tuber/doc/OLED_Module_Code/RaspberryPi/c/lib/OLED/OLED_1in3.c

/*****************************************************************************
* | File        :   OLED_1in3.c
* | Author      :   Waveshare team
* | Function    :   1.3inch OLED Drive function
* | Info        :
*----------------
* | This version:   V1.0
* | Date        :   2020-08-13
* | Info        :
* -----------------------------------------------------------------------------
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to  whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
******************************************************************************/
#include "OLED_1in3.h"
#include <stdio.h>


/*******************************************************************************
function:
            Hardware reset
*******************************************************************************/
static void OLED_Reset(void)
{
    OLED_RST_1;
    DEV_Delay_ms(100);
    OLED_RST_0;
    DEV_Delay_ms(100);
    OLED_RST_1;
    DEV_Delay_ms(100);
}

/*******************************************************************************
function:
            Write register address and data
*******************************************************************************/
static void OLED_WriteReg(uint8_t Reg)
{

#if USE_SPI
    OLED_DC_0;
    // OLED_CS_0;
    DEV_SPI_WriteByte(Reg);
    // printf("WriteReg\r\n");  
    // OLED_CS_1;
#elif USE_IIC
    I2C_Write_Byte(Reg,IIC_CMD);
#endif
}

static void OLED_WriteData(uint8_t Data)
{
    
#if USE_SPI
    OLED_DC_1;
    // OLED_CS_0;
    DEV_SPI_WriteByte(Data);
    // printf("WriteData\r\n");
    // OLED_CS_1;
#elif USE_IIC
    I2C_Write_Byte(Data,IIC_RAM);
#endif
}

/*******************************************************************************
function:
		Common register initialization
*******************************************************************************/
static void OLED_InitReg(void)
{
    OLED_WriteReg(0xAE);//--turn off oled panel

    OLED_WriteReg(0x02);//---set low column address
    OLED_WriteReg(0x10);//---set high column address

    OLED_WriteReg(0x40);//--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)
    OLED_WriteReg(0x81);//--set contrast control register
    OLED_WriteReg(0xA0);//--Set SEG/Column Mapping a0/a1
    OLED_WriteReg(0xC0);//Set COM/Row Scan Direction
    OLED_WriteReg(0xA6);//--set normal display a6/a7
    OLED_WriteReg(0xA8);//--set multiplex ratio(1 to 64)
    OLED_WriteReg(0x3F);//--1/64 duty
    OLED_WriteReg(0xD3);//-set display offset    Shift Mapping RAM Counter (0x00~0x3F)
    OLED_WriteReg(0x00);//-not offset
    OLED_WriteReg(0xd5);//--set display clock divide ratio/oscillator frequency
    OLED_WriteReg(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
    OLED_WriteReg(0xD9);//--set pre-charge period
    OLED_WriteReg(0xF1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
    OLED_WriteReg(0xDA);//--set com pins hardware configuration
    OLED_WriteReg(0x12);
    OLED_WriteReg(0xDB);//--set vcomh
    OLED_WriteReg(0x40);//Set VCOM Deselect Level
    OLED_WriteReg(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
    OLED_WriteReg(0x02);//
    OLED_WriteReg(0xA4);// Disable Entire Display On (0xa4/0xa5)
    OLED_WriteReg(0xA6);// Disable Inverse Display On (0xa6/a7)

}

/********************************************************************************
function:
            initialization
********************************************************************************/
void OLED_1IN3_Init()
{
    //Hardware reset
    OLED_Reset();

    //Set the initialization register
    OLED_InitReg();
    DEV_Delay_ms(200);

    //Turn on the OLED display
    OLED_WriteReg(0xaf);
}

/********************************************************************************
function:
			Clear screen
********************************************************************************/
void OLED_1IN3_Clear()
{
    // UWORD Width, Height;
    UWORD i, j;
    // Width = (OLED_1IN3_WIDTH % 8 == 0)? (OLED_1IN3_WIDTH / 8 ): (OLED_1IN3_WIDTH / 8 + 1);
    // Height = OLED_1IN3_HEIGHT; 
    for (i=0; i<8; i++) {
        /* set page address */
        OLED_WriteReg(0xB0 + i);
        /* set low column address */
        OLED_WriteReg(0x02);
        /* set high column address */
        OLED_WriteReg(0x10);
        for(j=0; j<128; j++) {
            /* write data */
            OLED_WriteData(0x00);  
        }

    }
}

/********************************************************************************
function:	Update memory to OLED
********************************************************************************/
void OLED_1IN3_Display(UBYTE *Image)
{
    UWORD page, column, temp;

    for (page=0; page<8; page++) {
        /* set page address */
        OLED_WriteReg(0xB0 + page);
        /* set low column address */
        OLED_WriteReg(0x02);
        /* set high column address */
        OLED_WriteReg(0x10);

        /* write data */
        for(column=0; column<128; column++) {
            temp = Image[(7-page) + column*8];
            OLED_WriteData(temp);
        }       
    }
}