archive-gh-me/Espruino
1
0
Fork 0
mirror of https://github.com/espruino/Espruino.git synced 2025-12-08 19:06:15 +00:00
Code Issues Projects Releases Wiki Activity
Espruino/targetlibs/stm32l1/lib/stm32l1xx_lcd.c
Gordon Williams f3d6e0bc83 First commit
2013-09-26 14:39:04 +01:00

638 lines
24 KiB
C
Raw Blame History

/**
******************************************************************************
* @file stm32l1xx_lcd.c
* @author MCD Application Team
* @version V1.0.0
* @date 31-December-2010
* @brief This file provides firmware functions to manage the following
* functionalities of the LCD controller (LCD) peripheral:
* - Initialization and configuration
* - LCD RAM memory write
* - Interrupts and flags management
*
* @verbatim
*
* ===================================================================
* LCD Clock
* ===================================================================
* LCDCLK is the same as RTCCLK.
* To configure the RTCCLK/LCDCLK, proceed as follows:
* - Enable the Power Controller (PWR) APB1 interface clock using the
* RCC_APB1PeriphClockCmd() function.
* - Enable access to RTC domain using the PWR_RTCAccessCmd() function.
* - Select the RTC clock source using the RCC_RTCCLKConfig() function.
*
* The frequency generator allows you to achieve various LCD frame rates
* starting from an LCD input clock frequency (LCDCLK) which can vary
* from 32 kHz up to 1 MHz.
*
* ===================================================================
* LCD and low power modes
* ===================================================================
* The LCD still active during STOP mode.
*
* ===================================================================
* How to use this driver
* ===================================================================
* 1. Enable LCD clock using RCC_APB1PeriphClockCmd(RCC_APB1Periph_LCD, ENABLE) function
*
* 2. Configure the LCD prescaler, divider, duty, bias and voltage source
* using LCD_Init() function
*
* 3. Optionally you can enable/configure:
* - LCD High Drive using the LCD_HighDriveCmd() function
* - LCD High Drive using the LCD_MuxSegmentCmd() function
* - LCD Pulse ON Duration using the LCD_PulseOnDurationConfig() function
* - LCD Dead Time using the LCD_DeadTimeConfig() function
* - The LCD Blink mode and frequency using the LCD_BlinkConfig() function
* - The LCD Contrast using the LCD_ContrastConfig() function
*
* 4. Call the LCD_WaitForSynchro() function to wait for LCD_FCR register
* synchronization.
*
* 5. Call the LCD_Cmd() to enable the LCD controller
*
* 6. Wait until the LCD Controller status is enabled and the step-up
* converter is ready using the LCD_GetFlagStatus() and
* LCD_FLAG_ENS and LCD_FLAG_RDY flags.
*
* 7. Write to the LCD RAM memory using the LCD_Write() function.
*
* 8. Request an update display using the LCD_UpdateDisplayRequest()
* function.
