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【开源项目】OpenHarmony点亮OLED,不仅仅是LiteOS

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发表于 2022-8-20 10:52:12 | 显示全部楼层 |阅读模式
【开源项目】OpenHarmony点亮OLED,不仅仅是LiteOS4 H3 g# d, [  `( R/ S
原先用LiteOS点亮过OLED,这次用OpenHarmonyOS点亮OLED
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1、在applications/sample/wifi-iot/app下新建myshow文件夹,myshow文件夹下新建myshow.c、oled_ssd1306.c、oled_ssd1306.h、BUILD.gn四个文件。
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oled_ssd1306.c为:
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#include <stdio.h>#include <unistd.h>7 T$ I( X+ N8 O- ]
#include "ohos_types.h"#include "iot_errno.h"#include "iot_i2c.h"
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+ x/ i( v9 p9 j. O#include "oled_ssd1306.h"
+ |; W, x6 B8 M" J+ h/************************************6*8的点阵************************************/static unsigned char F6x8[][6] ={    { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp    { 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00 }, // !    { 0x00, 0x00, 0x07, 0x00, 0x07, 0x00 }, // "    { 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // #    { 0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $    { 0x00, 0x62, 0x64, 0x08, 0x13, 0x23 }, // %    { 0x00, 0x36, 0x49, 0x55, 0x22, 0x50 }, // &    { 0x00, 0x00, 0x05, 0x03, 0x00, 0x00 }, // '    { 0x00, 0x00, 0x1c, 0x22, 0x41, 0x00 }, // (    { 0x00, 0x00, 0x41, 0x22, 0x1c, 0x00 }, // )    { 0x00, 0x14, 0x08, 0x3E, 0x08, 0x14 }, // *    { 0x00, 0x08, 0x08, 0x3E, 0x08, 0x08 }, // +    { 0x00, 0x00, 0x00, 0xA0, 0x60, 0x00 }, // ,    { 0x00, 0x08, 0x08, 0x08, 0x08, 0x08 }, // -    { 0x00, 0x00, 0x60, 0x60, 0x00, 0x00 }, // .    { 0x00, 0x20, 0x10, 0x08, 0x04, 0x02 }, // /    { 0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0    { 0x00, 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1    { 0x00, 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2    { 0x00, 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3    { 0x00, 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4    { 0x00, 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5    { 0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6    { 0x00, 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7    { 0x00, 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8    { 0x00, 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9    { 0x00, 0x00, 0x36, 0x36, 0x00, 0x00 }, // :    { 0x00, 0x00, 0x56, 0x36, 0x00, 0x00 }, // ;    { 0x00, 0x08, 0x14, 0x22, 0x41, 0x00 }, // <    { 0x00, 0x14, 0x14, 0x14, 0x14, 0x14 }, // =    { 0x00, 0x00, 0x41, 0x22, 0x14, 0x08 }, // >    { 0x00, 0x02, 0x01, 0x51, 0x09, 0x06 }, // ?    { 0x00, 0x32, 0x49, 0x59, 0x51, 0x3E }, // @    { 0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C }, // A    { 0x00, 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B    { 0x00, 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C    { 0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D    { 0x00, 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E    { 0x00, 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F    { 0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G    { 0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H    { 0x00, 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I    { 0x00, 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J    { 0x00, 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K    { 0x00, 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L    { 0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M    { 0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N    { 0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O    { 0x00, 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P    { 0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q    { 0x00, 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R    { 0x00, 0x46, 0x49, 0x49, 0x49, 0x31 }, // S    { 0x00, 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T    { 0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U    { 0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V    { 0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W    { 0x00, 0x63, 0x14, 0x08, 0x14, 0x63 }, // X    { 0x00, 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y    { 0x00, 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z    { 0x00, 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [    { 0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // 55    { 0x00, 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ]    { 0x00, 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^    { 0x00, 0x40, 0x40, 0x40, 0x40, 0x40 }, // _    { 0x00, 0x00, 0x01, 0x02, 0x04, 0x00 }, // '    { 0x00, 0x20, 0x54, 0x54, 0x54, 0x78 }, // a    { 0x00, 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b    { 0x00, 0x38, 0x44, 0x44, 0x44, 0x20 }, // c    { 0x00, 0x38, 0x44, 0x44, 0x48, 0x7F }, // d    { 0x00, 0x38, 0x54, 0x54, 0x54, 0x18 }, // e    { 0x00, 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f    { 0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C }, // g    { 0x00, 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h    { 0x00, 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i    { 0x00, 0x40, 0x80, 0x84, 0x7D, 0x00 }, // j    { 0x00, 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k    { 0x00, 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l    { 0x00, 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m    { 0x00, 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n    { 0x00, 0x38, 0x44, 0x44, 0x44, 0x38 }, // o    { 0x00, 0xFC, 0x24, 0x24, 0x24, 0x18 }, // p    { 0x00, 0x18, 0x24, 0x24, 0x18, 0xFC }, // q    { 0x00, 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r    { 0x00, 0x48, 0x54, 0x54, 0x54, 0x20 }, // s    { 0x00, 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t    { 0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u    { 0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v    { 0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w    { 0x00, 0x44, 0x28, 0x10, 0x28, 0x44 }, // x    { 0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C }, // y    { 0x00, 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z    { 0x14, 0x14, 0x14, 0x14, 0x14, 0x14 }, // horiz lines};
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A( o; ]3 B/ w$ w) f' X/****************************************8*16的点阵************************************/static const unsigned char F8X16[]={    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// 0    0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00,//! 1    0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//" 2    0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00,//# 3    0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00,//$ 4    0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00,//% 5    0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10,//& 6    0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//' 7    0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00,//( 8    0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00,//) 9    0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00,//* 10    0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00,//+ 11    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00,//, 12    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,//- 13    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 14    0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00,/// 15    0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0 16    0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//1 17    0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2 18    0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//3 19    0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//4 20    0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//5 21    0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//6 22    0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//7 23    0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8 24    0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//9 25    0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26    0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00,//; 27    0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00,//< 28    0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//= 29    0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00,//> 30    0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00,//? 