fork download
copy 
  1. /*
  2. 	运行：sudo ./12864
  3. 	编译：gcc 12864.c -o 12864 -L lib -l wiringPi (需已安装wiringPi)
  4. 	by：WuSiYu
  5. */
  6. #include <stdio.h>
  7. #include <stdlib.h>
  8. #include <stdint.h>
  9. #include <wiringPi.h>
  10. #include <iconv.h>
  11. #include <sys/timeb.h>
  12.  
  13.  
  14. #define LCD_RS 4 //显示屏控制线
  15. #define LCD_RW 5
  16. #define LCD_EN 1
  17.  
  18. #define D1 30 //显示屏数据线
  19. #define D2 21
  20. #define D3 22
  21. #define D4 23
  22. #define D5 24
  23. #define D6 25
  24. #define D7 26
  25. #define D8 27
  26.  
  27. char u2g_out[255]; 
  28.  
  29. int this_line_data[768];
  30.  
  31. struct timeb tp;
  32.  
  33. char this_line[3200];
  34. char buf[20];
  35. int i,len,s,data_s,n;
  36.  
  37. FILE *data_fp;
  38. /*===================================================================
  39. 功能：编码转换
  40. 输入：UTF8
  41. 输出：GB2312
  42. ====================================================================*/
  43. int code_convert(char *from_charset,char *to_charset,char *inbuf,int inlen,char *outbuf,int outlen){
  44. 	iconv_t cd;
  45. 	int rc;
  46. 	char **pin = &inbuf;
  47. 	char **pout = &outbuf;
  48.  
  49. 	cd = iconv_open(to_charset,from_charset);
  50. 	if (cd==0) return -1;
  51. 	memset(outbuf,0,outlen);
  52. 	if (iconv(cd,pin,&inlen,pout,&outlen)==-1) return -1;
  53. 	iconv_close(cd);
  54. 	return 0;
  55. }
  56.  
  57. int u2g(char *inbuf,int inlen,char *outbuf,int outlen){ 
  58. 	return code_convert("utf-8","gb2312",inbuf,inlen,outbuf,outlen); 
  59. } 
  60.  
  61. /*===================================================================
  62. 功能：总线写入
  63. 输入：十六进制数据
  64. 输出：无
  65. ====================================================================*/
  66. void bus_write(unsigned char data){
  67. 	int t[10];
  68. 	int f=0,i=0,d=data;
  69.  
  70. 	//进制转换
  71. 	for(i=0;i<8;i++){
  72. 		t[i]=data%2;
  73. 		data=data/2;
  74. 	}
  75.  
  76. 	//输出
  77. 	digitalWrite(D1,t[0]);
  78. 	digitalWrite(D2,t[1]);
  79. 	digitalWrite(D3,t[2]);
  80. 	digitalWrite(D4,t[3]);
  81. 	digitalWrite(D5,t[4]);
  82. 	digitalWrite(D6,t[5]);
  83. 	digitalWrite(D7,t[6]);
  84. 	digitalWrite(D8,t[7]);
  85. }
  86. /*===================================================================
  87. 功能：检查LCD忙状态                                                    
  88. 输入：无
  89. 输出：lcd_busy为1时，忙，等待。lcd-busy为0时,闲，可写指令与数据。      
  90. ====================================================================*/
  91. void chk_busy(){//检查忙位
  92. 	digitalWrite(LCD_RS,0);
  93. 	digitalWrite(LCD_RW,1);
  94. 	digitalWrite(LCD_EN,1);
  95. 	bus_write(0xff);
  96. 	pinMode(D8, INPUT);
  97. 	while(digitalRead(D8));
  98. 	pinMode(D8, OUTPUT);
  99. 	digitalWrite(LCD_EN,0);
  100. }
  101. /*====================================================================
  102. 功能：写命令
