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/**
******************************************************************************
* @file lib_lcd.c
* @author Application Team
* @version V1.1.0
* @date 2019-10-28
* @brief LCD library.
******************************************************************************
* @attention
*
******************************************************************************
*/
#include "lib_lcd.h"
#include "lib_LoadNVR.h"
//registers default reset values
#define LCD_CTRL_RSTValue 0
#define LCD_CTRL2_RSTValue 0
#define LCD_SEGCTRL0_RSTValue 0
#define LCD_SEGCTRL1_RSTValue 0
#define LCD_SEGCTRL2_RSTValue 0
/* COMx IO */
const LCD_COMIO lcd_comio[] =
{
{&GPIOD->OEN, GPIO_Pin_0},
{&GPIOD->OEN, GPIO_Pin_1},
{&GPIOD->OEN, GPIO_Pin_2},
{&GPIOD->OEN, GPIO_Pin_3},
{&GPIOD->OEN, GPIO_Pin_4},
{&GPIOD->OEN, GPIO_Pin_5},
{&GPIOD->OEN, GPIO_Pin_6},
{&GPIOD->OEN, GPIO_Pin_7},
};
/**
* @brief Initializes LCD.
* @param InitStruct: LCD configuration.
Type:
LCD_TYPE_4COM
LCD_TYPE_6COM
LCD_TYPE_8COM
Drv:
LCD_DRV_300
LCD_DRV_600
LCD_DRV_150
LCD_DRV_200
FRQ:
LCD_FRQ_64H
LCD_FRQ_128H
LCD_FRQ_256H
LCD_FRQ_512H
SWPR: Frame buffer switch period(0.5 sec * (SWPR + 1)).
FBMODE:
LCD_FBMODE_BUFA
LCD_FBMODE_BUFAB
LCD_FBMODE_BUFABLANK
BKFILL:
LCD_BKFILL_1
LCD_BKFILL_0
* @retval None
*/
void LCD_Init(LCD_InitType *InitStruct)
{
uint32_t tmp_reg1, tmp_reg2;
/* Check parameters */
assert_parameters(IS_LCD_TYPE(InitStruct->Type));
assert_parameters(IS_LCD_DRV(InitStruct->Drv));
assert_parameters(IS_LCD_FRQ(InitStruct->FRQ));
assert_parameters(IS_LCD_SWPR(InitStruct->SWPR));
assert_parameters(IS_LCD_FBMODE(InitStruct->FBMODE));
assert_parameters(IS_LCD_BKFILL(InitStruct->BKFILL));
tmp_reg1 = LCD->CTRL;
tmp_reg2 = LCD->CTRL2;
tmp_reg1 &= ~(LCD_CTRL_TYPE\
|LCD_CTRL_DRV\
|LCD_CTRL_FRQ);
tmp_reg1 |= (InitStruct->Type\
|InitStruct->Drv\
|InitStruct->FRQ);
tmp_reg2 &= ~(LCD_CTRL2_SWPR\
|LCD_CTRL2_FBMODE\
|LCD_CTRL2_BKFILL);
tmp_reg2 |= ((InitStruct->SWPR << 8)\
|InitStruct->FBMODE\
|InitStruct->BKFILL);
LCD->CTRL = tmp_reg1;
LCD->CTRL2 = tmp_reg2;
}
/**
* @brief Fills each LCD_InitStruct member with its default value.
* @param LCD_InitStruct: pointer to an LCD_InitType structure which will be initialized.
* @retval None
*/
void LCD_StructInit(LCD_InitType *LCD_InitStruct)
{
/*--------------- Reset LCD init structure parameters values ---------------*/
/* Initialize the BKFILL member */
LCD_InitStruct->BKFILL = LCD_BKFILL_0;
/* Initialize the Drv member */
LCD_InitStruct->Drv = LCD_DRV_300;
/* Initialize the FBMODE member */
LCD_InitStruct->FBMODE = LCD_FBMODE_BUFA;
/* Initialize the FRQ member */
LCD_InitStruct->FRQ = LCD_FRQ_64H;
/* Initialize the SWPR member */
LCD_InitStruct->SWPR = 0;
/* Initialize the Type member */
LCD_InitStruct->Type = LCD_TYPE_4COM;
}
/**
* @brief Initializes the LCD registers to their default reset values.
* @param None
* @retval None
*/
void LCD_DeInit(void)
{
LCD->CTRL &= ~LCD_CTRL_EN;
LCD->CTRL = LCD_CTRL_RSTValue;
LCD->CTRL2 = LCD_CTRL2_RSTValue;
LCD->SEGCTRL0 = LCD_SEGCTRL0_RSTValue;
LCD->SEGCTRL1 = LCD_SEGCTRL1_RSTValue;
LCD->SEGCTRL2 = LCD_SEGCTRL2_RSTValue;
}
/**
* @brief Enables or disables LCD controller.
