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CCS/LAUNCHXL-F28027: Matlab coder generation, code building

March 29, 2019, 3:51 pm
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Part Number:LAUNCHXL-F28027

Tool/software: Code Composer Studio

Dear TI engineer,

I am tring the mathwork coder generation function on launchpad-28027.

I downloaded the file "c28027pmsmfoc_ert.slx" from matlab, and set the hardware implementation as "TI Piccolo F2802x(boot fr0m flash)"

code was successfully generated!

Then I imported the code into ccs, try to build it?.  ( p.s. Am I right or I could do that directly in matlab? )

I have get an error report from ccs:

"../28027_RAM_lnk.cmd", line 133: error: program will not fit into available
memory. placement with alignment/blocking fails for section "IQmath" size
0xd8 page 0. Available memory ranges:
PRAML0 size: 0x1000 unused: 0x2f max hole: 0x2f

I don't quite understand the problem, could you help me out?

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Linux/TI-15.4-STACK-GATEWAY-LINUX-SDK: Need help with Linux for this project

March 29, 2019, 4:26 pm
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Part Number: TI-15.4-STACK-GATEWAY-LINUX-SDK

Tool/software: Linux

Hello all,

I am working on the following guide.


http://dev.ti.com/tirex/content/simplelink_academy_cc13x2sdk_2_10_02_10/modules/154-stack/154-stack_03_linux_project_0/154-stack_03_linux_project_0.html

In task 3 , it asks me to navigate to the directory where the TI 15.4-Stack Linux Gateway SDK is downloaded .run file.

I have it in Downloads , so I navigate there through the terminal and then I modify the instructions to match my exact filename.

The instructions say in step 3:

3 .Follow the installer instructions, accept the license agreement and select a destination path, to extract the SDK content to the Linux filesystem. Wait for the installer to finish.

But nothing seems to happen when I enter the command :

chmod +x ti154stack_linux_x64_2_08_00_04.run ./ti154stack_linux_x64_2_08_00_04.run

I entered ls -al and here is what I get



Any help would be appreciated.

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CC3220S: SPI slave driver with ring buffer

March 29, 2019, 4:42 pm
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Part Number:CC3220S

Is there a way to configure the SimpleLink TI SPI driver such that the receive path automatically fills a ring buffer like the UART ring buffer driver? My application requires this functionality on SPI but the SPI driver documentation doesn't include it. Maybe wishful thinking on my part but I'm hoping the feature is there. Please advise.

In the worst case, I'm thinking I could use driverlib along with the ring buffer utility to make my own interrupt based SPI receiver that calls RingBuf_put() in the ISR. My application would then call RingBuf_get() to consume the data from the ring buffer. Let me know if there is any limitation to consider for implementing something like that.

Thanks  

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TI-15.4-STACK-GATEWAY-LINUX-SDK: Doing this project with the BBB wireless instead of a regular BBB and a cape

March 29, 2019, 4:54 pm
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Part Number: TI-15.4-STACK-GATEWAY-LINUX-SDK

Hello all,

I am following this guide for this project:  

dev.ti.com/.../154-stack_03_linux_project_0.html                 

But instead of using the BBB and a wireless cape , I am using the Wireless BeagleBone Black.

I am not sure which of the steps in step 4 I should ignore in this case , since the BeagleBone Black wireless does not have an ethernet port. It seemed to me first that number 10 in Step4a is where I need to go after finishing task 3, but then that would mean that I won't use the image am335x-evm-linux-03.02.00.05.img.zip it asked to download in step 1 in 4a?

I would like as much explanation as possible on this please. Which are the steps from 4a and 4b that I need to do If I were to use the BBB wireless instead of a BBB and a wireless cape.

Thank you.

Best regards.

Neil.

