Linux I2C driver analysis 4 - GPIO analog I2C

I. Introduction

        In embedded development, due to the limited I2C interface of the chip, or for the convenience of the hardware drawing board, we need to use ordinary GPIO to simulate the I2C interface. For such needs, Linux-2.6.x already has related codes, and Linux-3.x has standard kernel options to support this function. The kernel code is located in linux_kernel/drivers/i2c/busses/i2c-gpio.c, This article mainly introduces how to use the i2c-gpio module. The kernel used in this article is linux-3.18.45, and the CPU is MT7620.

2. Detailed steps

1. Enable kernel options

        Turn on the CONFIG_I2C_GPIO option. The example is as follows

CONFIG_I2C_GPIO:
                                                                                                                                                                                                                
This is a very simple bitbanging I2C driver utilizing the                                                                                                                                                                           
arch-neutral GPIO API to control the SCL and SDA lines.    
                                                                                                                                                                         
Symbol: I2C_GPIO [=y]                                                                                                                                                                                                               
Type  : tristate                                                                                                                                                                                                                    
Prompt: GPIO-based bitbanging I2C                                                                                                                                                                                                   
  Location:                                                                                                                                                                                                                         
    -> Device Drivers                                                                                                                                                                                                               
      -> I2C support                                                                                                                                                                                                                
        -> I2C support (I2C [=y])                                                                                                                                                                                                   
          -> I2C Hardware Bus support                                                                                                                                                                                               
  Defined at drivers/i2c/busses/Kconfig:497                                                                                                                                                                                         
  Depends on: I2C [=y] && HAS_IOMEM [=y] && GPIOLIB [=y]                                                                                                                                                                            

2. Set the pin used as a normal GPIO

        In this example, the pins I use are: MDIO(GPIO#22) - SDA, MDC(GPIO#23) - SCL. Therefore, you need to set the MDIO interface multiplexing mode of MT7620 to ordinary GPIO first, and modify the device tree file. The example is as follows:

pinctrl {
		state_default: pinctrl0 {
			default {
				ralink,group = "pa", "spi refclk", "wdt", "uartf", "nd_sd", "mdio", "i2c";
				ralink,function = "gpio";
			};
		};
		
		i2c_pins: i2c_pins {
			i2c_pins {
					ralink,group = "i2c";
					ralink,function = "i2c";
			};
		};
	};

        Note : mdio should be added to ralink and group, which means that mdio is used as a normal GPIO.

3. Write a device tree to describe the i2c-gpio device

        The GPIO used is described above, here is an example directly, as follows

i2c-gpio {
		compatible = "i2c-gpio";
		gpios = <&gpio0 22 0 /* sda */
			&gpio0 23 0 /* scl */
		>;
		i2c-gpio,sda-open-drain;
		i2c-gpio,scl-open-drain;
		i2c-gpio,delay-us = <2>;    /* ~100 kHz */
		#address-cells = <1>;
		#size-cells = <0>;

		oled {
			compatible = "oled0.98";
			reg = <0x3c>;
		};
	};

gpios : Indicates which GPIOs are used by SDA and SCL respectively.

i2c-gpio,sda-open-drain : SDA pin is set to open drain

i2c-gpio,scl-open-drain : SCL pin is set to open drain

i2c-gpio,delay-us : Specifies the I2C interface rate.  

oled : Indicates the device connected to the bus, a 0.98-inch oled.

Device tree writing can refer to linux-3.18.45/Documentation/devicetree/bindings/i2c/i2c-gpio.txt.

4. Write the driver

        The driver directly uses the driver used in the previous blog, the example is as follows:

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/fs.h>
 
static int major;
static struct class *class;
static struct i2c_client *at24c02_client; 
	
ssize_t at24c02_read(struct file *file, char __user *buf, size_t size, loff_t *offset)
{
	unsigned char addr, data;
 
	copy_from_user(&addr, buf, 1);
	data = i2c_smbus_read_byte_data(at24c02_client, addr);
	copy_to_user(buf, &data, 1);
 
	return 1;
}
 
ssize_t at24c02_write(struct file *file, const char __user *buf, size_t size, loff_t *offset)
{
	unsigned char ker_buf[1024] = "";
	unsigned char addr, cmd;
	unsigned char data[1024] = ""; 
 
	copy_from_user(ker_buf, buf, size);
	cmd = ker_buf[0];
	
	if (0 == cmd) /* 0 - cmd, 1 - data */
	{
		i2c_smbus_write_byte_data(at24c02_client, 0x00, *(ker_buf + 1));
	}
	else
	{
		i2c_smbus_write_byte_data(at24c02_client, 0x40, *(ker_buf + 1));
	}
}
 
