cro oscilloscope

obtain the FPGA-specific VHDL RTLCode.5. Figure 5 signalcompiler 4. Use Modelsim for RTL-level simulation This step is to simulate and verify the VHDL File converted from the. MDL file, which can be achieved by adding the testbench component. 6. Figure 6 testbench In addition, if you select the launch GUI, you can directly start Modelsim for simulation. If you do not select it, you can use TCL --> execute macro under the Tools menu of Modelsim... search for the sinwave_add.tcl fi

The input resistor is a performance indicator used to measure the influence of the amplifier on the signal source. The larger the input resistor, the smaller the current obtained from the signal source, and the larger the signal voltage obtained from the amplifier input end, that is, the less the signal source voltage attenuation. Theoretical Basis: US = (RS + Ri) × I. RS indicates the internal resistance of the signal source, and RI indicates the input resistance of the amplifier. Therefore, th

schematic digoal On our board, MCP is used, which integrates emmc and lpddr2 together. During the development in U-boot, it's found that emmc in MCP cocould not work as expected. By analyzing the signal captured with oscilloscope, it seems the emmc cmds are sent from the AP correctly without doubts, but the MCP cocould not act accordingly. After reviewing the schematic digoal, well, one wire from AP is connected to the wrong pin in MCP. Point: Do not

think about it, but watch it. As you can imagine, there may be thousands of problems. The actual cause can be found only when you see it. Failed to observe. The Senior Engineer saw the real problem and was able to find the cause. Junior engineers think that they know where the error occurred, and the result is that they have not fixed the problem. View Details. Do not stop when the water pump appears to sound. Find out which pump is in the basement. Insert a plug-in tool. Use the

several ways to find the PPM signal interface after enabling the receiver:1. Check the chip information. For example, if the Futaba receiver uses the bu4015bf shift register chip, solder The Pin 1 or 9 to a wire. 2. Use an oscilloscope 3. use Arduino to write the program for measuring the pulse width, and find it on the circuit board until some random number estimates appear. Find and use the following code for decoding. This code segment uses the qu

of the chip Fae. Contact us for questions. Procurement: responsible for purchasing materials. If the corresponding materials are out of stock, the software may need to debug new devices. PM will handle these issues. Determine whether software debugging is required. 　　　　 RF: Responsible for RF Parameter Calibration and debugging. Production: the production process owner of the factory usually needs testing items during factory production. If there is a problem, the software owner needs to solv

area of the screen is limited. In addition, we have manually defined the coordinate system, and the actual displayed data may "overflow" the coordinate system. This requires us to reasonably narrow (or enlarge) the data collected by AD Based on the length and width of the coordinates. 4. Taking this design as an example, the coordinate pumping plan for the original waveform display area of the LCD screen is as follows: X axis has 128 units (pixels), Y axis has 64 units (pixels), for 10-bit ad,

operated with the mouse, which is very normal. It seems that s5pv210 is quite powerful. I have approached the limits mentioned in the manual for various parameters. Some of them have exceeded the limits, but they still work normally. The typical resolution mentioned in the manual is 1024*768. Later, Samsung's factory Fae said that the maximum resolution can be adjusted to 1280*1024. I also believe this is the limit of s5pv210, after all, this clock has reached more than 100 m, and it will certa

. This shows that the camera can be configured through I2C controller 1. In addition, when debugging the camera, you can use an oscilloscope to measure the waveform based on this schematic to verify that the code is correct. It is also worth noting that it is best to use a multimeter to measure whether each pin of the camera is correctly connected to the chip before the development driver. Otherwise, the image will not be visible even if the code is c

details, refer to the Modbus book) A timer is used to generate latency between 417us and 625us. 417us is used to determine the baud rate during sending, and 625us is used to wait for an start bit and add half the end bit during receiving. As for sending data, it is the same as the simulated serial port. For specific implementation, refer to the implementation of the simulated serial port. 3. For more information about checksum calculation, see my previous article. C # implement Modbus ascii-ba