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TI-15.4-STACK-GATEWAY-LINUX-SDK: Sending an integer such as "90000" from the BeagleBone Black Wireless to the CC1310 via serial UART connection

March 29, 2019, 5:13 pm
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Part Number: TI-15.4-STACK-GATEWAY-LINUX-SDK

Hello all,

I am using this link as my guide to this project:
The only difference is that I am using a BeagleBone Black Wireless instead of the regular BBB, and a CC1310 instead of a CC1350.

http://dev.ti.com/tirex/content/simplelink_academy_cc13x2sdk_2_10_02_10/modules/154-stack/154-stack_03_linux_project_0/154-stack_03_linux_project_0.html

I need help with Sending an integer such as "90000" from the BeagleBone Black Wireless to the CC1310 via serial UART connection (The Mac co processor)

I need the first integer to be fixed to 9 and the rest of the integers can either be 0 or 1. So the smallest integer would be "90000" and the largest would be "91111"

I am not sure on how to achieve that. Any help would be appreciated. Thank you.

Regards.

Neil.

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LM5118: VCC tied to ramp

March 29, 2019, 5:41 pm
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Part Number:LM5118

Hi,

I was curious as to what the conditions are for tying the VCC pin to the ramp capacitor. The 12V, 3A output schematic on the datasheet seems to tie VCC to the ramp without a pull down resistor. However, when designing using the webench tool for 12V, 2A output VCC is just coupled to ground through a 1uF capacitor.

Thanks

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CCS/TMS320F28035: comparator example code

March 29, 2019, 5:42 pm
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Part Number:TMS320F28035

Tool/software: Code Composer Studio

Hi TI experts,

I plan to use the comparator module to limit the a current cycle by cycle. I assume the way to do it is to use comparator to compare the ADC and an internal value, and as long as the ADC is higher, an internal TZ is generated to limit the current.

However, after reading the manual, I did not find any code examples. Do you have any example code, either from ControlSuite or C2000Ware, from which I could learn from?

Thanks,

Ivan

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MSP432E411Y: Is the Power API required in TI RTOS Applications

March 29, 2019, 5:51 pm
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Part Number:MSP432E411Y

I am slogging through the user manual for the Power API. I find lots of information on how to use it but not whether it is required or not. (Also did not find it in the Forum).

I am starting from the Out of the Box demo and Power_init() is called in the Board Set up function. My application will be running with tons of power available, so there is no real need to run in any of the power saving modes.

Can I simply remove the call to Power_init() and ignore any power saving features?

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SN65HVD1050: SN65HVD1050 CAN_H Short

March 29, 2019, 6:31 pm
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Part Number:SN65HVD1050

dear Sir,

my customer used SN65HVD1050, it is failed return back from end customer, we find fin7 (CAN_H) short to the Ground.

there are happened three times for this issue.

below is their schematic, pls check it.

and could you help to suggest what's reason will result in CAN_H short to Ground, and what's the method to avoid this issue.

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RTOS/CC2640R2F: CC2640R2 SRAM not enough space

March 29, 2019, 6:33 pm
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Part Number:CC2640R2F

Tool/software: TI-RTOS

Hello, I use CC2640R2 for the electronic scale project.I'm using an IAR development environment. Currently, there is insufficient SRAM space. I see that there is 2K SRAM space in the sensor controller in the data manual.I use the M3 core of CC2640R2 how to use this 2K SRAM space.Can I define the variable M3 kernel on this 2K SRAM space?If so, how can I operate? Thank you!

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TPS65313-Q1: Request source codes for TPS65313-Q1 PMIC

March 29, 2019, 6:36 pm
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Part Number:TPS65313-Q1

Hello team,

My customer is going to evaluate TPS65313-Q1 in their application, so this team requested us to provide the driver source code or example code for this TPS65313-Q1 PMIC. Would you please send me the relevand codes through email if you have?

Best regards,
DY

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How to convert the sound headphone signal into line output line signal？

March 29, 2019, 6:44 pm
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The headphone signal is 300mV , the line output signal is 2V , help recommend integrated conversion chip?

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CCS/TMS570LS3137: TMS570LS3137

March 29, 2019, 6:57 pm
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IWR6843: LVDS camera emulation

March 29, 2019, 7:18 pm
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Part Number:IWR6843

Our application processor supports MIPI CSI-2 as well as 16-bit parallel camera port.

