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ADS1292RECG-FE: the sampling graph of ECG is wrong

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Part Number:ADS1292RECG-FE

Hello

I am sampling ECG with ADS1292R,but the sampling graph seems to be wrong .

this  is my schematic above.

this is my sampling graph above.

I make a test using RA and LA,not using RL.(the part of RL circuit is used  or this is not used ( the pins of RLDINV and RLDIN/RLDREF are connected to AVDD)).

From the sampling graph,I cannot firgure out the ECG.

I have not used the filtering arithmetic yet .

Please help me analyze what is the problem.

Thank you ! 


TPS61197EVM: fault condition

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Part Number:TPS61197EVM

Hi Sir,

My customer is using TPS61197 EVB, now there is a problem and the condition is as below, 

Vin =12V

1. Output  LED 6 serial with 8 parallel , the current is around  960mA (36V) , the fault pin happen and off the system

1. Output  LED 8 serial with 6 parallel , the current is around  840mA (48V) work no problem 

It looks the EVB could provide these two power need ,Is any possible to cause it. Because, we have tested the LED in other power board, the function is no problem

TINA/Spice/OPA615: Output dropout, peak-holding circuit simulation

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Part Number:OPA615

Tool/software:TINA-TI or Spice Models

Hi all, this inquiry is from the deyisupport (Chinese version of E2E community):

Using the OPA6165 to do the peak-holding, the schematic uses the figure 48 in the datasheet without the negative peak-holding as the attachment show. When input a 60ns pulse, the output voltage has a a few hundreds of mV dropout at the falling edge of the input pulse. Please help with the question, thanks.

 (Please visit the site to view this file)

C2000-GANG: Getting Error and then aborted when loading F280049M image

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Part Number:C2000-GANG

Hi,

When my customer try to load a image to gang programmer, the GUI program shows error and then aborted.

Could you let me know why and how to fix it?

Best Regards,

Ted

TPS65131: CCM mode

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Part Number:TPS65131

In the d/s, it mentions below

"At lighter loads, the boost converter uses an additional internal switch to allow current flowing back to the input. This avoids inductor current becoming discontinuous in the boost converter. So, the boost converter is always controlled in a continuous current mode."

I'm curious with CCM. What are the differents between CCM and DCM in boost converter? What's the circuit principle? do you have more detailed description on it?

It looks the chock current would go to the negative region, right? When current goes through back to the VDD, will it save the power energy and increasing the power efficiency?

 

Regards,

Brian

AM3354: Flash tool

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Part Number:AM3354

In fact, my question is, how to burn the system on a new board? What tools? UniFlash v3.4.1? Is there a guide document that can give me a link?

TMS320DM8168: having traouble to capture video ,because i don't have vpss.ko module in targetfs !

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Part Number:TMS320DM8168

Hello .

I wanna to capture video and showing on my LCD . with "gstreamer" or "decode_a8host_debug.xv5T" .

i have create SD card and both of them works well . but when i want booting from NAND . having toruble to capture video !!

when i execute lsmod command : i have hust syslink and ipv6 in my targetfs ! i have vpss.ko and other module in kernel file of targetfs .

but i dont know why i missed them !!

TPS23751: Class 4 Flyback Converter (24V/1.25A)

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Part Number:TPS23751

Hello,

I would like to design a PoE PD with the following specifications using TPS23751.

・Vin(min)     36V
・Vin(max)    57V
・Vout(Nom)   24V
・Iout(max)          1.25A
・Class 4    
・Output Power   30W
・Isolated
・Input Type   DC
・Topology   Flyback Converter

Is there any 24V output reference design?

What is the recommended product of 24V output flyback transformer for TPS23751?

For example,POE300F-24L(Coilcraft)?

Best regards,
Seishin


Linux/AM5726: Reset while booting kernel

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Part Number:AM5726

Tool/software: Linux

Hi all,

I made an SD Card with BSP sdk-linux-am57xx-evm-04.00.00.04. During booting the kernel, board reboots after starting udev . When I remove /lib/modules/4.9.28-geed43d1050, board brings up to login but no modules installed at all. What may be the problem?

