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AM3358: AM3358 SPI in 9 bit

September 20, 2019, 8:38 pm
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Part Number: AM3358

I have SPi0 and SPI enabled in device tree. I looped back shorting MISO and MOSI and Can receive the send messages provided its all 8 bit word length

The issue is I am trying to talk to St7735S display driver over SPI ,it needs 9 bit command and data transfer.

So I am trying to send tx1[6]={0x01AA,0x0177,0x0188,0x0100,0x01FF,0x0166}; , defined as short int (2 bytes) . but when I receive response its

01AA 5577 and so on. its not correct and nothing happens on display? Any help

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CCS/TDA2SX: how to add camera for new custom board VSDK 3.04 (PDK)

September 20, 2019, 8:55 pm
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Part Number: TDA2SX

Tool/software: Code Composer Studio

Hi,

with respect to Is there any changes required in device tree ??

i am doing changes as like D3 board for my custom board.

1) If, i use TDA2x EVM dts. How to add camera in EVM Device tree for VSDK 3.04

2) If, i use D3 board dts. How to add camera in D3 Device tree.

What are the changes required to do ??

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CCS/CC2564MODA: what is the uuid of the spple service

September 20, 2019, 10:28 pm
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Part Number: CC2564MODA

Tool/software: Code Composer Studio

Hi,

i am interfacing this Bluetooth with other  controller Bluetooth which will act as central .so i need the uuid of the spple service.i need base uuid, spple service uuid , tx characterstic service uuid ,rx characterstic uuid

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DCA1000EVM: How to capture raw data frame by frame from DCA1000EVM

September 20, 2019, 10:32 pm
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Part Number: DCA1000EVM

I fllow the post to real-time capture rarw data by DCA1000EVM:

https://e2e.ti.com/support/sensors/f/1023/t/826017

and use the example code in

'C:\ti\mmwave_studio_02_00_00_02\mmWaveStudio\Clients\AR1xController\api.h'

The example code shows:

int8_t path[20] = "D:\\adc_data_DCA.bin";
retVal = StartRecordData(path, 1);
// TODO: Handle return error value of above API call

// To stop the capture
retVal = StopRecordData();

in order to record data, I insert sleep() function between start and stop,

but It can't guarantee that I capture data frame by frame.

e.g. I use sleep(20000), I can capture approximately 99.7 frame data rather than 99 frame or 100 frame.

So I want to know there is an api or a way to guarantee that I capture data frame by frame,

or I need drop the decimal part in post progress.

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Compiler/TMS570LS3137: Generation of .stb file to .out file using command line

September 20, 2019, 10:44 pm
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Part Number: TMS570LS3137

Tool/software: TI C/C++ Compiler

Hi,

I am working on the Hercules TMS570LS3137 development kit, i wanted to generate the symbol file(.stb) from the .out.

As, in the DDC-I compiler, we can use the dwarf_dumper.exe application to generate the .log file from the .dbg and then using some perl script we can generate the .stb file from the .log .

Is there any other similar way or application that we can use to generate the Symbol File.

Can anyone please help me out in this?

Regards,

Shivam Kakad

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PGA460-Q1: Porblem of returned signal in transformer-driven bistatic mode

September 20, 2019, 10:47 pm
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Part Number: PGA460-Q1

Hi,

I use the EVM  BOOSTXL-PGA460 to test a bistatic configuration with 2 MURATA MA58MF14-7N.

I 've modified the sensor board  to use it in transformer-driven bistatic mode. As indicated in doc :

I've desoldered R36 and connect a second MURATA MA58MF14-7N on J14

Despite of this, I continue to receive the emitted signal in data Path graph:

As you can see in the Data monitor graph I get my expected obstacle returned signal (at 3ms) but ALSO the emitted signal during the first 1.3ms.

Normally in bistatic mode I must be able to detect returned signal at short distance (downto 1 or 2cm) and I was expected a total flat signal from 0ms to 8.192ms except my obstacle returned signal. 

Is there something I forget to do ? A parameter missing?

An idea ?

Bernard FROMENT,

Blue Frog Robotics,

Electronics Engineer

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WEBENCH® Tools/LM3481-Q1: How to get open loop bode plot

September 20, 2019, 11:28 pm
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Part Number: LM3481-Q1

Tool/software: WEBENCH® Design Tools

Hi

I'm in a real trouble, a trouble that I did not understand its source. First I have downloaded LM3481 average model from TINA TI website, the date of release of this average model is 21/04/2015.

