stm32驱动LCD12864液晶屏驱动程序

ID:629252 · 发表于 2019-11-7 12:03

stm32驱动LCD12864液晶屏驱动程序，亲测可行，复制直接能用！

废话不多说，直接贴程序

就两个文件，LCD12864.h和LCD12864.c，自己复制过去后，改一下引脚即可

单片机主频：72MHZ

LCD12864.h如下所示

1. #ifndef __LCD12864_H

2. #define __LCD12864_H

3. #include "sys.h"

4.

5.

6. #define LCD1602_RS PEout(0) // PE0 godefine之后我们会发现，这个宏最后就是在这个io的地址这里赋值

7. // #define MEM_ADDR(addr) *((volatile unsigned long *)(addr))

8. #define LCD1602_RW PEout(1) // PE1

9. #define LCD1602_E PAout(3) // PA3

10.

11.

12.void LCD12864IO_Init(void);

13.

14.void LCD1602_DB_IO_outputMode(void);

15.void LCD1602_DB_IO_inputMode(void);

16.

17.void write_LCD1602_DB(uint8_t data);

18.uint8_t read_LCD1602_DB(void);

19.

20.

21.void InitLcd1602(void);

22.void LcdShowStr(unsigned char row, unsigned char column, unsigned char *str);

23.void LcdWriteCmd(unsigned char cmd);

24.

25.void LcdShowImage(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t *img);

26.void LcdClearArea(uint8_t x, uint8_t y, uint8_t w, uint8_t h);

27.

28.//#ifndef _HE_

29.extern uint8_t HE[];

30.extern uint8_t QQ[];

31.extern uint8_t myVX[];

32.

33.//#endif

34.

35.#endif

LCD12864.c如下所示：

1. #include "lcd12864.h"

2. #include "delay.h"

3. //#define _HE_

4.

5. uint8_t HE[]=

6. {

7.

8.

9. 0x20,0x00,0x70,0x00,0x1E,0x00,0x10,0x3E,0x10,0x22,0xFF,0x22,0x10,0x22,0x18,0x22,0x38,0x22,0x54,0x22,0x54,0x22,0x12,0x22,0x11,0x3E,0x10,0x22,0x10,0x00,0x10,0x00/*"和",0*/

10./* (16 X 16 , 宋体 )*/

11.

12.};

13.

14.uint8_t QQ[]=

15.{

16.

17.

18.0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x0F,0xE0,0x3F,0xE0,0x7F,0xF0,0x7F,0xF8,0x7D,0xF0,0x3C,0xD0,0x2C,0x30,0x30,0x70,0x38,0xE0,0x1F,0x00,0x00,0x00,0x00/*"C:\Users\Administrator\Desktop\qqXiaoBing.bmp",0*/

19./* (16 X 16 )*/

20.

21.

22.

23.

24.};

25.

26.u8 myVX[]=

27.{

28.0x00,0x0D,0xFC,0xC8,0x0F,0x3F,0xB0,0x00,0x00,0x0D,0xFC,0xC8,0x0F,0x3F,0xB0,0x00,

29.0x3F,0xCC,0x7C,0x0F,0x93,0x26,0x33,0xFC,0x20,0xCD,0x80,0x31,0xF0,0x9F,0xB3,0x04,

30.0x20,0xCD,0x80,0x31,0xF0,0xDF,0xB3,0x04,0x20,0xCF,0xFF,0xC6,0x0C,0xD9,0xB3,0x04,

31.0x20,0xCF,0xFF,0xC6,0x0C,0x99,0xB3,0x04,0x20,0xCF,0x80,0xCE,0x1C,0xE1,0xB3,0x04,

32.0x20,0xCF,0xC0,0xCE,0x1C,0xE1,0x33,0x04,0x3F,0xCD,0xE0,0x30,0x00,0xC6,0x33,0xFC,

33.0x00,0x0D,0x9B,0x36,0x6C,0xD9,0xB0,0x00,0x00,0x0D,0x9B,0x36,0x6C,0xD9,0xB0,0x00,

