firebeetle2 esp-c6试用报告2——小白又来了
经历环境配置之后，用arduino IDE点灯后，对于初学者小白来说是鼓舞，但是也是没有任何技术含量的项目，但是没关系，大佬们不都是从不会到会的过程么？于是，我的第二篇试用报告来了，还是基础的入门，通过firebeetle2 esp-c6点亮led屏。
作为学渣文具多的典型，我有好几套的arduino的实验套餐，道具虽多，但是技术有限，勉强完成了点屏。
首先打开arduino IDE，选择板子类型跟端口，连接设备。一开始，想一口吃个胖子，使用温湿度传感器在屏幕上显示温湿度，结果失败了，粗浅的找下原因，一是温湿度的传感器不匹配库，二是板子的插针我没焊，解除不良。
后来，放弃了这艰巨的任务，留着后面慢慢再探索吧。于是我把温湿度传感器拆了，留下来屏幕，找到相关的点led程序。
#include "DFRobot_GDL.h"#define TFT_DC8#define TFT_CS1#define TFT_RST 14DFRobot_ST7735_128x160_HW_SPI screen(/*dc=*/TFT_DC,/*cs=*/TFT_CS,/*rst=*/TFT_RST);/* M0 mainboard DMA transfer *///DFRobot_ST7735_128x160_DMA_SPI screen(/*dc=*/TFT_DC,/*cs=*/TFT_CS,/*rst=*/TFT_RST);void setup() {Serial.begin(115200);screen.begin();}void loop(){ testLine(); testFastLines(COLOR_RGB565_PURPLE,COLOR_RGB565_YELLOW); testRects(COLOR_RGB565_BLACK,COLOR_RGB565_WHITE); testRoundRects(); testCircles(24,COLOR_RGB565_BLUE); testTriangles(COLOR_RGB565_YELLOW); testPrint();}void testLine(){uint16_t color = 0x00FF;screen.fillScreen(COLOR_RGB565_BLACK);for (int16_t x=0; x < screen.width(); x+=6) { screen.drawLine(/*x0=*/screen.width()/*Screen width*//2, /*y0=*/screen.height()/*Screen height*//2, /*x1=*/x, /*y1=*/0, /*c=*/color+=0x0700);}for (int16_t y=0; y < screen.height(); y+=6) { screen.drawLine(screen.width()/2, screen.height()/2, screen.width(), y, color+=0x0700);}for (int16_t x = screen.width(); x >= 0; x-=6) { screen.drawLine(screen.width()/2, screen.height()/2, x,screen.height(), color+=0x0700);}for (int16_t y = screen.height(); y >= 0; y-=6) { screen.drawLine(screen.width()/2, screen.height()/2, 0, y, color+=0x0700);}}void testFastLines(uint16_t color1, uint16_t color2) {for (int16_t y=0; y < screen.height(); y+=4) { screen.drawFastHLine(/*x=*/0, /*y=*/y, /*w=*/screen.width(),/*c=*/color2); delay(10);}for(int16_t x=0; x < screen.width(); x+=3) { screen.drawFastVLine(/*x=*/x, /*y=*/0, /*h=*/screen.height(), /*c=*/color1); delay(10);}}void testRects(uint16_t color1, uint16_t color2) { screen.fillScreen(COLOR_RGB565_BLACK); int16_t x=screen.width()-12; for (; x > 100; x-=screen.width()/40) { screen.drawRect(/*x=*/screen.width()/2 -x/2, /*y=*/screen.height()/2 -x/2 , /*w=*/x, /*h=*/x, /*color=*/color2+=0x0F00); delay(100); } screen.fillRect(/*x=*/screen.width()/2 -x/2, /*y=*/screen.height()/2 -x/2 , /*w=*/x, /*h=*/x, /*color=*/color2); delay(100); for(; x > 6; x-=screen.width()/40){ screen.drawRect(screen.width()/2 -x/2, screen.height()/2 -x/2 , x, x, color1); delay(100); }}void testRoundRects() {screen.fillScreen(COLOR_RGB565_BLACK);int color = 0xF00F;int i;int x = 0;int y = 0;int w = screen.width()-3;int h = screen.height()-3;for(i = 0 ; i <= 10; i+=2) { screen.drawRoundRect(/*x0=*/x, /*y0=*/y, /*w=*/w, /*h=*/h, /*radius=*/20, /*color=*/color); x+=5; y+=5; w-=10; h-=10; color+=0x0100; delay(50);}for(i = 0 ; i <= 10; i+=2) { screen.fillRoundRect(/*x0=*/x, /*y0=*/y, /*w=*/w, /*h=*/h, /*radius=*/10, /*color=*/color); x+=5; y+=5; w-=10; h-=10; color+=0x0500; delay(50);}}void