问答

用的是HC32F4A0，目前做了： [list=1] [*]在电脑上对SD卡格式化为Fat32格式 [*]为了确定写入了SD卡，而不是读取缓存。写入文件后，将文件关闭，再以READ模式打开，进行读取，也是可以读的。 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NN6j733lhHLMrJPdqRlr3LxSoVvcHLC611bjwdFSxp+gDxqKjYbLZbDQdLeN5NLtCqk0+DXuHV6vXYDa7+rrJF1A71NHXTVK1O7yy8PHK1mZw0Nea7b2arVRWS0KNKiWOiIhsfLZ6Zut0FTUqFUf7fpYXp2qJGx0OZ9tfncPhYb19lpLnNVvb9LQLanN/tJ4LzecFcSqKo04tNa6jj6fsWFVwMPf3FfPYLftpLBoKhQZov6WqKRIdeLJznx673MGIBQfdYdV7FAsOqvSI87C05qQ5NhNpyy+vfzwuW6JaiTO7RnhyZy4tljdqURY643gWmkteIE71EhfJn33QOTBTdF6P3W73ZMd6PPuHF3pmanV/tJ4LLTviVBZHk1rOq4pilM+035WTmJKldyzXupeOFrb1s/NTip5o3jyaql2rPyuKohiN8r2Zo7besWh2gqbAu2CuTj6usOfFyb8BknsZ03Vak3vlTfpFxzI1yl2Y5v0sK06p+1lmfSq5rgL/XG0K/mQWnmBVO6/ye9Q391yj+1P8XJS2I05lcVRViyUSiaLvTJO5ubmmpialJRAIbNmyheqVthgAALRQXcwA7zkAAIwMNA4AYGSgcQAAI5PTOLfbXXCs2AIAAMuLvHacUtQgcAAAA1DYV5WkDQIHADAGOY3jeV7akAVOtgAAwDIlrx2nFLXKBG55549bIL9YcV65sllq+bYQB3GMFEed4p8F7969e4Xmjyv1k3yVvHJls9TybSEO4hgpjv78cRV3UQ2QP07z0rTyypXzvupSy7eFOIhjpDhaIH9cLn9c3gFFH1Yrr1y1LLV8W4iDOEaKkwX543L547Tyi2nmlSOqLH8cAKBuIH9cLn9cvj2XX0wrr1z5LLV8W4iDOEaKow7yx+Xyx5WbX0wqr388bqnl20IcxDFSHE2QP04jT1zhXK9G6rLy8scttXxbiIM4RoqD/HEAACOD/HEAgBUHNA4AYGSgcQAAIwONAwAYGWgcAMDIQOMAAEYGGgcAMDI11rjlnT8uW8ZuL0yPUps8Vksv3xbiII6R4qhTy/cclnv+OFGM8r29/Fi06BWHSq6rmKWWbwtxEMdIcfTnj6uYZZ8/LuYZnN7ldXWY81+6L5nHCvnjEAdxlkQcLZA/TpE/LjodoRm5cxvUEuJK81jpjbPc83YhDuIshThZ/h9r7U9FwlK7hgAAAABJRU5ErkJggg==[/img] 但是把SD卡插到读卡器上，看到的就是空白。有没有大佬知道这是为什么 代码附上 #include "FileEdit.h" #include "ff.h" #include "stdio.h" #include "BSP_Timer_INT_Count.h" FATFS fsobject; FIL fp; BYTE work[FF_MAX_SS]; const char write_buf[] = "abcdefg"; char read_buf[FF_MAX_SS] = ""; UINT bw; UINT br; void FatFS_Test(void) { FRESULT res; /* 挂载文件系统 */ res = f_mount(&fsobject, "0:", 1); //挂载fsobject到文件系统、0: 存储器路径，也就是SD卡、1立即挂载 if(res != FR_OK) { res = f_mkfs("0:", 0, work, sizeof(work)); res = f_mount(NULL, "0:", 1); res = f_mount(&fsobject, "0:", 1); } /* 打开、创建文件 */ f_mkdir("0:/dir0"); res = f_open(&fp, "0:/dir0/qwerpoiu.txt", FA_CREATE_ALWAYS | FA_WRITE | FA_READ); if(res == LL_OK) { res = f_write(&fp, write_buf, sizeof(write_buf), &bw); f_close(&fp); res = f_open(&fp, "0:/dir0/qwerpoiu.txt", FA_READ); if(res==LL_OK) { f_lseek(&fp, 0); res = f_read(&fp, read_buf, f_size(&fp), &br); __nop(); } else f_close(&fp); } f_unmount("0:"); }[img]data:image/png;base64,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[/img]