 
struct file_operations i2c_fops = {
	.owner = THIS_MODULE,
	.read  = at24c02_read,
	.write = at24c02_write, 
};
 
static int i2c_drv_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
	printk("i2c client %s, id %ld probed\n", client->name, id->driver_data);
	at24c02_client = client;
	
	major = register_chrdev(0, "at24c02", &i2c_fops);
	if (major > 0)
	{
		class = class_create(THIS_MODULE, "at24c02");
		if (class)
		{
			device_create(class, NULL, MKDEV(major, 0), NULL, "at24c02");
		}
	}	
	
	return 0;
}
 
static int i2c_drv_remove(struct i2c_client *client)
{
	printk("i2c client %s removed\n", client->name);
	device_destroy(class, MKDEV(major, 0));
	class_destroy(class);
	unregister_chrdev(major, "at24c02");
	return 0;
}
 
static const struct i2c_device_id i2c_dev_id[] = {
	{ "oled0.98", 0x3c },
	{ },
};
 
 
static struct i2c_driver i2c_drv = {
	.probe		= i2c_drv_probe,
	.remove		= i2c_drv_remove,
	.id_table	= i2c_dev_id,
	.driver 	= {
		.name = "oled",
		.owner = THIS_MODULE,
	},
};
		
static int i2c_driver_init(void)
{
	i2c_add_driver(&i2c_drv);
 
    return 0;
}
 
 
void i2c_driver_exit(void)
{
	i2c_del_driver(&i2c_drv);
		
    return;
}
 
module_init(i2c_driver_init);
module_exit(i2c_driver_exit);
MODULE_LICENSE("GPL");
 

5. Test procedure

        The test program also refers to the blog written before, as follows:

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
 
 
#define OLED_WRITE_ADDR    0x78
#define SSD1306_WIDTH  128
#define SSD1306_HEIGHT 64
#define WRITE_CMD      			 0X00
#define WRITE_DATA     			 0X40
 
#define CONTROL_TYPE    0x00
 
#define I2C_OLED_MASTER_NUM             I2C_NUM_0
 
 
#define WRITE_BIT                          I2C_MASTER_WRITE /*!< I2C master write */
#define READ_BIT                           I2C_MASTER_READ  /*!< I2C master read */
#define ACK_CHECK_EN                       0x1              /*!< I2C master will check ack from slave*/
#define ACK_CHECK_DIS                      0x0              /*!< I2C master will not check ack from slave */
#define ACK_VAL                            0x0              /*!< I2C ack value */
#define NACK_VAL                           0x1              /*!< I2C nack value */
 
 
#define I2C_OLED_MASTER_SCL_IO          22             
#define I2C_OLED_MASTER_SDA_IO          21  
 
static uint8_t g_oled_buffer1[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = {0};
 
uint8_t g_oled_buffer2[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = {0};
 