***********Board Reset*************

[ 5.110042] omap_rtc 48838000.rtc: rtc core: registered 48838000.rtc as rtc2
[ 5.135038] omap-des 480a5000.des: OMAP DES hw accel rev: 2.2
[ 5.152843] omap-des 480a5000.des: will run requests pump with realtime priority
[ 5.163149] SCSI subsystem initialized

***********Board Reset*************

[ 5.078826] omap-iommu 58882000.mmu: 58882000.mmu: version 2.1
[ 5.118208] remoteproc remoteproc1: powering up 55020000.ipu
[ 5.124448] remoteproc remoteproc1: Unsupported class: 255
[ 5.170942] omap-aes 4b500000.aes: OMAP AES hw accel rev: 3.3
[ 5.188353] omap-aes 4b500000.aes: will run requests pump with realtime priority

***********Board Reset*************
[ 4.900159] remoteproc remoteproc2: 40800000.dsp is available
[ 4.997587] omap-rproc 41000000.dsp: assigned reserved memory node dsp2_cma@9f000000
[ 5.090297] remoteproc remoteproc3: 41000000.dsp is available
[ 5.120448] remoteproc remoteproc1: powering up 55020000.ipu
[ 5.120458] remoteproc remoteproc1: Unsupported class: 255

***********Board Reset*************

[ 5.843810] omap-iommu 40d02000.mmu: 40d02000.mmu: version 3.0
[ 6.044921] palmas-rtc 48070000.i2c:tps659038@58:tps659038_rtc: rtc core: registered 48070000.i2c:tps659 as rtc1
[ 6.067493] mt9t11x 4-003c: input-clock-freq: 32000000
[ 6.067497] mt9t11x 4-003c: pixel-clock-freq: 96000000
[ 6.089939] rtc-ds1307: probe of 2-006f failed with error -5
[ 6.133462] mt9t11x 4-003c: Product ID error ffffff87
[ 6.270300] pixcir_ts 4-005c: pixcir_set_power_mode: can't read reg 0x33 : -121
[ 6.270304] pixcir_ts 4-005c: Failed to set IDLE mode
[ 6.270408] pixcir_ts: probe of 4-005c failed with error -121

*******Login Success*******

INIT: version 2.88 booting
Starting udev
[ 4.224086] udevd[123]: starting version 182
depmod: ERROR: could not open directory /lib/modules/4.9.28-geed43d1050: No such file or directory
depmod: WARNING: -e needs -E or -F
depmod: ERROR: could not open directory /lib/modules/4.9.28-geed43d1050: No such file or directory
depmod: FATAL: could not search modules: No such file or directory
[ 6.560694] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
Starting random number generator daemon.
[ 6.641625] random: crng init done
ALSA: Restoring mixer settings...
/usr/sbin/alsactl: load_state:1729: No soundcards found...
hwclock: can't open '/dev/misc/rtc': No such file or directory
Sun Jan 31 06:56:06 UTC 2016
INIT: Entering runlevel: 5misc/rtc': No such file or directory
Configuring network interfaces... done.
Starting system message bus: dbus.
UIM SYSFS Node Not Found
Initializing the graphics driver ...
PVR:(Warning): PVRDRMSetFD: could not get plugin ioctl base: -22 [69, /pvr_bridge_u.c]
PVR:(Error): OpenServices: drmOpen failed [120, /pvr_bridge_u.c]
PVR:(Error): PVRSRVInitSrvConnect: PVRSRVConnect failed [2572, /bridged_pvr_glue.c]
PVR:(Error): SrvInit: PVRSRVInitSrvConnect failed (4) [37, /srvinit.c]
PVR:(Error): main: SrvInit failed (4) [47, /pvrsrvinit.c]
Starting Dropbear SSH server: dropbear.
Starting telnet daemon.
Starting tiipclad daemon
Opened log file: lad.txt

