LPC804_e-paper/src/lib_ENS_II1_lcd.c

/*
 * lib_ENS_II1_lcd.c
 *
 *  Created on: 9 oct. 2018
 *  Modified on sept 2019
 *      Author: juton
 */

#include <stdio.h>
#include "fro.h"
#include "rom_api.h"
#include "syscon.h"
#include "swm.h"
#include "i2c.h"
#include "lib_ENS_II1_lcd.h"

void init_lcd(void){

	uint32_t i;
	uint8_t I2CMasterBuffer[BUFSIZE];
	uint32_t I2CWriteLength;

	// Provide main_clk as function clock to I2C0
	LPC_SYSCON->I2C0CLKSEL = FCLKSEL_MAIN_CLK;

	LPC_SYSCON->SYSAHBCLKCTRL0 |= I2C0|SWM;

	//configuration des pins 7 (SDA) et 14 (SCL) en open_drain
	LPC_IOCON->PIO0_7 = 0x000004A0;
	LPC_IOCON->PIO0_14 = 0x000004A0;

	//assignation des pins 7 à SDA et 14 à SCL
	LPC_SWM->PINASSIGN5 = 0xFFFF0E07;

	 // Give I2C0 a reset
	LPC_SYSCON->PRESETCTRL0 &= (I2C0_RST_N);
	LPC_SYSCON->PRESETCTRL0 |= ~(I2C0_RST_N);

	//horloge I2c
	LPC_I2C0->DIV = 1;
    LPC_I2C0->CFG = CFG_MSTENA;

	for(i=0;i<8000;i++);
	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CWriteLength = 1;
	I2CMasterBuffer[0] = LCD_ADDR;
	I2CMasterBuffer[1] = 0x00;
	I2CMasterBuffer[2] = 0x38;		/* configuration value, no change from default */
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CWriteLength = 2;
	I2CMasterBuffer[0] = LCD_ADDR;
	I2CMasterBuffer[1] = 0x00;
	I2CMasterBuffer[2] = 0x39;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x14;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x74;							//contrast
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x54;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x6F;							//follower
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x0E;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x01;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x06;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);

	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CMasterBuffer[2] = 0x02;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);
}

void lcd_puts(char* text_input)
{
	uint8_t I2CMasterBuffer[BUFSIZE];
	uint32_t I2CWriteLength;
	int i=0;
	while(text_input[i]!=0)
	{
		WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
		I2CWriteLength = 2;
		I2CMasterBuffer[0] = LCD_ADDR;
		I2CMasterBuffer[1] = 0x40;
		I2CMasterBuffer[2] = text_input[i];
		I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
		i++;
	}
}

void lcd_putc(char c)
{
	uint8_t I2CMasterBuffer[BUFSIZE];
	uint32_t I2CWriteLength;
	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CWriteLength = 2;
	I2CMasterBuffer[0] = LCD_ADDR;
	I2CMasterBuffer[1] = 0x40;
	I2CMasterBuffer[2] = c;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
}

void lcd_gohome(void){
	uint8_t I2CMasterBuffer[BUFSIZE];
	uint32_t I2CWriteLength,i;
	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CWriteLength = 2;
	I2CMasterBuffer[0] = LCD_ADDR;
	I2CMasterBuffer[1] = 0x0;
	I2CMasterBuffer[2] = 0x02;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
	for(i=0;i<8000;i++);
}

void lcd_position(char ligne, char colonne){
	uint8_t I2CMasterBuffer[BUFSIZE];
	uint32_t I2CWriteLength;
	char cmd;
	if (ligne > 1) ligne=1;
	if (colonne >16) colonne = 16;
	cmd = 0x80+(ligne*0x40)+colonne;
	WaitI2CMasterState(LPC_I2C0, I2C_STAT_MSTST_IDLE); // Wait for the master state to be idle
	I2CWriteLength = 2;
	I2CMasterBuffer[0] = LCD_ADDR;
	I2CMasterBuffer[1] = 0x0;
	I2CMasterBuffer[2] = cmd;
	I2CmasterWrite( I2CMasterBuffer, I2CWriteLength );
}