更新SD卡文件列表到tablew中的list
#include"SD.h"#include"ff.h"#include"usart.h"#include<string.h>#include"lvgl.h"#include<stdio.h>// 全局 FatFs 对象和文件操作变量 FATFS fs;/* FatFs 文件系统对象 */ FIL fil;/* 文件对象 */ FRESULT fres;/* FatFs 函数返回结果 */// 文件列表存储char file_list[MAX_FILES][MAX_NAME_LEN];int file_count =0;// 打印文件信息（内部使用）staticvoidprint_file_info(FILINFO* fno);voidList_SD_Files(void){ DIR dir; FILINFO fno; UINT i =0;char path[]="0:";// 挂载文件系统 fres =f_mount(&fs, path,1);if(fres != FR_OK){HAL_UART_Transmit(&huart1,(uint8_t*)"failed",6,1000);return;}HAL_UART_Transmit(&huart1,(uint8_t*)"successful",10,1000);HAL_UART_Transmit(&huart1,(uint8_t*)"\r\n",2,1000);// 打开根目录 fres =f_opendir(&dir, path);if(fres != FR_OK){HAL_UART_Transmit(&huart1,(uint8_t*)"failedFF",8,1000);return;}// 读取目录项while(1){ fres =f_readdir(&dir,&fno);if(fres != FR_OK || fno.fname[0]==0)break;if(strcmp(fno.fname,".")==0||strcmp(fno.fname,"..")==0)continue;print_file_info(&fno);}// 清理资源f_closedir(&dir);f_mount(NULL, path,0);}staticvoidprint_file_info(FILINFO* fno){// 打印文件名HAL_UART_Transmit(&huart1,(uint8_t*)fno->fname,strlen(fno->fname),1000);strncpy(file_list[file_count], fno->fname, MAX_NAME_LEN -1); file_list[file_count][MAX_NAME_LEN -1]='\0'; file_count++;HAL_UART_Transmit(&huart1,(uint8_t*)"\r\n",2,1000);}intSD_ReadFile(char* flname){char path[]="0:";char line[100];// 挂载文件系统 fres =f_mount(&fs, path,1);if(fres != FR_OK)return(int)fres;// 打开文件 fres =f_open(&fil, flname, FA_READ);if(fres != FR_OK){f_mount(NULL, path,0);return(int)fres;}// 逐行读取while(f_gets(line,sizeof(line),&fil)){HAL_UART_Transmit(&huart1,(uint8_t*)line,strlen(line),1000);HAL_UART_Transmit(&huart1,(uint8_t*)"\r\n",2,1000);}// 关闭文件并卸载f_close(&fil);f_mount(NULL, path,0);return(int)fres;}intSD_WriteFile(char* newfname,char* data, UINT* bw){char path[]="0:"; UINT len =strlen(data);// 挂载文件系统 fres =f_mount(&fs, path,1);if(fres != FR_OK)return(int)fres;// 创建/打开文件 fres =f_open(&fil, newfname, FA_CREATE_ALWAYS | FA_WRITE | FA_READ);if(fres != FR_OK){f_mount(NULL, path,0);return(int)fres;}// 写入数据 fres =f_write(&fil, data, len, bw);if(fres == FR_OK){HAL_UART_Transmit(&huart1,(uint8_t*)"Write successful",16,1000);HAL_UART_Transmit(&huart1,(uint8_t*)"\r\n",2,1000);}else{HAL_UART_Transmit(&huart1,(uint8_t*)"Write failed",12,1000);HAL_UART_Transmit(&huart1,(uint8_t*)"\r\n",2,1000);}// 刷新并关闭f_sync(&fil);f_close(&fil);f_mount(NULL, path,0);return(int)fres;}// 将SD卡文件列表更新到LVGL界面 - 仅显示文件名voidUpdate_SD_Files_To_LVGL(lv_obj_t* tab_page){if(tab_page ==NULL){//HAL_UART_Transmit(&huart1, (uint8_t*)"Tab page is NULL\r\n", 18, 1000);return;}// 清除tab页面中的所有子对象lv_obj_clean(tab_page);// 为每个文件创建标签（只显示文件名）for(int i =1; i < file_count && i < MAX_FILES; i++){lv_obj_t* file_label =lv_label_create(tab_page);lv_label_set_text(file_label, file_list[i]);// 设置样式：文件名使用等宽字体lv_obj_set_style_text_font(file_label,&lv_font_montserrat_14,0);lv_obj_set_style_text_color(file_label,lv_color_hex(0x000000),0);// 垂直排列，每行间隔25像素lv_obj_align(file_label, LV_ALIGN_TOP_LEFT,10,10+(i *25));}// 如果没有文件，显示提示信息if(file_count ==0){lv_obj_t* no_file_label =lv_label_create(tab_page);lv_label_set_text(no_file_label,"No files found");lv_obj_set_style_text_color(no_file_label,lv_color_hex(0x888888),0);lv_obj_align(no_file_label, LV_ALIGN_CENTER,0,0);}//HAL_UART_Transmit(&huart1, (uint8_t*)"Files displayed on LVGL (only filenames)\r\n", 42, 1000);}.h
#ifndefFATFS_UTIL_H#defineFATFS_UTIL_H#include"ff.h"#include"main.h"#include"lvgl.h"#defineMAX_FILES500// 最大文件数#defineMAX_NAME_LEN50// 文件名最大长度（包含 '\0'）externchar file_list[MAX_FILES][MAX_NAME_LEN];externint file_count;voidList_SD_Files(void);intSD_ReadFile(char* flname);intSD_WriteFile(char* newfname,char* data, UINT* bw);// LVGL界面更新函数voidUpdate_SD_Files_To_LVGL(lv_obj_t* tabview);#endif/* FATFS_UTIL_H */调用List_SD_Files()后调用Update_SD_Files_To_LVGL(guider_ui.screen_1_list_1);即可显示,传入要传入的图框