*
* 9. Wait until the update display is finished by checking the UDD
* flag status using the LCD_GetFlagStatus(LCD_FLAG_UDD)
*
*
* @endverbatim
*
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>&copy; COPYRIGHT 2010 STMicroelectronics</center></h2>
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l1xx_lcd.h"
#include "stm32l1xx_rcc.h"
/** @addtogroup STM32L1xx_StdPeriph_Driver
* @{
*/
/** @defgroup LCD
* @brief LCD driver modules
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* ------------ LCD registers bit address in the alias region --------------- */
#define LCD_OFFSET (LCD_BASE - PERIPH_BASE)
/* --- CR Register ---*/
/* Alias word address of LCDEN bit */
#define CR_OFFSET (LCD_OFFSET + 0x00)
#define LCDEN_BitNumber 0x00
#define CR_LCDEN_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (LCDEN_BitNumber * 4))
/* Alias word address of MUX_SEG bit */
#define MUX_SEG_BitNumber 0x07
#define CR_MUX_SEG_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (MUX_SEG_BitNumber * 4))
/* --- FCR Register ---*/
/* Alias word address of HD bit */
#define FCR_OFFSET (LCD_OFFSET + 0x04)
#define HD_BitNumber 0x00
#define FCR_HD_BB (PERIPH_BB_BASE + (FCR_OFFSET * 32) + (HD_BitNumber * 4))
/* --- SR Register ---*/
/* Alias word address of UDR bit */
#define SR_OFFSET (LCD_OFFSET + 0x08)
#define UDR_BitNumber 0x02
#define SR_UDR_BB (PERIPH_BB_BASE + (SR_OFFSET * 32) + (UDR_BitNumber * 4))
#define FCR_MASK ((uint32_t)0xFC03FFFF) /* LCD FCR Mask */
#define CR_MASK ((uint32_t)0xFFFFFF81) /* LCD CR Mask */
#define PON_MASK ((uint32_t)0xFFFFFF8F) /* LCD PON Mask */
#define DEAD_MASK ((uint32_t)0xFFFFFC7F) /* LCD DEAD Mask */
#define BLINK_MASK ((uint32_t)0xFFFC1FFF) /* LCD BLINK Mask */
#define CONTRAST_MASK ((uint32_t)0xFFFFE3FF) /* LCD CONTRAST Mask */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup LCD_Private_Functions
* @{
*/
/** @defgroup LCD_Group1 Initialization and Configuration functions
* @brief Initialization and Configuration functions
*
@verbatim
===============================================================================
Initialization and Configuration functions
===============================================================================
@endverbatim
* @{
*/
/**
* @brief Deinitializes the LCD peripheral registers to their default reset
* values.
* @param None
* @retval None
*/
void LCD_DeInit(void)
{
/* Enable LCD reset state */
RCC_APB1PeriphResetCmd(RCC_APB1Periph_LCD, ENABLE);
/* Release LCD from reset state */
RCC_APB1PeriphResetCmd(RCC_APB1Periph_LCD, DISABLE);
}
/**
* @brief Initializes the LCD peripheral according to the specified parameters
* in the LCD_InitStruct.
* @note This function can be used only when the LCD is disabled.
* @param LCD_InitStruct: pointer to a LCD_InitTypeDef structure that contains
* the configuration information for the specified LCD peripheral.
* @retval None
*/
void LCD_Init(LCD_InitTypeDef* LCD_InitStruct)
{
/* Check function parameters */
assert_param(IS_LCD_PRESCALER(LCD_InitStruct->LCD_Prescaler));
assert_param(IS_LCD_DIVIDER(LCD_InitStruct->LCD_Divider));
assert_param(IS_LCD_DUTY(LCD_InitStruct->LCD_Duty));
assert_param(IS_LCD_BIAS(LCD_InitStruct->LCD_Bias));
assert_param(IS_LCD_VOLTAGE_SOURCE(LCD_InitStruct->LCD_VoltageSource));
LCD->FCR &= (uint32_t)FCR_MASK;
LCD->FCR |= (uint32_t)(LCD_InitStruct->LCD_Prescaler | LCD_InitStruct->LCD_Divider);
LCD_WaitForSynchro();
LCD->CR &= (uint32_t)CR_MASK;
LCD->CR |= (uint32_t)(LCD_InitStruct->LCD_Duty | LCD_InitStruct->LCD_Bias | \
LCD_InitStruct->LCD_VoltageSource);
}
/**
* @brief Fills each LCD_InitStruct member with its default value.
* @param LCD_InitStruct: pointer to a LCD_InitTypeDef structure which will
* be initialized.
* @retval None
*/
void LCD_StructInit(LCD_InitTypeDef* LCD_InitStruct)
{
/*--------------- Reset LCD init structure parameters values -----------------*/
LCD_InitStruct->LCD_Prescaler = LCD_Prescaler_1; /*!< Initialize the LCD_Prescaler member */
LCD_InitStruct->LCD_Divider = LCD_Divider_16; /*!< Initialize the LCD_Divider member */
LCD_InitStruct->LCD_Duty = LCD_Duty_Static; /*!< Initialize the LCD_Duty member */
LCD_InitStruct->LCD_Bias = LCD_Bias_1_4; /*!< Initialize the LCD_Bias member */
LCD_InitStruct->LCD_VoltageSource = LCD_VoltageSource_Internal; /*!< Initialize the LCD_VoltageSource member */
}
/**
* @brief Enables or disables the LCD Controller.