34.0xFF,0xFD,0x9F,0xC9,0x83,0x9F,0xBF,0xFF,0xFF,0xFD,0x9F,0xC9,0x83,0x9F,0xBF,0xFF,

35.0xE0,0xCD,0xFC,0x07,0xF0,0x27,0xC0,0xE0,0x06,0x32,0x79,0xC6,0x33,0x39,0xBC,0x99,

36.0x06,0x32,0x7B,0xC6,0x13,0x39,0xBC,0x9B,0xF9,0x01,0x9E,0x0F,0x9C,0x18,0x33,0x64,

37.0xF9,0x01,0x9C,0x0F,0x9C,0x18,0x33,0x64,0x06,0xFC,0x63,0x08,0x73,0x18,0x33,0x1C,

38.0x06,0xFC,0x61,0x08,0x73,0x18,0x33,0x1C,0xD8,0x03,0x9F,0x01,0x8F,0xE7,0xF3,0xE3,

39.0xD8,0x03,0x9F,0x01,0x8F,0xE7,0xF3,0xE3,0xFE,0x31,0x98,0xC9,0xFC,0x87,0x8C,0x87,

40.0x1F,0x03,0x9F,0x35,0xEC,0x18,0x43,0x98,0x1F,0x03,0x9F,0x36,0xEC,0x18,0x43,0x98,

41.0xFE,0xF3,0xE0,0x7F,0xAC,0x39,0xB0,0xF8,0xFE,0xF3,0xE0,0xFF,0xDC,0x39,0xB0,0xF8,

42.0x3E,0xC3,0xFF,0xE6,0x5C,0xE6,0x70,0x60,0xF7,0xF3,0x6F,0xFD,0xCC,0x1F,0xBC,0x9F,

43.0xE7,0xF2,0x67,0xFE,0xFF,0x1F,0xBC,0x9F,0xC7,0xCE,0x7D,0xA1,0xFF,0x00,0x3C,0xE0,

44.0xC7,0xCE,0x7D,0x83,0xBB,0x80,0x3C,0xE0,0x3F,0x3E,0x1C,0x83,0xFF,0x99,0xFF,0xFB,

45.0x3F,0x3E,0x1C,0x43,0xFF,0x99,0xFF,0xFB,0x19,0x02,0x18,0x7F,0xFF,0xB8,0x40,0x07,

46.0x00,0xFC,0x79,0xF3,0xFF,0x39,0xFC,0x83,0x00,0xFC,0x7B,0xF1,0xFF,0x79,0xFC,0x83,

47.0xD9,0x00,0x04,0xF1,0xFF,0x18,0x0F,0xF8,0xD9,0x00,0x04,0xF1,0x83,0x18,0x0F,0xF8,

48.0x18,0xFC,0x19,0xF8,0x1F,0x39,0x80,0xFB,0x18,0xFC,0x19,0xF8,0x1F,0x39,0x80,0xFB,

49.0x27,0xCE,0x66,0x31,0xEC,0x07,0xC0,0x1C,0x38,0x30,0x07,0x0E,0x73,0xE0,0x3C,0x84,

50.0x38,0x30,0x07,0x0E,0x73,0xE0,0x3C,0x84,0x3E,0xC1,0x81,0xC1,0x83,0x00,0x7C,0xF8,

51.0x3E,0xC1,0x83,0xC1,0x83,0x00,0x7C,0xF8,0x21,0x31,0x99,0xF6,0x1C,0x3F,0xFC,0xF8,

52.0x21,0x31,0x9B,0xF6,0x1C,0x3F,0xFC,0xF8,0x39,0x0C,0x1B,0xC9,0x93,0x20,0x00,0x03,

53.0xFF,0xFC,0x03,0x0E,0x6F,0x61,0x1E,0x7F,0xFF,0xFC,0x03,0x0E,0x6F,0x21,0xBF,0x7F,

54.0x00,0x0F,0xE3,0xFF,0xFF,0x81,0xB3,0x18,0x00,0x0F,0xE3,0xFF,0xFF,0xC1,0xB3,0x18,

