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RTOS/TMS320C6678: Timer and Clock Tick period Problem

saman mazrooie
Intellectual 640 points
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)

  • 0
    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 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 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 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 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 in reply to lding
    Intellectual 640 points

    thank you for reply;

    I check my program again and call you.

  • 0 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.