BK7231+字库+LCD显示

1、BK7231有2M flash，可以保存1个16*16汉字字库

2、驱动1个8位并口屏，将字库中的汉字中显示出来

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一、将gb2312_80.bin打包到烧录镜像中。

1、bk7231u_rtt_sdk\OTAPackage\beken_packager中修改config.json文件：

{"magic": "RT-Thread","version": "0.1","count": 3,"section": [{"firmware": "bootloader_bk7231_ottime_v2.0.bin","version": "0.1.3","partition": "bootloader","start_addr": "0x00000000","size": "68K"},{"firmware": "../../rtthread.bin","version": "0.1.15","partition": "app","start_addr": "0x00011000","size": "1156K"},{"firmware": "gb2312_80.bin","version": "0.0.2","partition": "romfs","start_addr": "0x000D0000","size": "239K"}]
}

 其中，gb2312_80.bin是16*16汉字GB2312库，可以通过高通字库软件生成。

这样再运行beken_packager.exe可以把字库文件打包到用于下载FLASH的镜像文件中。

字库文件的起始地址是0xD0000。

二、 用于LCD显示及字库读取的程序

drv_lcd.c

#include <rtdevice.h>
#include <string.h>
#include <stdio.h>
#include <time.h>
#include "drv_lcd.h"
#include "drv_lcd_font.h"
#include "drv_gpio.h"#include "drv_flash.h"
#include "charcode.h"#define DBG_SECTION_NAME    "LCD"
#define DBG_COLOR
#define DBG_LEVEL           DBG_LOG
#include <rtdbg.h>#define LCD_CS_PIN  16
#define LCD_RS_PIN  23
#define LCD_WR_PIN  22
#define LCD_RD_PIN  20
#define LCD_RST_PIN 14#define LCD_DB0_PIN 11
#define LCD_DB1_PIN 9
#define LCD_DB2_PIN 17
#define LCD_DB3_PIN 8
#define LCD_DB4_PIN 7
#define LCD_DB5_PIN 24
#define LCD_DB6_PIN 26
#define LCD_DB7_PIN 28#define LCD_CS_SET rt_pin_write(LCD_CS_PIN, PIN_HIGH)
#define LCD_CS_CLR rt_pin_write(LCD_CS_PIN, PIN_LOW)#define LCD_RS_SET rt_pin_write(LCD_RS_PIN, PIN_HIGH)
#define LCD_RS_CLR rt_pin_write(LCD_RS_PIN, PIN_LOW)#define LCD_WR_SET rt_pin_write(LCD_WR_PIN, PIN_HIGH)
#define LCD_WR_CLR rt_pin_write(LCD_WR_PIN, PIN_LOW)#define LCD_RD_SET rt_pin_write(LCD_RD_PIN, PIN_HIGH)
#define LCD_RD_CLR rt_pin_write(LCD_RD_PIN, PIN_LOW)#define LCD_RST_SET rt_pin_write(LCD_RST_PIN, PIN_HIGH)
#define LCD_RST_CLR rt_pin_write(LCD_RST_PIN, PIN_LOW)#define LCD_CLEAR_SEND_NUMBER LCD_W*LCD_Hrt_uint16_t BACK_COLOR =  BLUE, FORE_COLOR =WHITE;
rt_thread_t tid = RT_NULL;#define FLASH_ADDR_BASE			 0x000D0000rt_uint32_t flash_addr_base=0xD0000;
rt_uint32_t zkoffset=0;
//字模buff
rt_uint8_t MatrixBuff[32];void getMatrix(const rt_uint16_t nmCode)
{rt_uint8_t i;rt_uint32_t offset;rt_uint8_t GBH,GBL;rt_uint16_t nm=nmCode;GBH=nm>>8&0xff;GBL=nm&0xff;//rt_kprintf("GB=%c%c\r\n",GBH,GBL);if(GBH>=0xb0){offset=((GBH-0xa7)*94+GBL-0xa1)*34;}else{offset=((GBH-0xa1)*94+GBL-0xa1)*34;}//rt_kprintf("offset=%4x\r\n",offset);//memcpy(Buff,(rt_uint8_t *)(p_ZK_ADDR+offset),1);
/*for(i=0;i<32;i++){rt_thread_mdelay(40);Buff[i]=*(p_ZK_ADDR+offset+i);//MatrixBuff[i]=*(FLASH_ADDR_BASE+offset+i);rt_kprintf("%d:=%2x\r\n",i,Buff[i]);}
*///for(i=0;i<32;i++){//memcpy(&Buff,(rt_uint8_t *)(p_ZK_ADDR+offset+i*32),1);beken_flash_read(FLASH_ADDR_BASE+offset,(rt_uint8_t*)MatrixBuff,32);//rt_kprintf("0x%2X,",Buff);//}}static int rt_hw_lcd_config(void)
{return RT_EOK;
}void LCD_Set_Port8(const rt_uint8_t dat)