55.0x3F,0xCE,0x67,0x37,0x83,0xF8,0x3F,0x7B,0x3F,0xCE,0x67,0x37,0x83,0xF8,0x3E,0x79,

56.0x20,0xCC,0x1B,0x36,0x13,0x18,0x00,0x60,0x20,0xCD,0xE7,0x07,0xEF,0x86,0x30,0x07,

57.0x20,0xCD,0xE7,0x07,0xEF,0xC6,0x30,0x07,0x20,0xCC,0x7C,0xCE,0x63,0xC6,0x3C,0x9C,

58.0x20,0xCC,0x7C,0xCE,0x63,0xC6,0x3C,0x9C,0x3F,0xCE,0x67,0x39,0xEC,0xDE,0x0C,0xFC,

59.0x3F,0xCF,0x67,0x3D,0xE4,0x9E,0x0D,0xFC,0x00,0x0F,0xE4,0x3E,0x63,0x19,0xFF,0x80,/*"C:\Users\Administrator\Desktop\我的微信二维码.bmp",0*/

60./* (64 X 64 )*/

61.

62.}

63.;

64.

65.

66.void LCD12864IO_Init(void)

67.{

68.

69.GPIO_InitTypeDef GPIO_InitStructure;

70.

71.RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOG|RCC_APB2Periph_GPIOE|RCC_APB2Periph_GPIOA,ENABLE);

72. //使能PG,PE,PA端口时钟

73.GPIO_InitStructure.GPIO_Pin = 0XFF; //PG端口配置

74.GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出

75.GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHz

76. GPIO_Init(GPIOG,&GPIO_InitStructure); //根据设定参数初始化GPIOG.0

78.

79.GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1; //PE.0,PE.1,端口配置

80. GPIO_Init(GPIOE,&GPIO_InitStructure); //根据设定参数初始化GPIOE.0.1

81.GPIO_SetBits(GPIOE,GPIO_Pin_0|GPIO_Pin_1); //PE.0.1 输出高

82.

83.GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; //PA3端口配置

84. GPIO_Init(GPIOA,&GPIO_InitStructure); //根据设定参数初始化GPIOPA3

85.GPIO_SetBits(GPIOA,GPIO_Pin_3); //PA3 输出高

86.

87.}

88.void LCD1602_DB_IO_outputMode(void)

89.{

90.GPIO_InitTypeDef GPIO_InitStructure;

91.GPIO_InitStructure.GPIO_Pin = 0XFF; //PG端口配置

92.GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出

93.GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHz

94. GPIO_Init(GPIOG,&GPIO_InitStructure); //根据设定参数初始化GPIOG.0

96.

97.}

98.

99.void LCD1602_DB_IO_inputMode(void)

100. {

101. GPIO_InitTypeDef GPIO_InitStructure;

102. GPIO_InitStructure.GPIO_Pin = 0XFF; //PG端口配置

103. GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入

104. GPIO_Init(GPIOG, &GPIO_InitStructure); //根据设定参数初始化GPIOG.0

106.

107. }

108.

109. void write_LCD1602_DB(uint8_t data)

110. {

111. GPIO_Write(GPIOG,(uint16_t)data);

112. }

113.

114. uint8_t read_LCD1602_DB(void)

115. {

116. uint8_t value;

117. value=(uint8_t)GPIO_ReadInputData(GPIOG);

118. return value;

119. }

120.

121. /* 等待液晶准备好 */

122. void LcdWaitReady()

123. {

124. unsigned char sta;

125. delay_us(1);

126.

127. LCD1602_RS = 0;

128. delay_us(1);

129.

130. LCD1602_RW = 1;

131. delay_us(1);

132.

133. do {

134. LCD1602_E = 1;

135. delay_us(1);

136.

137. LCD1602_DB_IO_inputMode();

138. sta= read_LCD1602_DB();

139. LCD1602_DB_IO_outputMode();

140. delay_us(1);

141.

142. LCD1602_E = 0;

143. delay_us(1);

144.