static uint8_t s1[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = 
{
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,
    0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,0x07,0xC9,0xF8,0xFE,0x3E,0x0F,
    0x03,0x03,0x01,0x01,0xFF,0xFF,0xFE,0xDF,0x00,0xEB,0xFB,0xF9,0xFB,0xBE,0x0E,0x06,
    0x87,0xFF,0xFC,0xF8,0x01,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,0x7F,0xFF,0xFF,
    0x9F,0x9F,0xDF,0xFF,0xDF,0x4F,0x7F,0x6F,0x6F,0x6F,0x6F,0x6F,0x2F,0x2F,0x2F,0x2F,
    0x2F,0x2F,0x2F,0x2F,0x2F,0x2F,0x2F,0x2F,0x2F,0x6F,0x6F,0x6F,0x6F,0x6F,0xEF,0xFF,
    0xDF,0xDF,0xBF,0x3F,0x3F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0x7F,0x3F,0x3F,0x9F,0xDF,0xCF,0xCF,0x67,0x67,0x37,0x33,0x3F,0x3B,0x1B,0x19,0x0D,
    0x0D,0x0D,0x0C,0x0C,0x06,0x06,0x0E,0x0E,0x06,0x06,0x02,0x03,0x03,0x03,0x00,0x00,
    0x00,0x00,0x00,0x00,0x03,0x03,0x03,0x02,0x02,0x03,0x03,0x07,0x07,0x07,0x06,0x06,
    0x0F,0x0F,0x0D,0x1D,0x78,0x3B,0x37,0x7F,0xE7,0xCF,0xCF,0x1F,0x3F,0x7F,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0x1F,0x87,0xE3,0xF1,0xF9,0x3C,0x1C,0x0F,0x0F,0x0F,0x03,0x01,
    0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x07,0x03,0x03,0x03,0x3F,0xFE,0xFC,0xF0,0xC1,0x07,0x1F,0xFF,0x03,0x01,0xFB,0xFE,
    0xFE,0xCF,0x07,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0E,0xCF,0xFF,0xFF,0x7F,0x00,0x81,0xFF,
    0xFF,0xFF,0x7F,0x3F,0x00,0xCF,0xDF,0xFF,0xFD,0xF0,0xE0,0xE0,0x80,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0xC0,
    0x00,0x00,0x00,0x00,0x00,0xC0,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x1E,0x7F,0xFF,0xF3,0xE0,0xE8,0xFE,0xEF,0x9C,0x3C,0x31,0x73,
    0x67,0x6F,0x4E,0x4F,0x58,0x18,0xB0,0xB0,0xB0,0xE0,0xE0,0xE0,0xC0,0xC0,0xC0,0xC0,
    0xC0,0x80,0x80,0x80,0x80,0x80,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0xC0,0xE0,0xC0,0xC0,0x40,0x60,0x60,0x60,
    0x60,0x30,0x30,0xB0,0xFC,0xB8,0xDC,0xCE,0xEF,0xE7,0xF3,0xF9,0xFD,0xFC,0xFF,0xFF,
    0xFF,0xE0,0xC0,0xCF,0xDF,0xDF,0xD9,0xD8,0xD9,0xDD,0xCF,0xE7,0xE3,0xF1,0xFB,0xFB,
    0xFA,0xFA,0xEE,0xC6,0xDE,0xDE,0xDC,0xD4,0xDC,0xDC,0xDC,0xCE,0xE6,0xE6,0xE7,0x87,
    0x1F,0x3F,0xFF,0xFF,0xF7,0xC7,0xC3,0xC3,0xC3,0xC3,0xC3,0x43,0x63,0x73,0x73,0xF3,
    0x63,0x63,0x63,0x23,0x23,0x23,0x31,0x31,0x31,0x31,0x71,0x31,0xF1,0xF1,0xD1,0xB1,
    0xF1,0xF1,0xFB,0x1F,0x19,0xD9,0xDF,0xDB,0x19,0x09,0x8B,0xFA,0xFC,0x7C,0x1C,0x00,
    0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x80,0xF8,0xFF,0x7F,0x1F,0x01,0xF0,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xF0,0x00,0x37,0x7F,0x7F,0x78,0x00,0x00,0x08,0x1F,0xFF,0xFF,0xC1,0x03,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x47,0x7F,0x7F,
    0x1F,0x0F,0x7F,0x7E,0xF0,0xF1,0x33,0x70,0x78,0x7F,0x1F,0x07,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x70,0x7E,0x7F,0x1F,0x81,0xC0,0xFC,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFE,0xFC,0xFC,0xF8,0xF8,0xF8,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,
    0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xFC,0xFC,0xFC,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
};
 