31    0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00,//@ 32    0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,//A 33    0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B 34    0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C 35    0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D 36    0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 37    0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F 38    0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G 39    0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 40    0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I 41    0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J 42    0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K 43    0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44    0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 45    0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N 46    0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O 47    0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 48    0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q 49    0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 50    0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S 51    0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 52    0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U 53    0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V 54    0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W 55    0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X 56    0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y 57    0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z 58    0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00,//[ 59    0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00,// 60    0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00,//] 61    0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//^ 62    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,//_ 63    0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//` 64    0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65    0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 66    0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c 67    0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d 68    0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e 69    0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f 70    0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g 71    0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h 72    0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 73    0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j 74    0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k 75    0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l 76    0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m 77    0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 78    0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o 79    0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p 80    0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q 81    0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 82    0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s 83    0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t 84    0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u 85    0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v 86    0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w 87    0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x 88    0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 89    0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z 90    0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40,//{ 91    0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,//| 92    0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00,//} 93    0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//~ 94};/*---6*6 点阵*/static const unsigned char F6X6[]={    0x00,0x1E,0x1E,0x1E,0x1E,0x00, //■};
1 d; T. A: B& V) A4 N5 _$ L/*---8*8 点阵*/static const unsigned char F8X8[]={   //0x00,0x7E,0x7E,0x7E,0x7E,0x7E,0x7E,0x00,   0x7E,0x7E,0x7E,0x7E,0x7E,0x7E,0x7E,0x00, //■};* _! w+ R$ p1 x" G" I: b
#define OLED_I2C_IDX        0#define OLED_I2C_BAUDRATE   (400*1000)  // 400k#define OLED_I2C_ADDR       0x78        // 默认地址为 0x78#define OLED_I2C_CMD        0x00        // 0000 0000       写命令#define OLED_I2C_DATA       0x40        // 0100 0000(0x40) 写数据#define OLED_WIDTH          (128)
0 {: U9 j9 W- L0 }9 I1 N#define SNAKE_CLEAR_BLOCK  0x00
# @7 w  G5 H2 ~  x
. P+ L1 _0 M5 [4 A4 ^static uint32 OledWriteByte(uint8 regAddr, uint8 byte){  // TODO: Check SSD1306 DataSheet if must write by byte.$ }# _. ]; G1 \- p" U8 l
    uint8 buffer[] = {regAddr, byte};9 u. t) {8 a% F. C6 s9 r/ _5 o) G
  return IoTI2cWrite(OLED_I2C_IDX, OLED_I2C_ADDR, buffer, ARRAY_SIZE(buffer));}9 ^& y# \/ N( }6 y' m* L2 H/ a
/** * @Brief Write a command byte to OLED device. * * @param cmd the commnad byte to be writen. * @Return Returns {@Link WIFI_IOT_SUCCESS} if the operation is successful; * returns an error code defined in {@link wifiiot_errno.h} otherwise. */static uint32 OledWriteCmd(uint8 cmd){    return OledWriteByte(OLED_I2C_CMD, cmd);}2 g# \% u6 [4 k* J# [# n
/** * @brief Write a data byte to OLED device. * * @param cmd the data byte to be writen. * @return Returns {@link WIFI_IOT_SUCCESS} if the operation is successful; * returns an error code defined in {@link wifiiot_errno.h} otherwise. */static uint32 OledWriteData(uint8 data){  return OledWriteByte(OLED_I2C_DATA, data);}
3 D" z! Y4 _1 L# n5 }) A/** * @brief ssd1306 OLED Initialize. */uint32 OledInit(void){    static const uint8 initCmds[] = {        0xAE, // --display off        0x00, // ---set low column address        0x10, // ---set high column address        0x40, // --set start line address        0xB0, // --set page address        0x81, // contract control        0xFF, // --128        0xA1, // set segment remap        0xA6, // --normal / reverse        0xA8, // --set multiplex ratio(1 to 64)        0x3F, // --1/32 duty        0xC8, // Com scan direction        0xD3, // -set display offset        0x00, //        0xD5, // set osc division        0x80, //        0xD8, // set area color mode off        0x05, //        0xD9, // Set Pre-Charge Period        0xF1, //        0xDA, // set com pin configuartion        0x12, //        0xDB, // set Vcomh        0x30, //        0x8D, // set charge pump enable        0x14, //        0xAF, // --turn on oled panel    };
+ d% n1 z3 V& i    IoTI2cInit(OLED_I2C_IDX, OLED_I2C_BAUDRATE);
- F4 m9 w( v# n% ?( u1 c. v5 U  for (uint32 i = 0; i < ARRAY_SIZE(initCmds); i++) {        uint32 status = OledWriteCmd(initCmds);        if (status != IOT_SUCCESS) {            return status;        }    }# U3 x7 F# l, V; }9 F, @6 e3 B, z
    return IOT_SUCCESS;}- ?/ C7 c; H$ G