numProcessors = 5 id = 0 baseId = 0

Spawned daemon: /usr/bin/lad_dra7xx

.
Starting rpcbind daemon...done.
starting statd: done
hwclock: can't open '/dev/misc/rtc': No such file or directory
Starting syslogd/klogd: done
Starting thttpd.
* Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon [ ok ]
Starting Telephony daemon
Starting Lighttpd Web Server: lighttpd.
2016-01-31 06:56:07: (/home/gtbldadm/processor-sdk-linux-fido-build/build-CORTEX_1/arago-tmp-external-linaro-toolchain/work/cortexa15hf-vfp-neon-linux-gnueabi/lighttpd/1.4.35-r1/lighttpd-1.4.35/src/log.c.164) server started
/
Starting Matrix GUI application.
Enabling thermal zones...
***************************************************************
***************************************************************
NOTICE: This file system contains the following GPLv3 packages:
autoconf
binutils-dev
binutils
bison-dev
bison
coreutils-dev
coreutils
cpp-symlinks
cpp
g++-symlinks
g++
gawk-dev
gawk
gcc-symlinks
gcc
gdb
gdbc6x
gdbserver
gstreamer1.0-libav
libgmp-dev
libgmp10
libgmpxx4
libmpc3
libmpfr4
make
parted
swig-dev
swig

If you do not wish to distribute GPLv3 components please remove
the above packages prior to distribution. This can be done using
the opkg remove command. i.e.:
opkg remove <package>
Where <package> is the name printed in the list above

NOTE: If the package is a dependency of another package you
will be notified of the dependent packages. You should
use the --force-removal-of-dependent-packages option to
also remove the dependent packages as well
***************************************************************
***************************************************************

_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|

Arago Project http://arago-project.org am57xx-evm /dev/ttyO2

Arago 2015.12 am57xx-evm /dev/ttyO2

am57xx-evm login:

***********

Regards

cc2538: APSME_TransportKeyReq return 0xa1

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Part Number:cc2538

hi,

we use cc2538 as znp coordinator, there was a problem when coordinator sent key to joining device. the function "APSME_TransportKeyReq" return error code 0xA1 (ZSecNoKey) , have someone know the reason?

thanks!

CCS: CCSv7.2 fails to update caused by failure install of dvt.analysis.traceviewer

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Tool/software: Code Composer Studio

Hallow!

i from this summer i`ve got such error when update CCS v7.2 :

An error occurred while uninstalling
session context was:(profile=epp.package.cpp, phase=org.eclipse.equinox.internal.p2.engine.phases.Uninstall, operand=[R]com.ti.dvt.analysis.traceviewer 4.1.0.201705251038 --> null, action=com.ti.ccstudio.p2.actions.RunCommandAction).
Command failed.

Can it be fixed somehow?

UCC28950: UCC28590 circuit diagram confirmed

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Part Number:UCC28950

QC and QD (VDS) will die when the no-load,Please help confirm the circuit,thanks.

LP2950: Reverse Input-Output Voltage

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Part Number:LP2950

Dear Specialists,

My customer is considering LP2950 and has a question.

I would be grateful if you could advise.

---

LP2950 is PNP voltage ragulator.

In this device, is there a parasitic diode from output to input.

Also is it necessary to add an external diode when considering the reverse current from the output to the input?

In this case, input cap is 1uF and output cap is 1uF.

For example, LP2985 has a parasitic diode inside and external diode is needed.

Is it similar to LP2950?

---

I appreciate your great help in advance.

Best regards,

Shinichi

CC1310: 'MassErase()' not found

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Part Number:CC1310

Trying to Mass Erase a CC1310F32 in UniFlash 4.2.1 fails:

23:56:44:686 log - NWAgentAPI: dinfraConfigue resolved successfully.
23:56:44:821 info - /Applications/ti/uniflash_4.2.1/autoupdate-osx.app
23:56:45:080 error - {}
23:56:46:102 error - {}
23:56:46:105 error - {}
23:56:59:787 debug - Target Configuration. Device: cc1310f32, Connection: TIXDS2XXUSB_Connection, LP: false
23:57:01:500 debug - ufDS, session.configured, partnum of current session = cc1310f32
23:57:01:570 debug - addTargetStateListener on Cortex_M3_0
23:57:05:584 debug - SettingsButtonPressed. Call: evaluate, Action: MassErase()
23:57:05:615 debug - returning new configure
23:57:11:019 debug - configured
23:57:11:191 debug - connect to core IcePick_C
23:57:11:200 debug - IP_TAP_CNTL_0 = 0xA0280025
23:57:11:200 debug - isLocked = true
23:57:12:553 debug - running massErase()
23:57:12:571 debug - cores disconnected: {}
23:57:12:851 debug - deconfigured
23:57:12:852 error - 'MassErase()' not found

MSP-EXP430FR2433: TI Cloud Agent Installation spins forever even though i achived the both of the steps.

