RTOS/AM3358: Confirm the way to enable the DMTimer of from 3 to 7

Kaka

Part Number: AM3358
Other Parts Discussed in Thread: SYSBIOS,

Tool/software: TI-RTOS

Hi TI Experts,

Please provide your answer for my question by end of tomorrow in Japan time if possible.
[Question]
Would you please teach me the way to enable all DMTIMERs?

[Enviroments]
H/W: AM335x Start Kit
S/W: bios_6_73_00_12

[Background]
According to customer, the No.0 and No.2 DMTIMER was enabled when used the StarterKit GEL file. Acutually, when they create the No.3 DMTIMER on their application, it failed with exception error. So, they would like to know the way to enable the all DMTIMERs on their application code.

If you have any questions, please let me know.
Best regards.

Kaka

over 6 years ago

0 Kaka over 6 years ago

Guru 24520 points

Part Number: AM3358

Tool/software: TI-RTOS

Hi TI Experts,

Please let me confirm the following question. If possible, would you give us your comments by end of tomorrow in Japan time?

[Question]
When customer created the Timer with using DMTimer 2 like below codes, it failed with the return value of "NULL".
What do you think the cause of this problem? Of course, if you find any lack of settings, please let me know. Also, would you teach the way to explore the cause in such a case?

* Cfg configuration
var Timer = xdc.useModule('ti.sysbios.hal.Timer');
var DMTimer = xdc.useModule('ti.sysbios.timers.dmtimer.Timer');

*Application code
Timer_Params_init( &aTimerParams );
aTimerParams.arg = 1; // DMTIMER3 ID=1
aTimerParams.extFreq.lo = 20000000;//（20MHz）
aTimerParams.period = 0xFFFFFFFF;
aTimerParams.periodType = ITimer_PeriodType_COUNTS;
aTimerParams.runMode = ITimer_RunMode_CONTINUOUS;
aTimerParams.startMode = ITimer_StartMode_USER;
aTimerParams.intNum = -1;
aTimerHandle = Timer_create(0, NULL、&timerParams, &aErrBlk）

[Environments]
Hardware: AM3358 Starter Kit
Software: bios_6_73_00_12

If you have any questions, please let me know.
Best regards.
Kaka

0 Rahul Prabhu over 6 years ago

TI__Guru** 116170 points

Kaka,

It is unclear if your question is about GEL files or RTOS configuration to use DMtimer.

GEL configuration:

Refer to the post here. To use other timers, you need to configure the PRCM for the timer

https://e2e.ti.com/support/legacy_forums/embedded/tirtos/f/355/t/303860

https://e2e.ti.com/support/legacy_forums/embedded/tirtos/f/355/t/360858

RTOS configuration

In RTOS each DMTimer has a Timer ID associated with it. If you select the clock or timer module and configure the timer ID you can use that DMTimer. The timer mapping is located in the BIOS package at location

bios_6_73_01_01\packages\ti\sysbios\timers\dmtimer\doc-files

I have attached the file for your reference

Fullscreen TimerTables.html Download

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<!--
   - run generated javascript code that creates Timer HTML tables parsed from
   - Timer.xs
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<script Language="Javascript" type="text/javascript" src="./TimerTables.js"></script>

Setting timer ID can be done as shown in the E2E thread below:

http://processors.wiki.ti.com/index.php/Processor_SDK_RTOS:_TI_RTOS_Tips_And_Tricks#How_to_set_input_frequency_in_SYSBIOS_configuration_and_change_timer_used_by_clock_module

Regards,

Rahul

0 Rahul Prabhu over 6 years ago in reply to Rahul Prabhu

TI__Guru** 116170 points

The complete solution with with the GEL update to enable PRCM is available in the E2E thread below:

e2e.ti.com/.../657370

0 Kaka over 6 years ago in reply to Rahul Prabhu

Guru 24520 points

Hi Rahul,

Thank you for your response.
Customer would like to know the case of enabling the DMTIMER on RTOS.(not GEL file)
I would like to know how should I do the process to enable the Timers on RTOS like the following GEL file description.
***************
#define CM_PER (0x44e00000)
#define CM_DPLL (0x44e00500)
#define CLKSEL_TIMER4_CLK (CM_DPLL + 0x0C)
#define CM_PER_TIMER4_CLKCTRL (CM_PER + 0x88)
----
WR_MEM_32(CM_PER_TIMER4_CLKCTRL, 0x2);
WR_MEM_32(CLKSEL_TIMER4_CLK, 0x2);
-----
***************

Would you please guide it? Does they only follow the following guide?
processors.wiki.ti.com/.../Processor_SDK_RTOS:_TI_RTOS_Tips_And_Tricks

For example, used the DMTimer 4

var Timer = xdc.useModule('ti.sysbios.timers.dmtimer.Timer');
Clock= xdc.useModule('ti.sysbios.knl.Clock');
Clock.timerId = 2;

If you have any questions, please let me know.
Best regard.
Kaka

0 Kaka over 6 years ago in reply to Rahul Prabhu

Guru 24520 points

Hi Rahul,

Thank you for your information.
I confirmed the GEL solution to enable the DMTimer. As I said previous post, I would like to know the solution/method to enable the DMTimer on the RTOS.

Best regards.
kaka

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RTOS/AM3358: Confirm the way to enable the DMTimer of from 3 to 7