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CDCI6214: 32.768KHz
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TPS7A8101: Voltage on EN pin
Part Number:TPS7A8101
The datasheet is a bit confusing and unclear about the voltage for the EN pin.In section 6.1 it says that Vin for EN must be within –0.3 V and VIN+0.3 V. A footnote also says "V EN absolute maximum rating is V IN + 0.3 V or +7 V, whichever is smaller".
In section 7.3.2 it says "The enable pin (EN) is active high and is compatible with standard and low voltage, TTL-CMOS levels".
In section 6.5, two examples are given for the minimum required voltage on the EN pin.
My case is that I use the TPS7A8101 to convert 1.2 V (4 % tolerance) to 0.9 V. Output current is about 400 mA. Can I connect the EN pin to VIN?
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WebSock Camera SDK Example
Hello,
In websock camera sdk example on sending one request that is capture message I am getting n number of times the hello string in response . I am seeing this responses in Wireshark. How can I achieve one request one response ?? as I want to write this response data to a file so I only need one response for one request .I am attaching wireshark file too in which you can see that I am getting n number of times hello string in response. Many Thanks.
My Code :
void CameraAppTask(void *param)
{
UINT8 Opcode = 0x02;
struct HttpBlob Write;
// InitCameraComponents(640, 480);
while(1)
{
if(g_close == 0)
{
//Write.uLength = StartCamera((char **)&Write.pData);
unsigned char* c = "hello\0";
Write.uLength = 6;
Write.pData = (UINT8*)c;
if(!sl_WebSocketSend(g_uConnection, Write, Opcode))
{
while(1);
}
}
}
}
(Please visit the site to view this file)
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CC3120 Uniflash issue
Hi,
I trying to use uniflash tool to upload files to my CC3120 card but i found this 2 issues:
- If I connect CC3120 to the MSP432P401R. I run uniflash from cmd, I get this messages:
C:\ti\uniflash_4.2.2>dslite.bat --mode cc3120 device info
Executing the following command:
> C:\ti\uniflash_4.2.2\simplelink\gen2\bin\SLImageCreator.exe device info
For more details and examples, please visit processors.wiki.ti.com/.../UniFlash_v4_Quick_Guide
Config file (cfg.json) doesn't exist, using defaults
INFO:root:FTDI not detected, trying XDS
INFO:slbootloader.slbootloader:Connecting to device
INFO:slbootloader.slbootloader:Power off
INFO:slbootloader.slbootloader:Set break signal
INFO:slbootloader.slbootloader:Power on
Traceback (most recent call last):
File "<string>", line 3161, in <module>
File "<string>", line 3157, in main
File "<string>", line 3136, in cmdline
File "<string>", line 2870, in command_device_info
File "<string>", line 752, in connect_device
File "U:\slbootloader\slbootloader.py", line 392, in connect_with_reset
File "U:\slbootloader\slbootloader.py", line 276, in _expect_ack
File "U:\slbootloader\slbootloader.py", line 307, in _read_data
slbootloader.slbootloader.BootLoaderError: Timeout reading data
SLImageCreator returned -1
- If I connect CC3120 directly (moving J8 jumper).
Config file (cfg.json) doesn't exist, using defaults
INFO:root:FTDI not detected, trying XDS
INFO:root:XDS not detected
Traceback (most recent call last):
File "<string>", line 3161, in <module>
File "<string>", line 3157, in main
File "<string>", line 3136, in cmdline
File "<string>", line 2870, in command_device_info
File "<string>", line 737, in connect_device
File "U:\slutils\slutils.py", line 216, in auto_detect
slutils.slutils.DeviceError: Auto detect failure
SLImageCreator returned -1
Any idea about this issue?
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TMS320F28379D: CLA and absolute encoder in the fast current loop example codes
Part Number:TMS320F28379D
Dear Champs,
I am asking this for our customers.
1) CLA in FCL
How is CLA used in our FCL?
Can you explain why CLA can accelerate the computation?
(We cannot reason because even there are two cores (C28x/CLA), it seems CLA still needs to wait for C28x or C28x waits for CLA for the results.)
In our FCL library, it seems CLA codes are not open?
2) In FCL, QEP is used.
