Hercules™ Safety Microcontrollers Forum - Recent Threads

Design recommendations for Vcc pins with regulator enabled?

Mathew Maher — Wed, 19 Jun 2013 10:17:57 GMT

If I've enabled the internal 1.5v regulator (ENZ low), and have no need for external 1v5, what are the recommendations for Vcc pins, i.e. are they best left NC, or should they be decoupled (100nf)?

cheers

Mat

TMS570LS31xxUSB Error connecting to the target (Error -2062 @0x0)

Nicholas Hall — Wed, 19 Jun 2013 09:43:17 GMT

Hi,

I have the TMS570LS31xxUSB. I have been able to load programs to MCU a few times using the demos and the demo code. I have just generated my first code from HalCoGen and trying to load it to the MCU I get the following error.

FATAL >> CortexR4: Error connecting to the target: (Error -2062 @ 0x0) Unable to halt device. 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 5.1.73.0)

I'm not really sure what could have caused this, though it did correspond with changeing the erase settings to necessary sectors only. I have tried changing back to full erase and also updated from nowFlash to UniFlash 2.2.0, but am still getting the error message.

I am not yet very skilled with these things so please bear that in mind when giving instructions. Changing the frequency from 140MHz to 10MHz in nowFlash did not make any difference, and neither has disconnecting and reconnecting the board. Could you let me know what I should do in this situation.

Read in ADC RAM 1

Brice Plavonil — Mon, 17 Jun 2013 14:45:57 GMT

Hi,

on RM48x or TMS570LS dev board kit

I set the ADC to read in continuous mode, and set the ADC memory to be 64 on group1. Eventually I set the fifo size to 64 even if I can't figure out what is the link between the adc fifo and the group memory.

I start my conversion ...

and stop the conversion when fifo is full, assuming that the adc RAM contain the 64 values converted.

I realize that in the adc RAM there is more than 256 available values ? is it possible ?

because the TRM says that there are 64 buffers for conversion possible on the ADC,Somewhere else it says that there 1024 buffers ? where is the truth ?

the BNDB part in the ADBNDCR register says that it is possible to have 1FFh x 2 = 512 x 2 buffers ?

How could I know that I reached the accurate number of conversion that I want before reading the adc RAM ?

thank you beforehand.

Brice

H.264 encoder decoder on ARM cortex A9

nikunj rudani — Wed, 19 Jun 2013 08:29:35 GMT

Hello, I want to encode and decode h.264 HP video on ARM cortex A9. I dont want DPS to be involve in encoding or decoding.

My Question is: Can ARM able to encode and decode as good as DSP does. Is there any performance degradation?

Is there any 3rd party library available to satisfy all such need.

Thanks in advance.

issue with RM48L952

Vaidyanathan Balakrishnan — Tue, 18 Jun 2013 08:33:56 GMT

We are using RM48L952 (144 pin package) and I find that when we program the attached Halcogen project into the chip, the chip fails to start. This change seems to be permanent i.e. the chip is lost forever. What happens is that when we debug with XDS100 and CCS, the cursto stops at c_init00. What could be the reason?

The main change I did was to reduce the VICLK1 by changing the divisor - we needed to run SPI at 100 Khz which was not possible with VCLK1 at 100 MHz. I set the divisor of VCLK1 such that VCLK1 is about 11.35 MHz, generated the code, compiled and tried debugging. It was taking a long time to show the cursor at the program line so I pressed pause. The code was cycling at the memory parity check while loop. I thought it was taking too much time because of low VCLK1, stopped the project, went to Halcogen and changed VCLK1 to 100 MHz again to check. Again I could not debug.

I programmed another working work - still the same issue.

Changed processor board, programmed the working project, it worked. Programmed the new Halcogen project again, debug stopped at c_init. Changed back to working project, debug worked.

I have attached Halcogen project which hangs up the processor. The difference between this and the project which stopped the processor completely is that the VCLK1 was set to 11.35 MHz.

What could be the issue?

Can we use CCSV5 on TMS570 MDK?

kevin huang101715 — Wed, 19 Jun 2013 03:04:35 GMT

Hi:

I download the CCSV5 and install it.