static uint8_t s2[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = 
{
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,
    0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,0x07,0xC1,0xF8,0xFF,0x3E,0x0F,
    0x03,0x03,0x01,0x01,0xFF,0xFF,0xFE,0x9B,0x00,0xEF,0xFB,0xF9,0xF9,0xBE,0x0E,0x06,
    0xC6,0xFF,0xFC,0xF8,0x01,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,0x3F,0x3F,
    0xBF,0xBF,0x9F,0xDF,0xDF,0x5F,0x5F,0x4F,0x6F,0x6F,0x6F,0x6F,0xEF,0x6F,0x6F,0x6F,
    0x6F,0x6F,0xEF,0x6F,0x6F,0x6F,0x6F,0x6F,0x6F,0x6F,0x6F,0xCF,0xDF,0xDF,0xDF,0x9F,
    0xBF,0x3F,0x7F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0x7F,0x3F,0xFF,0x9F,0xDF,0xCF,0xCF,0x67,0x67,0x37,0x33,0x3F,0x3B,0x1B,0x19,0x0D,
    0x0D,0x0D,0x0C,0x0C,0x06,0x0F,0x0E,0x0E,0x06,0x06,0x02,0x03,0x03,0x03,0x00,0x00,
    0x00,0x00,0x00,0x00,0x03,0x03,0x03,0x02,0x03,0x03,0x03,0x07,0x07,0x07,0x06,0x06,
    0x0F,0x0F,0x0D,0x1C,0x38,0x3B,0x33,0x7F,0xE7,0xCF,0xCF,0x1F,0x3F,0x7F,0xFF,0xFF,
    0xFF,0xFF,0xFF,0x7F,0x0F,0xC7,0xE7,0xF3,0x79,0x7D,0x3C,0x2E,0x06,0x07,0x07,0x03,
    0x01,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x03,0x01,
    0x03,0x03,0x8F,0x8E,0xFE,0xFC,0xF1,0x53,0x07,0xFF,0xFF,0xFF,0x03,0x01,0xFA,0xFE,
    0xFE,0xCF,0x07,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC7,0xFF,0xFF,0x7F,0x20,0x81,0xFF,
    0xFF,0xFF,0xFF,0x40,0x00,0xFF,0xFF,0xF9,0xE0,0xC0,0xC0,0x40,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0xC0,
    0x00,0x00,0x00,0x00,0x00,0xC0,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x18,0x1C,0x7F,0x7F,0xF7,0xF1,0xE1,0xEF,0xEF,0xEF,0x9C,0x3C,0x31,0x73,
    0x67,0x6F,0x4E,0x4E,0xD8,0x98,0xF0,0xF0,0xB0,0xE0,0xE0,0xE0,0xC0,0xC0,0xC0,0xC0,
    0xC0,0x80,0x80,0x80,0x80,0x80,0x80,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0xC0,0xE0,0xC0,0xC0,0x40,0x60,0x60,0x60,
    0x60,0x30,0x30,0xB0,0xBC,0xB8,0xDC,0xCE,0xEF,0xE7,0xF3,0xF9,0xFF,0xFC,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xF8,0xEF,0xCF,0xDF,0xDF,0xD9,0xD9,0xFF,0xDF,0xCF,0xC3,0xF7,0xF6,
    0xF7,0xF6,0xE6,0xE4,0xCC,0xDC,0x9C,0x9C,0xBC,0xBC,0xBC,0x9E,0x8E,0xCE,0xE7,0x83,
    0x1F,0x3F,0xFF,0xFF,0xF6,0x4F,0xC3,0xC3,0xC3,0xC3,0xC3,0x43,0x63,0x73,0x73,0xE3,
    0x63,0x63,0x63,0x23,0x23,0x23,0x31,0x31,0x31,0x31,0x71,0x31,0xF1,0xF1,0xD1,0xB1,
    0xF1,0xF1,0xD9,0x1F,0x19,0xD9,0xD9,0xDB,0x19,0x09,0x8B,0xF8,0xFC,0x7C,0x18,0x00,
    0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x80,0xF8,0xFF,0x7F,0x1F,0x01,0xF0,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0x70,0x00,0x17,0x7F,0x7F,0xF8,0x00,0x00,0x0C,0x1F,0xFF,0xFF,0xC1,0x01,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x47,0x7F,0x7F,
    0x0F,0x0F,0xFF,0x7E,0x70,0x01,0x33,0x78,0x78,0x7F,0x1F,0x07,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x70,0x7E,0x7F,0x1F,0x81,0xC0,0xFC,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFC,0xFC,0xF8,0xF8,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xE0,0xE0,0xE0,0xE0,0xE0,
    0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xF0,0xF0,0xF0,0xF0,0xF0,
    0xF0,0xF0,0xF0,0xF8,0xF8,0xF8,0xFC,0xFC,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 
};
 