If absolute encoder (by CLB) is used rather than QEP, will the latency dominated by the absolute encoder?
We notice in FCL v2, there is encoder interface for Endat, Biss, and resolver.
Can Tamagawa be used as well?
Wayne
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OPT3002: Temperature drift at low lux
Part Number:OPT3002
Dear e2e support,
Do we have any performance results under low lux conditions (<10mLux) over temperature?
Can we provide an algorithm to compensate the temperature drift?
The graph figure 5 on the datasheet is expressed in nW/cm²
Can we get it in Lux, to compare it with the graph of the other OPT such as the OPT3006/7 (figure 9)?
Should we expect a lot of disparities betweens product batchs?
Regards,
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TPS92692-Q1: PWM dimming frequency
Part Number:TPS92692-Q1
Hi
I read some similar question on E2E. However I couldn't get the answer what I wanted. So that , please let me ask.
Our customer are going to use this device at the following conditions;
Buck-Boost ; Iled=2.5A ; SW Freq = 450kHz ; PWM dim Freq = 20~100kHz
How much is the max duty cycle possible at Fsw=450kHz and Fpwm=100kHz?
As it mentioned at past post on E2E I read, it is recommended between 10Hz ~1000Hz. Is Fpwm=100kHz possible?
Regards,
Koji Hamamoto
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EVM430-F6736: IAR Embedded Workbench IDE crashes every time I open the emeter.eww IAR IDE Workspace (project)
Part Number:EVM430-F6736
Namaste Support Executive,
We've recently purchased the MSP430-F6736 EVM Kit for E-metering. For software, I've downloaded the IAR Embedded Workbench v7.11 (Kickstarter 8k code limited). Details are as below.
When I double click and attempt to open the ..\slaa517e\slaa517\SLAA517\Source\emeter-ng\emeter.eww, I'm prompted for a conversion twice, to which I agree. However, the IAR Workbench crashes and prompts me to send the error dump before auto closing. Details are as below.
The ZIP of the Crash dump is additionally enclosed below.
(Please visit the site to view this file)
My questions:
1. I'm unable to find the evm6736.eww project in the slaa517 folder. Everything is specific to evm6733. Is the same code valid for evm6736 kit? The slaa517e PDF under Section 5.2.1 reads as below -
"The folder "emeter-ng" contains multiple project files. For this application, the emeter-6736.ewp project file is to be used. The folder "emeter-toolkit" has corresponding project file emeter-toolkit-6736.ewp. Choose only the projects that have the succeeding terms 6736 for this application. For first time use, it is recommended that both the projects be completely rebuild."
2. How do I resolve my issue to open the evm6733.eww workspace?
3. How do I migrate the code to TI's Code Composite Studio? What is the recommended version of this IDE for building the existing sample code?
Thanks | Regards,
Dipen Shah
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TLV320AIC3254: I2S Input Level
Part Number:TLV320AIC3254
Hi folks,
Do you know what's the registers to read the level of spectrum analyzer?
What's the I2C commands to read it ? Thank you.
Will Liu
Regards,
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TPS2492: Storage temperature range
Part Number:TPS2492
In the datasheet, I can only find the operation temperature (-40C to 125C) but not the storage temperature.
What is the storage temperature range?
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External pars of TPS54308 and TPS54202
I have questions about TPS54308 and TPS54202
Question 1. Output voltage Set Point
TPS54308 : datasheet p.15
TPS54202 : datasheet p.14
(In datasheet)
The 49.9-Ω resistor, R1, is provided as a convenient location to break the control loop for stability testing.
Must we use R1?
We want to reduce external parts.
Are there any concerns if we do not use R1.
Question 2. Feed-Forward Capacitor
TPS54202 : datasheet p.17
(In datasheet)
C6 is not needed when COUT has high ESR, and C6 calculated from Equation 16 should be reduced with medium ESR.
Please tell us the specific numerical value about high ESR and midium ESR.
What value is High ESR?
Whats value is midium ESR?
Question 3. Feed-Forward Capacitor
PS54308 and TPS5402
Must we use C6?
We want to reduce external parts.
We think C6 does not need if we use electrolytic capacitor in output capacitor.