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Part Number:MSP-EXP430FR2433

Hello People, as i mentioned above;

I upgraded google chrome. Everytime i try to connect to my launchpad to do heatness sensor app, it appears Ti Cloud Agent installation again and again. 

Also it shows my link above that it is not a safety connection as you see. Maybe my virus program blocks it. 

What are your commnets? Thanks, 


CCS/CCSTUDIO: CCS 7.4 update failure

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Part Number:CCSTUDIO

Tool/software: Code Composer Studio

Hello,

I'm trying to update CCS version from 7.3 to 7.4 on Windows 10 OS.

- I have disabled my antivirus (Eset) :

and tried both the online and offline installer and have administration privileges. I've tried installing in different locations.

- while installing I'm receiving the message:

- The created log file is as fallows:

Log started 12/26/2017 at 09:11:06
Preferred installation mode : unattended
Trying to init installer in mode unattended
Mode unattended successfully initialized
[09:11:06] Found mode 
Executing C:\Users\ASUS\Downloads\CCS7.4.0.00015_win32\ccs_setup_7.4.0.00015.exe --mode win32 &
Script exit code: 0

Script output:
 

Script stderr:
 

Cannot delete file C:/Users/ASUS/AppData/Local/Temp/bitrock_installer.log
Cannot delete file C:/Users/ASUS/AppData/Local/Temp/bitrock_installer_3076.log
[09:11:09] Windows 10 0
[09:11:09] installer_command_line_arguments : 
        
[09:11:09] installer_command_line_arguments : 
[09:11:09] Product Name Code Composer Studio 7.4.0
[09:11:09] Product Version 7.4.0.00015
[09:11:09] 
Preparing to Install
Preparing to Install
Unpacking files
Unpacking files
Unpacking files
Unpacking files
Unpacking files
Unpacking files
Unpacking files
[09:11:12] admin = 1
[09:11:12] installertype = setup
[09:11:13]  
[09:11:13] running C:\Users\ASUS\AppData\Local\Temp/ccs_5abc5259-5a50-4eeb-53eb-2888dec84e48\tcl\bin\tclsh "C:/Users/ASUS/AppData/Local/Temp/ccs_5abc5259-5a50-4eeb-53eb-2888dec84e48/installer_tcl/main_frontend/main.tcl" --installersrc "C:/Users/ASUS/Downloads/CCS7.4.0.00015_win32" --installertmp "C:/Users/ASUS/AppData/Local/Temp/ccs_5abc5259-5a50-4eeb-53eb-2888dec84e48"  --buildid 7.4.0.00015 --installer "C:/Users/ASUS/Downloads/CCS7.4.0.00015_win32/ccs_setup_7.4.0.00015.exe" --bitness 64-bit --os windows --osname "Windows 10" --spversion "0" --timestamp 20171226091109 --AVon false
Executing C:\Users\ASUS\AppData\Local\Temp/ccs_5abc5259-5a50-4eeb-53eb-2888dec84e48\tcl\bin\tclsh "C:/Users/ASUS/AppData/Local/Temp/ccs_5abc5259-5a50-4eeb-53eb-2888dec84e48/installer_tcl/main_frontend/main.tcl" --installersrc "C:/Users/ASUS/Downloads/CCS7.4.0.00015_win32" --installertmp "C:/Users/ASUS/AppData/Local/Temp/ccs_5abc5259-5a50-4eeb-53eb-2888dec84e48"  --buildid 7.4.0.00015 --installer "C:/Users/ASUS/Downloads/CCS7.4.0.00015_win32/ccs_setup_7.4.0.00015.exe"  --bitness 64-bit --os windows --osname "Windows 10" --spversion "0" --timestamp 20171226091109 --AVon false
Script exit code: 0

