iio oscilloscope

Handlekernel paging request at virtual address F8f2fe18PGD = 80004000[F8f2fe18] *pgd=1bce9811, *pte=00000000,*ppte=00000000Internal error:oops:807 [#1] PREEMPTModules Linked In:Cpu:0 not tainted (3.0.101-2790-gc248ed7 #274)First verify the I²c, the oscilloscope display output, and measured the device addr is also 0x1a.Alsamixer configuration is also all pull high, exit after re-entry, is also right, can be saved and read out.I2S data is still not the

creative, but the technology is limited to lead to the creation of creativity. and a creative to product realization, far less than the hacker marathon, the creation of the marathon as simple and easy, not only need to clarify its real needs, whether it is feasible, in this process also need to work with the team to do product planning, hardware development, app development, UI design and so on.In the smart hardware 36-hour development contest, not only to provide the developer with technical s

We know that the cable is the basis of the network, if you do not well identify the use of the cable, you will not become a qualified engineer.The BNC cable is the copper shaft cable that we use for CCTV, which is used today as a signal input/output probe in an oscilloscope, although the appearance and the traditional cable are somewhat different, but the function is similar. It is mainly used in the network between the operator optical end machine to

STM32 F4 Clock SourcesGoal:Routing clock sources to the microcontroller output pin (MCO1) high-speed internal (HSI) clock is 16mhzhigh-speed Externa L (HSE) clock is 8MHz (very precise) PLL CLK are configured to being 84MHz because I have a 100MHz oscilloscope (unfortunately Can ' t visualize the Max 168MHz)#include "mcu_config.h"int main (void ) { // Initializing and clocking pa.8 rcc_mco1config (RCC_MCO1SOURCE_HSI, rcc_mc

#defineClk_freq (10000)#defineCore_freq (168000000)Static voidTim_gpio_config (void) {gpio_inittypedef gpio_initstructure; //Enable Gpioa Clock__hal_rcc_gpioa_clk_enable (); //Configure PA8 pin as CLK output-to-CK InputGpio_initstructure.mode =gpio_mode_af_pp; Gpio_initstructure.pull=Gpio_nopull; Gpio_initstructure.pin=Gpio_pin_8; Gpio_initstructure.speed=Gpio_speed_high; Gpio_initstructure.alternate=gpio_af1_tim1; Hal_gpio_init (Gpioa,gpio_initstructure); //Enable GPIOC Clock__hal_rcc_gpioc_clk

thermometer is placed in the liquid to be measured, the optics are placed in the light path, and so on. These include: including relations, side-by-side relations, concatenation relations, and the connection relationship, two instruments are connected in a certain way, indicating that the two instruments have a specific connection relationship. This connection can be either a connection made by a user with a mouse interaction, or a connection established through a configuration file setting. Co

(or in the YZ plane) at -94°/s speed. Note that the minus sign indicates that the device is rotated in the opposite direction. By convention, rotation in one direction is positive. A good gyroscope specification will tell you which direction is positive, otherwise you'll have to test which direction of rotation will cause the output foot voltage to increase. It is best to test with an oscilloscope, because once you stop the rotation, the voltage will

In contrast to the boost circuit, the buck Circuit is a DC-to buck Circuit, and the simulation shows that the lower pressure efficiency is higher, the voltage is slightly higher than a point of buck efficiency is not flattering.。 I don't know what's going on.Simulation Circuit:Duty ratio D is set to 0.5, u0=ui*d, so the output voltage theory calculates a value of 0.5VThe oscilloscope can see that the output voltage is close to 0.5v, but assuming the i

RFID ExplorationLouis Yi, Mary Ruthven, Kevin O ' Toole, Jay PattersonWhat does it do?We made an Radio Frequency ID (RFID) card reader and when attempting to create a long-range spoofer, created an jammer W Hich overcomes card ' s signals.The reader uses filtering circuitry following a 125kHz driven resonator to produce the returned FSK signal from the HID BR and RFID proximity cards used around Olin College. Reading was initially performed by capturing data with a