It show a license requirement window.

I input the "TMDX570-Development-Kit.lic" that are under CCSV4 directory, but it show invalid lincense.

How can i get a new license for CCSV5?

TMS570LS - SCI Phantom Interrupt

Charles Johnston — Tue, 18 Jun 2013 17:41:00 GMT

Hello,

The sciLowLevelInterrupt() routine supplied with HALCoGen 3.04.00 has a case statement that switches on SCI Interrupt Vector Offset 1 (SCIINTVECT1). The default case is commented as a phantom interrupt. We are frequently getting this phantom interrupt with an offset of 0 which is reserved. The SCI Flags Register (SCIFLR) is showing the RXRDY bit is set, but the ISR does not process it due to the higher priority phantom interrupt.

1) What causes an SCI phantom interrupt?

2) We periodically disable SCI_RX_INT to directly access the queue. If this is done at the same time a byte is coming in, could this cause the offset register to be cleared?

Thanks, Charlie Johnston

RM46 - CLEARINT - Problem

Andy Kay — Thu, 13 Jun 2013 16:18:35 GMT

Hi,

we are using RM46 @80MHz and we have set up MPU with peripherals as DEVICE_NONSHAREABLE with HalCoGen.

Now, we have a problem:

- in some functions I want to disable the RTI compare interrupt
- then do some action
- and re-enable the RTI compare interrupt

Looks like this

// disable 1ms IRQ
rtiREG1->CLEARINT = RTI_COMP0_IRQ_BIT; // 'RTI_COMP0_IRQ_BIT' is defines as '0x01')

// Read flag (and reset, if elapsed)
if(T_timer.at_periodtimer[u8_timer_idx].u8_flag)        // This global VAR is also read and written in 1ms IRQ
{
   T_timer.at_periodtimer[u8_timer_idx].u8_flag = 0;
   u8_retval = 1;
}

// enable 1ms IRQ
rtiREG1->SETINT   = RTI_COMP0_IRQ_BIT;

In the case, that the '1ms IRQ' routine breaks normal programm execution
around the time, when I try to clear the enable flag (rtiREG1->CLEARINT = RTI_COMP0_IRQ_BIT, see above),
magic things happen:

The '1ms IRQ' is called twice!!!! (Directly after leaving the IRQ routine, it is called again!
(But it should not be called until another 1 millisecond has passed).

What I have tested:

- put one "NOP" after 'rtiREG1->CLEARINT = RTI_COMP0_IRQ_BIT;'
-> IRQ Routine is called twice -> ERROR!

- put 2 "NOP" after 'rtiREG1->CLEARINT = RTI_COMP0_IRQ_BIT;'
-> IRQ Routine is called only once -> works!!!

- switch Memorytype for peripherals to "STRONGLY ORDERED"
-> IRQ Routine is called only once -> works!!! (... with no "NOP"s at all...)

Do you have any explanation for this behavior?

Best regards,

Andy

Statup File

Megan Graham — Sat, 15 Jun 2013 18:20:58 GMT

I am having problems running projects. I am using CCS5.4.0 and HALCoGen 3.5.2; I have a TMS570LS3137 board using TI XDS100v2 USB Emulator. I can run the demos just fine. When I add my own project I get the following:

~ In the debug perspective connected to the target and see the following message in the console window: "CortexR4: GEL Output: Memory Map Setup for Flash @ Address 0x0"

~ When I pause the run I see in the Debug window:0x00000004 (no symbols are defined for 0x00000004)

~ In the Disassembly window it seems to be stuck at address 0x00000004 which has no instructions there (all FFFFF's)

It doesn't seem to run the startup generated from HalCoGen.

What did I miss?

Megan

Flash API 1.51 doesn't compile with --unaligned_access=off option even though --gcc option is ON

Pashan None — Tue, 18 Jun 2013 18:30:17 GMT

Hello Support,

We need to compile Flash API Library Header files using --unaligned_access = off option for Version 1.51.
Can you please let us know how to do that?
Because of ATTRIBUTE_PACKED as used within Types.h, TI Compiler is giving error.

Thank you.
Regards
Pashan

FlexRay line driver?