; w/ B5 R$ N4 \6 @void OledSetPosition(uint8 x, uint8 y){    OledWriteCmd(0xb0 + y);    OledWriteCmd(((x & 0xf0) >> 4) | 0x10);    OledWriteCmd(x & 0x0f);}
# S9 _/ D: c' E: C4 Q2 L" \
) S! u* v! T8 x% j% ]void OledFillScreen(uint8 fillData){    uint8 m = 0;    uint8 n = 0;
3 H7 o8 L) M- u6 E    for (m=0; m < 8; m++) {        OledWriteCmd(0xb0 + m);        OledWriteCmd(0x00);        OledWriteCmd(0x10);2 T' b" A% r) X+ ?) H& j* x7 K
        for (n=0; n < 128; n++) {            OledWriteData(fillData);        }    }}
* I: }+ y1 h- W- Z/** * @brief 8*16 typeface * @param x: write positon start from x axis  * @param y: write positon start from y axis * @param ch: write data * @param font: selected font */void OledShowChar(uint8 x, uint8 y, uint8 ch, Font font){          uint8 c = 0;    uint8 i = 0;
, R# {! V0 I) y    c = ch - ' '; //得到偏移后的值      if (x > OLED_WIDTH - 1) {        x = 0;        y = y + 2;    }/ Z# s- o" d6 l7 q. Q$ U
    if (font == FONT8x16) {        OledSetPosition(x, y);          for (i = 0; i < 8; i++){            OledWriteData(F8X16[c*16 + i]);        }% g9 M: e$ a3 M1 u
        OledSetPosition(x, y+1);        for (i = 0; i < 8; i++) {            OledWriteData(F8X16[c*16 + i + 8]);        }    }else {        OledSetPosition(x, y);        for (i = 0; i < 6; i++) {            OledWriteData(F6x8[c]);        }    }}
6 R  Q- n5 d9 a' |8 e( \5 S
2 [$ G' ^: V& _1 u/ z4 z5 gvoid OledShowString(uint8 x, uint8 y, const char* str, Font font){  uint8 j = 0;    if (str == NULL) {        printf("param is NULL,Please check!!!");        return;    }$ e* o$ J! m3 ]0 p  N( u8 o
  while (str[j]) {        OledShowChar(x, y, str[j], font);        x += 8;        if (x > 120)        {            x = 0;            y += 2;        }        j++;  }}
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oled_ssd1306.h:

