atmel adc

Original address: http://www.ednchina.com/ART_8800523945_28_19999_TA_f443c125. Htm?click_from=8800032061,9950148743,2015-12-19,edncol,newsletterAnti-aliasing filters are designed with an oversampling architecture and a complementary digital decimation filter. The oversampling architecture places the quest frequency away from the signal bandwidth, while the digital decimation filter attenuates most harmful out-of-band signals. When combined, they enable more free antialiasing filter responses, wh

The touch screen is summed up as input subsystem, here is mainly for the resistive screen, the use of the process is as follows: When the touch pen is pressed, resulting in an interrupt. Start the ADC conversion x, y coordinates in the interrupt handler function handler. The ADC is terminated, an ADC interrupt is generated, a timer is escalated in the

help you a little.Recording process and hardwareFirst of all, why emphasize the recording function of mobile phone.It's simple, the phone is used for calling. The process of the call, the first to record the voice of the speaker, and then the listener can hear. Therefore, the recording function for the call, is fundamental and important.For the mobile phone recording process, simply speaking, need to go through three stages, two links. Three links are: "Sound-analog electrical signals-digital e

After 1 days, the ADC has not come out and found that the value of the processing is always fixed value. Go to 21IC for help stickers. [STM32F0] stm32f030 ADC1 sampling Questions to ask It was a long time since no one replied, but someone reminded me that I needed to wait for DMA data to complete. After comparing the code of others, /* ADC DMA request in circular mode */Adc_dmarequestmodeconfig (ADC1, adc_d

Learning Goals: I/O port configuration, master I/O peripheral function and position distribution , register "percfg", "P2sel" and "p2dir".Front CC2541 bluetooth learning--I/O introduced CC2541 has 21 I/O pins that can be used as general-purpose I/O pins, and can also be used as peripheral I/O pins for ADC, serial, timer and Debug Interfaces . When set to peripheral I/O, it is necessary to place the corresponding register bit Pxsel 1, each peripheral u

This article is based on a week CC2541 notes summarySuitable for overview and quick index of knowledge--All Links:Intermediate Tutorial-osal Operating system \osal operating system-a preliminary study of experimental osal"Insert" sourceinsight-Engineering Establishment methodIntermediate Tutorial-osal Operating System (Osal System solution basic routines)Intermediate Tutorial-osal Operating system (learn more about-oled normal keys and 5-directional buttons-interrupts!!!) This system drive laye

Parameter transfer of BootLoader and Linux kernel-general Linux technology-Linux programming and kernel information. For details, see the following. In an embedded system, BootLoader is used to initialize hardware, load the kernel, and pass parameters. Because the hardware environment of the embedded system is different, the BootLoader of the embedded system is also different. The most common one is U-Boot. It supports different architectures, such as ARM, powerPC, X86, MIPS, etc. This article d

In an embedded system, bootloader is used to initialize hardware, load the kernel, and pass parameters. Because the hardware environment of the embedded system is different, the bootloader of the embedded system is also different. The most common one is u-boot. It supports different architectures, such as arm, powerPC, x86, MIPS, etc. This article describes the basic function of passing parameters between Bootloader and kernel. The hardware platform is based on at91rm9200 processor system, and t

installed 5, 6 times I understand, you do not allocate more than 4 m memory to the 810 graphics card, Xfree86-4 Sever it can not start, unlucky! If you do not have gxtar, You need to decompress it with gzip, bzip2, and tar. Both are source code installations and you need to. In addition, you need to perform operations as root. I will not elaborate on the installation method. Refer to Guido Socher's "AVR SCM GCC programming". Note: 1, after installing the binutils-2.11.2 must add/usr/local/atml/

about ARM [1]1. Arm sells only intellectual property and does not sell (physical, material) products.More than 100 companies worldwide have purchased ARM licenses, including Samsung, Freescale, NXP Semiconductors, STMicroelectronics, Texas Instruments, Toshiba,analog Device, Atmel,microsemi ... See ARM's website for detailsNumber of classic ARM processor licensesARM11 Series 82ARM9 Series 271Number of Cortex Processor licensesCORTEX-A 86Cortex-r 22COR

