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[FAQ] Where can I find TI-RTOS (or SYS/BIOS) FAQs?

September 19, 2019, 9:23 am
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I'm looking for frequently asked questions (FAQs) for TI-RTOS (or SYS/BIOS). Can you point them to me?

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Scan button in Bq Studio

September 19, 2019, 9:30 am
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Greetings, 

I'm trying to generate a golden image for the BQ27542 module. I wanted to monitor the states of the registers while going through the learning cycle but the scan button is blurred and cannot be clicked. 
On the bottom right of the learning cycle screen the message : "No acknowledge from device" is also shown. 

Can someone provide any clarifications about these problems ?

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CCS: Java NullPointerException on hover expression

September 19, 2019, 9:32 am
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Tool/software: Code Composer Studio

Hello,

I am using CodeComposer Studio 9.1.0.00010, but I noticed this problem already appearing on CCS 8 after some updates:

Whenever my mouse is over an expression without a value, like

#define ABC

I get an error message box indicating a java.lang.NullPointerException. This is really annoying, as it always appears, when I move my mouse around. Is there a possiblity to switch off this kind of hover without switching off ALL hovers? Or is there a fix or other workaround?

Regards

Klaus

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DRV8305-Q1: DC calibration and charge pump questions

September 19, 2019, 9:35 am
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Part Number: DRV8305-Q1

Dear all,

I have some questions regarding the DC calibration.

  •  How long does the DC calibration take? How long is the current measurement inactive after start of the calibration? (disconnect load / shorting to GND the current shunt amplifier inupts)
  • does the offset correction take place in the driver (on HW level) or it has to be realized in software?
  • is there any application note or other document which describes the calibration in detail?

Also one question regarding the charge pump:

when the chips' Enable is set to high then there are pulses at Pin 43. The recommended 47nF capacitor is connected. The pulses happen at a frequency of 500kHz which can lead to EMC problems. Is there any way to mitigate these pulses?

Thank you very much for the answer!

Best regards,

Benjamin Balazsi

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CC2640R2F: CC2640R2F: Sensor controller studio how to run task testing for a event handler code block ?

September 19, 2019, 9:39 am
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Part Number: CC2640R2F

how to run task testing in scs for the simple button debounce scs task project ?

initialization code block :

gpioCfgMode(AUXIO_XS_BUZZ   , GPIO_MODE_OUTPUT);
gpioClearOutput(AUXIO_XS_BUZZ);
// Set up the first interrupt trigger
evhSetupGpioTrigger(0, AUXIO_I_BUTTON, 0, EVH_GPIO_TRIG_ON_MATCH);

execution code block: empty

event handler A code block:

// If a button edge has been detected (not yet debounced) ...
if (state.isDebouncing == 0) {

    // Store the state (do not read the pin, as it may have changed since the trigger)
    output.buttonState ^= 1;

    // Start 200 ms debouncing interval
    evhSetupTimer1Trigger(0, 200, 2);

    // Update state
    state.isDebouncing = 1;

// When debouncing has been completed ...
} else {
    // Alert the System CPU application when the button is pressed
    if (output.buttonState == BUTTON_PRESSED) {
    timer0Start(TIMER0_MODE_PERIODICAL, 4000, 0); // 3kHz
    for(U16 n=0;n<100;n++){
        gpioToggleOutput(AUXIO_XS_BUZZ);
        timer0Wait();
    }
    timer0Stop();
    }

    // Start listening for the opposite button state
    if (output.buttonState == BUTTON_PRESSED) {
        evhSetupGpioTrigger(0, AUXIO_I_BUTTON, BUTTON_RELEASED, EVH_GPIO_TRIG_ON_MATCH);
    } else {
        evhSetupGpioTrigger(0, AUXIO_I_BUTTON, BUTTON_PRESSED, EVH_GPIO_TRIG_ON_MATCH);
    }

    // Update state
    state.isDebouncing = 0;
}

termination code block:

// The currently enabled event trigger must be cancelled manually
evhCancelTrigger(0);

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LSF0204: driving too strong?

September 19, 2019, 9:40 am
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Part Number: LSF0204

Hi Sir,

Here is the waveform from LSF0204 which measurement from 1.8V side I/O.

Net name:

MDC_BCM16K_1P8V_R

MDIO_BCM16K_1P8V_R

We found the mater driving too strong, and already tuning the pull up resistor value as 91 ohm, but still can see this waveform,

DO you have any idea how to tuning the pull up resistor value to fix it?

