【開源項目】點亮OLED，不僅僅是LiteOS
原先用LiteOS點亮過OLED，這次用HarmonyOS點亮OLED
1、在applications/sample/wifi-iot/app下新建myshow文件夾，myshow文件夾下新建myshow.c、oled_ssd1306.c、oled_ssd1306.h、BUILD.gn四個文件。
oled_ssd1306.c為：
#include #include
#include "ohos_types.h"#include "iot_errno.h"#include "iot_i2c.h"
#include "oled_ssd1306.h"
/************************************6*8的點陣************************************/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};
/****************************************8*16的點陣************************************/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 點陣*/static const unsigned char F6X6[]={ 0x00,0x1E,0x1E,0x1E,0x1E,0x00, //■};
/*---8*8 點陣*/static const unsigned char F8X8[]={ //0x00,0x7E,0x7E,0x7E,0x7E,0x7E,0x7E,0x00, 0x7E,0x7E,0x7E,0x7E,0x7E,0x7E,0x7E,0x00, //■};
#define OLED_I2C_IDX 0#define OLED_I2C_BAUDRATE (400*1000) // 400k#define OLED_I2C_ADDR 0x78 // 默認地址為 0x78#define OLED_I2C_CMD 0x00 // 0000 0000 寫命令#define OLED_I2C_DATA 0x40 // 0100 0000(0x40) 寫數(shù)據(jù)#define OLED_WIDTH (128)
#define SNAKE_CLEAR_BLOCK 0x00
static uint32 OledWriteByte(uint8 regAddr, uint8 byte){ // TODO: Check SSD1306 DataSheet if must write by byte.
uint8 buffer[] = {regAddr, byte};
return IoTI2cWrite(OLED_I2C_IDX, OLED_I2C_ADDR, buffer, ARRAY_SIZE(buffer));}
/** * [url=home.php?mod=space&uid=2666770]@Brief[/url] Write a command byte to OLED device. * * [url=home.php?mod=space&uid=3142012]@param[/url] cmd the commnad byte to be writen. * [url=home.php?mod=space&uid=1141835]@Return[/url] Returns {[url=home.php?mod=space&uid=41289]@Link[/url] 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);}
/** * @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);}
/** * @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 };
IoTI2cInit(OLED_I2C_IDX, OLED_I2C_BAUDRATE);
for (uint32 i = 0; i < ARRAY_SIZE(initCmds); i++) { uint32 status = OledWriteCmd(initCmds[i]); if (status != IOT_SUCCESS) { return status; } }
return IOT_SUCCESS;}
void OledSetPosition(uint8 x, uint8 y){ OledWriteCmd(0xb0 + y); OledWriteCmd(((x & 0xf0) >> 4) | 0x10); OledWriteCmd(x & 0x0f);}
void OledFillScreen(uint8 fillData){ uint8 m = 0; uint8 n = 0;
