Re: BF592. GPIO mode. The voltage supplied to pin PG1 falls.
Hi Sachin, If to give supply voltage on PG1 (on P4.14), voltage doesn't fall. We have two EZKIT-LITE. And on both there is this effect.Tell please as in this forum to attach the file to the message.I...
View ArticleRe: 在BF60X上生成的linux内核的memory是如何分配的
You can view the system memory information, and process information by checking from the /proc, for example:1)cat /proc/meminfo2)cat /proc/pid/status and cat /proc/pid/maps The job is done by...
View ArticleRe: AD5933 supply
Hello Miguel, Sorry for this misunderstanding, I wanted to said that I tried, on the one hand, your suggestion (AD5933+AFE+switch) and it works well.On the other hand, I tried to use two AD5933...
View ArticleRe: BF592. GPIO mode. The voltage supplied to pin PG1 falls.
HI Dima, If I understand correctly ,you are connecting PB0 from the inverter of Push button (SW8) to PG1. The inverter output measures 3.3 V when it is not connected to PG1 but it falls down to 2.9...
View ArticleADE7878 returning wrong data
HiI am using ADE7878 on my energy metering board, (designed by my own based on ADE7878 evaluation board)Although the board is designed for 3 phase measurement, I have started testing with single phase...
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Re: Linearity Error AD7767
Hi JohnnyI tried your filter settings with 15Ohms serial and the 2,2nF to GND. 10nF was removed. The result looks very bad. Linearity error increase to 2%. Seems that my opamp isn't able to drive the...
View ArticleRe: Qt MultiThreading for BF548
I am doing building a GUI for pocketsphinx speech recognition API. When the button is pushed, it starts recording speech in PCM (signed 16 bits, 16 kHz, 32 frames and mono channel). I am running the...
View ArticleRe: AD9880KSTZ-150 problem
Hi Dave, Thanks. I know that this ic is on its way to be obsolete,and i'll choose new one for the next generation,but still, in the current products, it is what we've got. We use 1080p video, and none...
View ArticleRe: Multiple AD5933 using one ADG728
Hi,You just need to connect a 16x mux (ie ADG1606), all 16 parts can share SCL line. Answering your question, remember that the pull-up resistor should be connected between mux and SDA pin. Regards,Miguel
View ArticleRe: BF592. GPIO mode. The voltage supplied to pin PG1 falls.
Hi Sachin, Thanks. Voltage doesn't fall.And nevertheless as in this forum to attach the file to the message? RegardsDima.
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How about the duty cycle maximum parameter when I use ADP1047 for 650w PFC stage
I do a PFC stage for 650w which use ADP1047 switch freq = 60KChoke = 370uH When I checked the duty cycle during the VAC pin valley @Vin=230VWhy the duty close to 95% ? Is it right ? (see the attachment...
View ArticleRe: How to port VDSP asm L1_data_b?
how to use the L1 in Linux is documented here: blackfin.uclinux.org/doku.php?id=uclinux-dist:on-chip_sram
View ArticleRe: ADT75 internal clk frequency
Hi Moto, The internal oscillator frequency is 130KHz. Are there any other devices in the system that could be creating this noise? Are you using a switch mode power supply to supply power?Try isolating...
View ArticleRe: How to port VDSP asm L1_data_b?
Hello Aaronwu, Your link is almost as good at explaining how to use L1 sram in c kode, as the one I posted. I like the "sram_alloc" that it mentions. However, that wasn't what I were asking for. How...
View ArticleADE7763 stops accumulating energy after restoring from NO LOAD condition
Hi friends, I have designed 1-PH energy meter using ADE7763 ic.till now i got success with all the parameters like KWh, KVAh, Volt, Current, PF, Frequency, KW.but i have noticed a problem in the energy...
View ArticleRe: ADXL001 bode diagram
Hello NevadaMark Sorry, I think I have generated some confussion around here. The angles I meant were at 5kHz not 800Hz. I attach figures (.fig and .pdf) of all the data compiled together: Model (R=0...
View ArticleBF548 DMA SPORT RX behavior
Hello all, I have a custom made board based on the BF548 processor and have a question regarding the SPORT interface. I have the following situation : I am using SPORT1 as RX with external clock...
View ArticleRe: Integer period sampling using AD5933
Hi Miguel, Thanks for your input and patience. I guess, sampling an odd amount of half-periods of the signal will give us problems due to DC offsets (and low-frequency noise) e.g. from input bias...
View ArticleError Initializing ad193x HW Parms
I am using the BF537, and am trying to setup and communicate with the ad1939 4-IN,8-OUT CODEC.The ad1939 is SPI-controlled, uses I2S (TDM mode), and uses SPORT 0. PROBLEM: After successfully calling...
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