static uint8_t s3[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = 
{
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,
    0x1F,0xDF,0xDF,0xCF,0x6F,0x4F,0x4F,0x5F,0xDF,0xDF,0xDF,0xFF,0x9F,0xFF,0xBF,0xBF,
    0x3F,0x3F,0x7F,0x7F,0x3F,0xBF,0xFF,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,
    0xBF,0xBF,0xBF,0x3F,0x3F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,0xCF,0x87,0xF1,0xF9,0x7C,0x1C,0x0E,
    0x1E,0x07,0x83,0x83,0xF7,0xFF,0x7E,0x1E,0xC0,0xE1,0xFB,0x79,0x39,0x1D,0x0C,0x06,
    0xC6,0xF6,0xFE,0x7C,0x19,0x81,0xE3,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xCB,0xCB,0x99,0x9D,0xBD,0xBD,0x35,0x25,0x65,0x65,0x65,0x6D,0x6D,0x6C,
    0xEC,0xCC,0xF9,0x79,0x3B,0x3B,0x1B,0x0F,0x0F,0x0E,0x06,0x06,0x42,0xC3,0x83,0x83,
    0xA3,0xE3,0xC1,0xC1,0x41,0x61,0x61,0x71,0x63,0x23,0x21,0x23,0x01,0x01,0x01,0x01,
    0x03,0x09,0x09,0x09,0x0D,0x0D,0x0D,0x0F,0x3D,0x07,0x07,0x07,0x03,0x02,0x06,0x86,
    0x86,0x8C,0xCD,0xF9,0x79,0x73,0x33,0x33,0x33,0x1B,0x1B,0x19,0x0D,0x0D,0x0D,0x0C,
    0x04,0x06,0x06,0x06,0x06,0x07,0x02,0x02,0x02,0x03,0x03,0x03,0x00,0x00,0x00,0x00,
    0x00,0x00,0x01,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x07,0x06,0x06,0x06,0x06,0x0F,
    0x0F,0x1D,0x19,0x39,0x32,0x77,0xF7,0xDF,0x8F,0x1F,0x3F,0x7F,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x81,0x00,0x3C,0xFF,
    0xFF,0xFF,0x90,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x07,0x03,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0xFC,0xFE,0xCF,
    0x03,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC7,0xFF,0xFF,0x7E,0x00,0x83,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0xFC,
    0xFB,0xF3,0xF3,0xE7,0xE6,0xCC,0xCC,0xD8,0xD8,0xB8,0x98,0xB0,0xB0,0x30,0x20,0x60,
    0xE0,0xE0,0xF0,0xE0,0x60,0x60,0x60,0x60,0x70,0x70,0x60,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x08,0x1C,0x3D,0x7F,0xF7,0xE7,
    0x8E,0x0C,0x1C,0x38,0x38,0x30,0x30,0x20,0xE0,0xE0,0xE0,0xC0,0xC0,0xC0,0xC0,0xC0,
    0xC0,0x80,0x80,0x80,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x80,0x80,0x80,0x80,0xC0,0xC0,0xC0,0xC0,0x40,0x60,0x60,0x60,0x20,0x30,
    0xB0,0xB8,0x98,0xD8,0xDC,0xFE,0xE7,0xF7,0xF7,0xF8,0xF8,0xFE,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xE0,0x00,
    0x1F,0x7F,0xFF,0xFF,0x1F,0x1F,0x3F,0x33,0x73,0xE3,0xE3,0x62,0xE2,0x66,0x46,0x4E,
    0x46,0x46,0x46,0x46,0x44,0x44,0x44,0x46,0x46,0x46,0x46,0x67,0x67,0xE7,0xE7,0xF7,
    0x67,0xE3,0xE3,0xA3,0x33,0x33,0xB1,0x31,0x39,0xF9,0xF8,0xFC,0x78,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0xE8,0xFC,0xFF,0x1F,0x01,0xE0,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,
    0x00,0x00,0x1F,0x3F,0x7F,0x22,0x00,0x00,0x02,0x3F,0xFF,0x7F,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x3F,0x7F,
    0x7C,0x33,0x7F,0x7F,0x7C,0x00,0xC4,0xFC,0x7E,0x3F,0x0F,0x01,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x78,0x7F,0x3F,0x07,0x00,0x18,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFE,0xFE,0xFC,0xFC,0xF8,0xF8,0xF8,0xF8,0xF8,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,
    0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xFC,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xFC,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 
};
 