{rt_pin_write(LCD_DB0_PIN,(dat&0x01)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB1_PIN,(dat&0x02)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB2_PIN,(dat&0x04)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB3_PIN,(dat&0x08)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB4_PIN,(dat&0x10)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB5_PIN,(dat&0x20)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB6_PIN,(dat&0x40)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB7_PIN,(dat&0x80)?PIN_HIGH:PIN_LOW);LCD_WR_CLR;LCD_WR_SET;}void gpio_lcd_write_data(const rt_uint8_t *dat, size_t size) {LCD_RD_SET;for (int i=0;i<size;i++) {rt_pin_write(LCD_DB0_PIN,(dat[i]&0x01)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB1_PIN,(dat[i]&0x02)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB2_PIN,(dat[i]&0x04)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB3_PIN,(dat[i]&0x08)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB4_PIN,(dat[i]&0x10)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB5_PIN,(dat[i]&0x20)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB6_PIN,(dat[i]&0x40)?PIN_HIGH:PIN_LOW);rt_pin_write(LCD_DB7_PIN,(dat[i]&0x80)?PIN_HIGH:PIN_LOW);LCD_WR_CLR;LCD_WR_SET;}
}static void lcd_write_cmd(const rt_uint8_t cmd)
{LCD_CS_CLR;LCD_RS_CLR;     //RS=0,命令LCD_Set_Port8(cmd);LCD_CS_SET;//return RT_EOK;
}static void lcd_write_data(const rt_uint8_t data)
{LCD_Set_Port8(data);
}static rt_err_t lcd_write_half_word(const rt_uint16_t da)
{rt_size_t i;rt_uint8_t data[2] = {0};data[0] = (da >> 8)&0xff;data[1] = da&0xff;LCD_CS_CLR;LCD_RS_SET;     //RS=1,数据for(i=0;i<2;i++) {LCD_Set_Port8(data[i]);}LCD_CS_SET;return RT_EOK;
}void lcd_write_comm_word(const rt_uint16_t  cmd)
{rt_uint8_t c[2];c[0] = (cmd >> 8) & 0xFF;c[1] = cmd & 0xFF;LCD_CS_CLR;LCD_RS_CLR;gpio_lcd_write_data(c, 2);LCD_CS_SET;
}void lcd_write_data_word(const rt_uint16_t  data)
{rt_uint8_t c[2];c[0] = (data >> 8) & 0xFF;c[1] = data & 0xFF;LCD_CS_CLR;LCD_RS_SET;gpio_lcd_write_data(c, 2);LCD_CS_SET;
}static void lcd_write_register_word(const rt_uint8_t cmd,const rt_uint16_t data)
{LCD_RD_SET;lcd_write_comm_word(cmd);LCD_RD_SET;lcd_write_data_word(data);
}void lcd_gpio_init(void)
{rt_pin_mode(LCD_CS_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_RS_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_WR_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_RST_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_RD_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB0_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB1_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB2_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB3_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB4_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB5_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB6_PIN, PIN_MODE_OUTPUT);rt_pin_mode(LCD_DB7_PIN, PIN_MODE_OUTPUT);LCD_RD_SET;rt_pin_write(LCD_RST_PIN, PIN_LOW);//wait at least 100ms for resetrt_thread_delay(RT_TICK_PER_SECOND / 10);rt_pin_write(LCD_RST_PIN, PIN_HIGH);rt_kprintf("lcd_gpio_init\n");
}int rt_hw_lcd_init(void)
{lcd_gpio_init();LCD_CS_CLR;lcd_write_register_word(0x10, 0x0000);lcd_write_register_word(0x11, 0x0000);lcd_write_register_word(0x12, 0x0000);lcd_write_register_word(0x13, 0x0000);lcd_write_register_word(0x14, 0x0000);rt_thread_mdelay(40);lcd_write_register_word(0x11, 0x0018);lcd_write_register_word(0x12, 0x6121);lcd_write_register_word(0x13, 0x006F);lcd_write_register_word(0x14, 0x495F);lcd_write_register_word(0x10, 0x0800);rt_thread_mdelay(10);lcd_write_register_word(0x11, 0x103B);rt_thread_mdelay(50);lcd_write_register_word(0x01, 0x021C);lcd_write_register_word(0x02, 0x0100);lcd_write_register_word(0x03, 0x1030);lcd_write_register_word(0x07, 