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PGA460: Application Questions

February 22, 2018, 12:04 am
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Part Number:PGA460

Dear TI Team.

I am going to develop a flow level meter with Ultra Sonic.

I am reviewing the PGA460, but I would like to see if there is a history of design in the flow level measuring instrument.

And on the PGA460 there is no pin to sense the temperature of the ultrasonic transducers. Can you tell me how to implement it?
In TDC1000, pin is designed to detect the temperature of ultrasonic transducers with RTD pin.

Please let me know if there is another suitable solution.

Thanks.

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LM27402: LM27402 Output Fail Problem

February 22, 2018, 12:12 am
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Part Number:LM27402

HI

I having trouble using the LM27402SQ/NOPB(WQFN Type)

I built a circuit to get 12V/4A output with 19V input. but It was fail.

I used TI Webench as a reference circuit, and the information is as follows.


When VDD is measured, a 0.7 V sawtooth waveform or sine wave is output. I would like help.

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CCS/MSP430F5359: failed to configure heap size larger than 32768 bytes

February 22, 2018, 12:13 am
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Part Number:MSP430F5359

Tool/software: Code Composer Studio

When I configured the Heap size of the device larger than 32768 Bytes, function malloc cannot work any more. I found a variable named memsize had overflow in file memory.c. Because its type is integer. 

 I am using CCS 7.3.0 Compiler version is 17.9.0.STS.

Is there any solution for this?

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MSP432P401R: Replacing the XMSP432 of the Black launchpad with MSP432 Production Silicon.

February 22, 2018, 12:22 am
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Part Number:MSP432P401R

Hi Everyone,

Just want to ask if I will be going to replace the original MCU placed on the MSP432 Black launchpad

with the production type MSP432P401R, instead of using the original XMSP432P401R.

Will this affect the programming performance of the built in XDS110 on the board itself?

I want to do this because of the issue last time that the XMSP version has an errata on ADC14.

In which, this causes the jumping reading even if filters were supplied and using a good LDO to power it on.

Please advise. 

Thank you,

Leo 

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RTOS/CC2640R2F: Multiple channel ADC conversion with uDMA

February 22, 2018, 12:23 am
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Part Number:CC2640R2F

Tool/software:TI-RTOS

Hi,

I'm using Sable-x R2 (CC2640R2F 5XD) with simplelink_cc2640r2_sdk_1_50_00_58 SDK. I can get samples from one ADC channel by using adcbufcontinuous example. Is there a way to use uDMA with 4 channels?

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TUSB213: The relation between EQ setting and different cable

February 22, 2018, 12:27 am
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Part Number:TUSB213

Hi,

Our setting.

EQ level2 , Req=3.9kohm.

DC boost, Mid DC boost.

We do the eye diagram test use the same setting for TUS213 but different USB cable.

The results are different. Longer cable with better performance.

If we want to get better performance for the worse result, how to optimise the setting?

with cable1, 142cmwith cable2, 160cm

Thanks.

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TSW14J56EVM: Is there any way to skip plotting graphs in HSDC Pro GUI?

February 22, 2018, 12:31 am
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Part Number:TSW14J56EVM

Hello,

I'm trying to collect data continuously using ADC34J45EVM and TSW14J56EVM. I also use the HSDC Pro GUI automation DLL to program it. The problem is that, I guess the data collecting speed is slow because the GUI plots time domain and FFT data. If I collect samples more than 10,000,000 (10M), it takes about 4 second to be done. I measured time programmatically, anyway (from Pass_Capture_Event (TimeoutInMs) to HSDC_Ready (TimeoutInMs)).

So, I guess I can reduce the time if I can skip plotting graphs, I read the user guide of HSDC Pro GUI and manual of the automation DLL, but I couldn't find the way.

Or, my guess is wrong? If so, is there any way to make it faster?

Sorry for my poop English. :)

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BQ24171: request schematic review

February 22, 2018, 12:31 am
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Part Number:BQ24171

(Please visit the site to view this file)Hi,

Could you review above schematic, and please let me know whether there's any potential problem?

thanks,

TS

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CCS/CC2640R2F: CC2640R2F

February 22, 2018, 12:36 am
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Part Number:CC2640R2F

Tool/software: Code Composer Studio

Hello,

I am using Code composer studio V7.

I use  ble5 _ app_ble _ server program using the CC2640R2 LaunchXl board.

I am making the UART program.

The function I use is:

void SPPBLEServer_enqueueUARTMsg(uint8_t event, uint8_t *data, uint8_t len).

Here the meaximum length is 20 as I am not getting 20bytes of data at a time.

How to change the lenth value to get more buffer size.

My total data is 27 bytes and I want to compare the 25th byte and first byte.

if(( pMsg->pData[0] == 0xFE)  ) ---get the answeer.

if((data[20] == 0xFD)) ---not working.............So i need to increase the length.

Please help me.

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Linux/PROCESSOR-SDK-AM437X: How to disable UART0 console on am437x gp evm

February 22, 2018, 12:42 am
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Part Number:PROCESSOR-SDK-AM437X

Tool/software: Linux

We want to use UART0 for a different purpose on the am437x gp evm.

I have tried the following:

Commented out this part in am437x-gp-evm.dts

/*
    chosen {
        stdout-path = &uart0;
    };
*/

Then in u-boot promt

setenv console null

saveenv

When booting again after this printenv indeed shows

console=null

but console output still goes to uart0. Is there anything else I need to do and is this at all possible ?

