st7lite9

[foby_01192]

Posted on December 05, 2002 at 21:28

st7lite9

[foby_01192]

Posted on December 03, 2002 at 21:04

Hi

I have problems with the timer interrupt.(AT TIMER Overflow interrupt) I am using indart-st7flite0 for st7lite09B. I want to ouput as port ''A'' about Temp(var). and generate 10ms time interrupt. ref. After execute instruction ''rim'' , not operate program. I don't understand why isn't operation.

[simonharrison9]

Posted on December 04, 2002 at 06:07

Hi,

Could you supply the code? as text here or attachment? Simon Anglia Internal Apps Support

[foby_01192]

Posted on December 04, 2002 at 06:54

st7/

INTEL #INCLUDE ''ST72FLT0.INC'' INTEL ; intel format WORDS ; segment byte at 80-BF 'ram0' BYTES .TEMP DS.B 1 ; temp Register WORDS segment 'rom' ; rom area main CALL ram_clr ; ram clear CALL timer_init CLR TEMP RIM port_ LD A, #0Fh LD PADDR,A ; configures port A[0..4] as output LD PAOR, A LD A, TEMP LD X, #0ffH CP X, TEMP JRNE port_ret LD A, #00H port_ret LD PADR, A ; writes this value on port A JP port_ timer_init LD A, #12h ; count clock :Fcpu LD ATCSR,A ; OVFIE : Overflow Interrupt Enable LD A, #0F0h LD ATRL,A LD A, #0fh LD ATRH,A LD A, #00h LD CNTRH,A LD A, #00h LD CNTRL,A RET ;*************************************** ; Clear RAM (80H - BFH) ;*************************************** ram_clr LD X, #80H ; 84H-BFH LD Y, #40H ; 60 Bytes ram_clr2 LD A, #00H loop1 LD (X), A INC X DEC Y JRNE loop1 RET delay LD Y, #200 d_loop2 LD X,#0FFH d_loop1 DEC X JRNE d_loop1 DEC Y JRNE d_loop2 RET timer_cap_rtn INC TEMP iret segment 'vectit' DC.W 0 ; FFE0-FFE1h(Not Used) DC.W 0 ; FFE2-FFE3h(SPI Peripheral interrupts) DC.W 0 ; FFE4-FFE5h(LITE TIMER RTC interrupts) DC.W 0 ; FFE6-FFE7h(LITE TIMER input Capture interrupt) DC.W timer_cap_rtn ; FFE8-FFE9h(AT TIMER Overflow interrupt) DC.W 0 ; FFEA-FFEBh(AT TIMER Output Compare interrupt) DC.W 0 ; FFEC-FFEDh(AVD interrupt) DC.W 0 ; FFEE-FFEFh(Not Used) DC.W 0 ; FFF0-FFF1h(Not Used) DC.W 0 ; FFF2-FFF3h(External interrupt 3) DC.W 0 ; FFF4-FFF5h(External interrupt 2) DC.W 0 ; FFF6-FFF7h(External interrupt 1) DC.W 0 ; FFF8-FFF9h(External interrupt 0) DC.W 0 ; FFFA-FFFBh DC.W 0 ; FFFC-FFFDh(Software interrupt) DC.W main ; FFFE-FFFFh(Reset) end

[simonharrison9]

Posted on December 05, 2002 at 09:05

Hi,

A few points: 1. in the timer setup, it may be worth LD A, ATCSR this will clear any pending interrupt. 2. in the interrupt routine LD A, ATCSR must be used to clear the interrupt flag 3. Although i can not see it said in the data, I would load the ATR H first then L, as normal. writing to CNTRH and L is pointless, these are read only The ATR value is loaded to the CNTR at each overflow, an interrupt is also generated. One other minor point, you have not loaded the RC calibration value from memory to the RC calibration register. Your flite will be operating around 6.5MHz regards, Simon ANGLIA Internal Apps Support

[foby_01192]

Posted on December 05, 2002 at 21:28

hi

thanks your support. As insert ''LD A,ATCSR'' in interrupt routine, Solve problem.