follows:1. develop and test the hardware motherboard.2. BSP programming is selected for the operating system.3. Development of upper-layer applications.The BSP part is located between hardware, operating system, and upper-layer applications. Therefore, BSP programmers must have a certain understanding of hardware, software, and operating systems. In this way, BSP programming can be completed.Familiar with tools: electric meter, oscilloscope, and logi

computer with a graphical display-Cyclone I (Whirlwind i). The cyclone I display uses an oscilloscope-like cathode ray tube (cathode ray tube,crt) to display some simple graphics. 1958 the United States Calcomp Company developed a drum-type plotter, Gerber CNC machine tools to develop into a flat-panel plotter. In this period, the electronic computers are mainly used for scientific calculation, and the graphics equipment for these computers is only a

the following aspects:1. Done indicates whether the signal led is on or off and the configuration is complete;2. The measured voltage is normal, the core voltage (1.2V), the reference voltage (2.5v), the IO port voltage (3.3v), respectively;3. Check the configuration mode m[2:0] is correct, (m[2:0]=4. Use oscilloscope acquisition to configure the clock signal to see if it is normal, less than 12M (Spartan 3e + xcf04s)5. The data sheet of the PROM, pr

In the debugging process appears stm32 program download success but the program does not run, in the debug, after the execution of initialization, execution to the time delay function when the error, suspected external clock problem, the use of 8MHz crystal oscillator, crystal after the change of the program normal operation.Using an oscilloscope to measure crystal waveforms such as:After replacing crystal oscillator waveform such as:Stm32 chip Downlo

Notes: mini2440 platform, wince6.0 system, vs2005 After several months of study suspension, I finally added the GPIO-simulated IIC bus under wince to achieve IIC transplantation. The IIC chip is the SHT21 Temperature and Humidity chip. The reason why I haven't completed IIC for so long is that I implemented it very early in ADS, but it's always wrong to add it to the system! The timing sequence discovered by the oscilloscope is incorrect after the chi

risks. 3. Development Cost PREDICTION AND ESTIMATION Most projects or products have dedicated personnel responsible for predicting the development costs of the entire process. For any project, the development costs mainly include manpower and material costs. The cost of development prediction is largely based on experience, which is why large companies generally designate experienced senior engineers to complete this task, in addition to human and material overhead, to sum up, there are also th

hardware is ready. Let's take a look at how the official software provided by Apsara is implemented. This part of the software needs to be found in the sysinit. c file, one of the startup code files (here, I will complain about the trouble that the official version of feiskar has provided. At the end, we can see two subfunctions and calls in the program ,: After setting as shown in the software, the output can be normal. In software MCG initialization, the kernel clock I set is 100 MHz (So tr

Mail: bookworepeng@Hotmail.com Qq: 196568501 Author: DriveMonkey Undertake various embedded outsourcing projects (fpga, cpld, schematic diagram, pcb, copy board, linux, wince, single chip microcomputer, PC-phone: 13410905075) Note: the green channel is clk. The yellow channel is data Analysis: 1. the LCD parameter is the rising edge of the sent data along the clock descent edge to receive data. A preliminary analysis of the entire sequence chart is indeed like this. Where is the problem? See S

, you can easily achieve the de-jitter function of keys without the intervention of software. This is a de-jitter function implemented by hardware, this greatly saves software overhead and program code length. Each timer can input up to four buttons. This method can also be used for keyboard matrix scanning. In addition, the software does not need to scan frequently because it is implemented through interruption. This article also excerpted a netizen. It was very painful to learn the

, developing necessary drivers is an essential step. It is quite easy to develop a driver in Linux. First, the Linux driver architecture is relatively fixed, and second, there are a lot of source code for reference. The difficulty is often the debugging process, which also takes more time and requires frequent changes to some code. At the same time, the driver development process also often requires the help of the oscilloscope, logical analyzer and o