Change the ad conversion value and voltage value by adjusting the potentiometer
stm32f1 ADC Configuration steps
1. Enable Gpio clock and ADC clock2. Configure PIN mode for analog input3. Configure the ADC's divide factor4. Initialize the ADC parameters, Adc_inittypedef5. Enable ADC6. Perform ADC calibration7. Set the
Abstract: The successive approximation register type (SAR) ADC occupies most of the medium to high resolution ADC market. The sar adc has a maximum sampling rate of 5 MSPs and a resolution of 8 to 18 bits. The SAR architecture allows high-performance, low-power ADC to use small-size packages and is suitable for systems
1. In order to implement the binary search algorithm, the N-bit register is first set to the intermediate scale (that is, 100... 00, and MSB is set to 1 ). In this way, the DAC output (vdac) is set to vref/2, and vref is the reference voltage provided to the ADC. Then, compare and determine whether vin is smaller than or greater than vdac. If Vin is greater than vdac, the MSB of the comparator output logic is 1 or 1, and the N-bit register is 1. Conve
Enter in the URL address bar: Such a refresh, you can see in the Firebug, only a few requests will be sent out, and almost no picture of the request, this is because the request will first check whether the local cache of the requested picture, If there is a cache and there is no expiration (the expiration can be viewed through the header of the picture request), he will not issue the picture requests.F5:f5 refresh is slightly slower than enter, for w
like you find a box of milk that has expired, so ask others, can not drink, if others say yes, you drink it, if others say no, then you have to find another box of fresh milk.As for F5 Refresh, its HTTP request message header is as follows:Host 192.168.3.174:8080User-agent mozilla/5.0 (Windows NT 5.1; rv:5.0) gecko/20100101 firefox/5.0Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-language zh-cn,zh;q=0.5Accept-encoding g
, the system returns 304 not modified. After the browser receives the modification, it reads the content from the cache. If it is modified, the system returns 200.OK, and new content is returned. In this situation, you find a box of expired milk, and ask someone else if they can drink it. If someone else says yes, you will drink it. If someone else says no, then you haveFind a box of fresh milk.
For F5 refresh, the HTTP request message header is as
F5 session persistence, f5 session
In recent projects, F5 needs to be used for load balancing and relevant information should be recorded.
The following is a description of the relevant parameters in the F5 change application. Let's take a look at them. Let's pick several important parameters to learn.
Stm32--adcTenet: The learning of technology is limited and the spirit of sharing is limitless.First, ADC IndicatorsThere are 18 channels to measure 16 external and 2 internal signal sources. The A/D conversion of each channel can be performed in a single, continuous, scan or discontinuous mode; the results of the ADC can be left-aligned or right-aligned in a 16-bit data register, and the analog watchdog fea
Pressing CTRL + F5 in Internet Explorer is a convenient way to force the page to be reloaded. All components of the page (images, CSS, JavaScript, and so on) are forcibly reloaded. it is equivalent to using an empty cache IE to access a page.
F5 is a simple refresh of the current page, click Ctrl + R, or right-click to refresh, it is the same, they have"If-modified"String. If you view
High speed ADC Clock jitter solution
The clock jitter of the high-speed ADC affects the SNR of the high-speed ADC, while the signal-to-noise ratio determines the effective range of the analog front-end input. Therefore, it is necessary to determine the effective input range of the analog front end, then determine the SNR that should be satisfied, and then deduce
In application note, ADC already has many examples, but it lacks a multi-channel scheduled scanning routine. Theoretically, the ADC is configured as a multi-channel ADC conversion, which is used with DMA for data transmission and is automatically triggered using timer + PRs. This function should be completely OK. However, there is only a lack of routines and self
F5 (debugging) and server controls, f5 debugging server controls
I. debugging
Background:
When debugging today, I found that the website I entered is http: // ×××. com: 7813/webaspx/System/Login. aspx (because the code is in the company, I don't have it. After waiting for half a day, the page cannot be loaded ). I have encountered a problem similar to this kind of problem since I just entered a new company
milk. As for F5 Refresh, its HTTP request message header is as follows: host 192.168.3.174:8080 user-agent Mozilla /5.0 (Windows NT 5.1; rv:5.0) gecko/20100101 firefox/5.0 accept text/html,application/xhtml+xml, application/xml;q=0.9,*/*;q=0.8 accept-language zh-cn,zh;q=0.5 Accept-Encoding gzip, deflate accept-charset gb2312,utf-8;q=0.7,*;q=0.7 connection keep-alive if-modified-since Mon, 10:12:40 GMT cache-control Max-age=0 Another l
These two days to the external interrupt and the ADC looked down, the personal feeling that the external interruption is not difficult, it is not written down, after all, it is a waste of time to write. ADC is more complex, and if you want to make it possible to use the ADC completely freely, it has to go through many practices. Because I have learned the library
On the basis of the previous note, complete a simple ADC sampling experiment.The first step: preparation of knowledge1, first look at the Bb_black ADC pin position. Is the distribution of the analog input ports of the bb_black.There are three important messages to note on this chart:(1) Number of analog input ports: ARM chip A total of 8 ADC channels, the Bb_blac
Before learning a number of modes of electricity, A/D conversion of the knowledge, also Baidu a lot of information is difficult to understand. Forget, first self-righteous, and so on after the study of specialized courses and then again. (You must learn to go home in winter vacation.) Well, that's what it's all about. Reading so much information, the sense of A/D conversion is the voltage (or other analog: such as pressure, image, etc.) into the digital, d/A is the reverse, and the
like you find a box of milk that has expired, so ask others, can not drink, if others say yes, you drink it, if others say no, then you have to find another box of fresh milk.As for F5 Refresh, its HTTP request message header is as follows:Host 192.168.3.174:8080User-agent mozilla/5.0 (Windows NT 5.1; rv:5.0) gecko/20100101 firefox/5.0Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-language zh-cn,zh;q=0.5Accept-encoding g
Now the software, radio, digital Image acquisition requires a high-speed A/d sampling to ensure the effectiveness and accuracy, the general measurement and control system also hopes to have a breakthrough in precision, the tide of human digitalization to promote A/D converter constant change, and A/D converter is the pioneer of digital human realization. A/D converter has been developed for more than more than 30 years and has undergone several technological innovations, ranging from parallel, s
This article was originally written by Guan Haitao. The original author has all rights reserved. For more information, see the source.As an industrial chip, ADC sampling is a very important peripheral. Stm32 integrates three 12-bit, 18-channel internal ADC, with a maximum speed of 1 microsecond. Combined with DMA, it can free up the CPU for better processing.Other logic functions on the
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