F28335 plus TIMER1
in [Matlab]
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From: Rubén on 10 Jun 2010 08:50 I need the same. I need to schedule de timer interrupts in the f28335. Is this posible? Thanks Ruben Galvez "Pawel " <blaszczy(a)student.agh.edu.pl> wrote in message <hafj9e$3jj$1(a)fred.mathworks.com>... > Hello! > I would like to use in my application Timer1 with configurable parameters (timer period etc). However - I can't find any block which works with timer and interrupts from it. Hardware Interrupt doesen't work with timer and I don't know when I can configure it. In C2831x DSP Chip support we have Timer block and Hardware Interrupt co-operate with timer - can I find similar block for F28335 chip? Is it avaiable in Matlab R2008b? > > Best Regards, > Pawel Blaszczyk
From: Philip Chu on 11 Jun 2010 16:06 F28335 does not have a timer block to work with HWI block. As to user Timer 1, CPU-timer1 is enabled together with XINT13. Though there is nowhere to use it through our HW interrupt block, user may try using Timer 1 interrupt by changing the generated code as below: Put following lines into the main(): ====================================================== // E.g., configure the timer 1 the period to be 1 second ConfigCpuTimer(&CpuTimer1, 150, 1000000); // Reset interrupt counters: CpuTimer1.InterruptCount = 0; EALLOW; // This is needed to write to EALLOW protected registers PieVectTable.XINT13 = &cpu_timer1_isr; EDIS; // This is needed to disable write to EALLOW protected registers IER |= M_INT13; ========================================================== And also define its own ISR cpu_timer1_isr below. And, extern Interrupt 13 cannot be used for other purpose at the same moment interrupt void cpu_timer1_isr(void); You may follow the source file: example_2833xCPUTimer.c provided by TI to change these lines accordingly and see if the Timer1 works. Thanks, Philip "Rubén " <rubenga88(a)gmail.com> wrote in message news:huqn2d$efc$1(a)fred.mathworks.com... >I need the same. I need to schedule de timer interrupts in the f28335. > Is this posible? > > Thanks > > Ruben Galvez > "Pawel " <blaszczy(a)student.agh.edu.pl> wrote in message > <hafj9e$3jj$1(a)fred.mathworks.com>... >> Hello! >> I would like to use in my application Timer1 with configurable parameters >> (timer period etc). However - I can't find any block which works with >> timer and interrupts from it. Hardware Interrupt doesen't work with timer >> and I don't know when I can configure it. In C2831x DSP Chip support we >> have Timer block and Hardware Interrupt co-operate with timer - can I >> find similar block for F28335 chip? Is it avaiable in Matlab R2008b? >> >> Best Regards, >> Pawel Blaszczyk >
From: Philip Chu on 11 Jun 2010 16:33
Add the missing line of StartCpuTimer1(); It should be as below: ====================================================== // E.g., configure the timer 1 the period to be 1 second ConfigCpuTimer(&CpuTimer1, 150, 1000000); // Start the timer StartCpuTimer1(); // Reset interrupt counters: CpuTimer1.InterruptCount = 0; EALLOW; // This is needed to write to EALLOW protected registers PieVectTable.XINT13 = &cpu_timer1_isr; EDIS; // This is needed to disable write to EALLOW protected registers IER |= M_INT13; > ========================================================== "Philip Chu" <pchu(a)mathworks.com> wrote in message news:huu50b$afi$1(a)fred.mathworks.com... > > F28335 does not have a timer block to work with HWI block. > > As to user Timer 1, CPU-timer1 is enabled together with XINT13. Though > there > is nowhere to use it through our HW interrupt block, user may try using > Timer 1 interrupt > by changing the generated code as below: > > > > Put following lines into the main(): > > ====================================================== > // E.g., configure the timer 1 the period to be 1 second > ConfigCpuTimer(&CpuTimer1, 150, 1000000); > > > // Reset interrupt counters: > CpuTimer1.InterruptCount = 0; > > EALLOW; // This is needed to write to EALLOW protected registers > > PieVectTable.XINT13 = &cpu_timer1_isr; > > EDIS; // This is needed to disable write to EALLOW protected registers > > IER |= M_INT13; > > ========================================================== > > > > And also define its own ISR cpu_timer1_isr below. And, extern Interrupt 13 > cannot be used for other purpose at the same moment > > interrupt void cpu_timer1_isr(void); > > > You may follow the source file: example_2833xCPUTimer.c provided by TI to > change these lines accordingly and see if the Timer1 works. > > > Thanks, > > Philip > > "Rubén " <rubenga88(a)gmail.com> wrote in message > news:huqn2d$efc$1(a)fred.mathworks.com... >>I need the same. I need to schedule de timer interrupts in the f28335. >> Is this posible? >> >> Thanks >> >> Ruben Galvez >> "Pawel " <blaszczy(a)student.agh.edu.pl> wrote in message >> <hafj9e$3jj$1(a)fred.mathworks.com>... >>> Hello! >>> I would like to use in my application Timer1 with configurable >>> parameters (timer period etc). However - I can't find any block which >>> works with timer and interrupts from it. Hardware Interrupt doesen't >>> work with timer and I don't know when I can configure it. In C2831x DSP >>> Chip support we have Timer block and Hardware Interrupt co-operate with >>> timer - can I find similar block for F28335 chip? Is it avaiable in >>> Matlab R2008b? >>> >>> Best Regards, >>> Pawel Blaszczyk >> > > |