* @param NewState: new state of the LCD peripheral.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void LCD_Cmd(FunctionalState NewState)
{
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
*(__IO uint32_t *) CR_LCDEN_BB = (uint32_t)NewState;
}
/**
* @brief Waits until the LCD FCR register is synchronized in the LCDCLK domain.
* This function must be called after any write operation to LCD_FCR register.
* @param None
* @retval None
*/
void LCD_WaitForSynchro(void)
{
/* Loop until FCRSF flag is set */
while ((LCD->SR & LCD_FLAG_FCRSF) == (uint32_t)RESET)
{
}
}
/**
* @brief Enables or disables the low resistance divider. Displays with high
* internal resistance may need a longer drive time to achieve
* satisfactory contrast. This function is useful in this case if some
* additional power consumption can be tolerated.
* @note When this mode is enabled, the PulseOn Duration (PON) have to be
* programmed to 1/CK_PS (LCD_PulseOnDuration_1).
* @param NewState: new state of the low resistance divider.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void LCD_HighDriveCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
*(__IO uint32_t *) FCR_HD_BB = (uint32_t)NewState;
}
/**
* @brief Enables or disables the Mux Segment.
* @note This function can be used only when the LCD is disabled.
* @param NewState: new state of the Mux Segment.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void LCD_MuxSegmentCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
*(__IO uint32_t *) CR_MUX_SEG_BB = (uint32_t)NewState;
}
/**
* @brief Configures the LCD pulses on duration.
* @param LCD_PulseOnDuration: specifies the LCD pulse on duration in terms of
* CK_PS (prescaled LCD clock period) pulses.
* This parameter can be one of the following values:
* @arg LCD_PulseOnDuration_0: 0 pulse
* @arg LCD_PulseOnDuration_1: Pulse ON duration = 1/CK_PS
* @arg LCD_PulseOnDuration_2: Pulse ON duration = 2/CK_PS
* @arg LCD_PulseOnDuration_3: Pulse ON duration = 3/CK_PS
* @arg LCD_PulseOnDuration_4: Pulse ON duration = 4/CK_PS
* @arg LCD_PulseOnDuration_5: Pulse ON duration = 5/CK_PS
* @arg LCD_PulseOnDuration_6: Pulse ON duration = 6/CK_PS
* @arg LCD_PulseOnDuration_7: Pulse ON duration = 7/CK_PS
* @retval None
*/
void LCD_PulseOnDurationConfig(uint32_t LCD_PulseOnDuration)
{
/* Check the parameters */
assert_param(IS_LCD_PULSE_ON_DURATION(LCD_PulseOnDuration));
LCD->FCR &= (uint32_t)PON_MASK;
LCD->FCR |= (uint32_t)(LCD_PulseOnDuration);
}
/**
* @brief Configures the LCD dead time.
* @param LCD_DeadTime: specifies the LCD dead time.
* This parameter can be one of the following values:
* @arg LCD_DeadTime_0: No dead Time
* @arg LCD_DeadTime_1: One Phase between different couple of Frame
* @arg LCD_DeadTime_2: Two Phase between different couple of Frame
* @arg LCD_DeadTime_3: Three Phase between different couple of Frame
* @arg LCD_DeadTime_4: Four Phase between different couple of Frame
* @arg LCD_DeadTime_5: Five Phase between different couple of Frame
* @arg LCD_DeadTime_6: Six Phase between different couple of Frame
* @arg LCD_DeadTime_7: Seven Phase between different couple of Frame
* @retval None
*/
void LCD_DeadTimeConfig(uint32_t LCD_DeadTime)
{
/* Check the parameters */
assert_param(IS_LCD_DEAD_TIME(LCD_DeadTime));
LCD->FCR &= (uint32_t)DEAD_MASK;
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 RTC_IT: specifies the RTC 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 2010 STMicroelectronics *****END OF FILE****/
Reference in New Issue View Git Blame Copy Permalink