Thanks

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CCS/TMS320F2808: Connecting CCS to eZdsp TMS320F2808

September 19, 2019, 9:43 am
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Part Number: TMS320F2808

Tool/software: Code Composer Studio

I am trying to connect to Spectrum Digital eZdsp for TMS320F2808.
 I am using Code Composer 9.1. on Windows 10.
 
 I contacted SD and was told that this device contains an internal jtag and all I need to do is connect directly to the USB on my laptop.


 When configuring the Device on the General Project tab I selected the Variant (280x Fixed Point and TMS320F2808).
 The Connection: list only contains choices for XDS560V2 STM USB Emulator or XDSPro Emulator. When I press the Verify using either
 of those choices I receive  "E_RPCENV_IO_ERROR(-6) No connection: DTC_IO_OPEN::dtc_conf"
 I have also tried un-checking the "Manage the project's target-configuraiton automatically"
 I checked the Windows device manager and I can see the "SD USB Based Debug Tools - Spectrum Digital eZdsp28xx USB" listed so I believe the drivers are installed correctly.
 
 Is there any info on how to correctly configure for use with this device.

Thanks.

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TPS54225: Output volage is not normal

September 19, 2019, 9:44 am
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Part Number: TPS54225

Dear TI Experts

I am now using TPS54225，12V to 5V,2A

When power on, the output voltage is 9V and then be pulled down immediately~

   we have done many experiments： changed the Inductor 、add output Capacitance、use DC power supply， but nothing makes sense, Can you give me any suggestions ?Thank you very much~

Here is the output wave and the SCH(the same as wenbench)

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DIX4192-Q1: What's the difference between DIX4192-Q1 and DIR9001-Q1 regarding the receiving function?

September 19, 2019, 9:47 am
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Part Number: DIX4192-Q1

What's the difference between DIX4192-Q1 and DIR9001-Q1?

we a little bit confused because the datasheet format is different.

I need to know like what DIX4192-Q1 can do and what DIR9001-Q1 can't do.

Can you provide the comparison table between these two device regarding the receiving function(DIR)?

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OPA365: Cannot import the OPA365 TSM file to TINA

September 19, 2019, 9:50 am
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Part Number: OPA365

Dear team,

I want to use TINA simulate a OPA365 circuit, there is no existing OPA365 model in TINA .

So I need download TSM file from OPA365 one page, but the OPA365 TSM download is a PDF file, and it cannot be recognized by TTINA.

How to download a OPA365 TINA model file and import it to TINA? Can you provide a OPA365 TINA model?

Thank you!

Best regards

Yunjing

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TAS2505-Q1: Power supply timing

September 19, 2019, 9:56 am
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Part Number: TAS2505-Q1

Hi,

<Question1>
I have a question on “Figure 3-1 Analog Supply provided after Digital Supply” on page 45 of the “TAS2505 Application Reference Guide”.
Figure 3-1 specifies the power supply timing.
Is the start and end of the time specified to be 10% or 90% of the power supply voltage?

<Question2>
This is a question related to the above. Is there a specification for the power supply shutdown timing?
Is it necessary to turn off the power in the reverse order of power on?

Thanks and best regards,

Narikazu

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TPA3245: TPA32XX LOW SIDE POWER SUPPLY PROBLEM

September 19, 2019, 10:04 am
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Part Number: TPA3245

Hello, i have just finished my pcb, on wich i will include some tpa 3245 chips. There will be multiple tpa chips,one for each way (3 way system), the high voltage power supply will be from an 300w toroïdal transformer and the low voltage power supply will be of an set of 3X18650 3300mah batterys in serie, with a bms, to get the maximum sound quality out of the system. But i have a relatively important ask: as the power output is directly from the batteries (whose the signal quality is the best possible among all the power supply solutions, the signal is linear and almost free of any noise), and the charge of thoses batterys is important, is it realy usefull to put the high frequency RC filter (where there is a resistor that dissipate power) before the GVDD_AD and GVDD_CD pins? I also see that, those resistors aren't present on the EVM of the tpa3245 (only a 100nf capacitor to bypass very high frequency signals), but this board use a linear regulator that, by definition, generate more noise than batterys. The set on batterys will be connected to all of the amplifiers of the board (3), so the power supply will be common .Did you just advise me to put 100nf capacitor or more, like 220nf for example, or it's necessary, regarding of my configuration, to put resistors to form an rc filter?

