stm8s_uart2.c

STM8s

  * @param[in] UART2_Mode specifies the LIN mode.
  * This parameter can be any of the @ref UART2_LinMode_TypeDef values.
  * @param[in] UART2_Autosync specifies the LIN automatic resynchronization mode.
  * This parameter can be any of the @ref UART2_LinAutosync_TypeDef values.
  * @param[in] UART2_DivUp specifies the LIN divider update method.
  * This parameter can be any of the @ref UART2_LinDivUp_TypeDef values.
  * @retval None
  */
void UART2_LINConfig(UART2_LinMode_TypeDef UART2_Mode, UART2_LinAutosync_TypeDef UART2_Autosync, UART2_LinDivUp_TypeDef UART2_DivUp)
{
    assert_param(IS_UART2_SLAVE_OK(UART2_Mode));

    assert_param(IS_UART2_AUTOSYNC_OK(UART2_Autosync));

    assert_param(IS_UART2_DIVUP_OK(UART2_DivUp));

    if (UART2_Mode != UART2_LIN_MODE_MASTER)
    {
        UART2->CR6 |=  UART2_CR6_LSLV;
    }
    else
    {
        UART2->CR6 &= ((u8)~UART2_CR6_LSLV);
    }

    if (UART2_Autosync != UART2_LIN_AUTOSYNC_DISABLE)
    {
        UART2->CR6 |=  UART2_CR6_LASE ;
    }
    else
    {
        UART2->CR6 &= ((u8)~ UART2_CR6_LASE );
    }

    if (UART2_DivUp != UART2_LIN_DIVUP_LBRR1)
    {
        UART2->CR6 |=  UART2_CR6_LDUM;
    }
    else
    {
        UART2->CR6 &= ((u8)~ UART2_CR6_LDUM);
    }

}

/**
  * @brief Enables or disables the UART2 LIN mode.
  * @par Full description:
  * Enables or disables the UART2抯 LIN mode.
  * @param[in] NewState is new state of the UART2 LIN mode.
  * This parameter can be:
  * - ENABLE
  * - DISABLE
  * @retval None
  */
void UART2_LINCmd(FunctionalState NewState)
{
    assert_param(IS_FUNCTIONALSTATE_OK(NewState));

    if (NewState != DISABLE)
    {
        /* Enable the LIN mode by setting the LINE bit in the CR2 register */
        UART2->CR3 |= UART2_CR3_LINEN;
    }
    else
    {
        /* Disable the LIN mode by clearing the LINE bit in the CR2 register */
        UART2->CR3 &= ((u8)~UART2_CR3_LINEN);
    }
}
/**
  * @brief Enables or disables the UART2 Smart Card mode.
  * @par Full description:
  * Enables or disables the UART2 Smart Card mode.
  * @par This function is related to SmartCard mode.
  * @param[in] NewState: new state of the Smart Card mode.
  * This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void UART2_SmartCardCmd(FunctionalState NewState)
{
    assert_param(IS_FUNCTIONALSTATE_OK(NewState));

    if (NewState != DISABLE)
    {
        /* Enable the SC mode by setting the SCEN bit in the CR5 register */
        UART2->CR5 |= UART2_CR5_SCEN;
    }
    else
    {
        /* Disable the SC mode by clearing the SCEN bit in the CR5 register */
        UART2->CR5 &= ((u8)(~UART2_CR5_SCEN));
    }
}

/**
  * @brief Enables or disables NACK transmission.
  * @par Full description:
  * Enables or disables NACK transmission.
  * @par This function is valid only for UART2 because is related to SmartCard mode.
  * @param[in] NewState: new state of the Smart Card mode.
  * This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void UART2_SmartCardNACKCmd(FunctionalState NewState)
{
    assert_param(IS_FUNCTIONALSTATE_OK(NewState));

    if (NewState != DISABLE)
    {
        /* Enable the NACK transmission by setting the NACK bit in the CR5 register */
        UART2->CR5 |= UART2_CR5_NACK;
    }
    else
    {
        /* Disable the NACK transmission by clearing the NACK bit in the CR5 register */
        UART2->CR5 &= ((u8)~(UART2_CR5_NACK));
    }
}
/**
  * @brief Selects the UART2 WakeUp method.
  * @par Full description:
  * Selects the UART2 WakeUp method.
  * @param[in] UART2_WakeUp: specifies the UART2 wakeup method.
  * This parameter can be any of the @ref UART2_WakeUp_TypeDef values.
  * @retval None
  */
void UART2_WakeUpConfig(UART2_WakeUp_TypeDef UART2_WakeUp)
{
    assert_param(IS_UART2_WAKEUP_OK(UART2_WakeUp));

    UART2->CR1 &= ((u8)~UART2_CR1_WAKE);
    UART2->CR1 |= (u8)UART2_WakeUp;
}

/**
  * @brief Determines if the UART2 is in mute mode or not.
  * @par Full description:
  * Determines if the UART2 is in mute mode or not.
  * @param[in] NewState: new state of the UART2 mode.
  * This parameter can be:
  * - ENABLE
  * - DISABLE
  * @retval None
  */
void UART2_ReceiverWakeUpCmd(FunctionalState NewState)
{
    assert_param(IS_FUNCTIONALSTATE_OK(NewState));

    if (NewState != DISABLE)
    {
        /* Enable the mute mode UART2 by setting the RWU bit in the CR2 register */
        UART2->CR2 |= UART2_CR2_RWU;
    }
    else
    {
        /* Disable the mute mode UART2 by clearing the RWU bit in the CR1 register */
        UART2->CR2 &= ((u8)~UART2_CR2_RWU);
    }
}