0x0000);lcd_write_register_word(0x08, 0x0808);lcd_write_register_word(0x0b, 0x1100);lcd_write_register_word(0x0c, 0x0000);lcd_write_register_word(0x0f, 0x0D01);lcd_write_register_word(0x15, 0x0020);lcd_write_register_word(0x20, 0x0000);lcd_write_register_word(0x21, 0x0000);lcd_write_register_word(0x30, 0x0000);lcd_write_register_word(0x31, 0x00DB);lcd_write_register_word(0x32, 0x0000);lcd_write_register_word(0x33, 0x0000);lcd_write_register_word(0x34, 0x00DB);lcd_write_register_word(0x35, 0x0000);lcd_write_register_word(0x36, 0x00AF);lcd_write_register_word(0x37, 0x0000);lcd_write_register_word(0x38, 0x00DB);lcd_write_register_word(0x39, 0x0000);lcd_write_register_word(0x50, 0x0000);lcd_write_register_word(0x51, 0x0808);lcd_write_register_word(0x52, 0x080A);lcd_write_register_word(0x53, 0x000A);lcd_write_register_word(0x54, 0x0A08);lcd_write_register_word(0x55, 0x0808);lcd_write_register_word(0x56, 0x0000);lcd_write_register_word(0x57, 0x0A00);lcd_write_register_word(0x58, 0x0710);lcd_write_register_word(0x59, 0x0710);lcd_write_register_word(0x07, 0x0012);rt_thread_mdelay(50);lcd_write_register_word(0x07, 0x1017);lcd_write_cmd(0x22);rt_thread_mdelay(50);LCD_CS_SET;rt_kprintf("rt_hw_lcd_init\r\n");lcd_clear(BLUE);GUI_Write16CnCharMatrix(56,0,"念头通达",YELLOW,BLUE);GUI_Write16CnCharMatrix(0,17,"人生苦短，终归尘土",YELLOW,BLUE);GUI_Write16CnCharMatrix(0,34,"凭什么仙家",YELLOW,BLUE);GUI_Write16CnCharMatrix(0,51,"就可以遨游天地，",YELLOW,BLUE);GUI_Write16CnCharMatrix(0,68,"而我等凡人",YELLOW,BLUE);GUI_Write16CnCharMatrix(0,85,"只能做这井底之蛙？",YELLOW,BLUE);rt_thread_mdelay(2000);return RT_EOK;
}
//INIT_DEVICE_EXPORT(rt_hw_lcd_init);/*** Set background color and foreground color** @param   back    background color* @param   fore    fore color** @return  void*/
void lcd_set_color(rt_uint16_t back, rt_uint16_t fore)
{BACK_COLOR = back;FORE_COLOR = fore;
}/*** Set drawing area** @param   x1      start of x position* @param   y1      start of y position* @param   x2      end of x position* @param   y2      end of y position** @return  void*/
void lcd_address_set(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2)
{lcd_write_register_word(0x36,x2);lcd_write_register_word(0x37,x1);lcd_write_register_word(0x38,y2);lcd_write_register_word(0x39,y1);lcd_write_register_word(0x20,x1);lcd_write_register_word(0x21,y1);lcd_write_cmd(0x22);
}/*** clear the lcd.** @param   color       Fill color** @return  void*/
void lcd_clear(rt_uint16_t color)
{rt_uint16_t i, j;rt_uint8_t data[2] = {0};data[0] = color >> 8;data[1] = color;lcd_address_set(0, 0, LCD_W - 1, LCD_H - 1);LCD_CS_CLR;LCD_RS_SET;if(data[0]==data[1]){LCD_Set_Port8(data[0]);for(j = 0;j < LCD_H;j++){for (i = 0; i < LCD_W; i++){LCD_WR_CLR;LCD_WR_SET;LCD_WR_CLR;LCD_WR_SET;}}}else{for(j = 0;j < LCD_H;j++){for (i = 0; i < LCD_W; i++){LCD_Set_Port8(data[0]);LCD_Set_Port8(data[1]);}}}LCD_CS_SET;rt_kprintf("lcd_clear\n");
}/*** display a point on the lcd.** @param   x   x position* @param   y   y position** @return  void*/
void lcd_draw_point(rt_uint16_t x, rt_uint16_t y)
{lcd_address_set(x, y, x, y);lcd_write_half_word(FORE_COLOR);
}/*** display a point on the lcd using the given colour.** @param   x       x position* @param   y       y position* @param   color   color of point** @return  void*/
void lcd_draw_point_color(rt_uint16_t x, rt_uint16_t y, rt_uint16_t color)
