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TMS320F28069M: motor ID parameter in user.h file

March 5, 2018, 2:37 am
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Part Number:TMS320F28069M

Hello,

We are using  LAUNCHXL-F28027F + BOOSTXL-DRV8301.

then we load the lab4 and uncheck the user.h param box in InstaSPIN_F2806xM_UNIVERSAL GUI.

After identifying the motor we record  motor parameter from GUI.

In GUI Ls_d and Ls_q showing value in mH.but in user.h file in which form of inductance value required . is it mH or only in Henry.

or should i enter as it is value from GUI in user.h file.

Thanks

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AM5728: The Boot Pin configurations for BeagleBoard-X15 is missing

March 5, 2018, 2:42 am
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PGA450-Q1: Reset Issue During VPWR Ramp Down

March 5, 2018, 2:48 am
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Part Number:PGA450-Q1

I'm using the PGA450-Q1 for distance measurements in a small IoT device. One of our goals is low power. In order to accomplish this, we use a high side P type FET to remove the power from the 7.5V regulator (LM27313).

We are having problems with the EEPROM getting wiped and we suspect the problem lies in the VPWR Ramp Down when we turn the device off. The Application report () would seem to indicate this is where the problem is.

I've done everything to switch the input to the regulator much faster. The problem looks like it lies with the power down time of the 5.2V from VREG. The large 100uF charge capacitor for the transducer can take up to 140ms per 1V between 4V and 3V. As per the application note, this needs to be 1V per 1ms. 

Using an external power supply and the Evaluation board, I achieved the same result. Is there a way to discharge VREG in the PGA450 8051 microcontroller so that when we turn off the power, that we can achieve this recommended ramp down. This would indicate the slow issue is part of the PGA itself.

Is anyone else having a problem meeting this recommendation? Has anyone else found an alternative solution.

-Mike

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TMS320F28379D: IQ math in the above processor

March 5, 2018, 2:49 am
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Part Number:TMS320F28379D

Dear Sir, 

I have a query for FPU unit Processor. I want to ask that If the above processor has FPU unit so I am assuming that this processor is more precise in floating point calculation instead of IQ math. But If I go to the example given by TI for this processor, the examples use the IQ math maximum times. 

So I am a little bit confused that should I have to start development using FPU unit or using IQ math while I am using per unit convention. 

Even for motor control example for FPU based processor has IQ math calculation. 

Please clear it for me.

Ashutosh Bhatt

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AM5728: Install IPC with PSDK4.04

March 5, 2018, 2:49 am
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Part Number:AM5728

Hi ,

We are using SITARA5728 and PDSK4.04.

In the Corresponding SDK IPC installation process(AM5728 procssor support) is not there.

Please let knoow the process to add the same,

Regards,

Biswajit

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Linux/WL1835MOD: Bluetooth not working

March 5, 2018, 2:53 am
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Part Number:WL1835MOD

Tool/software: Linux

Hi All,

I am working on wl18xx module linux 4.1.18.

I am facing problem with bluetooth,it is not properly load the firmware.

once i give hciattach command  it shows below error.

$ hciattach /dev/ttymxc4 texas 115200 

                                                                                                        
Found a Texas Instruments' chip!
Firmware file : /lib/firmware/TIInit_11.8.32.bts
Loaded BTS script version 1
texas: changing baud rate to 3000000, flow control to 1
[  178.281963] Bluetooth: hci0 command 0x0c14 tx timeout
[  178.290882] Bluetooth: Unknown HCI packet type 0e
[  178.295770] Bluetooth: Unknown HCI packet type 06
[  178.300671] Bluetooth: Unknown HCI packet type 01
[  178.305445] Bluetooth: Unknown HCI packet type 25
[  178.310178] Bluetooth: Unknown HCI packet type 0c
[  178.314973] Bluetooth: Unknown HCI packet type 00
[  178.319706] Bluetooth: Unknown HCI packet type 60
[  178.324494] Bluetooth: Unknown HCI packet type 00
[  180.330515] Bluetooth: hci0 command 0x2003 tx timeout
[  180.336317] Bluetooth: Unknown HCI packet type 0e
[  180.341139] Bluetooth: Unknown HCI packet type 0c
[  180.345970] Bluetooth: Unknown HCI packet type 01
[  180.350849] Bluetooth: Unknown HCI packet type 1c
[  180.355617] Bluetooth: Unknown HCI packet type 20
[  180.360418] Bluetooth: Unknown HCI packet type 00
[  180.365151] Bluetooth: Unknown HCI packet type ff
[  180.369876] Bluetooth: Unknown HCI packet type ff
[  180.374665] Bluetooth: Unknown HCI packet type ff
[  180.379395] Bluetooth: Unknown HCI packet type 1f
[  180.384178] Bluetooth: Unknown HCI packet type 00
[  180.388908] Bluetooth: Unknown HCI packet type 00
[  180.393698] Bluetooth: Unknown HCI packet type 00
[  180.398428] Bluetooth: Unknown HCI packet type 00
[  182.413035] Bluetooth: hci0 command 0x100b tx timeout
Initialization timed out.

some times firmware loaded properly.

