:org.freedesktop.PolicyKit1.Error.Failed:操作org.freedesktop.bolt.enroll未注册 ** (gnome-shell:558): 警告 **: 05
2023-05-16 06:52
当代码执行停止时,有没有办法阻止计时器?当我通过代码时,我被卡在毫秒计时器中断中,一遍又一遍地通过它。当我对设备进行编程并让它运行时,所有的设备都正常运行。它也在调试器中正常运行,直到我尝试通过代码。 以上来自于百度翻译 以下为原文Is there a way to stop the timers when code execution stops? when I step throuh the code I get stuck in my Millisecond timer interrupt and just steps through it over and over. When I program the device and let it run it all acts normally. It also acts normally in the debugger until I try to step through the code.
2019-07-22 13:36
HyperWorks在汽车与行人腿部碰撞仿真中的应用是什么?
2021-05-11 06:10
本文介绍了MN34041 NanoVesta摄像头主要特性和详细电路图。
2021-06-02 06:42
您好,我完全是新手使用PIC单片机,但我最近询问APIC18F25K50。我已经使用MPLAB X IDE V5.00、MCC V3.55.1和XC8编译器启动了一个项目。我已经编程的PIC,以稳定SPI与另一个IC通信,一切都按照预期的工作。现在我想通过USB通信与PC的EPIC18F25K50。要做到这一点,我使用MLA USB设备Lite在MPLAB中,它产生不同的源文件和头文件。我现在还不清楚的是如何从现在开始。我要做的第一件事是调用主代码中的函数“UbDeVice In()”,但是我得到编译错误。从这个意义上说,我将USB头文件包含到项目中,但是我再次得到编译错误。我不知道如何继续这一点。考虑到我想做的第一件事是初始化USB当连接到PC时被识别,有人能给我一些第一步来做这件事吗?先谢谢你,以上来自于百度翻译 以下为原文 Hello, I am totally newbie using PIC microcontrollers, but I have recently adquired a PIC18F25K50. I have started a project using MPLAB X IDE v5.00, MCC v3.55.1 and XC8 compiler. I have programmed the PIC to stablish SPI communication with another IC and everything works as expected. Now I would like to communicate PIC18F25K50 with a PC through USB. To do this I use the MLA USB Device Lite in MPLAB, which generates different source and header files. What is not clear to me is how to proceed from now on. The first thing I am trying to do is calling to the function "USBDeviceInit()" in the main code, but I get compilation errors. In this sense I include the u*** header files to the project but again I get compilation errors. I do not know how to continue at this point. Considering that the first thing I would like to do is to initialize the USB to be recognized when connecting it to the PC, somebody can give me some first steps to do that? Thank you in advance,
2018-08-30 16:02
worked with free template library files, I was able to bolt in the correct logic based on the PCAP
2019-04-10 14:54
你好,我想用PIC3MX220F03B和PICIT 3使用PIC的ADC获得ECG信号,并通过USB发送数据,尽可能简单。首先,我使用MCC,但我不能写任何代码到USB(我读了很多关于USB的事情,使用PIC32 MX,但没有帮助我)。所以,我安装了和谐思维,这是很容易做我想做的事。但现在我已经停止了,因为我不知道我如何配置配置器使用皮卡3。我没有ACCESS任何启动套件,既没有USB协议的经验。PS:对不起坏英语(巴西家伙),我认为这是正确的位置,Matheus Alexandre。 以上来自于百度翻译 以下为原文 Hi, I'd like to use PIC3MX220F032B and PicKit 3 to get an ECG signal using the pic's ADC and send the data, something as simple as possible, by USB. First, I used MCC, but I couldn't write any code to USB (I read many things about USB using PIC32mx, but nothing helped me). So, I installed harmony thinking that it would be easy to do what I want. But now I have already stopped because I don't have any idea how I configure the configurator to use PicKit 3.I don't have acess to any start kit, neither USB protocol experience. Ps: Sorry for bad english (Brazilian guy) and I thought that this is the right place to post., Matheus Alexandre
2019-03-14 12:50
本人前几天开始做调动车跷跷板这个题目,各个模块都准备好了,组装起来后发现倾角传感器在小车行进过程中不稳定,尤其是在小车停止和启动的时候,导致在平衡点附近来来回回冲来冲去超级不稳定,先前以为是电机的问题,后来我换驱动改用步进电机,可是现在还是不稳定,读书不稳定也导致我至今还没与做出这个题,有人做过这个题目吗?小弟求指教啊。顺便说一下,我角度传感器用的是SCA60C,驱动用的是L297+L298未加光耦,控制核心用的是C8051f020,AD用的就是单片机本身自带的。求指导啊!!!!!!
2013-08-09 10:32
引言 在通信系统中,当两个或两个以上的射频信号通过非线性特性的器件传输时,合成信号中会产生互调产物(Intermodulation Product,IMP)。当这些互调产物落人邻近工作的接收机通带内时,就会形成寄生干扰。 在舰载通信链路中,由发射机和接收机产生的有源互调干扰,可通过适当的系统隔离控制其最小化,而无源非线性引起的PIM通常不能采用同样的方法加以抑制。理论上讲,无源线性系统不产生新的频率分量。但是,实际上非线性变化在无源传输系统中是不可避免的,只是当载波信号较小时,非线性产生的无源互调产物(Passive Intermodulation Product,PIMP)所引起的无源互调干扰(Passive Intermodulation Interference,PIMI)不大,而不为人们所注意而已。但当载波信号较大时,这种互调干扰就较明显了。PIMP通常在多载波通信环境中产生,典型的如共用宽带天馈系统的船载通信系统、地面移动通信基站及卫星地面接收站等,特别是要求大功率发射系统和高灵敏度接收系统同时存在于有限空间的舰船通信系统,其客观存在的PIMI已不容忽视。
2019-06-17 06:01