testCircles(uint8_t radius, uint16_t color) {screen.fillScreen(COLOR_RGB565_BLACK);for (int16_t x=radius; x <=screen.width()-radius; x+=radius*2) { for (int16_t y=radius; y <=screen.height()-radius; y+=radius*2) { screen.drawCircle(/*x0=*/x, /*y0=*/y, /*r=*/radius, /*color=*/color); if(x == y ||x == -y ||x == y + 2*radius) screen.fillCircle(/*x0=*/x, /*y0=*/y, /*r=*/radius, /*color=*/color); color += 800; delay(100); }}}void testTriangles(uint16_t color){screen.fillScreen(COLOR_RGB565_BLACK);for (int16_t i=0; i <=screen.width(); i+=24) screen.drawTriangle(/*x0=*/i,/*y0=*/0,/*x1=*/0,/*y1=*/screen.height()-i,/*x2=*/screen.width()-i,/*y2=*/screen.height(), /*color=*/color);for (int16_t i=0; i <screen.width(); i+=24) screen.drawTriangle(screen.width(),i*4/3,0,screen.height()-i*4/3,i,0, color);for (int16_t i=0; i <screen.width(); i+=24) screen.drawTriangle(screen.width(),i*4/3,i,0,screen.width()-i,screen.height(), color);color = COLOR_RGB565_RED;for (int16_t i=0; i <=screen.width(); i+=24) screen.fillTriangle(/*x0=*/i,/*y0=*/0,/*x1=*/0,/*y1=*/screen.height()-i,/*x2=*/screen.width()-i,/*y2=*/screen.height(), /*color=*/color+=100);for (int16_t i=0; i <screen.width(); i+=24) screen.fillTriangle(screen.width(),i*4/3,0,screen.height()-i*4/3,i,0, color+=100);for (int16_t i=0; i <screen.width(); i+=24) screen.fillTriangle(screen.width(),i*4/3,i,0,screen.width()-i,screen.height(), color+=100);}void testPrint() {int16_t color = 0x00FF;screen.setTextWrap(false);screen.fillScreen(COLOR_RGB565_BLACK);screen.setCursor(0, 50);screen.setTextColor(color+=0x3000);screen.setTextSize(0);screen.println("Hello World!");screen.setTextColor(color+=0x3000);screen.setTextSize(1);screen.println("Hello World!");screen.setTextColor(color+=0x3000);screen.setTextSize(2);screen.println("Hello World!");screen.setTextColor(color+=0x3000);screen.setTextSize(3);screen.println("Hello World!");screen.setTextColor(color+=0x3000)screen.setTextSize(4);screen.println("Hello!"); screen.setTextSize(5);screen.print("Hello!");delay(2000);screen.setCursor(0, 0);screen.fillScreen(COLOR_RGB565_BLACK);screen.setTextSize(2);screen.setTextColor(color+=0x3000);screen.print("a = ");screen.setTextColor(color+=0x3000);int a = 1234;screen.println(a, 1);screen.setTextColor(color+=0x3000);screen.print(8675309, HEX);screen.println("this is HEX!");screen.println("");screen.setTextColor(color+=0x0F00);screen.println("running for: ");screen.setTextColor(color+=0x0F00);screen.print(millis());screen.setTextColor(color+=0x0F00);screen.println("/1000 seconds.");char text[ = "Hi DFRobot!";screen.setTextColor(color+=0x0F00);screen.setTextWrap(true);screen.setTextSize(3);screen.println(text);//screen.setFonts((const gdl_Font_t *)SIMKAIFont18ptBitmaps);screen.println(text);delay(2000);}
在整个过程中，遇到了几点问题：
一是插针接触不良，led没有亮，我以为是型号问题，换了一个led屏。
二是GDL库版本要安装。
三是整个程序跑完没问题，但是屏幕没反应，提示'hard resetting',手动按了板子上的reset键，再重新烧录程序就可以了
下一个适用目标，是实现用屏幕跟温湿度传感器显示温湿度，小白要努力。
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