I have built a circuit in TINA TI v9.2, in order to perform an AC Simulation. My objective is to get the open loop of my circuit (the powere stage) that will allow me to place the poles and zeros at the appropriate locations to stabilise my boost converter.

the specifications of the boost converter are: 

Vout=12V

Iout=1.8A

L=6u

Fsw=227kHz

Rsense=20m

When i simulate I get a very strange phase diagram, a diagram that has nothing to do with powerstage of boost converter in current mode configuration.

Please, I really need your help, because I have 3 days trying to get the result but I did not. 

The circuit I have used is shown bellow and the simulation file is attached.

In the circuit I have set Vc as output and Vout as output.

(Please visit the site to view this file)

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CC2650: When i receive the command from BLE in cc2650 and then i get data from the analog front end.

September 21, 2019, 12:00 am
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Part Number: CC2650

Hi

I interfacing the cc2650 to the analog front end . The inerface between the cc2650 and analog front end through spi communication. My question is when i receive command from the ble i enable the spi communication and then receive data from the analog front end.

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16bit multi-function LED driver and GPIO controller

September 21, 2019, 12:07 am
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Hello

Does TI have a device like AW9523B descriped as below:

AW9523B is a 16 multi-function LED driver and GPIO controller. Any of the 16 I/O ports can be configured as LED drive mode or GPIO mode. Furthermore, any GPIO can be configured as an input or an output independently. 

(Please visit the site to view this file)

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BQ78350-R1: bq78350-r1

September 21, 2019, 12:33 am
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Part Number: BQ78350-R1

Hi Sir 

what is the use of seal mode and what is the advantage of it.

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UC2526: A signle PWM pulse is missing after certail sequence of Pulses.

September 21, 2019, 12:50 am
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Part Number: UC2526

Dear Sir,

UC2526 is regulating Buck Converter output Volatge.I am Controlling Shut Down pin.But after certain PWM Pulses one Single Pulse is Missing is it Because of regulation or Any problem with hardware.I have used  2000 uF capacitor at Soft Start pin,.Continous shut off and on the uc2526 Shutdown pin.will it cause this problem.I have added Schematics in Previous question 

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LP5024: Trouble getting the LP5024 to turn on LEDS

September 21, 2019, 12:59 am
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Part Number: LP5024

Hello,

Incorporated a LP5024 on a design without doing proper investigation...
Find my LP5024 using the broadcast address and the address set (ADDR0 and ADDR1 pulled down to GND)

Im using 3v3 and measure 1.7v on the vcap.
LED's are common anode RGB from Inolux (IN-S66TATRGB)

Im driving them directly of USB so I measure about 5V on them...

This is the output from my attempt to get them lit up. Nothing happens

*********************** OUTPUT **************************************

I2C scanner. Scanning ...
Found address: 40 (0x28)
Found address: 60 (0x3C)
Found 2 device(s).


Enable Pin is:2 setting to HIGH

Wrote 64 to MYLP_DEVICE_CONFIG0 address
Reading from CONFIG0 = 64
Reading from CONFIG1 = 60 (Which is default)


Setting LED0 color to RGB=128,128,128 using address 0x0F 0x10 0x11
Reading from 0x0F=128
Reading from 0x10=128
Reading from 0x11=128


Setting LED0 brightness to 128 using address 0x07
Reading MYLP_LED0_BRIGHTNESS + ledNumber = 128
Setting LED1 color to RGB=255,0,0 using address 0x12 0x13 0x14
Reading from 0x12=255
Reading from 0x13=0
Reading from 0x14=0


Setting LED1 brightness to 128 using address 0x8
Reading MYLP_LED0_BRIGHTNESS + ledNumber = 128
Setting LED2 color to RGB=255,255,0 using address 0x15 0x16 0x17
Reading from 0x15=255
Reading from 0x16=255
Reading from 0x17=0


Setting LED2 brightness to 128 using address 0x9
Reading MYLP_LED0_BRIGHTNESS + ledNumber = 128
Setting LED3 color to RGB=0,255,0 using address 0x18 0x19 0x1A
Reading from 0x18=0
Reading from 0x19=255
Reading from 0x1A=0


Setting LED3 brightness to 128 using address 0xA
Reading MYLP_LED0_BRIGHTNESS + ledNumber = 128
Setup complete

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ADS1298R: WCT Capacitor 100pF or 1000pF?

