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Hi. to understand working of the quad timer i have written this little software: //code begins(count up with ip bus clock -60mhz-) unsigned int cnt1; void main(void) { /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/ PE_low_level_init(); /*** End of Processor Expert internal initialization. ***/ /* Write your code here */ PESL(TMRA0, QT_WRITE_CONTROL_REG, 0b0011000000000000); PESL(TMRA0, QT_WRITE_COMPARE_REG1, 0xFFFF); while(1) { PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); } } //code ends my aim: clear timer read timer clear timer read timer clear timer read timer clear timer read timer i am reading cnt1 register by putting breakpoints. But in every reading it has different value. i have just tried and read these values respectively: 21354-28481-38797-56163.....logically i have to read same numbers from the timer. Because i am clearing it before every reading. And i have to read small numbers because i am immediatly reading timer after clearing. What is my mistake???? Regards.................. __________________________________ |
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What is wrong in this quad timer???
Started by ●August 18, 2004
Reply by ●August 18, 20042004-08-18
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What processor are using? I have executed this code on 56F8323 demo board and it worked fine: every read of count register gave me value of 3. Leonard --- In , isa "g" <olemp_isa@y...> wrote: > Hi. to understand working of the quad timer i have > written this little software: > > //code begins(count up with ip bus clock -60mhz-) > unsigned int cnt1; > > void main(void) > { > /*** Processor Expert internal initialization. DON'T > REMOVE THIS CODE!!! ***/ > PE_low_level_init(); > /*** End of Processor Expert internal > initialization. ***/ > > /* Write your code here */ > > PESL(TMRA0, QT_WRITE_CONTROL_REG, 0b0011000000000000); > PESL(TMRA0, QT_WRITE_COMPARE_REG1, 0xFFFF); > > > while(1) > { > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > } > > } > //code ends > > my aim: > > clear timer > read timer > clear timer > read timer > clear timer > read timer > clear timer > read timer > > i am reading cnt1 register by putting breakpoints. But > in every reading it has different value. i have just > tried and read these values respectively: > 21354-28481-38797-56163.....logically i have to read > same numbers from the timer. Because i am clearing it > before every reading. And i have to read small numbers > because i am immediatly reading timer after clearing. > What is my mistake???? > > Regards.................. > > > __________________________________ > |
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Reply by ●August 18, 20042004-08-18
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thanks.i am using 56f8300 demo board(the board which has e-field sensor with 56f8323).i am trying this code for a while and it dosn't work properly.......... i didn't use any pe bean. i have used pe to initalize cpu. all code is this. if it works in your board it should work also in my board:))it is odd. --- help56800 <> wrote: > What processor are using? I have executed this code > on 56F8323 demo > board and it worked fine: every read of count > register gave me value > of 3. > > Leonard > > --- In , isa "g" > <olemp_isa@y...> > wrote: > > Hi. to understand working of the quad timer i have > > written this little software: > > > > //code begins(count up with ip bus clock -60mhz-) > > unsigned int cnt1; > > > > void main(void) > > { > > /*** Processor Expert internal initialization. > DON'T > > REMOVE THIS CODE!!! ***/ > > PE_low_level_init(); > > /*** End of Processor Expert internal > > initialization. ***/ > > > > /* Write your code here */ > > > > > > > > PESL(TMRA0, QT_WRITE_CONTROL_REG, > 0b0011000000000000); > > PESL(TMRA0, QT_WRITE_COMPARE_REG1, 0xFFFF); > > > > > > > > > > while(1) > > { > > > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > > > PESL(TMRA0, QT_WRITE_COUNTER_REG, 0); > > cnt1 = PESL(TMRA0, QT_READ_COUNTER_REG, ...); > > > > } > > > > } > > //code ends > > > > my aim: > > > > clear timer > > read timer > > clear timer > > read timer > > clear timer > > read timer > > clear timer > > read timer > > > > i am reading cnt1 register by putting breakpoints. > But > > in every reading it has different value. i have > just > > tried and read these values respectively: > > 21354-28481-38797-56163.....logically i have to > read > > same numbers from the timer. Because i am clearing > it > > before every reading. And i have to read small > numbers > > because i am immediatly reading timer after > clearing. > > What is my mistake???? > > > > Regards.................. > > > > > > > > > > __________________________________ > __________________________________ |