Best regards,
Takahiro Nishizawa
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CC3200: Wake-up resource GPIO selection
Part Number:CC3200
Hi Champs,
Customer found out that pin-multiplexing table which show 2 different descriptions about wake-up resource selection. For GPIO13, in "select as Wakeup Source", it writes "yes" For GPIO17, it writes "Wake-up source" . Could you please tell me is there any difference ? Can customer use GPIO13 or GPIO17 to be wake-up resource ? thanks!
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RTOS/TM4C129ENCPDT: Issue of SD Card on Tiva TM4C129ENCPDT (FR_NOT_READY)
Part Number:TM4C129ENCPDT
Tool/software:TI-RTOS
I'm trying to run SD card example and I'm facing random sd card read write error
SDSPI_open ,The Drive gets mounted successfull but when i try to open a file it gives file not ready error..
I have seen similar issue mentioned below
https://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/t/291450
So im wondering , is this issue fixed ?
Thanks,
Prajnith
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LM25037: PMP11186 data
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drv594: DRV594 Not driving load at maximum current
Part Number:drv594
Hello,
I am using drv594 to drive a 12v/7A peltier for cooling application. I have used the schematic given by ti in application note.
I want to drive the drv594 at its maximum current 3A but currently is is giving only 1A current.
In following conditions output appears as 4.2V, 1A across the peltier:
supply voltage = 5V
Input control voltage IN+ = 0v - 2.5V
In following conditions output appears as 3.1V, 0.7A across the peltier:
supply voltage = 3.3V
Input control voltage IN+ = 0v - 1.5V
As DRV594 should drive the load current according to input control voltage applied to pin but in both supply voltage (5V and 3.3V) condition output current is not changing when there is change in input control voltage.
When i connect 2 peltier in parallel the total current drawn by the 2 peltier becomes 2A. Why this situation is happening?
I want to drive a single peltier at 3A.
What should be done to drive the driver at its maximum current capacity. Please suggest some solution.
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CCS/CC1310: Debian 9 64 bit and libc6
Part Number:CC1310
Tool/software: Code Composer Studio
Referring to the thread:
CCS/TMS320F28377D: FIXED: libc:i386 is not available for Debian GNU/Linux 9 (stretch) 64-bit
as well as the instructions on:
software-dl.ti.com/ccs/esd/documents/ccsv8_linux_host_support.html
In my case the instruction:
sudo apt install libc6:i386
should be:
sudo apt install libc6-i386
Regards
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TMS570LC4357: VECTORED INTERRUPT MANAGER (EMIF_nWAIT signal)
Part Number:TMS570LC4357
Hello,
We are using the TMS570LC4357 and we have question about 6.15. VECTORED INTERRUPT MANAGER (Table 6-39 Interrupt request assignements in the datashet (spns195c)):
Specially a note for EMIF_nWAIT signal below the table 6-39: "The EMIF_nWAIT signal has a pull-up on it. The EMIF module generates a "Wait Rise" intrrupt whenever it detects a rising edge on the EMIF_nWAIT signal. […]"
If we use the pin P3 (EMIF_nWAIT/GIOB[7]) as GIO function and in the same we use the EMIF module without EMIF_nWAIT signal, is there an interrupt generated ?
Best regards,
Christopher
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Single-phase Full-Wave Fan with hall element for Automotive application
We're looking for pre-driver with single hall element application for single-phase Full-Wave fan.
Min Input voltage: 4.5V (System voltage: 5V, 12V and 24V)
Used hall elements: Niceri520/Niceri524 or AKM solution
Control requirements: Speed Closed loop
Comptitions: LB11850 or Apx9211
Customer: WW class fan maker
Is there any similar solution? Or any suggestions on this application? Very thanks.
Regards,
Brian
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CC3220S-LAUNCHXL: Can I use other brands SPI flash taking place of MX25R3235FM1IL0 for CC3220S ?
Part Number:CC3220S-LAUNCHXL
Hi TI enginner
As far as we know, CC3220S launchpad demo uses external SPI flash which brands and part number is MX25R3235FM1IL0., but for consideration in the price of SPI flash, I want to use other brands SPI
flash to replace MX25R3235FM1IL0, Of cause ,both flash parameter like power voltage ,size ..., are same . Can I do it (replace SPI flash) ?
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IWR1443: IWR1443 cascading
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