基于小凌派开发板的迪文屏控制案例

前言：因2个原因导致迟迟没有出来想要的效果。原因1：迪文屏的中文字库问题，对CFG文件及FLASH的分配不熟，导致icl文件覆盖了字库文件，在迪文论坛发帖解决。原因2：串口线不能2节连接，我测试一直2节杜邦线连接，导致rk2206发不出数据，用串口demo测试，只有一节杜邦线电脑才能接到数据，弄了一节将两个板子连接终于可以了。

1

迪文屏方面

1、用dgus软件设计的欢迎使用界面中生成0号字库和GBK字库，如图1所示，点击DGUS字库，出现如图2所示，生成0号ASCII字库。

图1 dgus字库生成

图2 生成0号字库

2、下面就来生成GBK汉字库，如图3和图4所示，生成的24宋体24.bin字库。

图3 GBK字库

图4 生成汉字库gbk

3、接下来，新建GUI工程，选一张480*854的背景图，如图5所示，保存位置确定。

图5 新建GUI工程

4、网上找了9张图标，其中自己用位图编辑了一遍，想多大自己设置即可，用DWIN ICL生成工具生成图标icl，如图6所示

图6 生成图标icl

图7 导入生成

5、生成背景icl一样。注意：软件默认背景图为32.icl，生成CFG文件时需要修改。这个根据屏的flash大小设置，我的屏只有8M，因此最大为30，32超出了出现了问题。

6、在背景图上放置一个图标控件和2个text控件，如图8所示，text地址设置2000，另一个设置2064。设置TEXT的属性，ASCII选择0号字库，汉字库选24号字库，编码选择GBK编码，后面的X和Y点阵设置为24点阵。这个点阵数根据自己字库生成的点阵设置。使用出厂的字库，则分别为0号字库和12汉字库。配置为0和12即可。

图8 放置显示控件

图9 text设置属性

7、设置变量图标显示属性，如图10所示，从0开始到8共9个变量图标。

图10 变量图标显示设置

最后生成即可。

2

T5L51方面

1、因我刷过T5L51，所以串口2调试协议不通，只能重刷出厂程序或者自己写程序。我自己写的程序，在熊家余老师的串口程序基础上写自己的接收代码，main函数如下代码：

#include "sys.h"#include "uart2.h"#include "string.h"
#define FIRST_TXT  "手势结果：" //必须以两个字节的0x00或者两个字节的0xFF为文本结束标记
void main(void){      u16 len;    s16 ges;    u8 text_buf[32]={0};    u16 ic_sta;//存储ICON值    sys_init();//系统初始化        sys_write_vp(0x2000,FIRST_TXT,sizeof(FIRST_TXT)/2+1);//给第一个文本显示控件设置文本内容        uart2_init(115200);//初始化串口2        while(1)    {          IF(uart2_rx_sta&UART2_PACKET_OK)//接受到了串口数据包        {            len = uart2_rx_sta&UART2_PACKET_LEN;//得到串口数据包的长度,不包含"
"或者'
'结束符的长度                        ges = uart2_buf[0]+uart2_buf[1]*256;            switch(ges)            {                case 1:                    ic_sta = 0;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_UP:0x%x",ges);                break;                case 2:                    ic_sta = 1;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_DOWN:0x%x",ges);                break;                case 4:                    ic_sta = 2;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                    sprintf(text_buf,"GES_LEFT:0x%x",ges);                break;                case 8:                    ic_sta = 3;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_RIGHT:0x%x",ges);                break;                case 16:                    ic_sta = 4;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_FORWARD:0x%x",ges);                break;                case 32:                    ic_sta = 5;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_BACKWARD:0x%x",ges);                break;                case 64:                    ic_sta = 6;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_clockWISE:0x%x",ges);                break;                case 128:                    ic_sta = 7;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_COUNT_CLOCKWISE:0x%x",ges);                break;                case 256:                    ic_sta = 8;                    sys_write_vp(0x1000,(u8*)&ic_sta,1);                 sprintf(text_buf,"GES_WAVE:0x%x",ges);                break;                default:                                        break;            }            len = strlen(text_buf);            text_buf[len++] = 0;            text_buf[len++] = 0;            sys_write_vp(0x2064,text_buf,len/2+1);//同时把数据包显示到界面上                        uart2_rx_sta = 0;//清0代表处理掉了此串口包        }    }}

