spi clock

Recently saw some of the company's framework and some of the open source framework seen before some of the service discovery and access are using the Java SPI mechanism. So simply summarize the idea of the Java SPI mechanism. The full name of the SPI is the service Provider Interface. Ordinary developers may be unfamiliar because this is for vendors or plug-ins.

The full name of the SPI is the service Provider Interface. Ordinary developers may be unfamiliar because this is for vendors or plug-ins. A more detailed description is available in the Java.util.ServiceLoader documentation. The thought is actually the same as "Callback". The idea of "Callback" is that when we invoke the API, we can write a piece of logical code ourselves and pass it into the API, which is invoked within the API at the right time to

background: in the business customization needs to consider different interfaces of the service implementation, each ringtones requirements of the interface is generally inconsistent, require interface services can be plug-in way to provide;Scenario Analysis:1) using the OSGi framework for development, but considering that the OSGi framework is too heavy to introduce more things, abandon the program;2) using the Java class loader dynamic loading external jar mechanism, dynamically loading the cu

1, Http://www.gammon.com.au/spiThis article explains in great detail the SPI communication of Arduino.2,http://www.brianhensley.net/2012/07/getting-spi-working-on-raspberry-pi.htmlThis is the SPI communication that speaks Raspberry Pi.3,http://mitchtech.net/raspberry-pi-arduino-spi/This article describes the communicat

In the face of distributed development, many of the calls between the systems are using RPC direct call, but sometimes upstream systems need to call the downstream system many interfaces, resulting in a large amount of development work. Therefore, the upstream system uses SPI to play an SPI interface in the jar package, so that the downstream business implementation of this

Usually used in the serial port and SPI configuration listed here, so that a contingency, directly brought over to use. It also points out the frequent problems of STM32F1 series and STM32F2 series. The library function used is the standard library function, not the HAL Library. First, the configuration of the serial port:STM32F1 Series Serial Port: * * Function Name: usart1_config () * Description: Serial 1 configuration function * Input: no * output

SPI service model for cloud computing Although there is no uniform definition of cloud computing, we have a relatively unified understanding of cloud computing service models. We know that cloud computing improves resource utilization by sharing resource pools. In cloud computing, the cloud computing service model can be divided into three types based on the resource categories in the resource pool, namely, the so-called

Solve the problem of slow SPI read/write speed after msm8909 + android5.1.1 is changed from BLSP3 to BLSP1 Solve the problem of slow SPI read/write speed after msm8909 + android5.1.1 is changed from BLSP3 to BLSP1 It is found that the read and write speed of SPI is a lot slower, the content of the msm8909-cb03.dtsi file is as follows: spi_0:

Not much understanding of the FPGA global Clock, thus reprinted a document:Http://xilinx.eetop.cn/?action-viewnews-itemid-42At present, synchronous sequential circuits are generally recommended for large designs. The synchronous sequential circuit is based on the design of Clock trigger, which puts forward higher requirements for clock cycle, duty ratio, delay an

Editor's note: In contrast to the traditional packet-filtering firewall technology, this paper probes into the problem of using WinSock2 SPI for network content access control from the application Layer Gateway technology. This is a new aspect of network security, or it provides a new way for enthusiasts and developers of network security technology. Firewalls can implement and execute network access policies, but traditional firewall technology focu

The SPI register of S5PV210 cannot be assigned a value-Linux general technology-Linux programming and kernel information. for details, refer to the following. I am using the Samsung S5PV210 film, Linux2.3.35 kernel, and then write SPI communication. the following problems are encountered: I used the ioremap () function to map the physical address of the SPI regi

Code One:1 //******************************************************************************2 //Description:spi slave talks to SPI master using 3-wire mode. Data is sent3 //To the master starting at 0x00 and increments. Received Data from the4 //Master is expected-to-start at 0xFF and decrements with each transmission.5 //******************************************************************************6#include 7 CharMst_data =0x00, Slv_data =0XFF;8 voidM

In the process of using Linux, you may encounter system clock and hardware clock inconsistency, that is, Date,hwclock--show see the clock is inconsistent. The Linux clock is divided into system clocks (systems Clock) and hardware (real time

Pending correction 1.Clock Skewclock Skew = Clock path delay to the destination synchronous element-clock path delay to TE source synch ronous element.Note that clock skew only mentions path delay, but in practice the phase of the clocks may be different for destination synchronous element and source synchronous elemen

The LCD and CPU cables are divided into control lines and data lines. The control lines are generally based on the SPI protocol. We initialize the LCD registers through this. Under the premise that the output format of the main chip is fixed, LCD adjustment is the rest of the initial registers. Generally, we need to care about this part of LCD transplantation. The data line is used to transmit pixel data to the LCD, which generally does not need to be

About SPI in Data Manual 2.3.18 serial peripheral interface (SPI)Up to two spis are able to communicate up to 18 Mbits/s in slave and master modes in fullduplexand simplex communication modes. the 3-bit prescaler gives 8 master modefrequencies and the frame is retriable to 8 bits or 16 bits. the hardware crcgeneration/VerificationSupports basic SD card/MMC modes.Both spis can be served by the DMA Controller

1 /** @brief Function for initializing a SPI master driver.2 *3 * @param [in] p_instance Pointer to SPI Master driver instance.4 */5 Static voidSpi_master_init (nrf_drv_spi_tConst*p_instance)6 {7uint32_t Err_code =nrf_success;8 9nrf_drv_spi_config_t config =Ten { One A. irq_priority =App_irq_priority_low, -. Orc =0x80, -. Frequency =nrf_drv_spi_freq_1m, the. Mode =Nrf_drv_spi_mode_0, -. Bit_ord

worry about this. Metric SPI The default vert.x does not log any metric information. The Vert.x returns an SPI for other implementations and what can be added to the classpath. This metric SPI is an advanced feature that enables it to fetch events from vert.x and collect metrics. For more information about this, you can query the API documentation. In the case

1. What is the SPI for JavaSPI is all called (Service Provider Interface) and is a service delivery discovery mechanism built into the JDK. There are many frameworks that use it to do service expansion discovery, simply put, it is a dynamic substitution discovery mechanism, for example, there is an interface, want to run the dynamic to add to it implementation, you just need to add an implementation.Specifically, in the jar package "src/meta-inf/servi

The SPI-driven migration under Linux2.6.32 is shown in the following illustration: the following needs to modify some of the kernel code, the following actions: 1. Modify the arch/arm/mach-s3c2440/mach-mini2440.c file Add the following code after the include header file code line SPI Add by Shiguang#include #include static struct Spi_board_info s3c2410_spi0_board[] = {[0] = {. Modalias = "Spidev",. Bus