您好,我正在使用A.09.80.15固件,我正在尝试为我在Megahertz单元中配置的SMC通道设置标记。如果我尝试输入值(即200 MHz)并使用小写的“m”,则不会设置它。只有当我使用大写
2019-04-15 08:20
如题,求大神详解!
2016-12-08 11:30
for”IVOR1_Vector( ) 在 0x1001010" "。初始化代码如下:void initLINFlexD_1 (unsigned int MegaHertz
2023-03-16 06:58
Wi-Fi通知智能家居管理系统将非紧急设备都调为静音。下午3点,好朋友留言今天从上海顺路来东莞探望您,您通过Wi-Fi通知智能藏酒中心,将那瓶82年的红酒打开,并冷却到合适的温度。下午5点,您从公
2015-07-28 16:00
【 手动添加***\029期数码挂牌\【 手动添加 A X T V 8 9 0】 为您解答&&&首次合@@作我们将为您创造源源不断的财富。您源源不断的财富就是我们实力的见证!还等什么!028期:《已.解. A X T V 8 9 0 》准027期:《虎.牛》特33虎准026期:《鸡.鼠》特02鸡准025期:《鸡.羊》特02鸡准024期:《龙.鼠》特07龙准023期:《羊.兔》特20兔准022期:《虎.狗》特21虎准
2018-03-19 16:08
大家好,我正在尝试使用Spartan 3E入门套件(500K,fg320)进行PWM生成。我精通C语言,但对VHDL很新。我为每个CLK事件设置了一个计数器,然后拉下u / down所需的引脚来获得PWM。但我认为这是一种蹩脚的方法,因为我只是获得了另一个源生成的PWM并对其进行处理。我想要实现的是生成一个独立的PWM源,具有可调频率和占空比。如果“等待”语句可用于实现,那将是一个肮脏的解决方案,但事实并非如此。您认为我的方法应该是什么?您会建议使用哪本书/来源来更深入地了解这些内容?谢谢祝你今天愉快。以上来自于谷歌翻译以下为原文Hi all, I am trying to experiment with PWM generating using a Spartan 3E Starter Kit (500K,fg320). I am fluent in C but new to VHDL. I put a counter for each CLK event and pull-u/down necessary pin to get the PWM.But I think this is a lame way to do it because I am just getting the PWM generated by another source and processing it. What I want to achieve is to generate an independent PWM source, with adjustable frequency and duty cycle. If "wait for" statement was available to implement, that would be a dirty solution but it isn't. What do you think my approach should be ? Which book/source would you recommend to get more insight on these ? Thank youHave a nice day.
2019-06-24 14:16
您好,我正在开发一个高速输入输出的应用程序,外设要求如下:1。4 PWM输出与分辨率32位和2MHz时钟或外部时钟源的PWM与32位决议2。8个外部中断引脚。针对每个中断的专用中断请求。一个UART(用于编程)4。一个I2C(100kHz)5。时钟源:外部晶体支持,时钟应高于40MHz。6。引脚数:32到487。Flash:32 KB到128KBIS的任何微控制器都具备这些特性? 以上来自于百度翻译 以下为原文 Hello,I am developing one application with high speed inputs and outputs.Peripheral requirement for application are as below:1. 4 PWM output with resolution 32bit and 2MHZ clock OR external clock source for PWM with 32bit resolution2. 8 external interrupt pins. Dedicated interrupt request for each interrupt3. One UART(for programming)4. One I2C (100kHz)5. Clock source : external crystal support, clock should be higher than 40MHz.6. Pin count : 32 to 487. Flash : 32kB to 128kBIs any microcontroller available with these features?
2019-03-19 13:53
我刚刚开始使用PIC24EP256MC202选择标准的一个重要部分,因为它有一个16位能力的SPI接口来驱动外部DAC。如果您检查两个公认的行业标准(例如Wiki)或一个常见的SPI DAC(例如Microchip MCP421)的数据表。在整个SPI传输过程中,发现从属选择应该是活动的。然而,微芯片是不兼容的,因为主模式中的从属选择仅在一个时钟周期内激活。什么样的基础上,当这些芯片功能不正常时,将它们作为SPI接口销售?对于软件不需要等待循环的问题,你有什么样的工作?为什么这个问题在硅勘误表中没有处理?附加的范围镜头显示了16位数据帧0x200 F的从属选择,时钟速度为1.25MHZEDIT,工作……绝不使用框架模式(SPIXCON2,FRMEN),试图得到SS信号,因为这导致时钟连续运行!当FRME被清除时,时钟只在事务持续时间内输出。这允许从使用普通IO引脚的软件驱动从属选择线,在将数据写入SPI缓冲器之前将其设置为真,并将其返回到假的某个合适的时间,如果有的话。 以上来自于百度翻译 以下为原文 I have just started to use the PIC24EP256MC202 an important part of the selection criteria being this had a 16 bit capable SPI interface for driving external DAC's.If you check both the accepted industry standard (e.g. Wiki) or the data sheet for a common SPI DAC (e.g. MICROCHIP MCP4921) you will discover slave select should be active during the entire SPI transfer. It seems however Microchip are non-compliant as there slave select in master mode is only active for a single clock period! On what basis are you selling these chips as containing an SPI interface when it is dysfunctional ?What work-around do you have for this problem that does not require wait loops in software ?Why is this issue not dealt with in the silicon errata ? The attached scope shot shows slave select with a 16 bit data frame 0x200F, clock speed is 1.25Mhz EDIT, WORK AROUND......Never use framed mode (SPIxCON2, FRMEN) in an attempt to get an SS signal as this causes the clock to run continuously! When FRMEN is cleared the clock is only output for the duration of the transaction.This allows the slave select line to be driven by software using an ordinary io pin, setting it true prior to writing data to the spi buffer and returning it to false some suitable time later if at all. Attached Image(s)
2018-12-17 16:43
我使用的是DSPIC33 XC16。我试图理解Sosc是如何工作的。我有一个工作在8MHz的外部晶体。首先我需要理解的是这个频率有多少秒(或者我如何计算)。然后,我需要计算如何设计频率来创建示例1秒延迟。如果我使用PLL怎么办?我会用FoSC * 4频率来设计我的频率?PIC中的每一个命令每4赫兹执行一次吗? 以上来自于百度翻译 以下为原文 I'm using dspic33 xc16. I'm trying to understand how Sosc works. Example i have an external crystal which is working in 8mhz. First thing i need to understand is how many seconds(or how can i calculate) are this frequency. Then i need to calculate how can i devide my frequency for creating example 1 second delay.What if i will use PLL? i will devide my frequency with FOSC*4 frequency?Also every command in pic is executed every 4 hetz?
2018-09-30 15:52
现代科学对液体中的味道分成酸、苦、甜、咸、鲜等五种基本味道。电子舌(electronic tongue),就是应用於分辨液体中味道判定及成份分析的仪器。它是一种可以在短时间内分辨和定量溶液中不同的味觉(taste)或化学成份的仪器。
2019-11-05 09:10