stm32l1xx_lcd.c

VS1003_MP3_SPI_SDHC_FAT32

  LCD->FCR |= (uint32_t)(LCD_DeadTime);
}

/**
  * @brief  Configures the LCD Blink mode and Blink frequency.
  * @param  LCD_BlinkMode: specifies the LCD blink mode.
  *   This parameter can be one of the following values:
  *     @arg LCD_BlinkMode_Off:           Blink disabled
  *     @arg LCD_BlinkMode_SEG0_COM0:     Blink enabled on SEG[0], COM[0] (1 pixel)
  *     @arg LCD_BlinkMode_SEG0_AllCOM:   Blink enabled on SEG[0], all COM (up to 8
  *                                       pixels according to the programmed duty)
  *     @arg LCD_BlinkMode_AllSEG_AllCOM: Blink enabled on all SEG and all COM 
  *                                       (all pixels)
  * @param  LCD_BlinkFrequency: specifies the LCD blink frequency.
  *   This parameter can be one of the following values:
  *     @arg LCD_BlinkFrequency_Div8:    The Blink frequency = fLcd/8
  *     @arg LCD_BlinkFrequency_Div16:   The Blink frequency = fLcd/16
  *     @arg LCD_BlinkFrequency_Div32:   The Blink frequency = fLcd/32
  *     @arg LCD_BlinkFrequency_Div64:   The Blink frequency = fLcd/64
  *     @arg LCD_BlinkFrequency_Div128:  The Blink frequency = fLcd/128
  *     @arg LCD_BlinkFrequency_Div256:  The Blink frequency = fLcd/256
  *     @arg LCD_BlinkFrequency_Div512:  The Blink frequency = fLcd/512
  *     @arg LCD_BlinkFrequency_Div1024: The Blink frequency = fLcd/1024
  * @retval None
  */
void LCD_BlinkConfig(uint32_t LCD_BlinkMode, uint32_t LCD_BlinkFrequency)
{
  /* Check the parameters */
  assert_param(IS_LCD_BLINK_MODE(LCD_BlinkMode));
  assert_param(IS_LCD_BLINK_FREQUENCY(LCD_BlinkFrequency));
  
  LCD->FCR &= (uint32_t)BLINK_MASK;
  LCD->FCR |= (uint32_t)(LCD_BlinkMode | LCD_BlinkFrequency);
}

/**
  * @brief  Configures the LCD Contrast.
  * @param  LCD_Contrast: specifies the LCD Contrast.
  *   This parameter can be one of the following values:
  *     @arg LCD_Contrast_Level_0: Maximum Voltage = 2.60V
  *     @arg LCD_Contrast_Level_1: Maximum Voltage = 2.73V
  *     @arg LCD_Contrast_Level_2: Maximum Voltage = 2.86V
  *     @arg LCD_Contrast_Level_3: Maximum Voltage = 2.99V
  *     @arg LCD_Contrast_Level_4: Maximum Voltage = 3.12V
  *     @arg LCD_Contrast_Level_5: Maximum Voltage = 3.25V
  *     @arg LCD_Contrast_Level_6: Maximum Voltage = 3.38V
  *     @arg LCD_Contrast_Level_7: Maximum Voltage = 3.51V
  * @retval None
  */
void LCD_ContrastConfig(uint32_t LCD_Contrast)
{
  /* Check the parameters */
  assert_param(IS_LCD_CONTRAST(LCD_Contrast));

  LCD->FCR &= (uint32_t)CONTRAST_MASK;
  LCD->FCR |= (uint32_t)(LCD_Contrast);
}

/**
  * @}
  */

/** @defgroup LCD_Group2  LCD RAM memory write functions
 *  @brief    LCD RAM memory write functions
 *
@verbatim
 ===============================================================================
                  ##### LCD RAM memory write functions #####
 ===============================================================================
    [..] Using its double buffer memory the LCD controller ensures the coherency 
         of the displayed information without having to use interrupts to control 
         LCD_RAM modification.

    [..] The application software can access the first buffer level (LCD_RAM) through
         the APB interface. Once it has modified the LCD_RAM, it sets the UDR flag 
         in the LCD_SR register using the LCD_UpdateDisplayRequest() function.

