    CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);
    CEC_EndOfMessageCmd(DISABLE);
  }

  /* Device type = CEC Audio System */
  if (DeviceType == HDMI_CEC_AUDIOSYSTEM)
  {
    CEC_OwnAddressConfig(0x5); /* Own address = 0x5 */

    CEC_EndOfMessageCmd(ENABLE);

    CEC_SendDataByte(0x55);

    /* Start of message */
    CEC_StartOfMessage();

    count = 0;

    /* Wait till the header message is sent */
    while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE))
    {
      count++;
    }

    if (count >= HDMI_CEC_TIMEOUT_VALUE)
    {
      errorstatus = HDMI_CEC_TIMEOUT;
      return(errorstatus);
    }

    errorstatus = HDMI_CEC_GetErrorStatus();

    if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE)
    {
      MyLogicalAddress = 0x05;
      errorstatus = HDMI_CEC_OK;
    }
    else if (errorstatus == HDMI_CEC_OK)
    {
      MyLogicalAddress = 0x0F;
      errorstatus = HDMI_CEC_DEVICE_UNREGISTRED;
    }

    /* Clear CEC CSR register */
    CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);
    CEC_EndOfMessageCmd(DISABLE);
  }

  return errorstatus;
}

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */  

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
上一页 1 2 34
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -