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安裝配置git

一、更新軟件源

sudo apt update

二、安裝git

sudo apt install git -y

成功安裝git如圖：

三、配置git

1、設置賬號

git config --global user.name "name" (github官網注冊的用戶名)

2、設置郵箱

git config --global user.email "email" (gitub官網注冊綁定的郵箱)

3、查看配置

git config --list

4、生成SSH秘鑰

ssh-keygen -t rsa -C "注冊綁定的郵箱"

(輸入兩次密碼后，提示的地方直接按Enter，成功生成如下圖所示)

5、查看生成的秘鑰

cd
cat id_rsa.pub （秘鑰命名可能有不同，但一定要是pub文件)

6、github配置SSH公鑰

登錄github官網，網址：https://github.com/
右上角登陸后點擊settings->SSH and GPS keys->New SSH key

將id_rsa.pub文件中的生成的內容全部復制到key中，輸入title，點擊Add SSH key即可

下載代碼

git clone “倉庫地址"

本地文件推送到遠程倉庫

1、查詢狀態

git status

2、添加文件到緩存區

git add *

3、再次查詢狀態(文件由紅變成綠色，說明已轉移至緩存區)

git status

4、提交到本地倉庫

git commit -m "source"(”source“是注釋)

5、添加本地倉庫推送至遠程倉庫的地址

git remote add origin +倉庫地址

6、核實遠程倉庫地址

git remote -v

7、推送至遠程倉庫

git push -u origin master

注：上文提到的倉庫地址需要自行創建獲取。

C語言編寫貪吃蛇程序

1、編寫代碼

vim tanchishe.c （使用vim工具編輯，進入后按esc按鍵后再按i或者l切換編輯模式）
編輯完成后，按下esc按鍵，再依次輸入:wq保存并推出

#include #include #include #include #include #include #include #include #include #define MOVEUP(x) printf("\033[%dA", (x)) static struct termios ori_attr,cur_attr;static inline int tty_reset();static inline int kbhit();static inline int tty_set();#define ROW_MAX 20#define COL_MAX 50#define SPEED_MAX 500#define SPEED_MIN 125#define SNAKELEN 3#define SNAKE_HEAD '@'#define SNAKE_BODY '#'#define FOOD '$'#define LEFT 'a'#define RIGHT 'd'#define UP 'w'#define DOWN 's'#define EAT_SPACE 1#define EAT_FOOD 2#define EAT_BODY 0char dc = '0';char bodyDc = '0'; float speed = SPEED_MAX ;//ms int snake_length = 0; int grade  = 1;  struct Location {     int row;     int col; };  typedef struct ske {     struct Location place;     struct ske *next; }Snake;  struct Location food; Snake *head = NULL;  char str[ROW_MAX][COL_MAX]; void Init_str();void Display();void Init_food();void Init_snake();void Wait_game();int Snake_move();void moveToUp();void moveToDown();void moveToLeft();void moveToRight();void snakeShow();void foodShow();void reDisplay();void GameOver();void addBody(int,int);void moveBody(int,int);void Delay();int isUpgrade();int Upgrade();void releaseSnake();void PrintRule(); int main() {     int again = 0;         do     {//printf("\033[2J");         int flag = 0;again = 0;         Init_str();         Init_snake();         Init_food();         Display();         Wait_game();         while(1)         {             flag = Snake_move() ;     if(flag == EAT_BODY)     {GameOver();     }             reDisplay();             Delay();                          if(isUpgrade())             {again = Upgrade();                      break;             }         }     }while( again == 1); }void PrintRule(){    printf("**************************************************\n");    printf("* 游戲規則：【@】表示蛇頭，【$】表示食物，【#】  *\n");    printf("* 表示蛇的身體。每吃到一個食物蛇的身體加長一個， *\n");    printf("* 吃到蛇身或撞到墻，則游戲結束                   *\n");    printf("* 按wsad可以控制蛇移動方向，分別表示上下左右方向 *\n");    printf("* 請按wsad鍵開始游戲                             *\n");    printf("**************************************************\n");}void GameOver(){    printf("Game Over!!!\n");    printf("you play %d grade,and score is :%d\n",grade,(grade-1)*2000+(snake_length-1)*100);    exit(1);}int Upgrade(){    if( speed <= SPEED_MIN)    {printf("Congratulations!!! you win.\n");exit(1);    }    else    { printf("Play next grade ? < y / n >\n");printf("Else press  to exit.