Thanks in advance.

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66AK2E05: sysfs access to ALE Table

September 19, 2019, 10:09 am
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Part Number: 66AK2E05

Does anyone know where I can find a document that descrbes the details of using sysfs to modifiy the contents of the ALE table.

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[FAQ] DRV2604: Haptics Drivers Selection

September 19, 2019, 10:19 am
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Part Number: DRV2604

Hi,

When selecting our haptics drivers products, it is important to compare which features are supported by the devices and which of them are required for the end application. Here there are some useful questions that may help for the device selection:

- Which type of actuator is required?
- Which range of output frequency and voltage the device are needed?
- Do I need predefined haptics effects?
- Do I need to control the device through I2C?
- What package type do I need?

In order to simplify the haptics driver selection, here it is an useful table to compare the most popular of our haptics devices that support LRA and ERM loads.

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WEBENCH® Tools/FILTERPRO: FilterPro DT

September 19, 2019, 10:12 am
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Part Number: FILTERPRO

Tool/software: WEBENCH® Design Tools

I have used FilterPro DT in the past for differential MFB low pass filter design.  I have recently switched from Windows 7 to Windows 10 and when I installed FilterPro DT it is able to run the Wizard but at completion, no other action can be taken.  The program appears non-responsive.  No options are active.  I tried to use the Webench tool but i do not find differential filter support available in it.  I have installed FitlerPro DT from the TI site on two different machines both running windows 10 with the same result.

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CCS/TMS320F28379D: debugging problem in flash memory of LAUNCHXL-F28379D

September 19, 2019, 10:33 am
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Part Number: TMS320F28379D

Tool/software: Code Composer Studio

I have purchased a LAUNCHXL-F28379D recently.
I am trying to execute an example flash program given in c2000ware package.
FILE:   flash_programming_cpu01.c
The building process of the project is completing successfully but when I am trying to load/debug the program to the CPU the following problem shows up.

C28xx_CPU1: File Loader: Verification failed: Values at address 0x86000@Program do not match Please verify target memory and memory map.
C28xx_CPU1: GEL: File: E:\ccs_work\flash_programming_cpu01\CPU1_FLASH\flash_

programming_cpu01.out: a data verification error occurred, file load failed
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INA233: Logic level threshold drift over temperature

September 19, 2019, 10:34 am
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Part Number: INA233

Hello,

I am using the INA233 in a noisy power supply application and am having trouble communicating with the INA233 at hot temperatures (85degC).  One aspect I noticed where the INA233 differs from other PMBus chips is the logic low threshold level.  The INA233 has a maximum 0.4V logic low threshold level whereas other PMBus chips may have a 0.8V maximum logic low level.  My hypothesis at this time is that the logic low level threshold is drifting over temperature and the noise in the system is exceeding that threshold, resulting in failed communication.  So, I have two questions:

  1. Are communication problems with the INA233 over temperature a known issue?
  2. Can you provide data / graphs of the logic level threshold drift over operating temperature?

Any insight would be helpful.  Thanks.

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DDC112: DDC 200MSPS read 4 Photodiodes Currents

September 19, 2019, 10:46 am
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Part Number: DDC112

Hi, 

I am looking for an ADC with current inputs to read 4 Photodiode currents and convert to digital outputs simultaneously. 

The digital output going to PC via USB

My conversion speed requirement is >=200MSPS,  

I found the DDC112 that seems to tick all the boxes but the conversion speed, unless it does? 

Are there any other DDC's you could recommend?  

Or am i better off TIA -> High speed ADC for this conversion speed requirement. 

If so what would you recommend in that case also. 

Your help is much appreciated 

regards 

Calex

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BQ24610EVM: PG goes HIGH as soon as CE is HIGH/turned ON

September 19, 2019, 10:14 am
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Part Number: BQ24610EVM

Hi,

I have replicated the BQ24610EVM circuit on a custom PCB. When I power the circuit on (CE LOW) everything looks ok, i.e. PG indicates power is good. As soon as I turn on CE (HIGH), PG goes HIGH which indicates that there is some fault on VCC but I am unable to figure out what the fault is. I do not have a battery connected and I have omitted BATFET from the circuit. 

Any pointers on where to start looking?

Thanks

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AM5729: Current SGX driver git branch

September 19, 2019, 11:03 am
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