$ hciattach /dev/ttymxc4 texas 115200


Found a Texas Instruments' chip!
Firmware file : /lib/firmware/ti-connectivity/TIInit_11.8.32.bts
Loaded BTS script version 1
texas: changing baud rate to 3000000, flow control to 1
Device setup complete

Note: wifi is working fine,only problem with  bluetooth.

Please anyone tell me where i am wrong.

Thanks & Regards,

Sankar.

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AM5728: H.264

March 5, 2018, 3:18 am
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Part Number:AM5728

Hi,

we are using AM5728 in our design. We will be doing video processing (H.264 encoding/decoding) with AM5728.We are using gstreamer plugins for that.

i) I want to know about the input formats of videos supported by the H.264 encoder.

ii) Does it supports YUV 4:2:2 format?

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LP8860-Q1: LP8860-Q1 manufacturing delay reported ?

March 5, 2018, 3:22 am
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Part Number:LP8860-Q1

I am working on a new design for a customer where we want to control 4 LED strips up to +24V@50mA controlled via SPI interface. We want to have dimming possibilities for this application. We don't use a microcontroller on this board so we have no PWM signal that we can use for this (most dimmable LED drivers need external PWM).I found the LP8860-Q1 that would be suitable for this application because of the internal programmable dimming feature. However Mouser reports 'manufacturer delays reported' for this device (they have some on stock at this moment). Could you please inform the status of this device? We need around 100 parts from next year when the series will start and a few the next months for our first prototypes. So we want to be sure that we don't get production problems when using this device now. Or do you have a similar device with SPI control and possibility for internal dimming or programmable current setting (4 channels up to +24V/50mA). The LP8860-Q1 looks a little bit complicated for our application but it is the only device I could find with internal programmable dimming functionality. 

Regards


Chris van der Aar

NTS Systems Development

Eindhoven The Netherlands

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AM5716: PCIe1.1 transmit signal

March 5, 2018, 3:27 am
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Part Number:AM5716

Hello,

AM5716 is coupled to another PCIe-device "switch" via PCIe interface 1 (USB_RXP/N0, USB_TXP/N_0) that is shared with USB3.0.

Please see attached eye diagram of receive signal at this PCIe-device "switch".
I tried to measure as close as possible at the receiver.

The signal is asymmetrical. How can it be improved, e.g. via preemphasis?
Which registers and values must be written?

Thank you.

best regards

Udo

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TPS65982: Memory Address for High region

March 5, 2018, 3:35 am
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Part Number:TPS65982

Hi Team,

As we know that High region memory address was changed in the latest GUI tool (maybe from 3.0?), let me ask one quick question.

Is the high region address determined by the Base image. Bin file? Or is it determined by GUI Tool?

My customer decided to manage version information of GUI tool to keep software compatibility. It looks the GUI tool determines the address but they want to know not only the GUI tool but also whether it is necessary to manage the version of Base image. Bin file. 

Regards,

Takashi Onawa

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CCS: CCS file syntax highlighting

March 5, 2018, 3:40 am
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Tool/software: Code Composer Studio

Hello,

I would like to tell CCS to use syntax highlighting of a chosen language for some file with a non standard file extension.

specifically i have a linker command file whose extension is not and should not be .cmd and i want CCS to use the linker files syntax highlighting on it.

So far i have found that under preferences -> fileTypes i can assign a new extension and tell CCS what file type it is. this worked but also has a huge caveat for me - it also cause CCS  treat the file as linker file from all other perspectives meaning it tries to add this file to the total linker script which is not what intended and of course causes errors .

Is there a way to configure only the syntax highlighting for some file type? also can i modify the syntax (colors,...)

Thanks

Guy

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PMP20873: Demo Firmware

March 5, 2018, 3:42 am
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Part Number:PMP20873

Hi all,

I was looking for the firmware for PMP20873 but in some other posts, it is written as the firmware is demo purpose only. I guess it's still for demo and not published yet. May I request the demo firmware?

Thanks in advanced.

Regards

Steve

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AM1806: Evaluating the DDR_DQGATE0 and DDR_DQGATE1

March 5, 2018, 3:50 am
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Part Number:AM1806

Hello,

Can I ask a couple of questions below?:

 

Q1. Please find the DDR_DQGATE1 waveform has a distortion at the rising and the falling edges. Do you think this is harmful or not?