Travers

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TPS3813K33-EP: SM320F28335PTPMEP

February 22, 2018, 12:44 am
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Part Number:TPS3813K33-EP

Hi,

I'm using TPS3813K33-EP with SM320F28335PTPMEP.

1) I need to guarantee watchdog at power up of my system,before DSC start-up.

I see from datasheet that TPS3813K33-EP watch dog start after the first rising edge of WDI, so watchdog window will not able before uC stratup. Is it right ?

2) I'd like to use TPS3813K33-EP as 3,3V monitor, but the threshold( 2.93 V ) is under the Device supply voltage, I/O, VDDIO min of DSC ( 3.135V ).

Could be not strong solution ? Wich kind of problem could I have ?

Regard

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TMDSEVM5517: McSPI not working, in own code or CSL examples.

February 22, 2018, 12:46 am
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Part Number:TMDSEVM5517

Hello again, E2E.

I'm trying to get the McSPI module running on the evaluation board for the C5517.

Failing to get my own code to trigger the module, I downloaded the CSL examples and have imported the Master DMA example (c55_lp\c55_csl_3.08\ccs_v6.x_examples\mcspi\CSL_McSPI_MasterDma_Example).

The pins are not doing anything when I run the code. I have switched the EBSR to set SP1MODE to GPIO and tried flipping around the pins multiplexed with CLK, CS0 and MOSI, and verified that I am in fact checking the correct hardware pins. But the McSPI code doesn't actually seem to be doing anything on the pins, even though the DMA runs and increments addresses, and the McSPI module transitions the STATL EOT bit to Complete when the code has run.

I see nothing on the pins with a logic analyzer, apart from a CS0 transition from high to low when I set the MODULCTRLL MS bit from slave to master.

Any ideas on what could be wrong?

Best regards

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DAC902: DAC902

February 22, 2018, 12:50 am
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SN74LVC4245A: Voltage Translation 3.3V to 5V with HZ Output

February 22, 2018, 12:51 am
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Part Number:SN74LVC4245A

Dear Community,

I am looking for a voltage translation device like the SN74LVC4245A but with only 4 bit instead of 8.

I also only need one direction from 3.3V to 5V but I need enable to put my output in 3 state.

Many Thank for any advice, as I didn't found something through the search function.

Best Regards,

Xavier

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Linux/PROCESSOR-SDK-AM335X: Kernel crash

February 22, 2018, 12:52 am
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Part Number:PROCESSOR-SDK-AM335X

Tool/software: Linux

Hi,

I am working with beaglebone black customized board. SD card booting linux TI-SDK Kernel version 4.9(SDK v04_02_00_09) working fine with custom board. While booting with TI-SDK linux kernel 4.4 not working (SDK v03.03.00.04) , got kernel panic. But both the kernel version's are working with beaglebone black board. What could be the issue? Kindly guide me.

Attached the kernel panic log. What would cause this issue ?

More over I wrote EEPROM data to my customized board. Can we get any kernel error if EEPROM contents are not correct ?

Is this issue could be HW or SW ?

(Please visit the site to view this file)


Regards,

Thalapushpam

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CDCE913: request schematic review

February 22, 2018, 12:56 am
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Part Number:CDCE913

Hi,

Could you review below schematic, and please let me know whether there's any potential problem?

Is this output possbile?

thanks,

TS

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TPA3221: driving 100-ohm loudspeaker through a transformer

February 22, 2018, 12:56 am
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Part Number:TPA3221

Hi,

A customer wants to drive a 100-ohm loudspeaker by TPA3221, in either way shown below.

(A) impedance conversion with an output transformer for audio amplifier

(B) impedance conversion with a switching transformer, in previous stage of LC filter

He wants to know about technical concern points of these methods.
If you notice some problem, could you tell us about it?


Best regards,

Akio Ito

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msp430f149: BSL synchronization error

February 22, 2018, 12:59 am
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Part Number:msp430f149

Hello,

I have same issue as below link

I have go through it. Mr.lane replied that i have to load BL_150S_14x.txt file in controller before i start BSL.

Please explain in detail how i will load this file in controller as well as specify address details if any required.

i also have MSP-FET tool for JTAG programming.

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DP130SSEVM: DP130SSEVM design files and link training in sink application

February 22, 2018, 12:59 am
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Part Number:DP130SSEVM

Dear TI Team,

i'd like to use the DP130 in a sink application for 4k UHD LCD.

1. Is it possible to get the evaluation board manual, schematics and other relevant design files as a reference?

2. Regarding link training:  For a sink application the automatic link training needs to be switched of to set fixed levels/values for the DP130 output lanes. These should be configured by I2C. Will it also be necessary to implement the link training for clock and EQ on the input via I2C ? Or will this still work automatically? If not: Would be sufficient to use a external controller that polls the I2C registers ?

Best regards,

 KA

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AFE4300: AFE4300 BCM formula's

February 22, 2018, 1:00 am
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Part Number:AFE4300

Dear Sir,

From TI documentation we are able to derive BMI, FM, ICW, ECW, TBW, FFM but what about the other parameters like S-FAT%, V-FAT%, FAT%, RM, MUSCLE%, Metabolic age (body age),BONE MASS, MUSCLE MASS,

& also how to calculate the FAT%, MUSCLE% for TRUNK, ARMS, LEGS & WHOLE BODY separately

Kindly share formula's & documentation for the same

Regards,

Amol

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