static uint8_t s4[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = 
{
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0x1F,0x1F,0xCF,0xEF,0xEF,0x6F,0x6F,0x6F,0xEF,0xCF,0x8F,
    0x1F,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,0x1F,0x9F,0xDF,0xDF,0x5F,0xDF,0xDF,0x9F,
    0x1F,0x3F,0xFF,0xFF,0xFF,0xFF,0x7F,0x1F,0x1F,0xC7,0xE7,0xF3,0x71,0x39,0x1C,0x0C,
    0x06,0x86,0xC6,0xE2,0xF2,0xFE,0x3E,0xDE,0xC0,0xE0,0x73,0x3B,0x19,0x39,0x0D,0x8D,
    0xCD,0xE5,0xFD,0x3D,0x3D,0x81,0xC3,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0x7F,0x3F,0x3F,0x9F,0xDF,0xCF,0xEF,0x67,0x67,0x37,0x33,0x13,0x1B,0x1B,0x1B,
    0x09,0x0D,0x0D,0x0D,0x0D,0x04,0x0C,0x1F,0x1F,0x1F,0x00,0x08,0x3B,0x3F,0xBF,0xFF,
    0xCE,0xF6,0x66,0x66,0x76,0x36,0x3C,0x1C,0x1C,0x1F,0x0F,0x0C,0x0C,0x0C,0x07,0x07,
    0x07,0x06,0x0E,0x02,0x02,0x02,0x02,0x02,0x03,0x03,0x03,0x00,0x00,0x00,0x00,0x00,
    0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x06,0x06,0x06,0x06,0x0F,0x0F,0x1F,
    0x1D,0x3D,0x70,0x72,0xF7,0xCF,0xCF,0x1F,0x3F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x01,0x01,
    0xFC,0xFE,0xFF,0x37,0x07,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x28,0xFC,0xFE,0x9E,0x0F,0x0F,0x89,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x01,0xFF,0xFF,0xFF,0x7C,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF8,0xF0,
    0xE7,0xC7,0x9F,0x9F,0xF8,0xB0,0xF0,0xE0,0xE0,0xF0,0xC0,0xE0,0x80,0x80,0x80,0x80,
    0x80,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x03,0x07,0x0F,0x0F,
    0x1C,0x18,0x38,0x30,0xB0,0xA0,0xE0,0xF8,0xE0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0x80,
    0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0xC0,0xF0,0xC0,0xC0,0xC0,0x60,0x70,0x70,0x60,0x60,0x30,0xB0,0xB0,0x98,
    0x98,0xDC,0xCC,0xCE,0xE7,0xF3,0xF1,0xF8,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0x3F,0x01,0xC8,0xFC,0xFF,0x3F,0x1F,0x3F,0x39,0xF1,0xE1,0x63,0xC3,0xCF,0xCF,
    0xCD,0x8D,0x8D,0x89,0x89,0x89,0x89,0x89,0x89,0x89,0x8B,0x88,0x88,0x8C,0xCC,0xCC,
    0xCC,0xC4,0xE6,0xE6,0xE6,0xF3,0x73,0xB1,0xFD,0xF9,0xFB,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x60,0xFC,0xFF,0xFF,0x00,0x00,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0x3F,0x00,0x10,0x7F,0x7F,0x79,0x00,0x00,0x00,0x87,0xFF,0x7F,0x70,0x40,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,
    0xFF,0x7F,0xFE,0xFF,0xFF,0x17,0xE0,0x7F,0x7F,0x1F,0x07,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x33,0x3F,0x7F,0x0F,0x00,0x18,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFC,0xFC,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,
    0xF0,0xF0,0xF0,0xF0,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xFC,0xFC,0xFC,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 
};
 
static uint8_t s5[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = 
{
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,
    0x3F,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,0xBF,0x3F,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,0x1F,0x1F,0xC7,0xE7,0xF3,0x71,0x39,0x1C,0x0C,
    0x06,0x86,0xC6,0xE2,0xF2,0xFE,0x7E,0xDE,0xC0,0xE0,0x73,0x3B,0x19,0x39,0x0D,0x8D,
    0xCD,0xE5,0xFD,0x3D,0x3D,0x81,0xC3,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0x7F,0x3F,0x9F,0xDF,0xDF,0xCF,0xEF,0x67,0x67,0x37,0x33,0x13,0x1B,
    0x3B,0x3B,0x09,0x0D,0x0D,0x0D,0x0D,0x05,0x04,0x3E,0x3E,0x3E,0x0F,0x0F,0xE6,0xE3,
    0xF3,0xF1,0x79,0x7C,0x7C,0x3E,0x3F,0x1F,0x1F,0x1C,0x0C,0x0D,0x0D,0x04,0x04,0x06,
    0x06,0x06,0x0E,0x0A,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x00,0x00,0x00,0x00,0x00,
    0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x06,0x06,0x06,0x06,0x0F,0x0F,0x1F,
    0x1D,0x3D,0x70,0x72,0xF7,0xCF,0xCF,0x1F,0x3F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0x0D,0x09,0xFC,0xFF,0xFF,0x07,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x28,0xFC,0xFE,0x9F,0x0F,0x0F,0x09,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x01,0xFF,0xFF,0xFF,0x7C,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xF8,0xF0,0xE3,0xCF,0x1F,0x1E,0xB8,0xF0,0xF0,0x60,0x60,0xC0,0xC0,0xC0,0x80,0x80,
    0xC0,0xC0,0x80,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x07,0x07,0x03,0x07,0x0F,0x0C,
    0x1C,0x18,0x38,0x30,0x30,0xA0,0xE8,0xF8,0xE0,0xE0,0xC0,0xC0,0xF0,0xE0,0xC0,0x80,
    0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0xC0,0xF0,0xC0,0xC0,0xC0,0x60,0x70,0x70,0x70,0x60,0x30,0xB0,0xB0,0x98,
    0x98,0xFC,0xCC,0xCE,0xE7,0xF3,0xF1,0xF8,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0x3F,0x0D,0xC8,0xFC,0xFF,0x3F,0x3F,0x3F,0x39,0xF1,0xE1,0x63,0xC3,0xCF,0xCE,
    0xCD,0x8D,0x8D,0x89,0x89,0x89,0x89,0x89,0x89,0x89,0x89,0x89,0x89,0x8C,0xCC,0xCC,
    0xCC,0xC4,0xE6,0xE6,0xE6,0xF3,0x73,0xB1,0xFD,0xFD,0xFB,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0xE0,0xFC,0xFF,0xFF,0x00,0x00,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0x3F,0x00,0x30,0x7F,0xFF,0x79,0x00,0x00,0x80,0x87,0xFF,0x7F,0xF0,0xC0,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,
    0xFF,0x7F,0x7E,0xFF,0xFF,0xF7,0xE0,0xFF,0x7F,0x1F,0x0F,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x37,0x3F,0x3F,0x1F,0x00,0x18,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFE,0xFE,0xFC,0xFC,0xF8,0xF8,0xF8,0xF8,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xE0,
    0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,
    0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xFC,0xFC,0xFC,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 
};
 
