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BQ51013B: Charging Enable

October 27, 2019, 5:57 pm
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Part Number: BQ51013B

Hi TI,

In my application, EN1/EN2 is controlled by GPIO so that the wireless charging pad stops after charging complete.
We have checked the battery is fully charged and the high level is sent to EN1/EN2 via GPIO to stop operation of the wireless charging pad.
For our products, however, without VBUS, the device will enter sleep mode within 5 seconds and will not wake up until interuption occurs.
Five seconds later, the device enters sleep mode, then disconnects the device from the wireless charging pad and then re-insert it.
Wireless charging pads do not recognize the device and our products do not wake up in sleep.
Do you have any solution?

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CC2652R: Support for BT5.2

October 27, 2019, 6:00 pm
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Part Number: CC2652R

Hello,

Are TI Wireless Conectivity products planned for BT5.2?
Best Regards,
hamada

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CC3120MOD: sl_WlanProfileUpdate(..) returns -14337 SL_ERROR_INVALID_OPCODE when updating password only.

October 27, 2019, 6:07 pm
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Part Number: CC3120MOD

Hi,

I have a system with a CC3120MOD with the 3.30.00.04 driver and 3.11.0.6, 2.0.0.0, 2.2.0.6 service packs.

I can successfully add WiFi profiles and my device otherwise works flawlessly.

However when I try and update a password on a profile I get the return code SL_ERROR_INVALID_OPCODE.

My code to check if the profile exists already is:

s16Status = sl_WlanProfileGet(u16Counter, (signed char *)&s8ProfileName[0], &s16ProfileNameLength, &u8MACAddx6[0], &SecParams, &SecExtParams, (unsigned long *)&u32Priority);

And once I have confirmed my profile exists, and I have the correct profile index, I try and update the password:

SecParams.Type = u8SecurityType; /*SL_WLAN_DONT_UPDATE*/
SecParams.Key = (signed char *)pu8Password;
SecParams.KeyLen = u16STRING__Get_Length((const Luint8 *)pu8Password);

s16Return = sl_WlanProfileUpdate(u8ProfileIndex, NULL, 0, NULL, &SecParams, NULL, 7);
if (s16Return < 0)
{
// SL_ERROR_INVALID_OPCODE = -14337
}

But it returns with the error code.

Can Anyone help?

Thanks.

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UCD3138: NO ONE ANSWERED MY QUESTIONS FOR A LONG TIME,WHY??????????????????????????????????????????????????

October 27, 2019, 6:13 pm
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Part Number: UCD3138

HEY,

NO ONE ANSWERED MY QUESTIONS, WHY?????????????????????????????????????????????????

PLS ANSWER ME QUESTIONS ASAP.

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DRV8301-HC-C2-KIT: Changing source code for permanent magnet synchronous generator control application

October 27, 2019, 6:22 pm
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Part Number: DRV8301-HC-C2-KIT

Dear TI experts,

I need to develop a vector control (field-oriented control) algorithm for a permanent magnet synchronous generator using a three-phase inverter.

The advantage of the DRV8301-HC-C2-KIT is that the inverter, gate driver, and control card unit are all included into one single kit, which is very convenient. I purchased the DRV8301-HC-C2-KIT hoping I could change the source code to adapt it to my generator application. The vector control itself stays basically the same but I do not need the speed control loop (only the torque control loop) plus I need to check / modify the rotor position observer for sensorless case.

From what I saw of the code through Code Composer Studio, it looks like control blocks (PI control, Clarke, Park, ...) are called through libraries that cannot be accessed nor edited. Is that correct?

If that is so I probably cannot use the kit as is for my application. Should I use a development board such as the F28035 Piccolo Experimenter's Kit and start writing the code from scratch?

I would much appreciate if you could help me on this.

Yours sincerely,

N. Denis

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AM5728: Clone mode support for wayland/weston

October 27, 2019, 6:35 pm
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Part Number: AM5728

Hi,

I want to enable clone output mode on HDMI and LCD(LVDS).
Is weston clone mode supported by Processor SDK?

