【匠芯创D133CBS】I2C驱动OLED显示屏

TL-LED 发表于 2024-9-11 23:33

本帖最后由 TL-LED 于 2024-9-11 23:33 编辑

测试I2C接口，驱动OLED显示屏。

 

一、硬件电路

 

电路板上方面外部连接的I2C端口就是J11插件对应的I2C0。

1.1、I2C0接口电路图部分



1.2、硬件连接图



 

二、配置I2C

 

2.1、打开I2C0



 

2.2、使能I2C驱动调试和例程





 

三、配置第三方库

 

3.1、选择SSD1306库



 

3.2、选择I2C0和使能测试例程



 

选择完成后，执行命令pkgs --update跟新库文件

下载完成后，会在packages目录下找到源文件



 

四、程序

 

4.1、ssd1306_tests.c

<pre>
<code>/*
* Copyright (c) 2020, RudyLo <luhuadong@163.com>
*
* SPDX-License-Identifier: MIT License
*
* Change Logs:
* Date Author Notes
* 2020-11-15 luhuadong the first version
*/

#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>

#include <string.h>
#include <stdio.h>
#include "ssd1306.h"
#include "ssd1306_tests.h"

void ssd1306_TestBorder()
{
ssd1306_Fill(Black);

uint32_t start = rt_tick_get();
uint32_t end = start;
uint8_t x = 0;
uint8_t y = 0;
do {
 ssd1306_DrawPixel(x, y, Black);

 if((y == 0) && (x < 127))
 x++;
 else if((x == 127) && (y < 63))
 y++;
 else if((y == 63) && (x > 0))
 x--;
 else
 y--;

 ssd1306_DrawPixel(x, y, White);
 ssd1306_UpdateScreen();

 rt_thread_mdelay(5);
 end = rt_tick_get();
} while((end - start) < 8000);

rt_thread_mdelay(1000);
}

void ssd1306_TestFonts()
{
ssd1306_Fill(Black);
ssd1306_SetCursor(2, 0);
ssd1306_WriteString("Font 16x26", Font_16x26, White);
ssd1306_SetCursor(2, 26);
ssd1306_WriteString("Font 11x18", Font_11x18, White);
ssd1306_SetCursor(2, 26+18);
ssd1306_WriteString("Font 7x10", Font_7x10, White);
ssd1306_SetCursor(2, 26+18+10);
ssd1306_WriteString("Font 6x8", Font_6x8, White);
ssd1306_UpdateScreen();
}

void ssd1306_TestFPS()
{
ssd1306_Fill(White);

uint32_t start = rt_tick_get();
uint32_t end = start;
int fps = 0;
char message[] = "ABCDEFGHIJK";

ssd1306_SetCursor(2,0);
ssd1306_WriteString("Testing...", Font_11x18, Black);

do {
 ssd1306_SetCursor(2, 18);
 ssd1306_WriteString(message, Font_11x18, Black);
 ssd1306_UpdateScreen();

 char ch = message;
 memmove(message, message+1, sizeof(message)-2);
 message = ch;

 fps++;
 end = rt_tick_get();
} while((end - start) < 5000);

rt_thread_mdelay(1000);

char buff;
fps = (float)fps / ((end - start) / 1000.0);
snprintf(buff, sizeof(buff), "~%d FPS", fps);

ssd1306_Fill(White);
ssd1306_SetCursor(2, 18);
ssd1306_WriteString(buff, Font_11x18, Black);
ssd1306_UpdateScreen();
}

void ssd1306_TestLine()
{
ssd1306_Line(1,1,SSD1306_WIDTH - 1,SSD1306_HEIGHT - 1,White);
ssd1306_Line(SSD1306_WIDTH - 1,1,1,SSD1306_HEIGHT - 1,White);
ssd1306_UpdateScreen();
return;
}

void ssd1306_TestRectangle()
{
uint32_t delta;

for(delta = 0; delta < 5; delta ++)
{
 ssd1306_DrawRectangle(1 + (5*delta),1 + (5*delta) ,SSD1306_WIDTH-1 - (5*delta),SSD1306_HEIGHT-1 - (5*delta),White);
}
ssd1306_UpdateScreen();
return;
}

void ssd1306_TestCircle()
{
uint32_t delta;

for(delta = 0; delta < 5; delta ++)
{
 ssd1306_DrawCircle(20* delta+30, 30, 10, White);
}
ssd1306_UpdateScreen();
return;
}

void ssd1306_TestArc()
{
ssd1306_DrawArc(30, 30, 30, 20, 270, White);
ssd1306_UpdateScreen();
return;
}

void ssd1306_TestPolyline()
{
SSD1306_VERTEX loc_vertex[] =
{
 {35,40},
 {40,20},
 {45,28},
 {50,10},
 {45,16},
 {50,10},
 {53,16}
};

ssd1306_Polyline(loc_vertex,sizeof(loc_vertex)/sizeof(loc_vertex),White);
ssd1306_UpdateScreen();
return;
}

void ssd1306_TestAll()
{
ssd1306_Init();

ssd1306_TestFPS();
rt_thread_mdelay(3000);

ssd1306_TestBorder();

ssd1306_TestFonts();
rt_thread_mdelay(3000);

ssd1306_Fill(Black);
ssd1306_TestRectangle();
ssd1306_TestLine();
rt_thread_mdelay(3000);

ssd1306_Fill(Black);
ssd1306_TestPolyline();
rt_thread_mdelay(3000);

ssd1306_Fill(Black);
ssd1306_TestArc();
rt_thread_mdelay(3000);

ssd1306_Fill(Black);
ssd1306_TestCircle();
rt_thread_mdelay(3000);

ssd1306_Fill(Black);
ssd1306_SetCursor(0, 0);
ssd1306_WriteString("MCU:D133CBS", Font_11x18, White);
ssd1306_SetCursor(0, 20);
ssd1306_WriteString("I2C:OLED", Font_11x18, White);
ssd1306_UpdateScreen();
rt_thread_mdelay(3000);
}

#ifdef FINSH_USING_MSH
MSH_CMD_EXPORT(ssd1306_TestAll, test ssd1306 oled driver);
#endif
</code></pre>

 

4.2、ssd1306_tests.h

<pre>
<code>/*
* Copyright (c) 2020, RudyLo <luhuadong@163.com>
*
* SPDX-License-Identifier: MIT License
*
* Change Logs:
* Date Author Notes
* 2020-11-15 luhuadong the first version
*/

#ifndef __SSD1306_TEST_H__
#define __SSD1306_TEST_H__

#include <_ansi.h>

_BEGIN_STD_C

void ssd1306_TestBorder(void);
void ssd1306_TestFonts(void);
void ssd1306_TestFPS(void);
void ssd1306_TestAll(void);
void ssd1306_TestLine(void);
void ssd1306_TestRectangle(void);
void ssd1306_TestCircle(void);
void ssd1306_TestArc(void);
void ssd1306_TestPolyline(void);

_END_STD_C

#endif // __SSD1306_TEST_H__
</code></pre>

 

五、程序运行

 

下载程序后，串口终端执行ssd1306_TestAll，显示如下视频

611fe0121d6af809710bcba4fb4516db

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【匠芯创D133CBS】I2C驱动OLED显示屏