spi clock

SPI Bus StructureThe SPI (Serial peripheral Interface) Serial Peripheral Interface is a high-speed, full-duplex, synchronous communication bus. The Master Slave architecture is used to support multiple Slave, generally supporting only single master. There are 4 signal lines in the SPI interface, namely: Device Selection Line (SS),

SPI (Serial peripheral Interface: Serial Peripheral Interface ); SpiThe bus consists of three signal lines: serial clock(SCLK), serial data output(SDO), serial data input(SDI). SPIThe bus can implement multipleSPIdevices are connected to each other. ProvideSPIof the serial clockSPIdevice isSPIhost or main device(Master), other devices areSPIslave or slave device(Slave). The master-slave device can achieve f

1.Q: What is the system clock. What is a clock system. A: Usually referred to as the system clock refers to the clock system, which is the oscillator (signal source), timing wake-up, frequency divider and other components of the circuit. The commonly used signal sources are crystal oscillators and RC oscillators. 2.Q

What is SPI The SPI is the service Provider Interface, which provides the interface. SPI thought Abstract in our system of the various modules, often have a lot of different implementations, such as the program of the log module, XML parsing module, the JDBC module scheme. In the object-oriented design, we generally recommend that the modules are base

| = 0x40000; // key. You must first set pclk to SPI clock; otherwise, the SPI-related registers cannot be set !!!Rsppre0 = 0x01; // you can specify the SPI baud rate.Rspcon0 = 0x19; // set to query modeRsppin0 = 0x02;For (I = 0; I {Rsptdat0 = 0xff;} // Initialize the deviceReturn 0;}Static int spi_release (struct inod

1. IntroductionThe SPI full name is the service Provider Interface, the provider interface, the service usually refers to an interface or an abstract class, the service provider is a concrete implementation of this interface or abstract class, by the third party to implement the interface to provide specific services. SPI provides a dynamic mechanism for extending applications, often as an extension of the

Module Spi_slave (CLK,//system clock 50MHzSCK, Ssel, MOSI,MISO//SPI communication pin );Input SCK, Ssel, MOSI;Output miso;Sync SCK to the FPGA clock using a 3-bits shift registerreg [2:0] Sckr;Always @ (Posedge clk) Sckr Wire Sck_risingedge = (sckr[2:1]==2 ' B01); Now we can detect SCK rising edgesWire Sck_fallingedge = (sckr[2:1]==2 ' B10); and falling edges //S

I use the ADC081SD chip, Cpol:cs is pulled to low power sclk is high, Cpol for 1,cs was pulled to low power sclk for 0 o'clock, Cpol for 0;The Cpha:cs is pulled to the low level after the first clock edge is 0, and the second clock along the acquisition data is 1.When the corresponding acquisition data bits of the clock rise are stable, the rising edge is collect

Overview:The SPI (Serial peripheral Interface, Serial Peripheral Interface) is a four-wire serial synchronous bus that Motorola introduces. Full Duplex Master-Slave mode Synchronous communication Four line:sdi-receive data, Master sends to slavesdo-send data, slave sent to mastersck-clock, synchronous clock generated by masterss-chip selection signa

http://blog.csdn.net/quhongwei_zhanqiu/article/details/41577235 SPI Interface Definition @spi annotations are defined Public @interface SPI { stringvalue () default ""; Specify the default extension point Only interface classes that have @spi annotations on the interface will find the extension point impl

(){ //deal with banan } } public class PeelOffFactory{ private Map For this method, the next time we want to add a new kind of fruit skinning, we just need to create a new fruit peeling class, let it implement the Peefoff interface just fine. The business logic implemented using the policy pattern is more flexible and is often used as a substitute for conditional statement blocks in programming. And the SPI mechanism is in fact simi

The following are from: http://blog.csdn.net/mosquitolxw/article/details/25290315What is the difference between Service Provider Interface (SPI) and application Programming Interface (API)?More specifically, for Java libraries, what makes them an API and/or SPI?The API is the description of classes/interfaces/methods/... that's call and use to achieve a goalThe SPI