September 21, 2019, 12:59 am
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Part Number: ADS1298R

Hey Folks,

We see the ADS EVM is using 100pF for the WCT feedback cap, and we found a thread here which discusses using a 100pF 

cap as well on the ADS1298 here: https://e2e.ti.com/support/data-converters/f/73/p/496049/1792960?pi318173=1

However figs. 107 and 108 in the ADS1298R data sheet show a 1nF (1000pF) capacitor.

I usually assume that the EVM is the more refined design and use that. In addition, we use the ADS1198 in a prior design

and used the 100pF.

So, do we stick with the old ADS1198's 100pF cap or use the 1000pF cap on the ADS1298R?

Thanks in advance,

Kevin

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TLV320AIC3254EVM-K: TLV320AIC3254 EVM NO Microphone Data

September 21, 2019, 1:07 am
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Part Number: TLV320AIC3254EVM-K

Hi,

We are working on http://www.ti.com/tool/TLV320AIC3254EVM-K EVM for evaluation of Stethoscope in PurePath Studio GDE(http://www.ti.com/tool/AICPUREPATH_STUDIO) using sample scripts of AIC3254 just volume/play. All connections & settings are done as per guidelines of EVM User guide.

No data coming in Chat/Data logger in GDE

Also, AIC3254 Aquire Device tried from separate GUI provided. Please let me know how to debug this issue & what other detailed information is required.

Regards,

Vishal Aditya

Embedded Software Engineer

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CC2642R: True random number generator

September 21, 2019, 1:10 am
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Part Number: CC2642R

Hi,

I'm porting my application code from CC2640R2F to CC2642. 

In CC2640R2F i used to generate true random number using function TRNGCC26XX_getNumber(NULL,NULL,NULL);

Want to know how to do the same in CC2642. I've tried many things but nothing worked.

Regards,

Madhusudhan

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BQ76PL455A-Q1: BQ76200 EVM design refernece

September 21, 2019, 1:11 am
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Part Number: BQ76PL455A-Q1

hi mam

i have almost the same issue but only with VM as it shows 0.3V as the value rest all values are right but still not able to obtain values in gui it shows zero for all cells.Please do go through the issue.

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LM5166: Power supply light load noise

September 21, 2019, 1:13 am
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Part Number: LM5166

Hi,

I have a BUCK design working in a light-loaded burst mode operation with audible noise.Some FAEs recommend the following circuits to reduce noise.

I don't understand why this works. Looking forward to your answer.

Jojo

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CCS/TMS320F28027: Multiple ADC configure in TMS320F28027 launchpad.

September 21, 2019, 1:35 am
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Part Number: TMS320F28027

Tool/software: Code Composer Studio

Hello,

I am Sourabh working on TMS320F28027 launchpad. I am unable to configure multiple ADC inputs in TMS320F28027 board. 

Can any one suggest me how to configure it.

 I successfully configure 2 ADC as given in sample code but i need multiple ADC.

Thank you,

Sourabh 

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BQ24210: What is the operating temperature of BQ24210?

September 21, 2019, 1:39 am
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Part Number: BQ24210

Hello,

I found out the junction temperature is -40~+150 degree, is this operating temperature?

webber

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OPA211: Gain Calculation in TI precision lab

September 21, 2019, 1:57 am
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Part Number: OPA211

When i learn the OPA input offset voltage and bias current at TI precision LAB:

video: https://training.ti.com/ti-precision-labs-op-amps-vos-and-ib-lab?cu=14685

PDF: https://training.ti.com/system/files/docs/1100-L%20-%20Vos%20and%20Ib%20-%20Lab%20-%20slides_0.pdf

They calculated the gain of OPA by its equal resistor in page 4-6 at PDF and 01:45-03:52 int the video.

Fig 1 is the topology of circuit, and Fig 2 is the simulation with ideal device and using current and voltage source replace the bias current and offset voltage by me in TINA-TI.

FIG1  ↑↑

FIG2  ↑↑

And also the result I calculated with pencil is equal to my simulation, so I wonder WHY the video using equal resistor and ignored the second OPA's offset voltage and bias current?

Thanks!

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