{lcd_address_set(x, y, x, y);lcd_write_half_word(color);
}/*** full color on the lcd.** @param   x_start     start of x position* @param   y_start     start of y position* @param   x_end       end of x position* @param   y_end       end of y position* @param   color       Fill color** @return  void/*** display a line on the lcd.** @param   x1      x1 position* @param   y1      y1 position* @param   x2      x2 position* @param   y2      y2 position** @return  void*/
void lcd_draw_line(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2)
{}/*** display a rectangle on the lcd.** @param   x1      x1 position* @param   y1      y1 position* @param   x2      x2 position* @param   y2      y2 position** @return  void*/
void lcd_draw_rectangle(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2)
{lcd_draw_line(x1, y1, x2, y1);lcd_draw_line(x1, y1, x1, y2);lcd_draw_line(x1, y2, x2, y2);lcd_draw_line(x2, y1, x2, y2);
}/*** display a circle on the lcd.** @param   x       x position of Center* @param   y       y position of Center* @param   r       radius** @return  void*/
void lcd_draw_circle(rt_uint16_t x0, rt_uint16_t y0, rt_uint8_t r)
{int a, b;int di;a = 0;b = r;di = 3 - (r << 1);while (a <= b){lcd_draw_point(x0 - b, y0 - a);lcd_draw_point(x0 + b, y0 - a);lcd_draw_point(x0 - a, y0 + b);lcd_draw_point(x0 - b, y0 - a);lcd_draw_point(x0 - a, y0 - b);lcd_draw_point(x0 + b, y0 + a);lcd_draw_point(x0 + a, y0 - b);lcd_draw_point(x0 + a, y0 + b);lcd_draw_point(x0 - b, y0 + a);a++;//Bresenhamif (di < 0)di += 4 * a + 6;else{di += 10 + 4 * (a - b);b--;}lcd_draw_point(x0 + a, y0 + b);}
}static void lcd_show_char(rt_uint16_t x, rt_uint16_t y, rt_uint8_t data, rt_uint32_t size)
{rt_uint8_t temp;rt_uint8_t num = 0;;rt_uint8_t pos, t;rt_uint16_t colortemp = FORE_COLOR;rt_uint8_t *font_buf = RT_NULL;if (x > LCD_W - size / 2 || y > LCD_H - size)return;data = data - ' ';if (size == 16){lcd_address_set(x, y, x + size / 2 - 1, y + size - 1);//(x,y,x+8-1,y+16-1)/* fast show char */for (pos = 0; pos < size * (size / 2) / 8; pos++){temp = asc2_1608[(rt_uint16_t)data * size * (size / 2) / 8 + pos];for (t = 0; t < 8; t++){if (temp & 0x80)colortemp = FORE_COLOR;else colortemp = BACK_COLOR;lcd_write_half_word(colortemp);temp <<= 1;}}}}/*** display the string on the lcd.** @param   x       x position* @param   y       y position* @param   size    size of font* @param   p       the string to be display** @return   0: display success*          -1: size of font is not support*/
rt_err_t lcd_show_string(rt_uint16_t x, rt_uint16_t y, rt_uint32_t size, const char *fmt, ...)
{
#define LCD_STRING_BUF_LEN 128va_list args;rt_uint8_t buf[LCD_STRING_BUF_LEN] = {0};rt_uint8_t *p = RT_NULL;if (size != 16 && size != 24 && size != 32){LOG_E("font size(%d) is not support!", size);return -RT_ERROR;}va_start(args, fmt);rt_vsnprintf((char *)buf, 100, (const char *)fmt, args);va_end(args);p = buf;while (*p != '\0'){if (x > LCD_W - size / 2){x = 0;y += size;}if (y > LCD_H - size){y = x = 0;lcd_clear(RED);}lcd_show_char(x, y, *p, size);x += size / 2;p++;}return RT_EOK;
}/*** display the number on the lcd.** @param   x       x position* @param   y       y position* @param   num     number* @param   len     length of number* @param   size    size of font** @return  void*/
void lcd_show_num(rt_uint16_t x, rt_uint16_t y, rt_uint32_t num, rt_uint8_t len, rt_uint32_t size)