145. } while (sta & 0x80); //bit7等于1表示液晶正忙，重复检测直到其等于0为止

146. }

147. /* 向LCD1602液晶写入一字节命令，cmd-待写入命令值 */

148. void LcdWriteCmd(unsigned char cmd)

149. {

150. delay_us(1);

151.

152. LcdWaitReady();

153. delay_us(1);

154.

155. LCD1602_RS = 0;

156. delay_us(1);

157.

158. LCD1602_RW = 0;

159. delay_us(1);

160.

161. write_LCD1602_DB(cmd);

162. delay_us(1);

163.

164. LCD1602_E = 1;

165. delay_us(1);

166.

167. LCD1602_E = 0;

168. delay_us(1);

169.

170. }

171.

172. /* 向LCD1602液晶写入一字节数据，dat-待写入数据值 */

173. void LcdWriteDat(unsigned char dat)

174. {

175. delay_us(1);

176.

177. LcdWaitReady();

178. delay_us(1);

179.

180. LCD1602_RS = 1;

181. delay_us(1);

182.

183. LCD1602_RW = 0;

184. delay_us(1);

185.

186. write_LCD1602_DB(dat);

187. delay_us(1);

188.

189. LCD1602_E = 1;

190. delay_us(1);

191.

192. LCD1602_E = 0;

193. delay_us(1);

194.

195. }

196. /* 设置显示RAM起始地址，亦即光标位置，(x,y)-对应屏幕上的字符坐标 */

197. void LcdSetCursor(unsigned char x, unsigned char y)

198. {

199. unsigned char addr;

200.

201. if (y >= 2) //说明我们想显示在右半屏

202. {

203. y-= 2;

204. x+= 8; //那么x就得往右挪动8个汉字了

205. }

206. addr =y*16 + x; //现在这个是以一个汉字为单位，这里所有所说的汉字为单位的意思是16*16

207. //由起始DDRAM地址连续写入字符串

208. //addr的值是所有的汉字后面的地址，也是汉字为单位，即ddram也是以汉字为单位的

209. LcdWriteCmd(0x30); //启动DDRAM操作

210. LcdWriteCmd(0x80|addr); //设置ram地址

211. }

212. /* 在液晶上显示字符串，(x,y)-对应屏幕上的起始坐标，str-字符串指针 */

213. void LcdShowStr(unsigned char row, unsigned char column, unsigned char *str)

214. {

215. unsigned char n=0,a;

216. unsigned char *fore_str;

217. LcdSetCursor(column, row); //设置起始地址

218. while (*str != '\0') //连续写入字符串数据，直到检测到结束符

219. {

220.

221. if((n+1)%2==0) //奇数地址

222. {

223. fore_str=str-1;

224. if(*fore_str>0x80)

225. {

226. LcdWriteDat(*str++);

227. }

228. else if(*str>0x80)

229. LcdWriteDat(' ');

230. else if(*str<=0x80)

231. LcdWriteDat(*str++);

232. }

233. else

234. LcdWriteDat(*str++); //先取str指向的数据，然后str自加1

235. n++;

236.

237. if((n+2*column)%16==0)

238. {

239. a=(n+2*column)/16;

240. if(row==0)

241. {

242. if(a==1)

243. LcdWriteCmd(0x90);

244. if(a==2)

245. LcdWriteCmd(0x88);

246. if(a==3)

247. LcdWriteCmd(0x98);

248. if(a==4)

249. LcdWriteCmd(0x80);

250. }

251.

252. if(row==1)

253. {

254. if(a==1)

255. LcdWriteCmd(0x88);

256. if(a==2)

257. LcdWriteCmd(0x98);

258. if(a==3)

259. LcdWriteCmd(0x80);

260. if(a==4)

261. LcdWriteCmd(0x90);

262. }

263.

264. if(row==2)

265. {

266. if(a==1)

267. LcdWriteCmd(0x98);

268. if(a==2)

269. LcdWriteCmd(0x80);

270. if(a==3)

271. LcdWriteCmd(0x90);

272. if(a==4)

273. LcdWriteCmd(0x88);

274. }

275.

