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BLE-NRF51822 tutorial 3-SDK framework profiling NordicBLE technology exchange group 498676838This section describes the framework and does not involve too much code details. 51822 of the official sdks are actually not framework-resistant. What is a framework? For example, TI's ble sdk has an operating system abstraction layer (OSAL) which is a round training scheduling. You need to create tasks according to their methods. In essence, SDK 51822 only

router can belong to only one regionASBR to redistribute external routes into routers in OSPF except for the Special Area OFPF stubOSPF Neighbors:Hello update time 10 seconds, dead time 40 seconds premise-point-to-DOT network and broadcastHello update time 40 seconds, death time 120 seconds premise-NBMA; point to multipoint; point to multipoint non-broadcastRouter Exchange Hello information establish neighborHello package content: Hello dead time must be the sameArea ID must be consistentThe a

that the radiant charm, feel it that ancient spirit of the character, unconsciously fell in love with batch processing (halo, How is Love?) What does a batch deal have to do with love? Answer: No! ）。 Again "gossip": To learn batch processing, DOS basic must be in prison! Of course, brain flexibility is also a very important aspect. Example one, first give a most easy batch script let everyone and it face familiar with it, the following lines of command to save as Name.bat and then execute (in t

In a star wide area network topology that is centered at one end and connected to hundreds of nodes through digital channels, if you use the traditional network connection mode, the limited processing capability and high availability of network devices are two major factors restricting technical solutions. With the launch of a new generation of broadband access technology and equipment, new network connection solutions are also coming soon. The new network access solution is to use the core swit

-vlan) # no sh Switch1 (config-vlan) # exit Switch1 (config) # valn 20 Switch1 (config-vlan) # ip add 192.168.2.1 255.255.255.0 Switch1 (config-vlan) # no sh Switch1 (config-vlan) # exit Switch1 (config) # int range f0/0-1 Switch1 (config-if-range) # switchport trunk encapsulation dot1q Switch1 (config-if-range) # switchport mode trunk Switch1 (config-if-range) # no sh Note: the link between layer-3 switching and layer-2 switching is a

result is still 4 or even 3 or 2. Although the game is extended in the program, this can make the replacement table richer, although static evaluation is also used, but when static evaluation is not used, the speed is not very good, although empty step pruning is used, the improvement of chess power is much more important than the time consumption. Therefore, the slow speed is all due to our evaluation function. However, I decided to use the current

-separated broadcast domain It can be seen that the broadcast frames sent from PC1 are only forwarded to other ports in the same Vlan, that is, Port 2 belonging to the same red Vlan, but not to the ports belonging to the blue Vlan. In this way, VLANs divide broadcast domains by limiting the range of broadcast Frame Forwarding, thus improving network efficiency and security. Vlan can be understood as logically dividing a switch into several vswitches, and these vswitches do not communicate with e

Raspberry Pi advanced GPIO library, wiringpi2 for python Use note (3) GPIO operations, gpiowiringpi2 The core function of the GPIO library is to operate GPIO. GPIO is the "general input/output" interface, such as lighting up an LED or relay, or using iic spi 1-wire and other protocols, reading and writing data are all useful for GPIO. It can be said that without GPIO, Raspberry Pi can only be used as a smal

, we only need to implement the Drive interface. In fact, this is also the difference between java relay and interfaces. we actually define a template through the interface, and the methods in the interface are known in most cases, so we can dynamically modify the method using the reflection method. 2. Using interfaces, we can better implement polymorphism and pass interfaces as parameters. 3. We can implem

1, the power outlet quality problems. Suggest replacing a try. 2, the power supply board capacitor burned. Check the computer board capacitance, if the capacitor is raised, it is the motherboard capacitor burned, to get the computer City repair shop (about 20~30 yuan) can be done. 3, the computer power is burned, plug in the power to start the computer, to obse

effect. If multiple elements are on the same Canvas, animation will inevitably need to be erased and re-painted. If there is a coverage between elements, erasure needs to be considered. Of course, the simple method is to re-draw the entire canvas based on the positions of all elements. Therefore, in code design, we need to separate different elements. Each element has its own draw method and draw a Canvas in order. Analyze the elements required by the game: 1.

at the examiner and show confidence!Generally, it starts with "HoW do you think. Do not pause during conversations between two people. This will give people a sense of being poor. When you thinkYour partner is almost speechless, so you can connect it immediately! Another part is to ask questions to each other. When the examiner issues the question to your partner, you should immediately consider:. Be sure to think for the other party, so that you will not be confused when asking questions.After

[Background description] The company has an internal DI-604LB + Broadband Router and a layer-3 switch. To prevent broadcast storms in the network, the Administrator has created three VLANs on the layer-3 switch. The company uses DI-604LB + Broadband Router Access to the Internet, in order to make the three VLAN clients can be connected to the network through the router, DI-604LB + Broadband Router and the u

databases are associated with it, it is difficult to dismantle these relationships, When we can not clear the time will be redundant, that is, the existence of similar tables in different databases, as the business grows, the data synchronization of this table becomes a soft rib of the database, and eventually it becomes the whole database system of the short board or even the whole system of short board.　

Experimental content, steps and experience: the understanding of the experimental process, the understanding of the knowledge points in the experiment instruction book. (1) Why do I need to manually configure the installation files after double-clicking the Giveio and JTAG drivers? Because the installation file only frees up the drive files and does not add the hardware device to the system, it needs to be handled manually. (2) How does the Development

, # aipsreg_opacr4_offset] ; Set all mprx to be non-bufferable, trusted for R/W, ; Not forced to user-mode. LDR r0, = (0x77777777) STR r0, [R1, # aipsreg_mpr0_offset] STR r0, [R1, # aipsreg_mpr1_offset] STR r0, [R2, # aipsreg_mpr0_offset] STR r0, [R2, # aipsreg_mpr1_offset] Memory initialization 1.7 Configure the relevant pins of DDR2 as DDR2 input, for example: Figure 3 By setting iomuxc_sw_pad_ctl_grp_inmode1 [9] to 1, the DDR2-related pins such

. If multiple elements are on the same canvas, animation will inevitably need to be erased and re-painted. If there is a coverage between elements, erasure needs to be considered. Of course, the simple method is to re-draw the entire canvas based on the positions of all elements. Therefore, in code design, we need to separate different elements. Each element has its own draw method and draw a canvas in order. Analyze the elements required by the game: 1. Bo