我搞了一个新的pickit5，然后一通操作之后连接电脑指示灯不亮了。打开IPE之后把pickit5连上电脑，IPE直接闪退了

keil里的源程序发送到另一台电脑里重新运行，需要准备什么？怎么做？

设计的一款产品，底座和机器是分离的。机器用PIN针与底座相连可以实现充电和用底座连电脑传输数据。底座相当于充电宝功能。当初为了省成本，只设计了4个PIN针，分别是5V、D-、D+、GND。没有预留传输数据单独5V供电。现在模具已经开下去了，请问各位大神怎么在不改模的情况下，插入USB线能自动识别机器的存储设备。

想做个测试，搜索 [align=left]复制[/align] 一端是电脑，没有固定IP，可以装SIM的GPRS模块，没有云平台。 一端是终端设备，检测开关状态，通过GPRS模块上传到电脑上。 这样的条件能实现吗？

PC端通过USB线，连接进入HUB芯片(FE1.1S)，再通过分出来连接到MCU的DM\DP引脚，但插入USB后，电脑端无法识别成串口，在PC端只出现集线器设备，但我通过飞线跳过HUB芯片直接连接MCU的DM\DP引脚，又能正常识别到串口；按道理，如果HUB芯片不工作，那应该在PC端也不会识别出集线器设备的把？目前哪还有问题，请大神指点？？？？

[color=#444444][backcolor=rgb(255, 255, 255)][font=Tahoma, "][size=15px]我找一个芯片，和我的单片机用SPI连，对外提供USB接口；再这个USB口上可以插U盘都威胁文件，也可以接到电脑成为电脑的一个串口[/size][/font][/backcolor][/color]

我找一个芯片，和我的单片机用SPI连，对外提供USB接口；再这个USB口上可以插U盘都威胁文件，也可以接到电脑成为电脑的一个串口

[i=s] 本帖最后由 chest20090909 于 2020-12-17 14:15 编辑 [/i] 手上有个ST LINK烧录器，[attach]1596480[/attach] 之前连电脑使用正常，今天插上电脑USB口后，指示灯一直闪，在设备管理器里看到ST LINK是有惊叹号 [attach]1596468[/attach] 尝试过卸载驱动和更新驱动程序，也是一样有惊叹号。只是设备名称有些不同。 [attach]1596464[/attach] 试过把USB线拔出再插入检测，仍然有惊叹号，多次拔出插入过程中，可能会有一两次检测到设备，没有惊叹号。 [attach]1596470[/attach] 大部分时间拔出插入会显示惊叹号，有时还会显示未知设备。 [attach]1596474[/attach] 电脑系统是WIN10 [attach]1596476[/attach] PS: 我把ST LINK 拿去别的电脑上插，指示灯是常亮，可以检测到设备的。 请问这是什么原因呢，要从哪方面着手解决。

情况是，我把gdlink插进电脑，电脑自动安装的驱动不对，各位有没有完整的驱动程序？

如何解决电脑无法识别USB的问题

[i=s] 本帖最后由 nhb2318 于 2020-11-27 00:02 编辑 [/i] 大家好，我买了一个USB接口电容触摸屏驱动板控制卡，芯片是GD32F103的，是这个样子的[attach]1581454[/attach] 这个控制卡的一端接USB，一端接6P的触摸屏，接好以后，把USB插到电脑上，触摸屏就可以控制电脑了。不过买的时候卖家已经把触摸屏的分辨率写到芯片里了，现在我换了一个触摸屏，接上电脑发现触摸时候方向不对，手指向右滑，电脑光标是向下，手指向下滑，电脑光标是向右，彻底乱了，我问卖家是怎么设置的，他也不告诉我。请问各位高手帮帮忙，看看通过什么软件能读取其中的配置，然后进行设置，谢谢了！

我采用GD32F450做虚拟U盘实验，无论时用官方程序移植还是自己写工程，在电脑设备管理器中可识别到大容量存储设备，但是电脑（磁盘管理中）上不显示U盘设备。

VL813 VL817 设计时直接连接电脑时3.0设备掉线，中间串连了一个外购的VL817 HUB再连接设计的板子后设备工作正常，请问这种现象是什么原因造成的？

一天蓝屏几次。。。。。 如果在蓝屏的时候编写文件。那么你的文件就成白板咯。 今天已经有2次白板咯。。。。{:huffy:} [attach]1533492[/attach]