/**
  * @brief Returns the most recent received data by the UART2 peripheral.
  * @par Full description:
  * Returns the most recent received data by the UART2 peripheral.
  * @retval u16 Received Data
  * @par Required preconditions:
  * UART2_Cmd(ENABLE);
  */
u8 UART2_ReceiveData8(void)
{
    return ((u8)UART2->DR);
}

/**
  * @brief Returns the most recent received data by the UART2 peripheral.
  * @par Full description:
  * Returns the most recent received data by the UART2 peripheral.
  * @retval u16 Received Data
  * @par Required preconditions:
  * UART2_Cmd(ENABLE);
  */
u16 UART2_ReceiveData9(void)
{
    return (u16)((((u16)UART2->DR) | ((u16)(((u16)((u16)UART2->CR1 & (u16)UART2_CR1_R8)) << 1))) & ((u16)0x01FF));
}



/**
  * @brief Transmits 8 bit data through the UART2 peripheral.
  * @par Full description:
  * Transmits 8 bit data through the UART2 peripheral.
  * @param[in] Data: the data to transmit.
  * @retval None
  * @par Required preconditions:
  * UART2_Cmd(ENABLE);
  */
void UART2_SendData8(u8 Data)
{
    /* Transmit Data */
		while(!(UART2->SR&UART2_SR_TXE));
    UART2->DR = Data;
}

/**
  * @brief Transmits 9 bit data through the UART2 peripheral.
  * @par Full description:
  * Transmits 9 bit data through the UART2 peripheral.
  * @param[in] Data: the data to transmit.
  * @retval None
  * @par Required preconditions:
  * UART2_Cmd(ENABLE);
  */
void UART2_SendData9(u16 Data)
{
    UART2->CR1 &= ((u8)~UART2_CR1_T8);                  /* Clear the transmit data bit 8     */
    UART2->CR1 |= (u8)(((u8)(Data >> 2)) & UART2_CR1_T8); /* Write the transmit data bit [8]   */
    UART2->DR   = (u8)(Data);                    /* Write the transmit data bit [0:7] */

}
/**
  * @brief Transmits break characters.
  * @par Full description:
  * Transmits break characters on the UART2 peripheral.
  * @retval None
  */
void UART2_SendBreak(void)
{
    UART2->CR2 |= UART2_CR2_SBK;
}
/**
  * @brief Sets the address of the UART2 node.
  * @par Full description:
  * Sets the address of the UART2 node.
  * @param[in] UART2_Address: Indicates the address of the UART2 node.
  * @retval None
  */

void UART2_SetAddress(u8 UART2_Address)
{
    /*assert_param for x UART2_Address*/
    assert_param(IS_UART2_ADDRESS_OK(UART2_Address));

    /* Clear the UART2 address */
    UART2->CR4 &= ((u8)~UART2_CR4_ADD);
    /* Set the UART2 address node */
    UART2->CR4 |= UART2_Address;
}
/**
  * @brief Sets the specified UART2 guard time.
  * @par Full description:
  * Sets the address of the UART2 node.
  * @par This function is related to SmartCard mode.
  * @param[in] UART2_GuardTime: specifies the guard time.
  * @retval None
  * @par Required preconditions:
  * SmartCard Mode Enabled
  */
void UART2_SetGuardTime(u8 UART2_GuardTime)
{
    /* Set the UART2 guard time */
    UART2->GTR = UART2_GuardTime;
}

/**
  * @brief Sets the system clock prescaler.
  * @par Full description:
  * Sets the system clock prescaler.
  * @par This function is related to SmartCard and IrDa mode.
  * @param[in] UART2_Prescaler: specifies the prescaler clock.
  *                    This parameter can be one of the following values:
  *                       @par IrDA Low Power Mode
  *   The clock source is diveded by the value given in the register (8 bits)
  *                       - 0000 0000 Reserved
  *                       - 0000 0001 divides the clock source by 1
  *                       - 0000 0010 divides the clock source by 2
  *                       - ...........................................................
  *                       @par Smart Card Mode
  *   The clock source is diveded by the value given in the register (5 significant bits) multipied by 2
  *                       - 0 0000 Reserved
  *                       - 0 0001 divides the clock source by 2
  *                       - 0 0010 divides the clock source by 4
  *                       - 0 0011 divides the clock source by 6
  *                       - ...........................................................
  * @retval None
  * @par Required preconditions:
  * IrDA Low Power mode or smartcard mode enabled
  */
void UART2_SetPrescaler(u8 UART2_Prescaler)
{
    /* Load the UART2 prescaler value*/
    UART2->PSCR = UART2_Prescaler;
}

/**
  * @brief Checks whether the specified UART2 flag is set or not.
  * @par Full description:
  * Checks whether the specified UART2 flag is set or not.
  * @param[in] UART2_FLAG specifies the flag to check.
  * This parameter can be any of the @ref UART2_Flag_TypeDef enumeration.
  * @retval FlagStatus (SET or RESET)
  */

FlagStatus UART2_GetFlagStatus(UART2_Flag_TypeDef UART2_FLAG)
{
    FlagStatus status = RESET;

    /* Check parameters */
    assert_param(IS_UART2_FLAG_OK(UART2_FLAG));

    /* Check the status of the specified UART2 flag*/
    if (UART2_FLAG == UART2_FLAG_LBDF)
    {
        if ((UART2->CR4 & (u8)UART2_FLAG) != (u8)0x00)
        {
            /* UART2_FLAG is set*/
            status = SET;
        }
        else
        {