How can I enable clone mode?
Also, please let me know if there are any cautions.

On June 29, 2018, clone mode was supported for Weston's DRM front-end.
This Weston clone mode can be enabled with the "same-as" output section key in the Weston configuration.

Introduction article
https://www.phoronix.com/scan.php?page=news_item&px=Wayland-Weston-Modifiers-Aspect

The commit log for enabling clone mode is as follows.
https://cgit.freedesktop.org/wayland/weston/commit/?id=944dd235b4ff6e5ef64e48f168bb217933c30acb

At the time of the following post, clone mode was not supported, but it seems to be supported now.
https://e2e.ti.com/support/processors/f/791/t/685858

Thanks,
nomoryo

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OPA2237: SOIC-8pin about lead dimensions.

October 27, 2019, 6:37 pm
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Part Number: OPA2237

Dear, Support Team.

My customer checked the pin dimensions for mounting.
I have a question about the dimensions of the solder surface.
http://www.ti.com/jp/lit/ds/symlink/opa2237.pdf
I think that 0.041inch (1.04mm) of D0008A's DETAIL A TYPICAL lead length is short.

Best Regards,
Hiroaki Yuyama

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DRV8837: Can the DRV8837 work normally at an altitude of 3000-4000 meters

October 27, 2019, 6:41 pm
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Part Number: DRV8837

Dear TI Experts~

Please help me check the impact of altitude on the DRV8837 chip. Can the DRV8837 work normally at an altitude of 3000-4000 meters? The product is a E-lock

Thanks,
Robin

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DRV10970: Question for DRV10970

October 27, 2019, 6:42 pm
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Part Number: DRV10970

Hi team,

The customer is experiencing below issue and needs your help.

1. In what form does the FG output speed feedback of the DRV10970 be output to the MCU?

2. For example, takes STM32 as an MCU. In what form does the FG pin output a signal to the MCU? How does the MCU handle this signal?

Thanks.

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FDC1004EVM: FDC1004EVM

October 27, 2019, 6:42 pm
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Part Number: FDC1004EVM

Hello again:

I am still struggling with the FDC1004EVM on my Win7 laptop.

The FDC1004EVM board works fine on my Win10 laptop and connects to the Sensing Solutions GUI. On Win 10 I am running V1.10.0

On ,my 64 bit Win7 laptop, I am also running V 1.10.0 of the GUI. 

The Win7 machine is wholly up to date with Windows Update. 

The FDC1004EVM displays a green LED light when connected to the USB Port. I notice that when the drivers are not installed, the light is red. The DeviceManager displays the EVM as a COM port and insists that the device is working normally.

I installed the Sensing Solutions GUI "As Administrator" and I have run it "As Administrator".

The symptom is the GUI shows "Not Connected" in the lower left hand corner of the screen and the program will not communicate with it.

Can you help me diagnose the problem?

Is there any keyboard ASCII command that I can send to the device using RealTerm, putty or TeraTerm that will help resolve this mystery.

Can the GUI be started from a command window with options to help debug the problem

Is there a linux version of the program that I could try with Ubuntu?

Thank you in advance for your help.

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DRV8844: DRV8844PWP is hot and the logic input pin is broken down

October 27, 2019, 6:46 pm
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Part Number: DRV8844

Hi Team,

The customer is experiencing below issue and needs your help.

The application circuit is shown in the figure above. DRV8844PWP is very hot when 24V positive and negative terminals are connected to VCC24V and GND respectively, so that GND_24V is floating. Observing the temperature with a thermal imager will rise in a straight line, with more than one hundred degrees. How is it caused?

Thanks.

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CCS/TMS320F28388D: Cortex-M4_debugger_connection_error

October 27, 2019, 6:50 pm
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Part Number: TMS320F28388D

Tool/software: Code Composer Studio

Hello all,

When I try to run the CM project on Cortex-M4 core, the following error occured:

Cortex_M4_0: JTAG Communication Error: (Error -1170 @ 0x0) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 8.2.0.00004)

I tried more times again, but the error above still exist.  Pls help me resolve it!