\n ");grade ++ ;char ch ;do{    ch = getch();    ch = tolower(ch);    if(ch == 'y' )    {releaseSnake();snake_length = 0;speed /= 2;      return 1;    }    else if(ch == 'n')    {printf("Play this grade.\n");return 1;    }    else if(ch == 27)exit(1);}while(ch != 'y' || ch != 'n');    }}void releaseSnake(){    Snake *p = head;    while(head != NULL)     {p = head;head = head->next;free(p);    }}int isUpgrade(){    return snake_length == SNAKELEN ? 1:0;}void Delay(){    unsigned long int tick1 = clock();    char ch;    while(1000*(clock() - tick1 )/CLOCKS_PER_SEC <= speed)    {ch = control();ch = tolower(ch);if(ch == UP){    if(dc != DOWN)    {    dc = ch;        break;    }}else if(ch == DOWN){    if(dc != UP)    { dc = ch ;break;    }}else if( ch == LEFT){    if(dc != RIGHT)    {dc = ch;break;    }}else if(ch == RIGHT){    if(dc != LEFT)    { dc = ch;break;    }}    }}void addBody(int x, int y){    Snake *p = (Snake *)malloc(sizeof(Snake));    if(p == NULL)    {printf("Error!!!Apply Snake *p failed\n");exit(1);    }    p->place.row = x;    p->place.col = y;    p->next = head->next;    head->next = p;    snake_length ++;   }void foodShow(){    str[food.row][food.col] = FOOD;}void snakeShow(){    Snake *p = head;    while(p != NULL)    {if(p == head)    str[p->place.row][p->place.col] = SNAKE_HEAD ; else    str[p->place.row][p->place.col] = SNAKE_BODY ; p = p->next;     }}void reDisplay(){    Init_str();    foodShow();    snakeShow();     Display(); }int Snake_move(){    int x = head->place.row;    int y = head->place.col;    switch(dc)    {case UP :    if(dc != DOWN )moveToUp();    break;case DOWN :    if(dc != UP )moveToDown();    break;case LEFT :    if(dc != RIGHT )moveToLeft();    break;case RIGHT :    if(dc != LEFT)moveToRight();    break;    }    bodyDc = dc;    int i = head->place.row;    int j = head->place.col;    if(str[i][j] == SNAKE_BODY )    {return EAT_BODY;    }    else if(str[i][j] == FOOD )    {addBody(x,y);Init_food();return EAT_FOOD;    }    else if(str[i][j] == ' ')    {moveBody(x,y);return EAT_SPACE;    }}void moveBody(int x,int y){    Snake *p = head ,*pre = NULL;    if(head->next != NULL)    {while(p->next != NULL){       pre = p;    p = p->next; }if(pre != head){    p->place.row = x;    p->place.col = y;    p->next = head->next;    head->next = p;    pre->next  = NULL ;    }else{    p->place.row = x;    p->place.col = y;}    }}void moveToRight(){    int i = head->place.row;    int j = head->place.col;    dc = RIGHT ;    if(str[i][j+1] != '|')    {j++ ;    }    else      {GameOver();    }    head->place.row = i;    head->place.col = j;}void moveToLeft(){    int i = head->place.row;    int j = head->place.col;    dc = LEFT ;    if(str[i][j-1] != '|')    {j-- ;    }    else      {GameOver();    }    head->place.row = i;    head->place.col = j;}void moveToUp(){    int i = head->place.row;    int j = head->place.col;    dc = UP ;    if(str[i-1][j] != '-')    {i-- ;    }    else      {GameOver();    }    head->place.row = i;    head->place.col = j;}void moveToDown(){    int i = head->place.row;    int j = head->place.col;    dc = DOWN ;    if(str[i+1][j] != '-')    {i++ ;    }    else      {GameOver();    }    head->place.row = i;    head->place.col = j;}/*void moveToRight(){    int i = head->place.row;    int j = head->place.col;    dc = RIGHT ;    if(str[i][j+1] != '|')    {j++ ;    }*void moveToRight(){    int i = head->place.row;    int j = head->place.col;    dc = RIGHT ;    if(str[i][j+1] != '|')    {j++ ;    }*void moveToRight(){    int i = head->place.row;    int j = head->place.col;    dc = RIGHT ;    if(str[i][j+1] != '|')    {j++ ;    }    else      {j = 1;    }    head->place.row = i;    head->place.col = j;}void moveToLeft(){    int i = head->place.row;    int j = head->place.col;    if(str[i][j-1] !