  103. 输入：8位数据
  104. 输出：无
  105. =====================================================================*/
  106. void WriteCmd_LCD12864(unsigned char cmdcode){
  107. 	chk_busy();
  108. 	digitalWrite(LCD_RS,0);
  109. 	digitalWrite(LCD_RW,0);
  110. 	digitalWrite(LCD_EN,1);
  111. 	// delay(5);
  112. 	bus_write(cmdcode);
  113. 	digitalWrite(LCD_EN,0);
  114. 	// delay(5);
  115. }
  116. /*====================================================================
  117. 功能：写数据
  118. 输入：8位数据
  119. 输出：无
  120. =====================================================================*/
  121. void WriteData_LCD12864(unsigned char Dispdata){
  122. 	chk_busy();
  123. 	digitalWrite(LCD_RS,1);
  124. 	digitalWrite(LCD_RW,0);
  125. 	digitalWrite(LCD_EN,1);
  126. 	// delay(5);
  127. 	bus_write(Dispdata);
  128. 	digitalWrite(LCD_EN,0);
  129. 	// delay(5);
  130. }
  131. /*==========================================================================
  132. 功能：发送字符串
  133. 输入：地址，字符串
  134. 输出：无
  135. ===========================================================================*/
  136. void WriteWord_LCD12864(unsigned char a,unsigned char *d){//向LCD指定位置发送一个字符串,长度64字符之内。
  137. 	unsigned char *s;
  138. 	u2g(d,strlen(d),u2g_out,255);
  139. 	s=u2g_out;
  140. 	WriteCmd_LCD12864(a);
  141. 	while(*s>0){
  142. 		WriteData_LCD12864(*s); 
  143. 		s++;
  144. 	}
  145. }
  146. /*==========================================================================
  147. 功能：发送字符串2
  148. 输入：字符串
  149. 输出：无
  150. ===========================================================================*/
  151. void WriteWord_LCD12864_2(unsigned char *d){//向LCD发送一屏字符串,长度64字符之内。
  152. 	int i=0;
  153. 	unsigned char *s;
  154. 	u2g(d,strlen(d),u2g_out,255);
  155. 	s=u2g_out;
  156. 	WriteCmd_LCD12864(0x80);
  157. 	while(*s>0){
  158. 		WriteData_LCD12864(*s); 
  159. 		s++;
  160. 		i++;
  161. 		if(i==16){
  162. 			WriteCmd_LCD12864(0x90);
  163. 		}
  164. 		if(i==32){
  165. 			WriteCmd_LCD12864(0x88);
  166. 		}
  167. 		if(i==48){
  168. 			WriteCmd_LCD12864(0x98);
  169. 		}
  170. 	}
  171. }
  172. void Clean_LCD12864(unsigned char c,unsigned char d){
  173. 	unsigned char l,r;
  174. 	WriteCmd_LCD12864(0x34);
  175. 	for(l=0;l<32;l++){
  176. 		WriteCmd_LCD12864(0x80+l);
  177. 		WriteCmd_LCD12864(0x80);
  178. 		for(r=0;r<16;r++){
  179. 			WriteData_LCD12864(c);
  180. 			WriteData_LCD12864(d);
  181. 		}
  182. 	}
  183. }
  184. void Show_LCD12864(void){
  185. 	unsigned char l,r;
  186. 	WriteCmd_LCD12864(0x36);
  187. 	for(l=0;l<32;l++){
  188. 		WriteCmd_LCD12864(0x80+l);
  189. 		WriteCmd_LCD12864(0x80+1);
  190. 		for(r=0;r<6;r++){
  191. 			WriteData_LCD12864(this_line_data[12*l+r*2]);
  192. 			WriteData_LCD12864(this_line_data[12*l+r*2+1]);
  193. 		}
  194.  
  195. 		for(r=0;r<4;r++){
  196. 			WriteData_LCD12864(0x00);
  197. 		}
  198.  
