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THVD1551: About ESD contact discharge test of the THVD1551 chip

May 22, 2019, 2:46 am
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Part Number:THVD1551

Hi,

It is well known that electronic products need to be tested before leaving the factory.When I took an electrostatic gun and performed an ESD contact discharge test on the unshielded communication bus of the THVD1551 chip, the 6KV ESD contact discharge caused some errors in the data at the receiving end.Is the experiment I described above different from your?What test specifications should I follow in order to make the test result close to the 18KV ESD contact discharge?Please correct my test error. 

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PGA305: Registers assigned both DI Page / Offset and EEPROM addresses

May 22, 2019, 2:47 am
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Part Number:PGA305

Dear Suport team,

In case of registers to which both DI Page / Offset and EEPROM addresses are assigned, such as DAC_CONFIG,

Q1. When writing to the register (Page / Offset = 0x2 / 0x39), will the contents of EPROM (0x40000032) be rewritten?
Or is the EEPROM write to the procedure of 7.3.16.1.2 to the end?

Q2. What happens to the device operation when the data written to the register (Page / Offset) and the EEPROM are different?

Best Regards,
Hirokazu Takahashi

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Linux/AM5728: GPIO status change

May 22, 2019, 2:47 am
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Part Number:AM5728

Tool/software: Linux

Hello , every time when I use

echo 57 > /sys/class/gpio/export

echo out > /sys/class/gpio/gpio57/direction

then the Gpio 's status(the yellow signal) changed .

Is that normal?

In my project ,this is not expected ,please help me.

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RTOS/LAUNCHXL-CC26X2R1: How to set the CC2642 TX Power

May 22, 2019, 2:48 am
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Part Number:LAUNCHXL-CC26X2R1

Tool/software: TI-RTOS

Hi all, 

We found that there are two way to change the TX power. Please refer to the following information.

But these two methods have the different power levels. One can reach -127dbm ~ +127dbm, and the other one only reach  -21dbm ~5dbm.

Could you help to provide some explanations to us?

1. To add GAP_ADTYPE_POWER_LEVEL Into advertData[] or scanRspData[], 

/// TX Power Level: 0xXX: -127 to +127 dBm

#define GAP_ADTYPE_POWER_LEVEL

2. Use HCI_EXT_SetTxPowerCmd(HCI_EXT_TX_POWER_5_DBM) function.

#define HCI_EXT_TX_POWER_MINUS_21_DBM LL_EXT_TX_POWER_MINUS_21_DBM //!< -21 dBm
#define HCI_EXT_TX_POWER_MINUS_18_DBM LL_EXT_TX_POWER_MINUS_18_DBM //!< -18 dBm
#define HCI_EXT_TX_POWER_MINUS_15_DBM LL_EXT_TX_POWER_MINUS_15_DBM //!< -15 dBm
#define HCI_EXT_TX_POWER_MINUS_12_DBM LL_EXT_TX_POWER_MINUS_12_DBM //!< -12 dBm
#define HCI_EXT_TX_POWER_MINUS_9_DBM LL_EXT_TX_POWER_MINUS_9_DBM //!< 9 dBm
#define HCI_EXT_TX_POWER_MINUS_6_DBM LL_EXT_TX_POWER_MINUS_6_DBM //!< 6 dBm
#define HCI_EXT_TX_POWER_MINUS_3_DBM LL_EXT_TX_POWER_MINUS_3_DBM //!< 3 dBm
#define HCI_EXT_TX_POWER_0_DBM LL_EXT_TX_POWER_0_DBM //!< 0 dBm
#define HCI_EXT_TX_POWER_1_DBM LL_EXT_TX_POWER_1_DBM //!< 1 dBm
#define HCI_EXT_TX_POWER_2_DBM LL_EXT_TX_POWER_2_DBM //!< 2 dBm
#define HCI_EXT_TX_POWER_3_DBM LL_EXT_TX_POWER_3_DBM //!< 3 dBm
#define HCI_EXT_TX_POWER_4_DBM LL_EXT_TX_POWER_4_DBM //!< 4 dBm
#define HCI_EXT_TX_POWER_5_DBM LL_EXT_TX_POWER_5_DBM //!< 5 dBm

Thanks.