Massimo — Tue, 18 Jun 2013 08:37:06 GMT

Hi,

I want to connect 2 tms570LS2xx using FlexRay.

I cannot use a flexray transceiver, for several reasons. Which line driver can I use for the physical connection? An LVTTL buffer, or an optocoupler?

Thanks, best regards
Massimo

HET PULSEHI?

Jack Andrews — Tue, 18 Jun 2013 10:02:17 GMT

Hi,

Please could someone explain what HET action PULSEHI actually does and how it differs from SET? I can't seem to find any documentation for it.

Thanks,

Jack

TMS470 CCS release and debug mode

Ramkumar natarajan — Tue, 18 Jun 2013 03:26:25 GMT

Hi Forum members

i am using TMS470 in my design

The code is running fine when the .out file is compiled in debug mode and downloaded to device.

If we compile same code in release mode and download .out file, the code does not work properly in the microcontroller

HET Issue: Cannot stop pwm output, if duty cycle was set to 100%

Emmanuel Dhollande — Tue, 18 Jun 2013 07:11:34 GMT

Hello,

I am using the pwm generation on the TMS570 platform using the HET module. I generate the code using HAlcogen (version 03.03.01).

The pwm generation works so far, however if Ithe duty cycle was set before to 100% (pwmSetDuty()) , calling the method pwmstop from the generated het.c does not deactivate the output.

For any other pwm duty cycle, I can stop the pwm generation, and the output on my pin is low.

Should I explicitely set the pin to low, after having called the pwmStop method ?

Thanks an regards

Emmanuel

LIN Communication

ishan maniar — Tue, 18 Jun 2013 08:07:52 GMT

Hie,

I am using the TMS570 HDK, And I want to Transmit and Receive LIN messages, over a LIN bus.

Is there any code example for LIN communication, in a similar way there are example codes for CAN?

An example would really help.

Cheers, Ishan

Question about pinmux for 4 certain pins

Tom Major — Tue, 18 Jun 2013 11:46:00 GMT

Hello,

I am currently designing a board with a TMS5703137BZWTQQ1 and have to look at each pin for all my desired functions.

For these 4 pin functions, two ball grid pins are assigned (document SPNS162A –APRIL 2012–REVISED NOVEMBER 2012)

HET1_21: H4 J3
HET1_27: A9 B2
HET1_29: A3 C3
GIOB_2: F2 V10

Is this some kind of error or is this correct? How can one have the same pin function (like GIOB_2) on two different pins? E.g. how can one read one GIO B2 input from two different pins?

Would be great if someone from TI could clarify this.

Thanks,

Tom

tms570 bq76pl536 spi driver

Mehmet Karadeniz — Tue, 18 Jun 2013 12:27:58 GMT

hello ,

i started new project and need to communicate with bq76pl536 ic from tms570, is there any ready to use driver for this ic ?

i am run out of time that why need ready to use driver

thanks

Code Composer Studio 4 was not detected (Error message from Hercules Safety MCU Demos)

Nicholas Hall — Thu, 06 Jun 2013 21:04:32 GMT

Hi, I have just aqcuired a TMS570LS31xxUSB dev board and am keen to view some Code Composer Studio demos. However, when I try to do this I get the error message given in the title followed by a pop up box saying it is not installed on the system and asking me if I want to download it. I have seen this thread http://e2e.ti.com/support/microcontrollers/hercules/f/312/t/219081.aspx where the answers given for a different dev board were

1. You can open the Demo project from CCS under project menu -> Import existing CCS project. Assuming that the installation was in the default directory, set the search location to: C:\ti\Hercules\Hercules Safety MCU Demos\RM48x_target_sources\build.
You can build this project and flash it using 'run->load' under CCS debug view.

2. It is highly recommended that you update to CCSv5 and latest version of the HalcoGen (code creation tool) and the demo software.

3. At the minimum you need the CCS and the Hercules Demo software. That can be found at this link: http://www.ti.com/mcu/docs/mcuprodtoolsw.tsp?sectionId=95&tabId=2836&familyId=1931&toolTypeId=1

However, I can't find the appropriate folder, either in C:\Program Files (x86)\Texas Instruments\Hercules\Hercules Safety MCU Demos or using a system search, and I'm not sure how to download any software without a company, website, etc.