{lcd_show_string(x, y, size, "%d", num);
}/*** display the string on the lcd.** @param   x       x position* @param   y       y position* @param   size    size of font* @param   p       the string to be display** @return   0: display success*          -1: size of font is not support*//*** display the image on the lcd.** @param   x       x position* @param   y       y position* @param   length  length of image* @param   wide    wide of image* @param   p       image** @return   0: display success*          -1: the image is too large*/
rt_err_t lcd_show_image(rt_uint16_t x, rt_uint16_t y, rt_uint16_t length, rt_uint16_t wide, const rt_uint8_t *p)
{return RT_EOK;
}void GUI_Write16CnCharMatrix(rt_uint16_t x, rt_uint16_t y,const rt_uint8_t *cn, rt_uint16_t wordColor, rt_uint16_t backColor)
{rt_uint16_t i, j, wordNum,mx,my;rt_uint16_t zm;rt_uint16_t color;mx=x;my=y;while (*cn != '\0'){if(*cn<128){lcd_show_char(mx,my,*cn,16);mx+= 8;cn+=1;continue;}lcd_address_set(mx, my, mx+15, my+15);zm=*cn;zm<<=8;zm|=*(cn+1);getMatrix(zm);for(i=0; i<32; i++){   //MSK的位数color=MatrixBuff[i];for(j=0;j<8;j++){if((color&0x80)==0x80){lcd_write_data_word(wordColor);}else{lcd_write_data_word(backColor);}color<<=1;}//for(j=0;j<8;j++)结束}cn += 2;mx += 16;}
}void GUI_Write16CnChar(rt_uint16_t x, rt_uint16_t y, const unsigned char *cn, rt_uint16_t wordColor, rt_uint16_t backColor)
{rt_uint8_t i, j, wordNum;rt_uint8_t color;rt_uint8_t buf[100] = {0};rt_uint8_t *p = RT_NULL;rt_sprintf((char *)buf, "%s", cn);//rt_kprintf("[GUI_Write16CnChar]:%s\r\n",buf);p = buf;while (*p != '\0'){//rt_kprintf("p: %c%c,",(unsigned char *)*p,(unsigned char *)*(p+1));lcd_address_set(x, y, x+15, y+15);for (wordNum=0; wordNum<(sizeof(CnChar16x16) / sizeof(CnChar16x16[0])); wordNum++){   //wordNum扫描字库的字数if ((CnChar16x16[wordNum].Index[0]==*p)&&(CnChar16x16[wordNum].Index[1]==*(p+1))){for(i=0; i<32; i++){   //MSK的位数color=CnChar16x16[wordNum].Msk[i];for(j=0;j<8;j++){if(color&0x80){lcd_write_data_word(wordColor);}else{lcd_write_data_word(backColor);}color<<=1;}//for(j=0;j<8;j++)结束}}} //for (wordNum=0; wordNum<20; wordNum++)结束p += 2;x += 16;}
}void GUI_Write16CnCharTest(rt_uint16_t x, rt_uint16_t y, rt_uint16_t wordColor, rt_uint16_t backColor)
{rt_uint16_t i, j;unsigned char color;lcd_address_set(x, y, x+15, y+15);//rt_kprintf("");for(i=0; i<32; i++){   //MSK的位数color=MatrixBuff[i];//rt_kprintf("0x%02X,",color);for(j=0;j<8;j++){if(color&0x80){lcd_write_data_word(wordColor);}else{lcd_write_data_word(backColor);}color<<=1;}//for(j=0;j<8;j++)结束}//rt_kprintf("\r\n");}void lcd_thread_entry(void *parameter)
{rt_uint8_t i,j,k;rt_hw_lcd_init();rt_uint32_t address;time_t now;struct tm *tm;char result[20];while(1){now = time(RT_NULL);tm = localtime(&now);sprintf(result, "%02d时%02d分%02d秒",tm->tm_hour, tm->tm_min, tm->tm_sec);GUI_Write16CnCharMatrix(40,83+34,result,MAGENTA,BLUE);sprintf(result, "%04d年%02d月%02d日",tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);GUI_Write16CnCharMatrix(39,85+17,result,MAGENTA,BLUE);rt_thread_delay(rt_tick_from_millisecond(1000));}}int lcd_sample(void)
{tid = rt_thread_create("lcd",lcd_thread_entry,RT_NULL,1024*100,1,5);if (tid != RT_NULL)rt_thread_startup(tid);return 0;
}int lcd_del(void)
{rt_thread_delete(tid);return 0;
}FINSH_FUNCTION_EXPORT_ALIAS(lcd_sample, __cmd_lcd, lcd sample);
FINSH_FUNCTION_EXPORT_ALIAS(lcd_del, __cmd_lcddel, lcd_del sample );