BR

Trevor

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LM5576: Difference btw LM5576 and LM5576

May 22, 2019, 2:49 am
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XTR116: 4-20mA transmitter with 4 wire sensor

May 22, 2019, 2:53 am
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Part Number:XTR116

Hello,

I am looking for a 4-20mA transmitter to connect to the output of my DAC. I have seen the XTR116 and XTR117 and was wondering if they would work with a 4 wire system? If not would you be able to suggest an alternative?

Any help is appreciated.

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Compiler/CC2640R2F-Q1: Compiler not able to open file

May 22, 2019, 2:53 am
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Part Number:CC2640R2F-Q1

Tool/software: TI C/C++ Compiler

Hi Everyone,

I am working on a ARM Cortex M3 processor device with ti compiler v 16.9.6.

I am trying to compile a source file which contains include path <ti\drivers\ADC.h> throgh command line. The compilation output shows up an error stating that it is not able to open source file <ti\drivers\ADC.h> even though i have included the full path for ADC.h file in compilation command. How CCS IDE is able to reslove ti\drivers\ADC.h path in any source file.

If i am compiling a file without <ti\drivers\..> includes the compilers compiles successfully without any error.

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BQ40Z50: Advanced Charge Algorithm setting between bq2472 and bq40z50

May 22, 2019, 2:55 am
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Part Number:BQ40Z50

1. A cell's operating temperature is 0~45 degree C.

   My battery pack vendor suggest me to set the UTC  -5 degree ℃ , and T1  0 ℃; OTC 50  ℃ and T4 45  ℃

   Is it correct? ( it aleady over the cell's spec on UTC and OTC)

   If I set T1 0 ℃ & T4 45 ℃, Is charging is allowed while themperature is  0 ℃ or 45 ℃?

   (I found that CellTemp report 45 ℃ but the charging function still working.)

2. My system is a tablate with x86 plateform, what firmware version is suggest?

     If I use R1 version, will  be any bugs happened?

      

3. The typical precharging current is 500mA of charging IC,BQ24725

        If I set the Pre-Charging to 200mA, Will the current down to 200mA

4. I don't see any information of  Maintenance Charging current in charging IC ,BQ24725

    can the  charging IC recognize it and run it?  

 

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DRV2605: several DRV2605 on the same I2C bus

May 22, 2019, 2:59 am
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Part Number:DRV2605

Hi,

My customer used 4 pcs DRV2605 in one system and out them on the same I2C BUS. As the slave address is the same, can they use EN pin to select different device? Or they have to use an I2C switch?

thanks.

Brian Zhao

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LM386: what does these cap and resistor use for?

May 22, 2019, 3:00 am
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Part Number:LM386

Hi team,

My customer is using LM386 for their desgin and have few questions about the external component. 

What does R28, C31, C33, R24,C28 are used for as below picture shows？

Thanks!

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BQ34Z100-G1: BQ34Z100-G1 SOC read delay

May 22, 2019, 3:01 am
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Part Number:BQ34Z100-G1

Dear All:

   I use the BQ34Z100-G1 in my E-bike BMS application. I find that when i first connect Pack to the PCB board ， I could only read the SOH，not read the SOC，on the connection, it will take 7~8s  to read the SOC。

can you help explain the what cause the result？Thanks~ 

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Linux/AM5728: BQ25703A : Linux Driver

May 22, 2019, 3:02 am
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Part Number:AM5728

Tool/software: Linux

Hi,

Using BQ25703A IC to connect the battery for our AM5728 Yocto PSDK - 04.02

I saw the forums and came to know there is no specific driver for this IC from TI.

Refereed the below link :

https://chromium.googlesource.com/chromiumos/platform/ec/+/master/driver/charger

I need Two functionalities from the BQ25703A IC as follows at OS run time :

1. Need to know the percentage of battery level form BQ25703A

2. Need to know whether the battery is charging or not.

Can you please tell me the registers which need to be accessed form the software to get these functionalities. 