Could you advise me what to do to view these demos. Thanks.

Fixed point arithmetics TMS570LS0432

Vytautas Bau��a — Thu, 13 Jun 2013 10:32:16 GMT

Hello,

I would like to use a PID controller with fixed point arithmetics.

So far I tried using "Cortex-R4 CMSIS DSP Library", which isn't flexible at all. Description of functions is dim. And for my specific implementation q15_t type doesn't seem to provide sufficient variable range (-2 to 1.99...).

1)So, is IQmath (used for C28 family, "tidcs\c28") suitable for TMS570LS0432 microcontroller? Because this library has a whole different scale of support and for me it seems more comprehensible.

2)If yes, how can I get it running on my board with PID implementation.

3)I had a suggestion of using "motorware" library, could you point me how better or worse this library is, compared, to "tidcs" or "CMSIS".

HET problem

Ramkumar natarajan — Mon, 27 May 2013 13:00:28 GMT

HI forum members i have a problem with my PWM signal generation in TMS470. Below is the description of the problem In HET module, PWM Input capture is read through 'capgetsignal' function. While doing so the function returns dutycycle and period as Zero all the time. After adding the variable to watch, the watch values were observed as in screenshots. The watch data is available for both Input and Output. PWM outputs are working fine, the problem is with Input capture. attached screen shot in PDF regards Ram

Please provide a DEMO of Imprecise Abort Example Project for Hercules

Pashan None — Sun, 16 Jun 2013 17:43:29 GMT

Hello Support,

I tried the method as suggested by Jean-Marc in

http://e2e.ti.com/support/microcontrollers/hercules/f/312/p/200399/715786.aspx#715786

for generating Imprecise Abort [ATYPE=1] in IMPFASTS Register.

I am unable to create Imprecise Abort even though I tried setting up MPU for CRC Peripheral Memory to DEVICE Type as CPSR A-Bit as ZERO.

While accesing CRC Base Address + 0x210 using LDR Instruction, I still get Precise Abort instead of Imprecise Abort.

Can you please provide a complete DEMO project with Imprecise Abort for Hercules [TMS570LS3137 or TMS570LS0432 device will be fine]?

Thank you.
Regards
Pashan

FlexRay - redundancy

Massimo — Mon, 17 Jun 2013 15:50:32 GMT

Hi,

I'd like to connect 2 tms570LS20x with FlexRay, using both the available channels with a point to point topology.

The 2 channels are independent, and the redundancy must be handled by the application, am I correct?

Can there be any advantage from the reliability point of view in terms of safety if I "cross connect" SystemA-ChannelA with SystemB-ChannelB instead of connecting the 2 ChannelAs and the 2 ChannelBs together?

Thanks for your help, best regards
Massimo

Which IC Package for Hercules Part contains JTAG SRST Pin?

Pashan None — Sun, 16 Jun 2013 17:45:09 GMT

Hello Support,

I am looking for any Hercules Family Part which contains JTAG SRST Pin within it's IC Package.

Please let me know.
Thank you.
Regards
Pashan

Communiation over SCI

Nagendra Babu — Sat, 15 Jun 2013 05:05:40 GMT

Hi,

I am working on TMS470MF06607 and we having an issue with SCI port, i.e.

When we connect debugger to our hardware and send a command to then it responds for the same. But when we remove the debugger from the hardware it will not respond for any of the command.

Pls help us in resolving this.

Reg

Babu

DP83640 design

yong zhang2 — Fri, 14 Jun 2013 17:24:37 GMT

Hi:

It's also about the EMAC design problem about the TMS570LS3137 and the DP83640, if I use the MII mode only, is that ok to copy the TMS570 HDK design(the MII_RX_DV pull up)? Or just add a pull down resistor instead of pull up?

I notice that if the MII_RX_DV of the DP83640 is 0, the MII mode selected(DP83640 default is 0 because of the internal pull down ). But in the HDK design, the MII_RX_DV is pulled up, and still MII mode work, why is that? Is there any way to change the mode select?

Regards,

yong