數(shù)字示波器功能強(qiáng)大,使用方便,但是價格相對昂貴。本文以Ti的MSP430F5529為主控器,以Altera公司的EP2C5T144C8 FPGA器件為邏輯控制部件設(shè)計數(shù)字示波器。模擬信號經(jīng)程控放大、整形電路后形成方波信號送至FPGA測頻,根據(jù)頻率值選擇采用片上及片外高速AD分段采樣。FPGA控制片外AD采樣并將數(shù)據(jù)輸入到FIFO模塊中緩存,由單片機(jī)進(jìn)行頻譜分析。測試表明:簡易示波器可以實現(xiàn)自動選檔、多采樣率采樣、高精度測頻及頻譜分析等功能。Digital oscilloscope is powerful and easy to use, but also expensive. The research group designed a low-cost digital oscilloscope, the chip of MSP430F5529 of TI is chosen as the main controller and the device of EP2C5T144C8 of Altera company is used as the logic control unit. Analog signal enter the programmable amplifier circuit, shaping circuit and other pre-processing circuit. The shaped rectangular wave signal is sent to FPGA for measure the frequency. According to the frequency value to select AD on-chip or off-chip high-speed AD for sampling. FPGA controls the off-chip AD sampling and buffers AD data by FIFO module. The single chip microcomputer receives the data, and do FFT for spectrum analysis. The test shows that the simple oscilloscope can realize automatic gain selection, sampling at different sampling rates, high precision frequency measurement and spectrum analysis.
The GL823K integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer performance between USB and flash card interfaces. Its pin assignment design fits to card sockets to provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL is needed and that effectively reduces the total BOM cost.
1. General Description BL-M3362NS1 product is designed base on Broadcom BCM43362 chipset. It operates at 2.4GHz band and supports IEEE802.11b/g/n 1T1Rwith wireless data rate up to 72.2Mbps. It supports IEEE802.11isafety protocol, along with IEEE802.11e standard service quality. It supports standard interfaces SDIOV2.0(50 MHz,4-bit and1-bit) and generic SPI(up to 50 MHz), Integrated ARM Cortex?-M3 CPUwith on-chip memory enables running IEEE802.11 firmware that can be field-upgraded with future features.2. The range of applying Imaging platforms(printers, digital still cameras, digital picture frames)Consumer electronic devices(DTV, DVDplayers, Blu-ray players. etc.)Gaming platforms Carinformation MiFi/Mobile Routes Smart PAD Set-TopBoxes
The GD32F103xx device is a 32-bit general-purpose microcontroller based on the ARM?Cortex?-M3 RISC core with best ratio in terms of processing power, reduced power consumption and peripheral set. The Cortex?-M3 is a next generation processor core whichis tightly coupled with a Nested Vectored Interrupt Controller (NVIC), SysTick timer and advanced debug support.The GD32F103xx device incorporates the ARM ' Cortex?-M3 32-bit processor core operating at 108 MHz frequency with Flash accesses zero wait states to obtain maximumefficiency. It provides up to 3 MB on-chip Flash memory and up to 96 KB SRAM memory. An extensive range of enhanced I/Os and peripherals connected to two APB buses. The devices offer up to three 12-bit ADCs, up to two 12-bit DACs, up to ten general-purpose