for (m=0; m < 8; m++) { OledWriteCmd(0xb0 + m); OledWriteCmd(0x00); OledWriteCmd(0x10);
for (n=0; n < 128; n++) { OledWriteData(fillData); } }}
/** * @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;
c = ch - ' '; //得到偏移后的值 if (x > OLED_WIDTH - 1) { x = 0; y = y + 2; }
if (font == FONT8x16) { OledSetPosition(x, y); for (i = 0; i < 8; i++){ OledWriteData(F8X16[c*16 + i]); }
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][i]); } }}
void OledShowString(uint8 x, uint8 y, const char* str, Font font){ uint8 j = 0; if (str == NULL) { printf("param is NULL,Please check!!!"); return; }
while (str[j]) { OledShowChar(x, y, str[j], font); x += 8; if (x > 120) { x = 0; y += 2; } j++; }}oled_ssd1306.h：
#ifndef OLED_SSD1306_H#define OLED_SSD1306_H
#include "ohos_types.h"
/** * @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);
void OledFillScreen(uint8 fillData);
enum Font { FONT6x8 = 1, FONT8x16};typedef enum Font Font;
enum DisOnOff{ DISOFF, DISON};
typedef enum DisOnOff DisOnOff;
void OledShowChar(uint8 x, uint8 y, uint8 ch, Font font);void OledShowString(uint8 x, uint8 y, const char* str, Font font);
void PrintBlock(uint8 x0, uint8 y0);void DisplayBlock(uint8 x0, uint8 y0);
#endif // OLED_SSD1306_Hmyshow.c：
#include
#include
#include "ohos_init.h"#include "cmsis_os2.h"#include "iot_gpio.h"
#include "oled_ssd1306.h"
void mymain(void){
OledInit();
OledFillScreen(0x00); OledShowString(26, 2, "HELLO WORLD!", FONT8x16);}
SYS_RUN(mymain);myshow/BUILD.gn：
static_library("myshow") { sources = [ "oled_ssd1306.c", "myshow.c", ]
include_dirs = [ "http://utils/native/lite/include", "http://kernel/liteos_m/kal/cmsis", "http://base/iot_hardware/peripheral/interfaces/kits", ]}然后修改app/BUILD.gn：
import("http://build/lite/config/component/lite_component.gni")
lite_component("app") { features = [ # "demo_snake", "myshow:myshow", ] deps = []}保存后編譯：
然后把生成的Hi3861_wifiiot_app_allinone.bin用HiBurn工具下載到開發(fā)板：
下載完成后OLED顯示如下圖：
聲明：本文內(nèi)容及配圖由入駐作者撰寫或者入駐合作網(wǎng)站授權轉載。文章觀點僅代表作者本人，不代表電子發(fā)燒友網(wǎng)立場。文章及其配圖僅供工程師學習之用，如有內(nèi)容侵權或者其他違規(guī)問題，請聯(lián)系本站處理。
舉報投訴
-
OLED
+關注
關注
120文章
6285瀏覽量
228030
發(fā)布評論請先 登錄
相關推薦
熱點推薦
CYT2B93CAE怎樣才能接收特定 ID 的中斷？
你好，我正在使用 CYT2B93CAE