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Compiler/LAUNCHXL-F28377S: Project creation

May 22, 2019, 3:04 am
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Part Number:LAUNCHXL-F28377S

Tool/software: TI C/C++ Compiler

I tried to create the project in page 13 in attached document and the result is in attached file. I can't find out error causes and inquire TI support.

(Please visit the site to view this file)

(Please visit the site to view this file)

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MSP430FR2353: BSL via Uart , Gangprogrammer not taking in account set password

May 22, 2019, 3:06 am
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Part Number:MSP430FR2353

Hi everyboyd , 

I m using gangprogrammer  and BSL via Uart . everything is fine .

Now I must have password set to protect my code . I enabled  BSL with password and disabled mass erase .

now  I set a password , OK .  but in Gangprogrammer if a set a new password  I can enter  in any case the device memory  , it looks like the gang is ignoiring the password .   

as I understodd  password shoudl be in the inetrrupt vector table  ( address 0xFFE0 e 0xFFFF )  in attach you can see memory in the cases   .

it looks gang jumps(Please visit the site to view this file) no matter  worng password .

please where am I wrong  ?  what should I test /check ?

eragrds

Carlo

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MSP430FR2353: example for max speed runnin in RAM

May 22, 2019, 3:16 am
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Part Number:MSP430FR2353

Hi everybdoy , 

please I must have max mips out of the device for a small routine  ,  I m thinking to have it in RAM .

do yo have an example on code running in RAM ?   so to test it and copy it ?

thank  yo u

regards

Calro

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UCD9248: Maximum voltage on Vin pin with unpowered device

May 22, 2019, 3:18 am
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Part Number:UCD9248

Hello,
I am looking into possible sources of errors on my board that uses two UCD9248 along with PTD08D210W modules.

I am powering UCD9248s from external 3.3V power supply - is it safe for the chip, if this voltage, that supplies V33DIO, V33D and V33A, appears after voltage to Vin pin is applied (via 10k/2k divider from 12V)?

Thank you for your help,

Karol

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CCS/RF430FRL152H: RF430FRL152H programming

May 22, 2019, 3:19 am
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Part Number:RF430FRL152H

Tool/software: Code Composer Studio

And I found out that the connection to the equipment was the same place as the attached photo.
However, looking at the circuit diagram of the connected location is so complicated that I can't even imagine it.
(circuit diagram : www.ti.com/.../tidrex0.pdf)

In the case of RF430-TMPSNS-EVM, I wonder how it was programmed.

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Linux: AM5708 terminal error

May 22, 2019, 3:19 am
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CCS/CC1310: CC1310F32RHB(5*5) LED's not toggling

May 22, 2019, 3:20 am
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Part Number:CC1310

Tool/software: Code Composer Studio

Hi,

I have custom CC1310F32RHB and running I2C example.

This doesn't seem to be happening.

            GPIO_write(Board_GPIO_GLED, Board_GPIO_LED_ON);
            // Sleep inside a task for 800 milliseconds(0.8s)
            Task_sleep(8000000/Clock_tickPeriod);
            GPIO_write(Board_GPIO_GLED, Board_GPIO_LED_OFF);

In the Board.h file Board_GPIO_GLED is assigned to CC1310_LAUNCHXL_GPIO_LED_GED and In the CC1310LAUNCHXL.h file CC1310_LAUNCHXL_GPIO_LED_GED is declared under the CC1310_LAUNCHXL_GPIOName.

I have defined the LED pins as

#define CC1310_LAUNCHXL_PIN_RLED          IOID_9 /* IOID_6 */
#define CC1310_LAUNCHXL_PIN_GLED          IOID_10 /* IOID_7 */

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CC1352P: Information about communication in Sub1Ghz in CC1352

May 22, 2019, 3:26 am
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Part Number:CC1352P

Hi,

i just wants to know some parameters descriptions, for hat purpose they used in coding.

1) Polling message

2) Reporting interval

3)Config message

4) Tracking message

5) Association concept

6) Broadcast message

can collector and sensor can communicate without all parameter, which parameters are mandatory and which we can remove?

how it depends on each other?

Thanks.

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