  199. 		for(r=0;r<6;r++){
  200. 			WriteData_LCD12864(this_line_data[12*32+12*l+r*2]);
  201. 			WriteData_LCD12864(this_line_data[12*32+12*l+r*2+1]);
  202. 		}
  203. 	}
  204. }
  205. /*==========================================================================
  206. 功能：初始化LCD
  207. 输入：无
  208. 输出：无
  209. ===========================================================================*/
  210. void Init_LCD12864(void){			//初始化LCD屏
  211. 	pinMode(D1, OUTPUT);	//设置GPIO
  212. 	pinMode(D2, OUTPUT);
  213. 	pinMode(D3, OUTPUT);
  214. 	pinMode(D4, OUTPUT);
  215. 	pinMode(D5, OUTPUT);
  216. 	pinMode(D6, OUTPUT);
  217. 	pinMode(D7, OUTPUT);
  218. 	pinMode(D8, OUTPUT);
  219.  
  220. 	pinMode(LCD_RS, OUTPUT);
  221. 	pinMode(LCD_RW, OUTPUT);
  222. 	pinMode(LCD_EN, OUTPUT);
  223.  
  224. 	WriteCmd_LCD12864(0x38);       //选择8bit数据流
  225. 	delay(20);
  226. 	WriteCmd_LCD12864(0x01);       //清除显示，并且设定地址指针为00H
  227. 	delay(20);
  228. 	WriteCmd_LCD12864(0x0c);       //开显示(无游标、不反白)
  229. 	delay(20);
  230. }
  231.  
  232. void do_it(void){
  233. 	fgets(this_line,3200,data_fp);
  234.  
  235. 	ftime(&tp);
  236. 	printf("%d--", tp.millitm);
  237.  
  238. 	printf("%d\n", n);
  239. 	n++;
  240. 	len = strlen(this_line);
  241.  
  242. 	i=0;
  243. 	data_s=0;
  244. 	s=0;
  245. 	for(i=0;i<len;i++){
  246. 		if(this_line[i]=='-'){
  247. 			this_line_data[data_s]=atoi(buf);
  248. 			buf[0]=' ';
  249. 			buf[1]=' ';
  250. 			buf[2]=' ';
  251. 			s=0;
  252. 			data_s++;
  253. 		}else{
  254. 			buf[s]=this_line[i];
  255. 			s++;
  256. 		}
  257. 	}
  258. 	WriteCmd_LCD12864(0x36);
  259. 	Show_LCD12864();
  260. 	WriteCmd_LCD12864(0x36);
  261. }
  262.  
  263. int main (int args, char *argv[]){
  264. 	int last=0,img;
  265.  
  266. 	wiringPiSetup();
  267. 	Init_LCD12864();
  268.  
  269. 	WriteCmd_LCD12864(0x01);
  270. 	WriteWord_LCD12864(0x80,"Hello LCD12864");
  271. 	delay(1000);
  272.  
  273.  
  274.  
  275. 	WriteCmd_LCD12864(0x01);
  276. 	WriteCmd_LCD12864(0x36);
  277. 	Clean_LCD12864(0x00,0x00);
  278. 	WriteCmd_LCD12864(0x36);
  279.  
  280. 	data_fp=fopen("all_in_one.h","r");
  281.  
  282. 	ftime(&tp);
  283. 	last=tp.millitm;
  284.  
  285. 	while(1){
  286.  
  287. 		ftime(&tp);
  288.  
  289. 		if(last>tp.millitm){
  290. 			if(1000-last+tp.millitm>=33){
  291. 				// ftime(&tp);
  292. 				// last=tp.millitm;
  293. 				last=43-(1000-last);
  294. 				printf("%d--", last);
  295. 				delay(10);
  296. 				do_it();
  297. 			}
  298. 		}else{
  299. 			if(tp.millitm-last>=33){
  300. 				// ftime(&tp);
  301. 				// last=tp.millitm;
  302. 				last+=33;
  303. 				printf("%d--", last);
  304. 				do_it();
  305. 			}
  306. 		}
  307. 	}
  308. }
  309.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.c:9:22: fatal error: wiringPi.h: No such file or directory
 #include <wiringPi.h>
                      ^
compilation terminated.
stdout
copy 
Standard output is empty
https://ideone.com/4VXxQN
Badapple in LCD12864
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!