static uint8_t s6[SSD1306_WIDTH * SSD1306_HEIGHT / 8] = 
{
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,
    0x1F,0x8F,0xE7,0xE7,0x77,0x77,0x17,0x7F,0xF7,0xF7,0xE7,0x7F,0x3F,0x7F,0x7F,0x7F,
    0x0F,0x0F,0xE3,0xF3,0xF9,0x1D,0x9D,0xED,0xED,0xFD,0xFD,0x9D,0x83,0x83,0xBF,0xBF,
    0xBF,0xBF,0xBF,0x3F,0x3F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,0xCF,0x87,0xF1,0xF9,0x7C,0x1C,0x0E,
    0x1E,0x17,0x83,0x83,0xF7,0xFF,0x7F,0x1E,0xC0,0xE1,0xFB,0xF9,0x3B,0x1F,0x0C,0x06,
    0xC6,0xF6,0xFE,0x7C,0x19,0x81,0xE3,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3F,0x10,
    0xC0,0xCF,0xFF,0x7F,0x3C,0x18,0x18,0x0C,0x0F,0x0F,0x07,0x06,0x0E,0xC3,0x83,0x83,
    0x83,0xE3,0xC1,0xC1,0x41,0x61,0x61,0x71,0x63,0x21,0x21,0x21,0x01,0x01,0x03,0x01,
    0x03,0x09,0x09,0x09,0x0D,0x0D,0x0D,0x0F,0x3D,0x07,0x07,0x07,0x03,0x02,0x06,0x87,
    0x86,0x8C,0xCD,0xF9,0x79,0x73,0x33,0x33,0x33,0x1B,0x1B,0x19,0x0D,0x0D,0x0D,0x0E,
    0x04,0x06,0x07,0x06,0x06,0x07,0x02,0x02,0x02,0x03,0x03,0x03,0x00,0x00,0x00,0x00,
    0x00,0x00,0x01,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x07,0x06,0x06,0x06,0x06,0x0F,
    0x0F,0x1D,0x39,0x39,0x32,0x77,0xF7,0xDF,0x8F,0x1F,0x3F,0x7F,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x81,0x00,0x3C,0xFF,
    0xFF,0xFF,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x07,0x03,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0xFC,0xFE,0xCF,
    0x03,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC7,0xFF,0xFF,0x7E,0x00,0x83,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0xFC,
    0xFB,0xF3,0xF3,0xE7,0xE6,0xCC,0xCC,0xD8,0xD8,0xB8,0xB8,0xB0,0xB0,0x30,0x20,0x60,
    0xE0,0xE0,0xF0,0xF0,0x60,0x60,0x60,0x60,0x70,0x70,0x60,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x08,0x1C,0x3E,0x7F,0xF7,0xE7,
    0x8E,0x0C,0x1C,0x18,0x38,0x30,0x30,0xE0,0xE0,0xE0,0xE0,0xC0,0xC0,0xC0,0xC0,0xC0,
    0xC0,0x80,0x80,0x80,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x80,0x80,0x80,0x80,0xC0,0xC0,0xC0,0xC0,0x40,0x78,0x60,0x60,0x20,0x30,
    0xB0,0xB8,0x98,0xD8,0xCC,0xEE,0xE7,0xF7,0xF3,0xF8,0xF8,0xFE,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xE0,0x00,
    0x1F,0x7F,0xFF,0xFF,0x1F,0x1F,0x3F,0x33,0x73,0xE3,0xE3,0x63,0xE3,0x66,0x46,0x4E,
    0x46,0x46,0x46,0x46,0x44,0x44,0x44,0x46,0x46,0x46,0x46,0x67,0x67,0xE7,0xE7,0xF7,
    0x67,0xE3,0xE3,0xA3,0x33,0x33,0xB1,0x31,0x39,0xF9,0xF8,0xFC,0x78,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0xE8,0xFC,0xFF,0x1F,0x03,0xE2,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x1F,
    0x00,0x00,0x3F,0x3F,0x3F,0x00,0x00,0x00,0x02,0x3F,0xFF,0x7F,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x3F,0x7F,
    0x7C,0x33,0x7F,0x7F,0x3C,0x10,0xC0,0x78,0x7E,0x7F,0x1F,0x01,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x40,0x78,0x7F,0x7F,0x07,0x04,0x18,0x3F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFE,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,
    0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,
    0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,0xF0,
    0xF0,0xF0,0xF0,0xF0,0xF0,0xF8,0xF8,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 
};
 