Original URL: http://www.cnblogs.com/biglucky/p/4057488.htmlTaking at91rm9200 platform as an example, this paper analyzes how the properties of device tree are obtained when driving loading from the angle of source code implementation.One: System-level initializationDt_machine_start is primarily defined as the type of "struct Machine_desc", placed in section (". Arch.info.init"), which is the initialization data, which is discarded after Kernel up.#define Dt_machine_start (_name, _namestr) \stat

Http://www.netfoucs.com/article/laoniu_c/84282.html1.stm32 ad conversions, you can organize conversion tasks into two groups: Rule groups and injection groups. A series of transformations in any order on any number of channels constitutes a group conversion. For example, the conversion can be completed in the following order: Channel 3, Channel 8, Channel 2, Channel 2, Channel 0, Channel 2, Channel 2, channel 15. When you perform a rule Channel Group Scan transformation, you can enable the conve

serial interface can be used. A complete conversion requires 24 serial synchronization clocks (DCLK) to complete. The first 8 clocks are used to enter the control byte via the din pin. When the converter obtains enough information about the next conversion, it enters the sampling mode. After 3 multi-clock cycles, the control byte setting is complete and the converter enters the conversion state. The next 12 clock cycles will complete a true analog-to-digital conversion, and the 13th clock will

Install and use Skyeye 1. Introduction Skyeye is an open-source software project that implements a pure software simulated integrated development environment on Linux and Windows platforms to simulate common embedded systems. You can run Linux, uClinux, uC/OS-II and other embedded operating systems and various system software on Skyeye. Currently, the latest version of skyeyeis skyeye-1.2-rc6.tar.bz2, which can be obtained from www.skyeye.org. Skyeye currently supports multiple embedded processo

processing, in-depth analysis of Android handler multithreading mechanism, focusing on the Android NDK application layer and driver communication; Part II, First of all, the Android system transplant related principles, and then step by step to teach you how to carry out the Linux kernel porting, Android source code compilation, and Android to Cortex A8 Development Board, the third part, first teach you how to build a bare metal development environment, Then we will take you through the Samsung

There are three ultimate propositions in Philosophy: Who are you? From where? Where to go? For the dapm mechanism, we can ask: What is dapm and what is its function? How is dapm created? How is dapm triggered? The following is an analysis of these three problems. First, what is dapm? This is mentioned in the overview of dapm, that is, the dynamic management of audio power supply. I believe that power management is not unfamiliar to everyone. The purpose of the dapm design is to enable the necess

For example, when we use assembly commands such as ADC and SBB, We Have To unbind the content in the flag register (EFL) for the sake of attention. View the value of each flag in binary details. Then these commands that need to use the mark register are clear at a glance. -- I can't wait to write a test code to see the secret: # Include Int main (void){_ ASM{MoV Al, 0xffMoV DL, 0x01 Add Al, DLADC Al, DL} Return 0; } It should be explained in the form

mode register is a read/write register. The ADC control register is a read/write register used to select the active channel and encoding input range and bipolar/single polarity operations. The I/O control register is a read/write register used to configure two I/O Ports. The filter register is a read/write register used to update the data of the encoding converter. The ADC data register is a read-only regi

the end of the conversion of the regular channel, and the transformed data is transferred from the ADC_DR register to the user-specified destination address.Note: Only ADC1 and ADC3 have DMA capabilities. The data converted by ADC2 can be transmitted using the DMA function of the ADC1 via the dual ADC mode.5. Dual ADC Mode(1) Synchronous injection mode: This mode converts an injection channel group. Extern

# DefineADC1_Chanel00 # defineADC1_Chanel11 # defineADC1_Chanel22 # defineADC1_Chanel33 # region // = the number of open AD channels ============================#defineadc _ ENB_NUM1 # define ADC_CYC_Cycles5 ready // set the adconversion rate uint16_t AD_Value [ADC_ENB_NUM]; // the region where the DMA data is stored # define ADC1_DR_Address (uint32_t) 0x4001244C) // base address of the ADC1 data register //******************************* * ***** // Function Name: ADC1_Config // function: adc1 I