VIP專區(qū)-嵌入式/單片機(jī)編程源碼精選合集系列（123）資源包含以下內(nèi)容：1. 研華數(shù)據(jù)采集卡c++ console程序多通道采集數(shù)據(jù)的例子.2. 基于AT89C51的電子秤方案,原理圖,程序.3. FAT32 study report,it s discrips the FAT332 stard , FAT32 學(xué)習(xí)筆記.4. 基于arm的嵌入式書籍.5. 三菱FX系列PLC密碼解密軟件.不需注冊..6. This guide reviews the rules and syntax of the principle commands that comprise C and its object-ori.7. 紅外遙控大全.8. ADI公司DDS芯片AD9830應(yīng)用資料.9. ADI公司DDS芯片AD9832應(yīng)用資料.10. ADI公司DDS芯片AD9833應(yīng)用資料.11. ADI公司DDS芯片AD9834應(yīng)用資料.12. PXA27x Processor Family Optimization Guide.13. ti的c2000的spi。有用的著的時候。可以在程序中測試spi口.14. *名稱：LCD12864顯示程序 功能：顯示英文.15. 89c51與ds1302代碼顯示時間的源程序.16. 51實驗板的原理圖！可以作為簡單的起步參考.17. 由于找不到安裝 紅旗需要的文件.18. W3100是WIZnet公司專門為以太網(wǎng)互聯(lián)和嵌入式設(shè)備推出的硬件TCP／IP協(xié)議棧芯片.19. 基于狀態(tài)轉(zhuǎn)換法設(shè)計的電機(jī)正反轉(zhuǎn)、調(diào)速PLC源程序.20. s3c4510b的源代碼以及并口JTAG下載調(diào)試程序.21. 介紹了實時嵌入式系統(tǒng)的相關(guān)內(nèi)容,對于研究嵌入式很用用..22. 射頻讀寫模塊是采用最新Mifare技術(shù)的微型嵌入式非接觸式IC卡讀寫模塊。內(nèi)嵌ISO14443 Type A協(xié)議解釋器,并具有射頻驅(qū)動及接收功能,可以簡單實現(xiàn)對MifareOne等卡片的讀寫操作,讀寫.23. AT91SAM7S64開發(fā)板的ADS范例for ATMEL S64-EKAT91SAM7S64-BasicMouseUSB.24. ds18b20的一個完整程序.25. 我的一個交通燈的課程設(shè)計.26. mcuzone的AT91RM9200EK底板原理圖Rev2.0.27. 有關(guān)I2C設(shè)計的資料. 有關(guān)I2C設(shè)計的資料..28. cmos的教程.29. This designs demonstrates how to use the Ethernet port using a Nios II system on the DE2 board. It s.30. 低頻數(shù)字式相位測量儀.31. 使用C C++ 開發(fā)嵌入系統(tǒng)
詳細(xì)實例 很實用.32. 270開發(fā)板串口擴(kuò)展測試程序,arm9 工控板測試.33. 利用PCB上的走線實現(xiàn)高頻低通濾波器的設(shè)計.34. LPC２１３１ 對大家和有幫助的.35. 這是一個AVR單片機(jī)的紅外遙控程序.36. 嵌入式實時操作系統(tǒng)psos的系統(tǒng)調(diào)用手冊.37. 題目1：DSB調(diào)制與解調(diào)電路的MATLAB實現(xiàn)及調(diào)制性能分析
題目2：SSB調(diào)制與解調(diào)電路的MATLAB實現(xiàn)及調(diào)制性能分析
題目3：AM調(diào)制與解調(diào)電路的MATLAB實現(xiàn)及調(diào)
題目5：PM調(diào)制與解.38. 該P(yáng)DF文檔是CPLD/FPGA的入門教程。里面敘述了PLD的基本結(jié)構(gòu).39. 51單片機(jī)+max7219驅(qū)動實例
8位LED同時循環(huán)顯示1-9.40. 嵌入式系統(tǒng)中U-Boot基本特點(diǎn)及其移植方法.
water temperature control system uses the Single Chip Microcomputer to carry on temperature real-time gathering and controling. DS18B20, digitized temperature sensor, provides the temperature signal by "a main line". In -10～+85℃ the scope, DS18B20’s inherent measuring accuracy is 0.5 ℃. The water temperature real-time control system uses the electricity nichrome wire carring on temperature increiseament and operates the electric fan to realize the temperature decrease control. The system has the higher measuring accuracy and the control precision, it also can complete the elevation of temperature and the temperature decrease control.
