10m transceiver

ObjectiveAbout the function of DMA (Direct Memory Access), the people who are concerned about me should know that I have briefly spoken on the F1 chip. There are netizens asked to explain in F0 the use of DMA transceiver serial data. Today should be a user request to summarize on the F0 chip, the use of DMA transmission (transceiver) Usart data functions.In a variety of chips (F0, F1, F2, F3, F4) know the f

In wireless communication, the nrf24l01 wireless transceiver module produced by Nordic is the choice of many players. It is GHz ~ The single-chip wireless transceiver chip in the GHz ISM band has the advantages of strong functions, convenient control, and low price. One piece of nrf24l01 can receive data sent from six channels at the same time, and change the communication channel to avoid wireless communic

1.UDP the difference between using the Connect function and not using the Connect function* No longer use sendto/recvfrom, but only write/read or SEND/RECV, which means that the destination IP cannot be specified when sending and receiving data* Asynchronous errors raised by connected UDP are returned to the process in which they are located, while non-connected UDP does not receive asynchronous errors* Connected UDP has high transceiver efficiency. B

Switch Transceiver Principle: Working at the data Link layer, the switch has a very high bandwidth of the back bus and the internal switching matrix. All ports on the switch are hooked up to this bus. When the packet is received, the processing port looks for the in-memory MAC address (that is , the physical address in the serial EEPROM that is cured on the NIC ) to that port, which is sent to the destination port through the internal exchange matrix.

grab the bag ...I turned on the main switch mirroring mode, grasping the main interface data, so as to ensure that all the user's data, so as to facilitate the analysis3, waited for about 3 hours, when I was ready to give up, suddenly the user again abnormal fall off the line ... At this time the clutch software is also jammed ....I know that at this time a large number of packet attacks caused the computer to be unable to respond ... So now I can only wait.4, probably waited for half an hour o

First, why use SerDes Traditional source synchronous transmission, clock and data separation. At low rate (When the rate gets higher, it's going to be a problem.Because the transmission line delay inconsistency and jitter exists, the receiver can not correctly sampled data, to the point of the forbidden Eye graph.Then I thought about recovering the clock from the data to sample the data, the CDRThus there is no delay inconsistency, and a slight jitter does not affect the sampling (the recovered

http://xilinx.eetrend.com/article/7471With the advent of the NI pxie-5644r vector signal transceiver (VST), ni reshaped the concept of the instrument by introducing the flexibility of the user-programmable FPGA into the RF instrument.1. High performance and revolutionary designNI pxie-5644r VST combines typical RF I/O functions in a vector signal analyzer (VSA) and vector signal Generator (VSG) with NI or user-defined functions for signal processing a

Sometimes you have a can equipped processor in a low cost board but it has no CAN transceiver chips.Here is a method, the can be used to create a small experimental network with such a board.There'll is no noise immunity and you might has to lower the speed ....But many experimenters has made this work satisfactorily.Use a signal diode similar to 1n914 or 1N4148.Power supply diodes usually do not has a fast enough recovery time for CAN to function.Mod

Objective: To complete the network Port transceiver debugging process: NBSP;NBSP;1, network port initialization, according to the chip data sheet configuration 2, the number of network port, first to the TX FIFO in DM9000 to the data, and then sent to send the register to complete the sending; 3, network port reception. 1) Interrupt mode: DM9000 interrupts can be queried by proactively querying the DM9000 interrupt register, and by interrupting th

Winsock Transceiver Broadcast PacketThe concept of a broadcast packageBroadcast packets are typically used for two reasons: 11 applications want to find a resource on the local network, and the application has no prior knowledge of the address of the resource.2 Some important features, such as routing requirements, send their information to all the neighboring machines found.The destination address of the broadcast information depends on the network o

The NETWORKCOMMS communication Framework is a communication framework written by the British C # language that lasted 6 years and was developed to be stable and reliable in performance.The core function of Networkcomms V3 is to some extent asynchronous in its own way.NETWORKCOMMS provides the functionality to synchronize the request data and get the corresponding corresponding, very simple.Try{ //Connection information classConnectionInfo ConnectionInfo =NewConnectionInfo ("127.0.0.1",10000);

dma_clearitpendingbit (DMA1_IT_TC4); } }A few notes1) The use of a double buffer in this way, for the large amount of time is very effective, when processing a buffer data, another buffer can normally receive data2) TX DMA interrupt, can be similar to the operation of the operating system mutex, when an array is still sent, another array if the detection of a send, it is not able to send, otherwise the child data will be confused;3) If the DMA receives the way to adopt the circular

detail.PHP's mail function, send mail. The university course has been established. But only the SMTP protocol was sent by mail. The use of Phpmailer. But did not give POP3 to receive mail. This part will be realized today. Add a little bit more PHP mail to send to receive. Fully understand the use of SMTP and POP3 protocols in practice.A little day, live broadcast. Rookie of the Road of growth!。。 Three months to witness how the rookie become a great God.2014/09/25 0:33 BeijingThree months-see t

Previously published two essays: "Socket Development Quest--the definition of basic class and public class" and "Socket Development quest-Data packet and unpacking", introduced the development of socket. This article continues to explore the technical aspects of using the JSON format as a socket transceiver protocol. Before, the received socket data after a rough parsing, is the predata type of data, this is a general data format, we need to further

Test code: Http://www.cnblogs.com/Files/dyj057/Gms%20Modem SMS transceiver components. rar There are many types of SMS deployment scenarios, and we now introduce 3 major deployment scenarios. Customers can choose one of these schemes to implement and complete the application of SMS. Deployment of GMS Modem Purchase hardware devicesThe GMS Modem (Short message module) is a hardware device which communicates with the computer through a serial port to re