Unfortunately, IWR6843 drops MIPI support. Can anyone recommend a method besides an expensive FPGA to connect IWR6843 LVDS peripheral to one of these two interfaces?

Perhaps some camera protocol can be emulated in software by inserting sync codes into the data stream?

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ADS127L01: THS4551

March 29, 2019, 7:21 pm
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Part Number:ADS127L01

Following the data sheet of ADS127L01(Figure below), We designed the MFB filter. The reference design is 10R and 22nF, so ithe cut-off frequency is 1/(2 * pi * R * C) = 723798.5Hz. Since our sampling frequency is 128K, we want to design a cutoff frequency at 100kHz following your recommendation. So, we change parameter to 160R and 10nF, which would generate a cutoff frequency at 1/(2 * pi * R * C) =100kHz

However, the test result is not as designed. The input signal amplitude is 0.224V, The input frequency and output signal’s amplitude can be seen at next table, the cutoff frequency is acutally at 10kHz, not 100kHz.

10KHz - 0.222V

20KHz - 0.209V

30KHz - 0.188V

40KHz - 0.180V

50KHz - 0.164V

60KHz - 0.149V

70KHz - 0.136V

80KHz - 0.124V

90KHz - 0.114V

100KHz - 0.105V
110KHz - 0.098V

120KHz - 0.091V


How select the resistance and capacitance of this low-pass RC filter to achieve 100kHz cutoff frequency?

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Linux/ISO3082: Can I use RTS signal of STM32 USART to Control the ISO3082 DE pin ?

March 29, 2019, 7:31 pm
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Part Number:ISO3082

Tool/software: Linux

In my design, Using STM32F103 + ISO3082 to implement the RS485 Communication.
The USART1_RTS is connected to DE Pin of ISO3082. And sometimes the Error ocurred.
I guess the DE timing is wrong.
How to Control the DE ？ Using GPIO or RTS？ Which is preferred ?
I think RTS is specially used for flow control ,but now Error ocurred.
Wait your reply

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CC3220SF: Documentation Error - SimpleLink routes incorrectly contain "en_ap_scan"

March 29, 2019, 7:34 pm
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Part Number:CC3220SF

Hello,

I thought I'd point out a documentation error.

In: http://www.ti.com/lit/ug/swru455g/swru455g.pdf

In Section 9.4.6 the route is listed as /api/1/wlan/en_ap_scan/confirm_req

The correct route is /api/1/wlan/confirm_req

This confused me for a while why it wasn't working until I found the document:

http://www.ti.com/lit/an/swra513a/swra513a.pdf

Which listed the correct route in Appendix 1.

Sections 9.4.8, 9.4.9, and 9.4.10 of the first document may have errors as well, it looks like there was a copy and paste error where "en_ap_scan" made it into the URLs. The string "en_ap_scan" is part of the route to initiate scanning.

cyril 

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LMK05028: JESD204B Support?

March 29, 2019, 8:06 pm
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Part Number:LMK05028

Hello

Does LMK05028 support JESD204B?

if support, Can I Design it as shown below?

if Not support, What's the difference with supported devices?

Regards.


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BQ40Z60: bqStudio, Firmware tab, "Read Srec from Device" fails

March 29, 2019, 8:09 pm
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Part Number:BQ40Z60

What could possibly cause bqStudio, Firmware tab, "Read Srec from Device" to consistently fail?  It gives the status in RED as follows

All other communications seem to be working and consistently, but when I select this function, the BQ40Z60stops responding to commands and it requires me to remove the battery and reinstall before I can regain communications.

-Aaron

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RTOS/TMDSEVM6678: I want to combine the ndk helloworld .cfg file with omp_config.cfg in linalg’s dgemm project

March 29, 2019, 8:24 pm
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Part Number:TMDSEVM6678

Tool/software: TI-RTOS

my question is in the word file(Please visit the site to view this file)

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