static uint8_t g_oled_buffer[6][SSD1306_WIDTH * SSD1306_HEIGHT / 8];
 
int i2c_fd = 0;
 
char addr = 0x78;
 
 
int i2c_init(void)
{
    i2c_fd = open("/dev/at24c02", O_RDWR);
    if (i2c_fd < 0)
    {
		return -1;
    }
}
 
int oled_read_cmd(uint8_t *data)
{
    return read(i2c_fd, data, 1);
}
 
int oled_write_cmd(uint8_t data)
{
	char buf[2] = "";
 
	buf[0] = 0x00;
	buf[1] = data;
 
    return write(i2c_fd, buf, 2);
}
 
int oled_write_data(uint8_t data)
{
	char buf[2] = "";
 
	buf[0] = 0x01;
	buf[1] = data;
 
    return write(i2c_fd, buf, 2);
}
 
 
int oled_write_long_data(uint8_t *data, uint16_t len)
{
	int i;
 
	for (i = 0; i < len; i++)
	{
		oled_write_data(*(data + i));
	}
 
	return 0;
}
 
 
void oled_update_screen(uint8_t *buffer)
{
    uint8_t line_index;
    for(line_index=0    ;   line_index<8   ;  line_index++)
    {
        oled_write_cmd(0xb0+line_index);
        oled_write_cmd(0x00);
        oled_write_cmd(0x10);
 
        oled_write_long_data(&buffer[SSD1306_WIDTH * line_index],SSD1306_WIDTH);
    }
}
 
void oled_update_screen1(void)
{
    uint8_t line_index;
    for(line_index=0; line_index<8; line_index++)
    {
        oled_write_cmd(0xb0+line_index);
        oled_write_cmd(0x00);
        oled_write_cmd(0x10);
 
        oled_write_long_data(&g_oled_buffer1[SSD1306_WIDTH * line_index],SSD1306_WIDTH);
    }
}
 
void oled_clear(void)
{
    //清0缓存
    memset(g_oled_buffer1,0x00,sizeof(g_oled_buffer1));
    oled_update_screen1();
}
 
int oled_init(void)
{
    oled_write_cmd(0xAE);
    oled_write_cmd(0XD5);
    oled_write_cmd(0X80);
    oled_write_cmd(0XA8);
    oled_write_cmd(0X3F);
    oled_write_cmd(0XD3);
    oled_write_cmd(0X00);
    oled_write_cmd(0X40);
    oled_write_cmd(0XA1);
    oled_write_cmd(0XC8);
    oled_write_cmd(0XDA);
    oled_write_cmd(0X12);
    oled_write_cmd(0X81);
    oled_write_cmd(0XCF);
    oled_write_cmd(0XD9);
    oled_write_cmd(0XF1);
    oled_write_cmd(0XDB);
    oled_write_cmd(0X30);
    oled_write_cmd(0xA4);
    oled_write_cmd(0xA6);
    oled_write_cmd(0x8D);
    oled_write_cmd(0x14);
    oled_write_cmd(0xAF);
 
    oled_clear();
 
    return 0;
}
 
int main(int argc, char *argv[])
{
    uint8_t data = 0;
    uint32_t i = 0;
 
    memcpy(g_oled_buffer[0], s1, sizeof(s1));
    memcpy(g_oled_buffer[1], s2, sizeof(s2));
    memcpy(g_oled_buffer[2], s3, sizeof(s3));
    memcpy(g_oled_buffer[3], s4, sizeof(s4));
    memcpy(g_oled_buffer[4], s5, sizeof(s5));
    memcpy(g_oled_buffer[5], s6, sizeof(s6));
 
    i2c_init();
    oled_init();
 
    for (i = 0; i < SSD1306_WIDTH * SSD1306_HEIGHT / 8; i++)
    {
        g_oled_buffer2[i] = g_oled_buffer[i*8];
    }
 
    while(1)
    {
        for (i = 0; i < 6; i++)
        {
            oled_update_screen(g_oled_buffer[i]);
        }
    }
}

6. Effect

 

3. Summary

        This article explains how to open and configure the kernel and device tree, so that the kernel supports GPIO to simulate the I2C bus experiment.