1. Stm32cube Configuration 1.1 DAC configuration1.2 TIM6 Configuration1.3 using Cube to generate engineering programs, MDK Open softwareto add a statement on the main loop:Hal_tim_base_start (HTIM6);HAL_DAC_START_DMA (hdac,dac_channel_2,(uint32_t *) samples_in[0],500,dac_align_12b_r);compile complete download to core board2. DAC Effect Verification2.1 sine table Generationusing Matlab, a sine array of 500 points is generated. Y=ceil ((2048/2-1) *sin (0:PI*2/500:2*PI) +1200); plot (y);

and other data, as well as observation and measurement results, constantly drive code into the deviceAdd, delete, and modify rows.The so-called "test" is that you add, delete and modify at the same time to continue to:L Observe the feedback information through the serial port;l Measurement of each power supply pin voltage through a multimeter;L measure each pin by oscilloscope on the clock (input and output) frequency of the chip ( including the meas

are no gaps, between them.The device has a to-see at least 3 chirp pairs before assuming that's the hub is high speed capable.Switching to High speedAt the device disconnects its 1.5K pullup resistor,The applies the high speed terminations (using it full speed data driver in SE0 mode),and is thus in a, and perform high speed data transmission and reception.The hub would continue to send chirp pairs up until 100-500 us before the end of Reset,and the device would monitor these chirps.At the time

principle is very easy, the implementation should not be too complex). This is the part that inadvertently satisfies the principle of orthogonality (I do not know at the time), it is not related to the detailed encapsulation and decoding of data at both ends, so in LabVIEW different Tab, I can arbitrarily define the need to complete the task. Only receive rendering data. Or just send a set of parameters, or both, or the oscilloscope just shows two se

angle is not correct at idle speed, the initial ignition angle should be adjusted, and if the ignition advance angle is incorrect, the ignition advance control line and the crankshaft position sensor and igniter should be checked.5. Check if there is no clear cylinder. Can do single cylinder break fire, oil break test.6. Check all spark plugs, HV lines, ignition coils. If there is an abnormality, it should be replaced. Ignition oscilloscope can be us

In contrast to the boost circuit, the buck Circuit is a DC-to buck Circuit, and the simulation shows that the lower pressure efficiency is higher, the voltage is slightly higher than the buck efficiency is not flattering. I don't know what's going on.Simulation Circuit:Duty ratio D is set to 0.5, u0=ui*d, so the output voltage theory calculates a value of 0.5VThe oscilloscope can see that the output voltage is close to 0.5v, but if the input voltage i

Platform: rk3288 of Rui-coreFulinuxThis article allows reprint, but please specify the source: http://blog.csdn.net/fulinus****1, the hardware environment arbitrarily select a gpio pin as the output of the heartbeat, select an unused Spi0_csn0, as shown in the backplane schematic diagram:corresponding to the rk3288 on the top of the roof is GPIO5 _ B5 _ u pin,2, the software environment in the Kernel/arch/arm/boot/dts/rk3288-tb_8846.dts file is configured as follows:Diff--git A/arch/arm/boot/dts

amp may oscillate; CF and RF generate 0 points to offset the poles after adding cf. The general value of the CF>CI,CI is the input capacitance of the OP amp and the total capacitance of the input foot stray.2. Off-loop compensation method,A small resistor on the output string of the op ampConnected to the rear stage, between more than 10 and dozens of euros can be, the specific value and the input capacitance of the latter circuit, can try different resistance values, to obtain a stable outputP

, it is not a occupation, not even called a job.Finally, after the opportunity to learn, the boss gave me a software project to do (before I came to the company, the boss plans to let that part-time person to do). Do a software system, drive PCI data acquisition card, acquisition of analog signals, not only to have real-time acquisition, but also have DMA high-speed sampling. The data is then processed, analyzed, and reports are generated. The system also needs to have virtual

= 168/2=84mhz. Unfortunately, my oscilloscope is too slow for this.At least, 4 clock cycles is required to write one data. Data Latency (datlat lowest value is 2). There is one cyle to give the address, and the cyle of latency, one cyle for give the data.At max FSMC speed (~84mhz), after dividing the clock is 4, the 16-bit parallel transmission would only be ~20mhz.Bursts is possible up to + bits (both 16-bit data words). When using this feature, the

(cleaning), toothbrush (SPA);Hot Air Soldering station, for SMD Welding, for soldering iron temperature is not enough, can help increase some welding temperature. smoking Miriam, absorbing welding is the smoke that protects your lungs and eyes. suction tin wire, for solder patches, use suction away excess solder. Flux , rosin, solder paste must use strong flux, the effect of leverage! Rosin is effective for fixing patches! Solder, lead-free solder is better, solder joints relatively strong, hig