adc counters

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

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

One, the counters in Hadoop counter: A counter is used to record the execution progress and status of the job. Its role can be understood as a log . We can usually insert a counter somewhere in the program to record the change in data or progress, which is more convenient to analyze than the log. For example, we have a file that contains the following:Hello Youhello MeIt is executed by the WordCount program and displays the following log

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

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

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

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

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

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

MySql counters, such as the number of clicks on a website, how to implement high-performance and high-concurrency counters MySql counters, such as the number of clicks on a website, and how to implement high-performance and high-concurrency counters Clicks: 5338 Date: 2014-03-29 23:30:42 Power By Li Xuan Lane High-per

Embedded systems occupy an important position in the field of micro-control (temperature, humidity, pressure detection, four-axis aircraft), which are implemented by microprocessor CPUs (such as STM32) and sensors and controllers, and connect them so that they can communicate with each other properly. is the module to be sued in this section, ADC Analog-to-digital conversion peripherals. Let's start with the simplest experiment and learn more about th

ADC conversion is the input analog signal volume, the microcontroller converted to digital volume. Reading the number must wait for the conversion to complete, the completion of a channel reading is called the sampling period. Sampling period generally = conversion time + read time. The conversion time = sampling time + 12.5 clock cycles. The sampling time is the time you tell the STM32 sampling analog through the register, the longer the setting the

STM32 ADC synchronization rule mode (two-channel) It feels better to directly paste the code ...... 　　 1 # include "adc. h "2 3 float AD1_Value [N]; 4 float AD2_Value [N]; 5 volatile u32 ADCConvertedValue [N]; // AD × ue» ° ³ Ç çø, Õ Ó RAM 0.8KB 6 7 8 void Adc_Init (void) 9 {10 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; 11 ADC_InitTypeDef ADC_InitStructure; 12 GPIO_InitTypeDef GPIO_InitStructure; 13 DMA

/* ADC. H */# Define adc1_dr_address (u32) 0x4001244c)Void adc_configuration (void ); /* ADC. C */# Include "ADC. H"V16adc_convertedvalue; // This variable is used to store the ADC Conversion Result read by DMA. In the main function, extern v16adc_convertedvalue can use the converted result. /*

PHP implements website traffic counters and php traffic counters Simple website traffic counters are implemented as follows: DescriptionIdeas: 1. the user sends an access request to the server2. The server reads the access count file, + 1, and returns it to the client3. The server saves new browsing times4. Access new users by repeating 123. Solution(Main algorit

Implement High-performance and high-concurrency counters in MySQL (such as the number of clicks in articles) and mysql counters There are a lot of projects that implement counters at will. For example, when we implement the number of clicks on a website article, we design data tables like: "article_id, article_name, article_content, article_author, article_view .

1. BackgroundThis experiment is based on stm32f429 core board and has profound meaning for understanding stm32cube use. Using DMA for ADC sampling, with the advantage of fast, greatly reduce CPU consumption, for data acquisition system has a great advantage, especially its single 2.4MSPS sampling speed, three-way combination can achieve amazing 7.2MSPS sampling speed, for general applications can be satisfied. 2.stm32cube Configuration 2.1 The project