Electronics_Projects_2018/Air_Quality_Sensor_PPD42/resources/MSP-EXP430G2 Software Examples/Source/430BOOST-SHARP96/430BOOST-SHARP96_GrlibExample_G2/LcdDriver/HAL_MSP-EXP430G2_Sharp96x96.c

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//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
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//*****************************************************************************
//
// IMPORTANT NOTE: The following driver file has been modified to store
// the LCD DisplayBuffer on FLASH memory. This is due to the limited amount
// of RAM memory on the MSP430G2553 device.
//
//*****************************************************************************
//*****************************************************************************
//
// HAL_MSP-EXP430G2_Sharp96x96.c
//
//*****************************************************************************
//
//! \addtogroup display_api
//! @{
//
//*****************************************************************************

#include <msp430g2553.h>
#include <stdint.h>
#include "grlib.h"
#include "HAL_MSP-EXP430G2_Sharp96x96.h"


//*****************************************************************************
//
//! Initializes the display driver.
//!
//! This function initializes the Sharp96x96 display. This function
//! configures the GPIO pins used to control the LCD display when the basic
//! GPIO interface is in use. On exit, the LCD has been reset and is ready to
//! receive command and data writes.
//!
//! \return None.
//
//*****************************************************************************
void LCDInit(void)
{
	// Configure:
	// LCD_MOSI_PIN for SPI_MOSI mode

	LCD_MOSI_PORT_SEL1 |= LCD_MOSI_PIN;
	LCD_MOSI_PORT_SEL2 |= LCD_MOSI_PIN;

	// Configure:
	// LCD_SCLK_PIN for SPI_CLK mode
	LCD_SCLK_PORT_SEL1 |= LCD_SCLK_PIN;
	LCD_SCLK_PORT_SEL2 |= LCD_SCLK_PIN;

	// Configure LCD_POWER_PIN as output to supply the LCD and LCD_DISP_PIN
	// as output for DISP
	LCD_POWER_DISP_DIR |= LCD_POWER_PIN + LCD_DISP_PIN;

	// Provide power to LCD and turn on DISP pins
	LCD_POWER_DISP_PORT |= LCD_POWER_PIN + LCD_DISP_PIN;

	// Configure LCD_SCS_PIN as output and clear pin
	LCD_SCS_DIR |= LCD_SCLK_PIN;
	ClearCS();


	// Configure USCIB0 for SPI mode:
	// SPI master,
	// 3-pin SPI,
	// 8-bit data,
	// Data is captured on the first UCLK edge and changed on the following edge
	// SMCLK sources USCI clock
	UCB0CTL0 |= UCCKPH + UCMSB + UCMST + UCSYNC;
	UCB0CTL1 |= UCSSEL_3;
	UCB0BR0 |= 0x08;
	UCB0BR1 = 0;

	// Initialize USCI state machine
	UCB0CTL1 &= ~UCSWRST;

}

//*****************************************************************************
//
//! Initialize DisplayBuffer.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//!
//!	\param ucValue is the foreground color of the buffered data.
//!
//! This function initializes the display buffer and discards any cached data.
//!
//! \return None.
//
//*****************************************************************************

void InitializeDisplayBuffer(void *pvDisplayData, uint8_t ucValue)
{
	uint16_t i=0,j=0;
	uint8_t *pucData = pvDisplayData;

	uint16_t ucSegment = 0;

	UnlockFlashMemory();

	for(i =0; i< LCD_VERTICAL_MAX; i++){
		for(j =0; j< (LCD_HORIZONTAL_MAX>>3); j++){
			if(ucSegment==0 && ClrBlack != ucValue){
				SetFlashAccessRight(ERASE);
				//Dummy write to erase Flash segment
				*pucData=0;

				SetFlashAccessRight(WRT);
			}
			while(FCTL3&BUSY);
			*pucData++ = ucValue;
			ucSegment++;
			if(ucSegment == 512)
				ucSegment = 0;
		}
	}

	FinishMemoryWrite();
}

                                      
//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************