Thanks a lot!

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TL431-Q1: TL431BQDBZRQ1 Capacitor Load Question

October 27, 2019, 6:52 pm
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Part Number: TL431-Q1

Hi Team,

May I know TL431BQDBZRQ1 temp drift error behavior on 85 degree condiction, since customer test TL431BQDBZRQ1 has voltage swing Vpp 400mV in different capacitor load.

Circuit

4nF Capacitance and 400mV swing

1nF Capacitance

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LM3488Q-Q1: LM3488Q-Q1 output 350V

October 27, 2019, 6:53 pm
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Part Number: LM3488Q-Q1

Dear TI team:
    Can LM3488 can support 350V/1mA output application? Can you give me a reference design.

    The customer wants the input voltage to be 5V, I think it can be higher, 12V or 24V.

    Thanks!

Regards!

Eric Shen

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MSP432P4011: The way of the factory reset for MSP432P4011

October 27, 2019, 6:59 pm
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Part Number: MSP432P4011

Hello,

We are trying to do factory reset for MSP432P4011 by following the below document.
www.ti.com/.../slau575k.pdf

However, we cannot do it with MSP-FET.
(We cannot find "Non Debuggable Devices" such as Figure 35.)

Does MSP-FET support factory reset?
If yes, could you tell me the detail procedure and warning points to do factory reset?

Best Regards,
Nomo

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BQ25898: Charging current in the standalone mode

October 27, 2019, 7:01 pm
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Part Number: BQ25898

Hi team,

I see the BQ25898's default charge current is 2.048A. 

Would it be possible to reduce the charge current in standalone mode as 500mA? If yes, how to set?

Regards,

Yoshi

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LAUNCHXL-CC1352P: Sensor - Collector Example behavior

October 27, 2019, 7:03 pm
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Part Number: LAUNCHXL-CC1352P

Hi All,

I have removed "if(Sensor_events & SENSOR_READING_TIMEOUT_EVT)" condition from the Senor's sensor.c and substituted Temperature reading with the number.

I have noticed that Sensor - Collector example once a 3-5seconds loses the connection for a fraction of the second. Collector Device status changes to !Responding for a quarter of the second and Number of Joined Devices turns to 0. Then it comes back to normal (Sensor Adr Temp RSSI) and Number of Joined Devices:1. 

Both launchpads are next to each either.

The connection speed is 5kb/s.

When I switch to 50kb/s speed, these drops occur with the same intervals but the length of the drop falls to the apox 1/20 of the second.

Why does it drop the connection? Is it normal?

Regards,

Edward.

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SN74LVC4245A: Pin1 voltage is abnormal

October 27, 2019, 7:03 pm
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Part Number: SN74LVC4245A

Dear TI Expert~

This chip SN74LVC4245A is used for serial port to receive RX level conversion, and converts 5V to 3V3, so that two devices can communicate normally.


When the master device is in the shutdown state, that is, the +V3.3 and 5V levels of the above figure are all 0; the slave device is turned on, and the RXD_A and other receiving terminals are all 5V high level; the current enters the SN74LVC4245APWR through the pin3. Then flow to pin1 and measure pin1 to 2.5V. However, the master device is not powered on and pin1 should be at 0 level.
This problem exists with machines that use the SN74LVC4245APWR. The current interim measure is to add a diode isolation between the PIN1 to 5V supplies. Please help resolve this issue, thanks.

Thank you,
Robin

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TUSB4041I-Q1: What's the TID for certification?

October 27, 2019, 7:05 pm
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Part Number: TUSB4041I-Q1

Hi, Team:

Can you provide TUSB4041IPAPRQ1 TID ?

Customer is doing the USB-IF certification. 

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TPS54140: SoftStart Time

October 27, 2019, 7:09 pm
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Part Number: TPS54140

Hello, 

There are two questions about TPS54140 soft star. Could you help on this inquiry! Very  thanks. 

1. In the 9.2.2.6, it says the avg. input current to be 0.125A. Where does this current come from?

2. What period is for the soft start time from below waveform Figure 29?

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