（左右移动查看全部内容）

3

小凌派方面

根据手势demo将uart的demo加入到手势demo.rar中，如下所示

/** Copyright (c) 2022 FuZhou Lockzhiner Electronic Co., Ltd. All rights reserved.* Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**   http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/#include #include "los_task.h"#include "ohos_init.h"#include "lz_hardware.h"#include "e53_gesture_sensor.h"
/* E53模块中* UART0_RX_M0 -> GPIO0_B6* UART0_TX_M0 -> GPIO0_B7*/#define UART_ID         0
unsigned short getCRC16(unsigned char *ptr,unsigned char len){        unsigned char i;        unsigned short crc = 0xFFFF;                if(ptr==0)        {                return 0;        }        if(len==0)        {            len = 1;        }        //if(len<=255)        {                while(len--)                {                        crc ^= *ptr;                        for(i=0; i<8; i++)                        {                            if(crc&1)                            {                                crc >>= 1;                                crc ^= 0xA001;                            }                            else                                crc >>= 1;                        }                        ptr++;                }        }        return(crc);}void uart0_init(void){  unsigned int ret;  UartAttribute attr;    LzUartDeinit(UART_ID);    attr.baudRate = 115200;  attr.dataBits = UART_DATA_BIT_8;  attr.pad = FLOW_CTRL_NONE;  attr.parity = UART_PARITY_NONE;  attr.rxBlock = UART_BLOCK_STATE_NONE_BLOCK;  attr.stopBits = UART_STOP_BIT_1;  attr.txBlock = UART_BLOCK_STATE_NONE_BLOCK;    PinctrlSet(GPIO0_PB6, MUX_FUNC2, PULL_KEEP, DRIVE_LEVEL2);  PinctrlSet(GPIO0_PB7, MUX_FUNC2, PULL_KEEP, DRIVE_LEVEL2);    ret = LzUartInit(UART_ID, &attr);  if (ret != LZ_HARDWARE_SUCCESS)  {    printf("%s, %d: LzUartInit(%d) faiLED!
", __FILE__, __LINE__, ret);    return;  }    return;}void e53_gs_process(void *arg){  unsigned int ret = 0;        unsigned int i=0;  unsigned short flag = 0;        unsigned short rc = 0;  unsigned char tubiao[16] = {0};        unsigned char tubiao_str[48] = {0};    e53_gs_init();  uart0_init();          ret = LzUartWrite(UART_ID, tubiao, 4);  if (ret != LZ_HARDWARE_SUCCESS)  {    printf("%s, %d: LzUartInit(%d) failed!
", __FILE__, __LINE__, ret);    return;  }    while (1)  {    ret = e53_gs_get_gesture_state(&flag);    if (ret != 0)    {      printf("Get Gesture Statu: 0x%x
", flag);      if (flag & GES_UP)      {        printf("	Up
");      }      if (flag & GES_DOWM)      {        printf("	Down
");      }      if (flag & GES_LEFT)      {        printf("	Left
");      }      if (flag & GES_RIGHT)      {        printf("	Right
");      }      if (flag & GES_FORWARD)      {        printf("	Forward
");      }      if (flag & GES_BACKWARD)      {        printf("	Backward
");      }      if (flag & GES_CLOCKWISE)      {        printf("	Clockwise
");      }      if (flag & GES_COUNT_CLOCKWISE)      {        printf("	Count Clockwise
");      }      if (flag & GES_WAVE)      {        printf("	Wave
");      }            e53_gs_led_up_set((flag & GES_UP) ? (1) : (0));      e53_gs_led_down_set((flag & GES_DOWM) ? (1) : (0));      e53_gs_led_left_set((flag & GES_LEFT) ? (1) : (0));      e53_gs_led_right_set((flag & GES_RIGHT) ? (1) : (0));      e53_gs_led_forward_set((flag & GES_FORWARD) ? (1) : (0));      e53_gs_led_backward_set((flag & GES_BACKWARD) ? (1) : (0));      e53_gs_led_cw_set((flag & GES_CLOCKWISE) ? (1) : (0));      e53_gs_led_ccw_set((flag & GES_COUNT_CLOCKWISE) ? (1) : (0));      e53_gs_led_wave_set((flag & GES_WAVE) ? (1) : (0));            tubiao[0] = flag;      tubiao[1] = (flag&0xff00)>>8;      tubiao[2] = '
';      tubiao[3] = '
';                        printf("tubiao：
");                        for(i=0;i<4;i++) {                            sprintf(tubiao_str+i*3, "%02X ", tubiao[i] & 0xFF);                        }                        printf("DOWN HEX: %s", tubiao_str);                        printf("
");      ret = LzUartWrite(UART_ID, tubiao, 4);      if (ret != LZ_HARDWARE_SUCCESS)      {        printf("%s, %d: LzUartInit(%d) failed!
", __FILE__, __LINE__, ret);        return;      }    }    else    {      /* 如果没有数据，则多等待 */      LOS_Msleep(100);    }  }}
void e53_gs_example(){  unsigned int thread_id;  TSK_INIT_PARAM_S task = {0};  unsigned int ret = LOS_OK;
  task.pfnTaskEntry = (TSK_ENTRY_FUNC)e53_gs_process;  task.uwStackSize = 2048;  task.pcName = "e53 getsture sensor process";  task.usTaskPrio = 24;  ret = LOS_TaskCreate(&thread_id, &task);  if (ret != LOS_OK)  {    printf("Falied to create Task_One ret:0x%x
", ret);    return;  }}
APP_FEATURE_INIT(e53_gs_example);

（左右移动查看全部内容）

测试：测试的时候总是控制不了，用小凌派的串口发给电脑串口，也没有。不应该，人家厂家肯定没问题。本来2节杜邦线，改成了1节杜邦线，可以了。

原文标题：如何用小凌派鸿蒙开发板轻松控制迪文智能屏？

文章出处：【微信公众号：HarmonyOS官方合作社区】欢迎添加关注！文章转载请注明出处。

审核编辑：汤梓红