    [..] This UDR flag (update display request) requests the updated information 
         to be moved into the second buffer level (LCD_DISPLAY).

    [..] This operation is done synchronously with the frame (at the beginning of 
         the next frame), until the update is completed, the LCD_RAM is write 
         protected and the UDR flag stays high.

    [..] Once the update is completed another flag (UDD - Update Display Done) is 
         set and generates an interrupt if the UDDIE bit in the LCD_FCR register 
        is set.

    [..] The time it takes to update LCD_DISPLAY is, in the worst case, one odd 
         and one even frame.

    [..] The update will not occur (UDR = 1 and UDD = 0) until the display is
         enabled (LCDEN = 1).

@endverbatim
  * @{
  */

/**
  * @brief  Writes a word in the specific LCD RAM.
  * @param  LCD_RAMRegister: specifies the LCD Contrast.
  *   This parameter can be one of the following values:
  *     @arg LCD_RAMRegister_0: LCD RAM Register 0
  *     @arg LCD_RAMRegister_1: LCD RAM Register 1
  *     @arg LCD_RAMRegister_2: LCD RAM Register 2
  *     @arg LCD_RAMRegister_3: LCD RAM Register 3
  *     @arg LCD_RAMRegister_4: LCD RAM Register 4
  *     @arg LCD_RAMRegister_5: LCD RAM Register 5
  *     @arg LCD_RAMRegister_6: LCD RAM Register 6
  *     @arg LCD_RAMRegister_7: LCD RAM Register 7
  *     @arg LCD_RAMRegister_8: LCD RAM Register 8
  *     @arg LCD_RAMRegister_9: LCD RAM Register 9
  *     @arg LCD_RAMRegister_10: LCD RAM Register 10
  *     @arg LCD_RAMRegister_11: LCD RAM Register 11
  *     @arg LCD_RAMRegister_12: LCD RAM Register 12
  *     @arg LCD_RAMRegister_13: LCD RAM Register 13
  *     @arg LCD_RAMRegister_14: LCD RAM Register 14
  *     @arg LCD_RAMRegister_15: LCD RAM Register 15
  * @param  LCD_Data: specifies LCD Data Value to be written.
  * @retval None
  */
void LCD_Write(uint32_t LCD_RAMRegister, uint32_t LCD_Data)
{
  /* Check the parameters */
  assert_param(IS_LCD_RAM_REGISTER(LCD_RAMRegister));

  /* Copy data bytes to RAM register */
  LCD->RAM[LCD_RAMRegister] = (uint32_t)LCD_Data;
}

/**
  * @brief  Enables the Update Display Request.
  * @note   Each time software modifies the LCD_RAM it must set the UDR bit to
  *         transfer the updated data to the second level buffer.
  *         The UDR bit stays set until the end of the update and during this
  *         time the LCD_RAM is write protected.
  * @note   When the display is disabled, the update is performed for all
  *         LCD_DISPLAY locations.
  *         When the display is enabled, the update is performed only for locations
  *         for which commons are active (depending on DUTY). For example if
  *         DUTY = 1/2, only the LCD_DISPLAY of COM0 and COM1 will be updated.
  * @param  None
  * @retval None
  */
void LCD_UpdateDisplayRequest(void)
{
  *(__IO uint32_t *) SR_UDR_BB = (uint32_t)0x01;
}

/**
  * @}
  */

/** @defgroup LCD_Group3 Interrupts and flags management functions
 *  @brief   Interrupts and flags management functions
 *
@verbatim
 ===============================================================================
            ##### Interrupts and flags management functions #####
 ===============================================================================

@endverbatim
  * @{
  */

/**
  * @brief  Enables or disables the specified LCD interrupts.
  * @param  LCD_IT: specifies the LCD interrupts sources to be enabled or disabled.
  *   This parameter can be any combination of the following values:
  *     @arg LCD_IT_SOF: Start of Frame Interrupt
  *     @arg LCD_IT_UDD: Update Display Done Interrupt
  * @param NewState: new state of the specified LCD interrupts.
  *   This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void LCD_ITConfig(uint32_t LCD_IT, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_LCD_IT(LCD_IT));
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    LCD->FCR |= LCD_IT;
  }
  else
  {
    LCD->FCR &= (uint32_t)~LCD_IT;
  }
}

