hel_lcd.h

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#ifndef HEL_LCD_H_
#define HEL_LCD_H_

#define LCD_OFF                0u 
#define LCD_ON                 1u 
#define LCD_TOGGLE             2u 
 
 
#define ONE_MILISECOND         1u 
 
#define CLEAR_SCREEN           0 
#define ENTRY_MODE             1 
#define DISPLAY_ON             2 
#define INTERNAL_OSC_FREQUENCY 3 
#define WAKE_UP                4 
#define FUNCION_SET            5 
#define POWER_CONTROL          6 
#define FOLLOWER_CONTROL       7 
#define CONSTRAST              8 

typedef struct _LCD_HandleTypeDef
{
 
    SPI_HandleTypeDef *SpiHandler; 
    GPIO_TypeDef *RstPort;         
    uint32_t RstPin;               
    GPIO_TypeDef *RsPort;          
    uint32_t RsPin;                
    GPIO_TypeDef *CsPort;          
    uint32_t CsPin;                
    GPIO_TypeDef *BklPort;         
    uint32_t BklPin;               
 
} LCD_HandleTypeDef;
 
/*Prototype of LCD's functions*/
extern uint8_t HEL_LCD_Init( LCD_HandleTypeDef *hlcd );
extern void HEL_LCD_MspInit( LCD_HandleTypeDef *hlcd );
extern uint8_t HEL_LCD_Command( LCD_HandleTypeDef *hlcd, uint8_t cmd );
extern uint8_t HEL_LCD_Data( LCD_HandleTypeDef *hlcd, uint8_t data );
extern uint8_t HEL_LCD_String( LCD_HandleTypeDef *hlcd, char *str );
extern uint8_t HEL_LCD_SetCursor( LCD_HandleTypeDef *hlcd, uint8_t row, uint8_t col );
extern void HEL_LCD_Backlight( LCD_HandleTypeDef *hlcd, uint8_t state );
extern uint8_t HEL_LCD_Contrast( LCD_HandleTypeDef *hlcd, uint8_t contrast );
 
#endif