Do you think this level of the distortion could bring erroneous behaviors?

 

 

Q2. Could you please give a brief explanation how the DDR_DQGATE1 is utilized?

My customer requested this to understand your answer to the Q1.

Ex) A timer counts the DDR_DQGATE0 to DDR_DQGATE1 delay and the delay is provided for DDR_DQS timings.

Ex) The DDR_DQGATE1 input is an asynchronous timing to trigger DDR_DQS transition.

 

 

 DDR_DQGATE0 waveform

 

DDR_DQGATE1 waveform with marks at distortions

 

 

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TMS320F28377D: ADC16 reference design

March 5, 2018, 3:53 am
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Part Number:TMS320F28377D

Hello,
do we have any reference design with the ADC16 on the TMS320F2837x or any design rules?

Regards, Holger

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BQ24040 ~CHG

March 5, 2018, 3:58 am
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Hi,

I have implemented circuit for battery charging as seen above.

Input voltage = 5V

Output Voltage measured = 4.2V which is connected to Single cell Li-ion 3.7V 2600mAh battery.

Case1:

Both LED's were ON during charging and LED1 went OFF at 3.65V after 2 hours.

Case2:

Voltage on ST2 (~PG) = 0.07V where LED2= ON

Voltage on ST1 (~CHG) = 2.5V where LED1 = OFF

During the second trial LED1 is showing OFF (but battery is charging).

Why I am not able to see LED1 indication as ON while charging during my second experiment?

Also at what voltage LED1 should turn OFF in CASE1 indicating it has entered termination charge state?

Thanks in advance.

Regards.

Rahul

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TMS320F28069: MCU & DSP difference

March 5, 2018, 3:58 am
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Part Number:TMS320F28069

Please provide me info that whether:

1) C2000 controllers, viz. F2806x are MCU's or DSP's.

There are different sections on TI's website having different products in these.

C2000 Processing and C28x core calls it a DSP and then calls it DSP like performance. Link is here

2) What is the difference between MCU and DSP.

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MSP430FR2433: Latest DALI 2.0 on MSP430 FRAM?

March 5, 2018, 4:04 am
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Part Number:MSP430FR2433

Dear Champs, Do we have any reference code or 3rd party for the latest DALI 2.0 on MSP430 FRAM series? The requirement is to support at least 64 devices within 300 meters. Wayne
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LAUNCHXL-CC1310: How to receive packages with multiple Rx boards simultaneously

March 5, 2018, 4:04 am
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Part Number:LAUNCHXL-CC1310

Hello. I used three LAUNCHXL-CC1310 boards to test RF Tx and Rx. One of LAUNCHXL-CC1310 boards was for Tx, and the others for Rx.

The Tx board sent one package every 500ms, and both Rx boards received the package cyclically. Each time a packet was received, the pin level was inverted once.

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void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
{
    if (e & RF_EventRxOk)
    {
        PIN_setOutputValue(ledPinHandle, Board_PIN_LED2, !PIN_getOutputValue(Board_PIN_LED2));
    }
    if (e & RF_EventRxEntryDone)
    {
        /* Get current unhandled data entry */
        currentDataEntry = RFQueue_getDataEntry();

        /* Handle the packet data, located at &currentDataEntry->data:
         * - Length is the first byte with the current configuration
         * - Data starts from the second byte */
        packetLength      = *(uint8_t*)(&currentDataEntry->data);
        packetDataPointer = (uint8_t*)(&currentDataEntry->data + 1);

        /* Copy the payload + the status byte to the packet variable */
        memcpy(packet, packetDataPointer, (packetLength + 1));

        RFQueue_nextEntry();
    }
}

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But there's a delay between the received package pins of two boards, nearly 10~60us. So how to receive packages with multiple Rx boards simultaneously? or decrease the delay.

Thanks so much.

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CCS/LAUNCHXL-CC2640R2: Project Zero Problem

March 5, 2018, 3:54 am
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Part Number:LAUNCHXL-CC2640R2

Tool/software: Code Composer Studio

Hello, everynone.

I followed the guide of CC2640R2 LaunchPad Project0.

This project should enable you to control the led on your launchpad by Bluetooth.

But After download prebuilt Project Zero App+Stack combined image to the CC2640R2 Launchpad.

I didn't get something like following image show:

instead I get something as following images.

Could anyone help me with this?

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CC3220: sl_WlanPolicySet returns -30964 error code

March 5, 2018, 4:09 am
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Part Number:CC3220

Hello!

Then i call:

sl_WlanPolicySet(SL_WLAN_POLICY_CONNECTION, SL_WLAN_CONNECTION_POLICY(1,0,0,0), NULL ,0);

it returns -30964 error code. I can't find this code in errors.h, what does it mean?

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