ESP32-C5 测试1--连接屏幕

这次幸运抽取到试用ESP32-C5，先测试其基本功能：
1.Arduino环境：
Arduino先安装ESP32-C5板子，首先项添加https://github.com/espressif/ard ... 2_dev_index_cn.json

开发板管理输入esp32，选择3.3.0-alpha1-cn


2.安装透明屏幕库

屏幕使用Fermion: 1.51”OLED 透明屏幕，先下载库的zip文件，因为在库管理器搜索U8g2库安装的并不对。zip库下载地址：https://gitee.com/dfrobot/U8g2_A ... /archive/master.zip
下载后到项目--导入库--添加zip库文件导入下载的库文件


用转接板连接开发板和屏幕

3.端口权限：
由于这次是使用一台ubuntu电脑上的arduino编写代码，所以要注意端口权限，否则无法烧录代码。
端口权限开放有两种在终端运行的方法：
1）添加用户到dialout组（需注销重新登录）sudo usermod -aG dialout $USER
2）临时权限方案 sudo chmod 666 /dev/ttyACM0
ttyACM0是我当前的端口名称

4.代码测试：

#include <Arduino.h>
#include <U8g2lib.h>

#include <SPI.h>


#if defined ARDUINO_SAM_ZERO
#define OLED_DC  7
#define OLED_CS  5
#define OLED_RST 6
/*ESP32 */
#elif defined(ESP32)
#define OLED_DC  D2
#define OLED_CS  D6
#define OLED_RST D3
/*ESP8266*/
#elif defined(ESP8266)
#define OLED_DC  D4
#define OLED_CS  D6
#define OLED_RST D5
/*AVR series board*/
#else
#define OLED_DC  2
#define OLED_CS  3
#define OLED_RST 4
#endif
U8G2_SSD1309_128X64_NONAME2_1_4W_HW_SPI u8g2(/* rotation=*/U8G2_R0, /* cs=*/ OLED_CS, /* dc=*/ OLED_DC,/* reset=*/OLED_RST);


//2D array: The coordinates of all vertices of the tetrahesome are stored
double tetrahedron[4][3] = {{0,20,-20},{-20,-20,-20},{20,-20,-20},{0,0,20}};
void setup(void) {
  u8g2.begin();  
}

void loop(void) {
  /*
       * firstPage will change the current page number position to 0
       * When modifications are between firstpage and nextPage, they will be re-rendered at each time.
       * This method consumes less ram space than sendBuffer
   */
  u8g2.firstPage();
  do {
  //Connect the corresponding points inside the tetrahethal together
  u8g2.drawLine(OxyzToOu(tetrahedron[0][0], tetrahedron[0][2]), OxyzToOv(tetrahedron[0][1], tetrahedron[0][2]), OxyzToOu(tetrahedron[1][0], tetrahedron[1][2]), OxyzToOv(tetrahedron[1][1], tetrahedron[1][2]));
  u8g2.drawLine(OxyzToOu(tetrahedron[1][0], tetrahedron[1][2]), OxyzToOv(tetrahedron[1][1], tetrahedron[1][2]), OxyzToOu(tetrahedron[2][0], tetrahedron[2][2]), OxyzToOv(tetrahedron[2][1], tetrahedron[2][2]));
  u8g2.drawLine(OxyzToOu(tetrahedron[0][0], tetrahedron[0][2]), OxyzToOv(tetrahedron[0][1], tetrahedron[0][2]), OxyzToOu(tetrahedron[2][0], tetrahedron[2][2]), OxyzToOv(tetrahedron[2][1], tetrahedron[2][2]));
  u8g2.drawLine(OxyzToOu(tetrahedron[0][0], tetrahedron[0][2]), OxyzToOv(tetrahedron[0][1], tetrahedron[0][2]), OxyzToOu(tetrahedron[3][0], tetrahedron[3][2]), OxyzToOv(tetrahedron[3][1], tetrahedron[3][2]));
  u8g2.drawLine(OxyzToOu(tetrahedron[1][0], tetrahedron[1][2]), OxyzToOv(tetrahedron[1][1], tetrahedron[1][2]), OxyzToOu(tetrahedron[3][0], tetrahedron[3][2]), OxyzToOv(tetrahedron[3][1], tetrahedron[3][2]));
  u8g2.drawLine(OxyzToOu(tetrahedron[2][0], tetrahedron[2][2]), OxyzToOv(tetrahedron[2][1], tetrahedron[2][2]), OxyzToOu(tetrahedron[3][0], tetrahedron[3][2]), OxyzToOv(tetrahedron[3][1], tetrahedron[3][2]));
  // Rotate 0.1°
  rotate(0.1);
  
  } while ( u8g2.nextPage() );
  //delay(50);
}
/*！
* @brief Convert xz in the three-dimensional coordinate system Oxyz
* into the u coordinate inside the two-dimensional coordinate system Ouv
* @param x in Oxyz  
* @param z in Oxyz
* @return u in Ouv
*/
int OxyzToOu(double x,double z){
   
   return (int)((x + 64) - z*0.35);
}


/*！
* @brief Convert the yz in the three-dimensional coordinate system Oxyz into the v coordinate inside
* the two-dimensional coordinate system Ouv
* @param y in Oxyz  
* @param z in Oxyz
* @return v in Ouv
*/
int OxyzToOv(double y,double z){
    return (int)((y + 26) - z*0.35);
}


/*!
* @brief  Rotate the coordinates of all points of the entire 3D graphic around the Z axis
* @param  angle represents the angle to rotate
*     
*  z rotation (z unchanged)
    x3 = x2 * cosb - y1 * sinb
    y3 = y1 * cosb + x2 * sinb
    z3 = z2
*/
void rotate(double angle)
{
  double rad, cosa, sina, Xn, Yn;

  rad = angle * PI / 180;
  cosa = cos(rad);
  sina = sin(rad);
  for (int i = 0; i < 4; i++)
  {
    Xn = (tetrahedron[0] * cosa) - (tetrahedron[1] * sina);
    Yn = (tetrahedron[0] * sina) + (tetrahedron[1] * cosa);

    //Store converted coordinates into an array of coordinates
    //Because it rotates around the Z-axis, the coordinates of the point z-axis remain unchanged
    tetrahedron[0] = Xn;
    tetrahedron[1] = Yn;
  }
}

但屏幕并不显示，不知道是端口设置错误还是不支持这个屏幕