drv_lcd.h

#ifndef __DRV_LCD_H__
#define __DRV_LCD_H__#include <rtthread.h>
#ifdef PKG_USING_QRCODE
#include <qrcode.h>
#endif#define LCD_W 176
#define LCD_H 220//POINT_COLOR
#define WHITE            0xFFFF
#define BLACK            0x0000
#define BLUE             0x001F
#define BRED             0XF81F
#define GRED             0XFFE0
#define GBLUE            0X07FF
#define RED              0xF800
#define MAGENTA          0xF81F
#define GREEN            0x07E0
#define CYAN             0x7FFF
#define YELLOW           0xFFE0
#define BROWN            0XBC40
#define BRRED            0XFC07
#define GRAY             0X8430
#define GRAY175          0XAD75
#define GRAY151          0X94B2
#define GRAY187          0XBDD7
#define GRAY240          0XF79Eint rt_hw_lcd_init(void);
void lcd_gpio_init(void);
void lcd_clear(rt_uint16_t color);
void lcd_address_set(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2);
void lcd_set_color(rt_uint16_t back, rt_uint16_t fore);void lcd_draw_point(rt_uint16_t x, rt_uint16_t y);
void lcd_draw_point_color(rt_uint16_t x, rt_uint16_t y, rt_uint16_t color);
void lcd_draw_circle(rt_uint16_t x0, rt_uint16_t y0, rt_uint8_t r);
// void lcd_draw_line(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2);
// void lcd_draw_rectangle(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2);
// void lcd_fill(rt_uint16_t x_start, rt_uint16_t y_start, rt_uint16_t x_end, rt_uint16_t y_end, rt_uint16_t color);void GUI_Write16CnChar(rt_uint16_t x, rt_uint16_t y, const unsigned char *cn, rt_uint16_t wordColor, rt_uint16_t backColor);
void GUI_Write16CnCharMatrix(rt_uint16_t x, rt_uint16_t y,const rt_uint8_t *cn, rt_uint16_t wordColor, rt_uint16_t backColor);
void lcd_show_num(rt_uint16_t x, rt_uint16_t y, rt_uint32_t num, rt_uint8_t len, rt_uint32_t size);
rt_err_t lcd_show_string(rt_uint16_t x, rt_uint16_t y, rt_uint32_t size, const char *fmt, ...);
// rt_err_t lcd_show_image(rt_uint16_t x, rt_uint16_t y, rt_uint16_t length, rt_uint16_t wide, const rt_uint8_t *p);
#ifdef PKG_USING_QRCODE
rt_err_t lcd_show_qrcode(rt_uint16_t x, rt_uint16_t y, rt_uint8_t version, rt_uint8_t ecc, const char *data, rt_uint8_t enlargement);
#endifvoid lcd_enter_sleep(void);
void lcd_exit_sleep(void);
void lcd_display_on(void);
void lcd_display_off(void);#endif

三、总结

1、这个字库偏移的计算公式：

    if(GBH>=0xb0)

    {

        offset=((GBH-0xa7)*94+GBL-0xa1)*34;

    }else

    {

        offset=((GBH-0xa1)*94+GBL-0xa1)*34;

    }

为什么是*34不是*32，可能是打包bin的时候，每32字节增加了2个字节校验位或者什么。对那个打包文件不太懂，反正跳过那多的2个字节就好了。

2、 drv_lcd.c、drv_lcd.h文件放在bk7231u_rtt_sdk\drivers中。

3、msh中键入lcd运行

msh />lcd
msh />

4、 user_app_start(void)中加入lcd_sample()可以在开机后直接驱动LCD显示

extern int lcd_sample(void);

void user_app_start(void)

{

    rt_hw_wdg_start(0, NULL);

    lcd_sample();         //前面加extern

}

5、**\bk7231u_rtt_sdk\beken378\app\config中sys_config.h需做如下修改：

#define CFG_JTAG_ENABLE                            0

这样JTAG的pin复用为普通GPIO ，用于LCD驱动。

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