使用設備配置器 5.3，我選擇 RX 緩沖區(qū)來接受特定的 ID（例如，0x020）。然而，問題是我在總線上的所有幀上都收到了中斷，而不僅僅是專用 ID。
當其他所有 ID 均未發(fā)生中斷時，我怎樣才能接收特定 ID 的中斷？
發(fā)表于 07-15 07:09
芯科科技擴展Zephyr RTOS項目支持
在 Silicon Labs（芯科科技），我們對無線通信充滿熱情，致力于推動下一代物聯(lián)網(wǎng)設備的發(fā)展。當然，創(chuàng)新的無線解決方案不僅僅是擁有出色的藍牙或Wi-Fi 芯片—強大的軟件同樣必不可少。我們
解密電源與電機的魔法——電源的魔法：點亮智能家電的“能量之源”
家電的能量供給：電源技術知多少？如果說電機是家電的“心臟”，那么電源就是它們的“供氧機”，為整個系統(tǒng)提供源源不斷的“能量”。電源的作用不可小覷，它不僅僅是一個把交流電轉化為直流電的簡單裝置，還是一個能量調節(jié)和分配的高手。在家電的世界里，電源主要有兩種類型：開關電源和線性電源。開關電源是目
戶外通信機柜選購方法，服務的關鍵
戶外通信機柜購買指南室外通信機柜簡介在設置室外電信系統(tǒng)時，最關鍵的決策之一是選擇合適的機柜。它不僅僅是一個盒子;它是您重要設備的第一道防線。選擇合適的機柜的意義選擇合適的戶外機柜不僅僅是一個技術問題
利用云主機快速開發(fā)MQTT客戶端仿真硬件上云IoTDA
本項目的目標不僅僅是為開發(fā)者提供一個調試工具，更重要的是通過仿真硬件的方式，使得開發(fā)者能夠從軟件層面全面體驗物聯(lián)網(wǎng)設備上云的全過程。
SAE J3400標準助力北美電動汽車充電未來
專家強調，SAE J3400標準涵蓋的不僅僅是充電連接器，而是一整套充電系統(tǒng)，而且其中整合了大量行業(yè)最佳實踐。
恩智浦助力打造靈活可擴展的電動汽車充電樁
隨著電動汽車市場的發(fā)展，對于充電樁的需求也在持續(xù)增長。今天，電動汽車充電樁的建設和部署，不僅僅是電動汽車配套服務的一部分，也已經(jīng)成為未來能源基礎設施戰(zhàn)略中不可或缺的一環(huán)。
凌蒙派OpenHarmony開源項目榮獲本期Gitee官方推薦
近日，我司凌蒙派OpenHarmony開源項目榮獲本期Gitee官方推薦。本期Gitee官方推薦不僅是對凌蒙派OpenHarmony開源項目
注意!無線模塊不接天線不僅僅是影響傳輸距離
無線模塊的有效通信距離通常依賴于其發(fā)射功率和信號的傳播能力。在沒有天線的情況下，信號無法正常輻射，這將直接導致通信距離的顯著降低。對于小功率模塊而言，其原本有限的有效通信距離幾乎會降為零；而對于大功率模塊，盡管其理論上可以覆蓋較大的范圍，但在無天線情況下，其信號覆蓋能力也會大打折扣。且數(shù)據(jù)傳輸可能會出現(xiàn)延遲、丟包等問題，嚴重影響用戶體驗。
慧明DM16數(shù)字調音臺產(chǎn)品概述
在數(shù)字調音臺里面，信號處理芯片（DSP）是它的心臟。在我們慧明的DM16數(shù)字調音臺里，它不僅僅是硬核，還是超級引擎！
揭秘！霍尼韋爾MIP系列—無堅不摧的介質隔離壓力傳感器
MIP系列壓力傳感器猶如一顆璀璨的星辰，以其“固若金湯”的堅韌與精準，照亮了重載介質隔離壓力測量的新紀元。這不僅僅是一款產(chǎn)品，它是霍尼韋爾智慧與技術的結晶，是穩(wěn)定與可靠代名詞的生動詮釋。
數(shù)字車鑰匙市場規(guī)模及發(fā)展現(xiàn)狀
數(shù)字車鑰匙的出現(xiàn)，不僅僅是物理鑰匙的替代，還可實現(xiàn)無線開關鎖、啟動車輛、智能感應、遠程控制、艙內(nèi)監(jiān)測、自動泊車等功能的集成。
歐創(chuàng)芯線性車大燈芯片OC7201C產(chǎn)品介紹
在探索汽車照明的極限邊界時，我們自豪地推出——線性車大燈芯片OC7201C。這不僅僅是一款芯片，它是未來汽車照明技術的璀璨明珠，引領著智能與安全的新紀元。
不僅僅是節(jié)能，AI商業(yè)照明解決方案為地下停車場帶來哪些想象空間？
近日，國家發(fā)展改革委、市場監(jiān)管總局、生態(tài)環(huán)境部等三部門聯(lián)合印發(fā)《關于進一步強化碳達峰碳中和標準計量體系建設行動方案（2024—2025年）》，緊扣節(jié)能降碳重點領域發(fā)力，明確提出：對標國際先進水平，修訂升級照明器具產(chǎn)品能效標準，擴大能效產(chǎn)品覆蓋范圍。如何將智能技術、綠色理念與建筑相結合，推動商業(yè)照明的可持續(xù)發(fā)展？如何減少商業(yè)空間的能耗浪費，提升能源利用效率，降
五彩斑斕的芯片晶圓：不僅僅是科技的結晶
在半導體行業(yè)中，芯片晶圓是核心組件，而在展示這些精密的科技產(chǎn)品時，人們常常會發(fā)現(xiàn)它們呈現(xiàn)出五彩斑斕的外觀。這一現(xiàn)象并非偶然，而是由多種因素共同作用的結果。下面，我們將深入探討為何芯片晶圓會展現(xiàn)出如此豐富的色彩。
工商網(wǎng)監(jiān)
評論