RTOS/TMS320C6678: Timer and Clock Tick period Problem

saman mazrooie

Part Number: TMS320C6678
Other Parts Discussed in Thread: SYSBIOS

Tool/software: TI-RTOS

hi,

I use evm6678, in XGCONF , i set Tick period 100us and i use Clock module and set the period to 1000, but my ISR function interrupt every 1000 ms !!

it must be 100ms ??

i use timer and set the period in 100000 micro second and it interrupt every 1000 ms !! it must be 100ms ?? (have a 10 factor)

over 6 years ago

0 Yordan Kovachev over 6 years ago

TI__Guru**** 161600 points

Hi,

Which Processor SDK RTOS version are you using? Can you share how you set up the tick period?
Have you checked the Timer training for tips on this one:
www.ti.com/.../timers_clocks.mp4

Best Regards,
Yordan

0 saman mazrooie over 6 years ago in reply to Yordan Kovachev

Intellectual 640 points

hi,
i use mcsdk_2_01_02_06 and pdk_c6678_1_1_2_6 .
i modify image processing master demo program in pdk. in this example at the start boot EVM_init call and it initialize pll and other , is there any problem in EVM_ini?

0 Yordan Kovachev over 6 years ago in reply to saman mazrooie

TI__Guru**** 161600 points

Hi,

i modify image processing master demo program in pdk.

Can you share how you modify the demo?
In general there shouldn't be any problem with EVM_ini.

Best Regards,
Yordan

0 lding over 6 years ago in reply to Yordan Kovachev

TI__Guru* 95265 points

Hi,

Attaches is a timer example using SYSBIOS. One timer tick is 1ms. The C6678 runs at 1GHz with GEL initialization. I used TSCL to measure the timestamp when the ISR is entered.

When I used a period of 5 ticks, that is 5ms, the TSCL gap is 5,000,000 cycles. I don't see any problem. You can use this as the base for your timer ISR code.

====

k0Fxn = 940

System time in clk0Fxn = 945

System time in clk0Fxn = 950

System time in clk0Fxn = 955

System time in clk0Fxn = 960

System time in clk0Fxn = 965

System time in clk0Fxn = 970

System time in clk0Fxn = 975

System time in clk0Fxn = 980

System time in clk0Fxn = 985

System time in clk0Fxn = 990

System time in clk0Fxn = 995

System time in clk0Fxn = 1000

System time in clk0Fxn = 1005

System time in clk0Fxn = 1010

System time in clk0Fxn = 1015

System time in clk0Fxn = 1020

System time in clk0Fxn = 1025

System time in clk0Fxn = 1030

System time in clk0Fxn = 1035

System time in clk0Fxn = 1040

System time in clk0Fxn = 1045

System time in clk0Fxn = 1050

System time in clk0Fxn = 1055

System time in clk0Fxn = 1060

System time in clk0Fxn = 1065

System time in clk0Fxn = 1070

System time in clk0Fxn = 1075

System time in clk0Fxn = 1080

System time in clk0Fxn = 1085

System time in clk0Fxn = 1090

System time in clk0Fxn = 1095

System time in clk0Fxn = 1100

System time in clk1Fxn = 1100

Calling BIOS_exit() from clk1Fxn

clock_TMS320C6678.zip

Regards., Eric

0 lding over 6 years ago in reply to lding

TI__Guru* 95265 points

clock.cfgUpdate: I saw you want to change the tickPeriod from 1000 us (default) to 100 us, I did this in XGCCONF

I had below in my .cfg file (attached):

Clock.tickPeriod = 100;

I now saw the TSCL interval is 500,000 cycles, this is expected.

Regards, Eric

0 saman mazrooie over 6 years ago in reply to lding

Intellectual 640 points

thank you for reply;

I check my program again and call you.

0 saman mazrooie over 6 years ago in reply to saman mazrooie

Intellectual 640 points

hi,

I find out my problem.

when i call Global_Default_Setup script before running my program, my problem solved.

i forget call Global_Default_Setup !!

thanks.

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RTOS/TMS320C6678: Timer and Clock Tick period Problem