=  '|')    {dc = LEFT ;j--;    }    else    {dc = LEFT ;j = COL_MAX - 2;    }    head->place.row = i;    head->place.col = j;}void moveToDown(){    int i = head->place.row;    int j = head->place.col;    if(str[i+1][j] != '-')    {dc = DOWN ;i++;    }    else     {dc = DOWN ;i = 1;    }    head->place.row = i;    head->place.col = j;    }void moveToUp(){    int i = head->place.row;    int j = head->place.col;    if(str[i-1][j] != '-')    {dc = UP;i--;    }    else    {dc = UP ;i = ROW_MAX -2;    }    head->place.row = i;    head->place.col = j;}*/void Wait_game() {     char ch ;     do     {         ch = getch();         ch = tolower(ch);     }while(ch != UP && ch != DOWN && ch != LEFT && ch != RIGHT );     dc = ch;     bodyDc = dc; } void Init_food() {     unsigned long int seed = time(NULL);     srand(seed+1);     while(1)     {food.row = rand() % ( ROW_MAX - 2) + 1;food.col = rand() % ( COL_MAX - 2) + 1;Snake *p = head;int flag = 1;while(p != NULL){    if(food.row == p->place.row && food.col == p->place.col)    {flag = 0;break;    }    p = p->next;}if(flag == 1)     break;     }     str[food.row][food.col] = FOOD; } void Init_str() {     int i,j;     for(i=0;iplace.row = rand() % ( ROW_MAX - 2) + 1;head->place.col = rand() % ( COL_MAX - 2) + 1;head->next = NULL;str[head->place.row][head->place.col] = SNAKE_HEAD ;snake_length ++ ;     } } /***********   about string handle function  ***********/int control(){int flag = tty_set();int key = 0;if(kbhit())key = getchar();if(flag == 0)tty_reset();return key;}static inline int tty_reset(){if(tcsetattr(STDIN_FILENO,TCSANOW,&ori_attr) != 0)return -1;return 0;}static inline int tty_set(){if(tcgetattr(STDIN_FILENO,&ori_attr))return -1;memcpy(&cur_attr,&ori_attr,sizeof(cur_attr));cur_attr.c_lflag &= ~ICANON;cur_attr.c_lflag &= ~ECHO;cur_attr.c_cc[VMIN] = 1;cur_attr.c_cc[VTIME] = 0;if(tcsetattr(STDIN_FILENO,TCSANOW,&cur_attr) != 0)return -1;return 0;}static inline int kbhit(){fd_set rfds;struct timeval tv;int retval;FD_ZERO(&rfds);FD_SET(0,&rfds);tv.tv_sec = 0;tv.tv_usec = 0;retval = select(1,&rfds,NULL,NULL,&tv);if(retval == -1){perror("select()");return 0;}else if(retval)return 1;elsereturn 0;}int getch(void) {        int c=0;        struct termios org_opts, new_opts;        int res=0;        //-----  store old settings -----------        res=tcgetattr(STDIN_FILENO, &org_opts);        //---- set new terminal parms --------        memcpy(&new_opts, &org_opts, sizeof(new_opts));        new_opts.c_lflag &= ~(ICANON | ECHO | ECHOE | ECHOK | ECHONL | ECHOPRT | ECHOKE | ICRNL);        tcsetattr(STDIN_FILENO, TCSANOW, &new_opts);        c=getchar();            //------  restore old settings ---------        res=tcsetattr(STDIN_FILENO, TCSANOW, &org_opts);        return c;}

2、編譯代碼

gcc tanchishe.c

3、運行代碼

./a.out

小結：

經過了幾周的試用，剛開始的時候固件可能還未完善，個別功能無法開啟或例程無法使用，折騰了我好幾天，這在后面的維護更新后都得到了解決。這里給地平線的工作人員點個贊，遇到問題他們會熱心的解答，出現異常時也有及時處理。總體來說，旭日X3派是一塊面向入門嵌入式非常不錯的開發板，X3派具有不錯的處理與易于擴展的能力，可以滿足嵌入式的低功耗、無線連接和安全等特性。