/**************************<lcd_lib.c>******
 *  LCD表示ライブラリ(for AQM0802A)
 **********************************************/
#include "lcd_lib.h"
#include "mcc_generated_files/i2c.h"
#include "mcc_generated_files/mcc.h"

#define LcdAdr    0x3E
#define CONTRAST  0x18        // for 5.0V
//#define CONTRAST  0x30      // for 3.3V
#define BOOST     0x00        // for 5.0V Bon=off
//#define BOOST     0x04      // for 3.3V Bon=on

I2C_MESSAGE_STATUS status;

/*********************************
 *  1文字表示データ出力
 *********************************/
void Lcd_data(unsigned char data)
{
    unsigned char tbuf[2];
    tbuf[0] = 0x40;
    tbuf[1] = data;
    I2C_MasterWrite(tbuf, 2, LcdAdr, &status);
    while(status == I2C_MESSAGE_PENDING);
    __delay_us(30);              //  30usec wait
}

/*******************************
 * １コマンド出力 
 *******************************/
void Lcd_cmd(unsigned char cmd)
{
    unsigned char tbuf[2];
    tbuf[0] = 0x00;
    tbuf[1] = cmd;
    I2C_MasterWrite(tbuf, 2, LcdAdr, &status);
    while(status == I2C_MESSAGE_PENDING);
    /* ClearかHomeか */
    if((cmd == 0x01)||(cmd == 0x02))
        __delay_ms(2);          // 2msec wait
    else
        __delay_us(30);         // 30usec wait
}


/*******************************
 * 初期化関数
 *******************************/
void Lcd_init(void)
{
    __delay_ms(50);           // 50msec wait
    Lcd_cmd(0x38);            // 8bit 2line Normal mode
    Lcd_cmd(0x39);            // 8bit 2line Extend mode
    Lcd_cmd(0x14);            // OSC 183Hz BIAS 1/5
    /* contrast */
    Lcd_cmd(0x70 + (CONTRAST & 0x0F));
    Lcd_cmd(0x58 + BOOST + (CONTRAST >> 4));
    Lcd_cmd(0x6B);            // Follwer 0x62?
    __delay_ms(300);
    Lcd_cmd(0x38);            // Set Normal mode
    Lcd_cmd(0x01);            // Clear Display
    Lcd_cmd(0x0C);            // Display On
}

/******************************
 * 全消去関数
 ******************************/
void Lcd_clear(void)
{
    Lcd_cmd(0x01); 
}

/*****************************
 * 文字列表示関数
 *****************************/
void Lcd_str(const unsigned char* ptr)
{
    while(*ptr != 0)
        Lcd_data(*ptr++);
}