* @param IOInitType: LCD SEG and COM configuration.
SegCtrl0:
SegCtrl1:
0~0xFFFFFFFF
SegCtrl2:
0~0xFFFF
COMMode:
LCD_TYPE_4COM
LCD_TYPE_6COM
LCD_TYPE_8COM
NewState:
ENABLE
DISABLE
* @retval None
*/
void LCD_Cmd(LCD_IOInitType *IOInitType, uint32_t NewState)
{
/* Check parameters */
assert_parameters(IS_FUNCTIONAL_STATE(NewState));
assert_parameters(IS_LCD_COMMOD(IOInitType->COMMode));
if (NewState == ENABLE)
{
LCD->SEGCTRL0 = IOInitType->SegCtrl0;
LCD->SEGCTRL1 = IOInitType->SegCtrl1;
LCD->SEGCTRL2 = IOInitType->SegCtrl2;
/* COMs' IO configuration : forbidden */
*lcd_comio[0].GPIO |= lcd_comio[0].Pin;
*(lcd_comio[0].GPIO+1) &= ~lcd_comio[0].Pin;
*lcd_comio[1].GPIO |= lcd_comio[1].Pin;
*(lcd_comio[1].GPIO+1) &= ~lcd_comio[1].Pin;
*lcd_comio[2].GPIO |= lcd_comio[2].Pin;
*(lcd_comio[2].GPIO+1) &= ~lcd_comio[2].Pin;
*lcd_comio[3].GPIO |= lcd_comio[3].Pin;
*(lcd_comio[3].GPIO+1) &= ~lcd_comio[3].Pin;
if (IOInitType->COMMode & 2UL)
{
*lcd_comio[4].GPIO |= lcd_comio[4].Pin;
*(lcd_comio[4].GPIO+1) &= ~lcd_comio[4].Pin;
*lcd_comio[5].GPIO |= lcd_comio[5].Pin;
*(lcd_comio[5].GPIO+1) &= ~lcd_comio[5].Pin;
}
if (IOInitType->COMMode & 4UL)
{
*lcd_comio[6].GPIO |= lcd_comio[6].Pin;
*(lcd_comio[6].GPIO+1) &= ~lcd_comio[6].Pin;
*lcd_comio[7].GPIO |= lcd_comio[7].Pin;
*(lcd_comio[7].GPIO+1) &= ~lcd_comio[7].Pin;
}
/* Enable LCD */
LCD->CTRL |= LCD_CTRL_EN;
}
else
{
/* Disable LCD */
LCD->CTRL &= ~LCD_CTRL_EN;
LCD->SEGCTRL0 = IOInitType->SegCtrl0;
LCD->SEGCTRL1 = IOInitType->SegCtrl1;
LCD->SEGCTRL2 = IOInitType->SegCtrl2;
/* COMs' IO configuration : ouput low */
*(lcd_comio[0].GPIO+2) &= ~lcd_comio[0].Pin;
*lcd_comio[0].GPIO &= ~lcd_comio[0].Pin;
*(lcd_comio[1].GPIO+2) &= ~lcd_comio[1].Pin;
*lcd_comio[1].GPIO &= ~lcd_comio[1].Pin;
*(lcd_comio[2].GPIO+2) &= ~lcd_comio[2].Pin;
*lcd_comio[2].GPIO &= ~lcd_comio[2].Pin;
*(lcd_comio[3].GPIO+2) &= ~lcd_comio[3].Pin;
*lcd_comio[3].GPIO &= ~lcd_comio[3].Pin;
if (IOInitType->COMMode & 2UL)
{
*(lcd_comio[4].GPIO+2) &= ~lcd_comio[4].Pin;
*lcd_comio[4].GPIO &= ~lcd_comio[4].Pin;
*(lcd_comio[5].GPIO+2) &= ~lcd_comio[5].Pin;
*lcd_comio[5].GPIO &= ~lcd_comio[5].Pin;
}
if (IOInitType->COMMode & 4UL)
{
*(lcd_comio[6].GPIO+2) &= ~lcd_comio[6].Pin;
*lcd_comio[6].GPIO &= ~lcd_comio[6].Pin;
*(lcd_comio[7].GPIO+2) &= ~lcd_comio[7].Pin;
*lcd_comio[7].GPIO &= ~lcd_comio[7].Pin;
}
}
}
/**
* @brief Configures LCD BIAS mode.
* @param BiasSelection:
LCD_BMODE_DIV3
LCD_BMODE_DIV4
* @retval None
*/
void LCD_BiasModeConfig(uint32_t BiasSelection)
{
uint32_t tmp;
assert_parameters(IS_LCD_BMODE(BiasSelection));
tmp = ANA->REG6;
tmp &= ~ANA_REG6_LCDBMODE;
tmp |= BiasSelection;
ANA->REG6 = tmp;
}
/*********************************** END OF FILE ******************************/
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