Script output:
 

Script stderr:
 Error from thread tid000031C8
target thread died
    while executing
"thread::send $m_threadId [subst { $m_display reportError {$msg} } ]"
    (object "::threadedProgressUpdate0" method "::ThreadedProgressUpdate::reportError" body line 3)
    invoked from within
"$progress reportError $msg"
    (procedure "RunInstall" line 10)
    invoked from within
"RunInstall C:/TI/ccsv7/ccsv7/eclipse/ccs_config.xml 2 0 0 0 C:/TI/ccsv7/ccsv7/install_logs/20171226091109/ccs_setup_7.4.0.00015_install.log ::progress..."
called Tcl_FindHashEntry on deleted table

[09:37:02] 
[09:37:02] Error from thread tid000031C8
target thread died
    while executing
"thread::send $m_threadId [subst { $m_display reportError {$msg} } ]"
    (object "::threadedProgressUpdate0" method "::ThreadedProgressUpdate::reportError" body line 3)
    invoked from within
"$progress reportError $msg"
    (procedure "RunInstall" line 10)
    invoked from within
"RunInstall C:/TI/ccsv7/ccsv7/eclipse/ccs_config.xml 2 0 0 0 C:/TI/ccsv7/ccsv7/install_logs/20171226091109/ccs_setup_7.4.0.00015_install.log ::progress..."
called Tcl_FindHashEntry on deleted table
[09:37:02] 
                                    launchCCS:0
                                    createDesktopShortcut:0
                                    createStartMenuShortcut:0
                                    eclipsedir:C:/TI/ccsv7/ccsv7/eclipse
                                

Any suggestions what is the issue?

Thanks,

Amitai

LM3435: Thermal issue when LED open and PWM keep input.

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Part Number:LM3435

Hi Team,

We measured around 100C on the inductor when panel non-connect (LED open) and PWM keep input to G/B/R_CTRL pin.

If we disable PWM input, the temperature back to normal.

I am curious why there is no load, but cause high temperature.

And why PWM affect the temperature even if there is no load.

Thanks

ADS1299: Inquiries of using this part to detect EEG signals

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Part Number:ADS1299

Hi all, this inquiry is from the deyisupport (Chinese version of E2E community), please help to solve this, thanks.

I have bought the ADS1299 EVM kit, and tested the electrocardio(ECG) simulator and actual ECG signal using the external MCU. But the target is to test the electroencephalogram(EEG) signal, and there some questions as below:

1. Using the CC2530 to match with the ADS1299. When transferring the acquisition data with the serial port to the PC, the MATLAB processes the data slower and slower with the increase of the frequency. I am wondering if I should use MATLAB or if I should use CC2530 instead of the better processor?

2.BIAS function. Currently, the 1299EVM kit didn't use the BIAS function, how will this affect the signal dectecting? do I need to use the BIAS when measuring the precision signal such as EEG?

3.Some of the paper about the ADS1299 uses the single-ended input with SRB2 as reference, why don't choose a differential input? And the datasheet shows that the single-ended signal using the SRB1 as reference. What's the difference between SRB1 and SRB2? when choose either one of them, can I just change the register or do I need to change the pin? (Because the reference board have only SRB1 directly conected to the input)

Looking forward to your reply.

LMP92066: In the case of direct DAC output and unused Gate driver

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Part Number:LMP92066

LMP92066 datasheet is described based on use Gate Driver(FETDRV0 and FETDRV1), and DAC output (DAC0 and DAC1) is connect to GND.

Can LMP92066 use the way to DAC output connect PA side directly? (FETDRV0 and FETDRV1 are unused)

If LMP92066 can use these connection, please let me know about change point for schematic from datasheet Figure-39.

(Is there any application note?)

Best regards,

Satoshi

Compiler/CCSTUDIO-C2000: How to create a makefile and run from command line

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Part Number:CCSTUDIO-C2000

Tool/software: TI C/C++ Compiler

Hi, 

     I want to create a makefile to compile the files with TI compiler for F28069 device. And also i want to execute the same from command line.

     Please share relevant documentation or method to achieve this.

Regards

Baskaran

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