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#ifndef OLED_SSD1306_H#define OLED_SSD1306_H7 A8 Q& [) ]9 H! u
#include "ohos_types.h"% [+ F, F; {9 Q
/** * @brief ssd1306 OLED Initialize. */uint32 OledInit(void);/** * @brief Set cursor position * * @param x the horizontal posistion of cursor * @param y the vertical position of cursor  * @return Returns {@link WIFI_IOT_SUCCESS} if the operation is successful; * returns an error code defined in {@link wifiiot_errno.h} otherwise. */void OledSetPosition(uint8 x, uint8 y);; u& z6 Z$ \" M$ j7 l
void OledFillScreen(uint8 fillData);& `# e+ ^: i4 b% s( a5 t
enum Font {    FONT6x8 = 1,    FONT8x16};typedef enum Font Font;
4 s" l8 A/ v5 D: o0 penum DisOnOff{  DISOFF,  DISON};" ~1 W$ T4 ]: h
typedef enum DisOnOff DisOnOff;
- u' {( f2 Q9 J9 s( H) jvoid OledShowChar(uint8 x, uint8 y, uint8 ch, Font font);void OledShowString(uint8 x, uint8 y, const char* str, Font font);7 Z) a. p! H2 \7 i8 J
/ Z( d. \8 V0 |5 f$ m* w5 W8 m/ \
void PrintBlock(uint8 x0, uint8 y0);void DisplayBlock(uint8 x0, uint8 y0);
5 R; i0 B) {7 X
- Y' I# X3 ]) i: ?3 u#endif // OLED_SSD1306_H
. x! R9 ]$ J5 F1 b. @$ f3 ?
myshow.c:

* g: {6 q' ~& A# {( s* V% o0 o
  • / D! h  D7 u$ T' a7 }' M
#include <stdio.h>4 V" G6 K- A* x; b& f
#include <unistd.h>. m2 n, l4 v$ P* d( H+ }; {/ e
#include "ohos_init.h"#include "cmsis_os2.h"#include "iot_gpio.h"3 _4 p- ]0 @7 w/ ~: t/ [: f+ [6 C+ M
#include "oled_ssd1306.h"; V5 I/ E+ W4 V) o  _
void mymain(void){- b; }0 E6 o( B  O% ~
    OledInit();
! Q( K* B3 a4 V  I4 V6 O* `- p    OledFillScreen(0x00);      OledShowString(26, 2, "HELLO WORLD!", FONT8x16);}
; O3 i, B# Z, Q1 F2 ySYS_RUN(mymain);! B/ l0 o. p# C+ t
myshow/BUILD.gn:
* W1 l; j  N- }& h/ P5 Z1 q' V
  • 4 E& p4 P4 c" O
static_library("myshow") {  sources = [    "oled_ssd1306.c",    "myshow.c",  ]
7 w# T! m9 m+ D! {  include_dirs = [      "//utils/native/lite/include",      "//kernel/liteos_m/kal/cmsis",      "//base/iot_hardware/peripheral/interfaces/kits",  ]}9 z1 ^3 o. g+ P. ?" n% r! d: \
然后修改app/BUILD.gn:
- k7 m' A. A6 D

  • 7 O1 f9 Y% p" C9 E. Q+ d. V0 ]2 C# }
import("//build/lite/config/component/lite_component.gni"), Y( P8 K- t1 {) w
lite_component("app") {    features = [        # "demo_snake",        "myshow:myshow",    ]    deps = []}. c. ~% }6 U6 G4 b6 d
保存后编译:
9 e! `% i; u6 u/ C% Q7 q
640?wx_fmt=png.jpg
* g* F7 w9 z4 K) x+ I5 q4 ]% u
然后把生成的Hi3861_wifiiot_app_allinone.bin用HiBurn工具下载到开发板:

7 s5 F- ^; R; O1 ^
640?wx_fmt=png.jpg
* y3 m& b7 {1 n6 ^- j
下载完成后OLED显示如下图:

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640?wx_fmt=jpeg.jpg

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