/**
  * @brief  Checks whether the specified LCD flag is set or not.
  * @param  LCD_FLAG: specifies the flag to check.
  *   This parameter can be one of the following values:
  *     @arg LCD_FLAG_ENS: LCD Enabled flag. It indicates the LCD controller status.
  *      @note  The ENS bit is set immediately when the LCDEN bit in the LCD_CR
  *             goes from 0 to 1. On deactivation it reflects the real status of
  *             LCD so it becomes 0 at the end of the last displayed frame.
  *     @arg LCD_FLAG_SOF: Start of Frame flag. This flag is set by hardware at
  *       the beginning of a new frame, at the same time as the display data is
  *       updated.
  *     @arg LCD_FLAG_UDR: Update Display Request flag.
  *     @arg LCD_FLAG_UDD: Update Display Done flag.
  *     @arg LCD_FLAG_RDY: Step_up converter Ready flag. It indicates the status
  *                        of the step-up converter.
  *     @arg LCD_FLAG_FCRSF: LCD Frame Control Register Synchronization Flag.
  *       This flag is set by hardware each time the LCD_FCR register is updated
  *       in the LCDCLK domain.
  * @retval The new state of LCD_FLAG (SET or RESET).
  */
FlagStatus LCD_GetFlagStatus(uint32_t LCD_FLAG)
{
  FlagStatus bitstatus = RESET;
  
  /* Check the parameters */
  assert_param(IS_LCD_GET_FLAG(LCD_FLAG));
  
  if ((LCD->SR & LCD_FLAG) != (uint32_t)RESET)
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus;
}

/**
  * @brief  Clears the LCD's pending flags.
  * @param  LCD_FLAG: specifies the flag to clear.
  *   This parameter can be any combination of the following values:
  *     @arg LCD_FLAG_SOF: Start of Frame Interrupt
  *     @arg LCD_FLAG_UDD: Update Display Done Interrupt
  * @retval None
  */
void LCD_ClearFlag(uint32_t LCD_FLAG)
{
  /* Check the parameters */
  assert_param(IS_LCD_CLEAR_FLAG(LCD_FLAG));
    
  /* Clear the corresponding LCD flag */
  LCD->CLR = (uint32_t)LCD_FLAG;
}

/**
  * @brief  Checks whether the specified RTC interrupt has occurred or not.
  * @param  LCD_IT: specifies the LCD interrupts sources to check.
  *   This parameter can be one of the following values:
  *     @arg LCD_IT_SOF: Start of Frame Interrupt
  *     @arg LCD_IT_UDD: Update Display Done Interrupt.
  *     @note If the device is in STOP mode (PCLK not provided) UDD will not 
  *          generate an interrupt even if UDDIE = 1. 
  *          If the display is not enabled the UDD interrupt will never occur.
  * @retval The new state of the LCD_IT (SET or RESET).
  */
ITStatus LCD_GetITStatus(uint32_t LCD_IT)
{
  ITStatus bitstatus = RESET;
  
  /* Check the parameters */
  assert_param(IS_LCD_GET_IT(LCD_IT));
    
  if ((LCD->SR & LCD_IT) != (uint16_t)RESET)
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  
  if (((LCD->FCR & LCD_IT) != (uint16_t)RESET) && (bitstatus != (uint32_t)RESET))
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus;
}

/**
  * @brief  Clears the LCD's interrupt pending bits.
  * @param  LCD_IT: specifies the interrupt pending bit to clear.
  *   This parameter can be any combination of the following values:
  *     @arg LCD_IT_SOF: Start of Frame Interrupt
  *     @arg LCD_IT_UDD: Update Display Done Interrupt
  * @retval None
  */
void LCD_ClearITPendingBit(uint32_t LCD_IT)
{
  /* Check the parameters */
  assert_param(IS_LCD_IT(LCD_IT));
  
  /* Clear the corresponding LCD pending bit */
  LCD->CLR = (uint32_t)LCD_IT;
}

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/******************* (C) COPYRIGHT 2012 STMicroelectronics *****END OF FILE****/