dsp programmatic

3. Subtraction operation of fixed-point number Simply put, the principle of the various operations is to be the operation of the data to enlarge a certain number of times, in the process of operation of the magnified data, in the final need to output the results of the adjustment back. For example, there are the following operations: Copy Code code as follows: ... COEFS1 = 0.023423; coefs2=0.2131 float COEFS1,COEFS2; int result; ... result = 34* coefs1+72* coe

DSP ad.com ads on the meijiu.com. Suppose DMP is called cm.api.taobao.com. Create a GID mapping table (1) ad.com is deployed on Meiju.com's page, pointing to DMP-----cm.api.taobao.com (2) Then the user opens the Meijiu.com page of the browser and requests the-cm.api.taobao.com (3) cm.api.taobao.com will 302 redirect to ad.com and attach the relevant GID information to the DSP for use. and returns a baco

1. Introduction Robot visual servo system is an important research direction in the robot field. It originated in the early 1980s s and has made great progress with the development of computer technology, image processing technology, and control theory, some systems are in use. Visual servo is different from what we usually call machine vision. visual servo uses the principle of machine vision to automatically obtain and analyze images. From the directly obtained image processing feedback inform

The tms320c6678 is a 8-core DSP processor for the Keystone Architecture , with a frequency of up to 1.25 GHzper Corepac core, providing powerful fixed-point and floating-point arithmetic capabilities, At the same time the chip internal integration of multicore Navigator, RapidIO, Gigabit Ethernet and EDMA peripherals, due to the chip processing power, peripheral features rich, and on-chip integration of a large number of hardware accelerators, such as

Test process 1 of FFT operation using FPU + DSP library of iisf4, stm32f4fpu Test environment: Microcontroller: STM32F407ZGT6 IDE: keil5.255.0.0 Firmware Library version: STM32F4xx_DSP_StdPeriph_Lib_V1.4.0 Part 1: UseSource code fileUse the void arm_cfft_radix4_f32 (const arm_cfft_radix4_instance_f32 * S, float32_t * pSrc) function to perform the FFT operation. Prepare an empty project, configure the Keil environment, and enable FPU units that can pre

Http://hi.baidu.com/hmilo029/blog/item/9687fbf81bac650bd8f9fdc3.html Differences in uClinux content downloaded from the uClinux official site http://www.uclinux.org and the ADI Blackfin website http://blackfin.uclinux.org, the market is dominated by arm processors, and DSP processors have gradually become a new favorite because of the emergence of a variety of new series. Here we use Adi (analogdevices. INC) the company's Blackfin

I am troubled by the optimization of the Ti 6000 series DSP. I would like to sum up my optimization experience and hope to help you. I. First, we should consider optimizing the system structure. For example, we should try to reduce unnecessary migration of data to be processed, and consider optimizing the system structure of your DSP disk memory and the amount of data processed each time, this part of optim

Modeling and configuration of DSP System [Date: 2008-6-2] Source: electronic design application by Eyal Bergman [Font: large, medium, and small] 　 Embedded software development requires a thorough understanding of the target architecture and its application. It takes a series of steps to transform the concept of an embedded system into an efficient solution that can be effectively deployed in a hardware environment. The entire pro

works normally when Flash is burned. For details, see section 5th of general method for Flash writing on TMS320C6713.Check for hidden memory errors in the program. In many cases, programs in RAM can run normally when the array is out of bounds, but running after Flash writing will crash or the program will run. For example, defining an array, int x[5]; You can use statements like x [5] = 10 to run correctly in a RAM program, or on a PC. However, after writing the program to Flash, the

Original article: http://blog.163.com/liuhonggaono1@126/blog/static/10497901201183004839992/ These days we are preparing to look for a job. We need to sort out some theoretical or superficial knowledge, so we have time to sort out this rough comparison, let's take a look at the features of these two mainstream processors from the other side! DSP: DSP ( digital singnal processor ) is a unique micr

first, to consider the optimization from the system structure, such as minimizing the unnecessary removal of data to be processed, considering your DSP chip memory reserves and each processing data volume of the system structure optimization, this part of the optimization should be done first; Second , from the algorithm level, to see whether the algorithm has a better and simpler calculation method, the algorithm has some symmetry, can be used more

There are many descriptions about YUV4: 2: 2 to YUV4: 2: 0 on the network, but most of them are about the principle and there is no practical practice, this article provides the code tested on ti davinci DM6446 for your reference and learning. At the same time, I hope you can give us some advice. This method is applicable to DSP series such as TI, DM643x, and DM644x. The previous image collection formats are generally YCbCr (YUV4: 2: 2). However, many

expands: #pragma data_section (G). G ") If this does not work, modify the build option, into the advance, the memory mode into the" far ", the RTS calls to" are far "on the line. 13. Need to be very careful: CCS has an automatic optimization function, that is, choose-o1~-o3 in Build option, there will be different degrees of optimization results. But after optimization, CCS will turn the loop of the program into a DSP-like pipelined form, so it's un

DSP programming languages are assembly and C Let's start with the compilation basics, which are several common operations MOVE Transfer, ADD addition, sub subtraction, Mpym multiplication, MACM multiply (MACM a,b,c = "C=a*b+c") Shift: Shift-out bit discard, vacancy 0, left n is equal to n times 2, right shift n is equal to 2 of the n-th square For the program, mainly consists of data and code, the data is divided into initialized data and uninitializ

The management module provided in Dsp/bios for coordination between threads 1 MBX Mailbox Management module The MBX module uses a set of functions to manage access to a mailbox through a handle to a mailbox object. Usually mbx_pend function to wait for the message of the mailbox. This function can take a timeout parameter to control when the task is allowed to wait. If the parameter is set to Sys_forever, it causes the calling task to wait indefinitel

the compiler assembles the code, a control computer operation, a control assembler how to assemble the code Both the assembly and the C have pseudo instructions. Primarily defining code snippets and data segments Assembly definition code snippet and data segment pseudo instruction can look here HJR tutorial-DSP (ii): assembly operation and understanding of paragraph C language Code snippet #pragma code_section (symbol, "section_name"); Tell th

We know that after the DSP starts, the system will enter the reset interrupt, at this time the Reset interrupt service function is c_init00, this function is used to establish the C environment, to enter the main () function for system initialization, the main work is to build the stack, initialize the global variables and so on. Initialization of global variables: If the program is linked with the-C option, the compiled linked executable will place

Basic class DSP/bios api call I. Clock management CLK(1) uns ncounts = clk_countspms (void)Returns the counter value of the timer high-resolution clock per millisecond.(2) lguns currtime = clk_gethtime (void)The Return Value of the high-resolution clock exceeds 32 bits and returns to zero.High-resolution clock is the DSP clock divided by (tddr + 1)(3) lguns currtime = clk_getltime (void)The Return Value of

For more information about datasheet translation, see datasheet 3.9.6. --------------------------------- 3.9.6 reset Sequence When the reset # signal is low, the clock generator enters the bypass mode. At this time, the input clock is set to clkin or x2/clkin Based on the gpio4 status. When the level of the reset # pin changes from low to high, the following events are performed in sequence. Gpio6 and gpio7 are sampled at the rising edge of the reset signal. The status of gpio6 and

What is IOMath for floating-point to fixed-point operations? dsp, iomathdsp [Post Source: blog.csdn.net/lanmanck] I did not find it suitable for searching on the Internet. I will share it with you. We all know that there are few CPUs in the embedded system with floating-point operation instructions, and TI's DSP is also cheap. So what should we do if we want to increase the floating point speed during op