276. if(row==3)

277. {

278. if(a==1)

279. LcdWriteCmd(0x80);

280. if(a==2)

281. LcdWriteCmd(0x90);

282. if(a==3)

283. LcdWriteCmd(0x88);

284. if(a==4)

285. LcdWriteCmd(0x98);

286. }

287.

288.

289.

290. }

291. }

292. }/* 初始化1602液晶 */

293. void InitLcd1602()

294. {

295. LcdWriteCmd(0x38); //16*2显示，5*7点阵，8位数据接口

296. LcdWriteCmd(0x0C); //显示器开，光标关闭

297. LcdWriteCmd(0x06); //文字不动，地址自动+1

298. LcdWriteCmd(0x01); //清屏

299. }

300.

301.

302.

303.

304. /*

305. * 函数名：LcdShowImage

306. * 描 述：在显示屏上显示一幅图像

307. * 输入：img - 待显示图像指针

308. * x - 屏幕显示横坐标(以像素为单位)

309. * y - 屏幕显示纵坐标(以像素为单位)

310. * w - 图像宽度(以像素为单位)

311. * h - 图像高度(以像素为单位)

312. * 输 出：无

313. * 备注：x与w必须是16的整数倍，因CGRAM最小寻址单位为2字节；y与h可为0-63的任意值。

314. */

315.

316. //经过我的不断测试，y和h的值也是可以取到64，而且显示汉字，也得取到16而不是15，那么来说，是多少像素高度，这里就填多少

317. void LcdShowImage(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t *img)

318. {

319. uint16_t i;

320. uint8_t xi,yi;

321. uint8_t xt,yt;

322.

323. x>>= 4;

324. w>>= 3;

325. i = 0;

326. LcdWriteCmd(0x36); //启动CGRAM操作

327.

328. for (yi=0; yi<h; yi++)

329. {

330. yt= y+yi;

331. xt= x;

332. if (yt >= 32)

333. {

334. yt -= 32;

335. xt += 8;

336. }

337. LcdWriteCmd(0x80|yt);

338. LcdWriteCmd(0x80|xt);

339. for (xi=0; xi<w; xi++)

340. {

341. LcdWriteDat(img[i++]);

342. }

343. }

344. }

345.

346. /*

347. * 函数名：LcdClearArea

348. * 描 述：清除屏幕上的一块图形显示区域

349. * 输入：x - 区域起始横坐标(以像素为单位)

350. * y - 区域起始纵坐标(以像素为单位)

351. * w - 区域宽度(以像素为单位)

352. * h - 区域高度(以像素为单位)

353. * 输 出：无

354. * 备注：x与w必须是16的整数倍，因CGRAM最小寻址单位为2字节；y与h可为0-63的任意值。

355. */

356.

357.

358. //记住，绘图模式时候屏幕默认有乱点显示的数据的，需要我们先调用这个函数后面才能正常显示

359.

360. void LcdClearArea(uint8_t x, uint8_t y, uint8_t w, uint8_t h)

361. {

362. uint8_t xi,yi;

363. uint8_t xt,yt;

364.

365. x>>= 4;

366. w>>= 3;

367. LcdWriteCmd(0x36); //启动CGRAM操作

368. for (yi=0; yi<h; yi++)

369. {

370. yt= y+yi;

371. xt= x;

372. if (yt >= 32)

373. {

374. yt -= 32;

375. xt += 8;

376. }

377. LcdWriteCmd(0x80|yt);

378. LcdWriteCmd(0x80|xt);

379. for (xi=0; xi<w; xi++)

380. {

381. LcdWriteDat(0x00); //写入0x00以清除显示

382. }

383. }

384. }

385.

主函数main（）中这样调用即可：

1. void main()

2. {

3. LCD12864IO_Init(void);

4. // 为什么驱动函数会出现1602的字样，因为这个LCD12864的驱动程序我是从1602液晶屏移植过来的，

5. // 只是忘记改了名字而已，就这样吧

6. InitLcd1602(void);

7. LcdShowStr(1,1,"hello 你好");

8. while(1);

9. }

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