hel_lcd.c File Reference

Board Support LCD for microcontroller STM32. More...

#include "bsp.h"
#include "hel_lcd.h"

Functions
uint8_t	HEL_LCD_Init (LCD_HandleTypeDef *hlcd)
	Function to initialize the LCD.
__weak void	HEL_LCD_MspInit (LCD_HandleTypeDef *hlcd)
	Sub-initialization interface for the pins used by the LCD.
uint8_t	HEL_LCD_Command (LCD_HandleTypeDef *hlcd, uint8_t cmd)
	Function to send a command to the LCD.
uint8_t	HEL_LCD_Data (LCD_HandleTypeDef *hlcd, uint8_t data)
	Function to send a character to be displayed on the LCD using the SPI.
uint8_t	HEL_LCD_String (LCD_HandleTypeDef *hlcd, char *str)
	Function to send a string of characters to the LCD.
uint8_t	HEL_LCD_SetCursor (LCD_HandleTypeDef *hlcd, uint8_t row, uint8_t col)
	Function to locate the LCD cursor.
void	HEL_LCD_Backlight (LCD_HandleTypeDef *hlcd, uint8_t state)
	Function to control the LCD backlight.
uint8_t	HEL_LCD_Contrast (LCD_HandleTypeDef *hlcd, uint8_t contrast)
	Function to control the contrast level of the LCD.

Detailed Description

Board Support LCD for microcontroller STM32.

File provides the neccesary drivers, libraries, and configurations for the LCD.

Function Documentation

HEL_LCD_Backlight()

void HEL_LCD_Backlight	(	LCD_HandleTypeDef *	hlcd,
		uint8_t	state )

Function to control the LCD backlight.

Parameters

[out]	hlcd	LCD Handler.
[in]	state	Describe the intensity.

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HEL_LCD_Command()

uint8_t HEL_LCD_Command	(	LCD_HandleTypeDef *	hlcd,
		uint8_t	cmd )

Function to send a command to the LCD.

The function must wait as long as necessary for the command to be accepted by the LCD .

Parameters

[out]	hlcd	LCD Handler.
[in]	cmd	8-bit Command.

Return values

value

Returns an indication of a successful operation or not.

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HEL_LCD_Contrast()

uint8_t HEL_LCD_Contrast	(	LCD_HandleTypeDef *	hlcd,
		uint8_t	contrast )

Function to control the contrast level of the LCD.

Parameters

[out]	hlcd	LCD Handler.
[in]	contrast	Describe the contrast, 0 to 63.

Return values

value

Returns an indication of a successful operation or not.

HEL_LCD_Data()

uint8_t HEL_LCD_Data	(	LCD_HandleTypeDef *	hlcd,
		uint8_t	data )

Function to send a character to be displayed on the LCD using the SPI.

Parameters

[out]	hlcd	LCD Handler.
[in]	data	8-bit Command.

Return values

value

Returns an indication of a successful operation or not.

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HEL_LCD_Init()

uint8_t HEL_LCD_Init

(

LCD_HandleTypeDef *

hlcd

)

Function to initialize the LCD.

Commands to sent for SPI communication between the LCD and the microcontroller.

Parameters

[in]

hlcd

Pointer to Lcd handler.

Return values

value

Returns an indication of a successful operation or not.

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HEL_LCD_MspInit()

__weak void HEL_LCD_MspInit

(

LCD_HandleTypeDef *

hlcd

)

Sub-initialization interface for the pins used by the LCD.

Parameters

[out]

hlcd

LCD Handler.

HEL_LCD_SetCursor()

uint8_t HEL_LCD_SetCursor	(	LCD_HandleTypeDef *	hlcd,
		uint8_t	row,
		uint8_t	col )

Function to locate the LCD cursor.

Parameters

[out]	hlcd	LCD Handler.
[in]	row	Value 0 to 1.
[in]	col	Value 0 to 15.

Return values

value

Returns an indication of a successful operation or not.

HEL_LCD_String()

uint8_t HEL_LCD_String	(	LCD_HandleTypeDef *	hlcd,
		char *	str )

Function to send a string of characters to the LCD.

Parameters

[out]	hlcd	LCD Handler.
[out]	str	String.

Return values

value

Returns an indication of a successful operation or not.