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thanks Leonard! it is working now. i am so happy:)) i have wasted 1 week for this. (i have to more pay attention PE and manuals of DSP) isa --- help56800 <> wrote: > Apparently there is a bug in Processor Expert > generated code. The > command: setReg( PWMA_PMCTL, 0x0003) sets LDOK bit > and enables PWM > count generator. However, according to the manual, > to set LDOK bit > user must read this bit first, then write logic 1 to > it. So in your > case LDOK bit is never set, and your PWM duty cycle > and value > register are not actually written. To fix this > problem, insert getReg > (PWMA_PMCTL) code right before setReg( PWMA_PMCTL, > 0x0003). > > I want to add two things: > > Once you modify Processor Expert generated code (by > adding getReg > () ), make sure to tell PE to preserve your changes. > Go to > Edit/Settings menu (Settings located right under > Preferences menu). > Select "Processor Expert"/"Project Options", and > check "Preserve > User Changes" check box. > > One more note: Processor Expert has several > interfaces for > peripherals. There is PESL interface, which will > produce much more > optimized code for you. To use PESL, simply click on > Processor > Expert tab in your project, and double click on X > next PESL (to > enable it). Once PESL is enabled, expand it to PWMA > folder, which > will contain all available commands for PWM. At this > point you can > drag and drop desired commands into your code. For > example, your > application in PESL will look like this: > > PESL(PWMA, PWM_SET_MODULO, 0x02EE); > > PESL(PWMA, PWM_SET_DEADTIME, 1); > > PESL(PWMA, PWM_WRITE_VALUE_REG_0, 0x02BC); > PESL(PWMA, PWM_WRITE_VALUE_REG_1, 0x0258); > PESL(PWMA, PWM_WRITE_VALUE_REG_2, 0x01F4); > PESL(PWMA, PWM_WRITE_VALUE_REG_3, 0x0190); > PESL(PWMA, PWM_WRITE_VALUE_REG_4, 0x012C); > PESL(PWMA, PWM_WRITE_VALUE_REG_5, 0x0064); > PESL(PWMA, PWM_WRITE_DISABLE_MAPPING_REG1, 0); > PESL(PWMA, PWM_WRITE_DISABLE_MAPPING_REG2, 0); > > PESL(PWMA, PWM_SET_ALIGNMENT, PWM_ALIGN_EDGE); > > PESL(PWMA, PWM_SET_INDEPENDENT_MODE, PWM_CHANNEL_01 > | > PWM_CHANNEL_23 | PWM_CHANNEL_45); > > PESL(PWMA, PWM_DEVICE, PWM_ENABLE); > > PESL(PWMA, PWM_LOAD_OK, NULL); > PESL(PWMA, PWM_OUTPUT_PAD, PWM_ENABLE); > > Leonard > > --- In , isa "g" > <olemp_isa@y...> > wrote: > > hi! i am trying to learn pwm module of 56f8323 in > my > > 56f8300 demo board. i have used pwm init. bean. > here > > the code which generated by PE: > > > > setReg( PWMA_PMFCTL, 0x0000); > > > > setReg( PWMA_PWMCM, 0x02EE); > > > > setReg( PWMA_PWMVAL0, 0x02BC); > > > > setReg( PWMA_PWMVAL1, 0x0258); > > > > setReg( PWMA_PWMVAL2, 0x01F4); > > > > setReg( PWMA_PWMVAL3, 0x0190); > > > > setReg( PWMA_PWMVAL4, 0x012C); > > > > setReg( PWMA_PWMVAL5, 0x0064); > > > > setReg( PWMA_PMDISMAP1, 0x0000); > > > > setReg( PWMA_PMDISMAP2, 0x0000); > > > > setReg( PWMA_PMDEADTM, 0x0000); > > > > setReg( PWMA_PMCCR, 0x0000); > > > > setReg( PWMA_PMCFG, 0x100E); > > > > setReg( PWMA_PMOUT, 0x8000); > > > > setReg( PWMA_PMCTL, 0x0003); > > > > setReg( PWMA_PMICCR, 0x0000); > > > > edge aligned,80khz,all independent, all faults > > disabled, PAD_EN and PWMEN bits "1", all > polarities > > positive. > > > > when i downloaded the code into my DSP all leds > which > > connected to pwm outputs shows zero(there is no > > light)...... i have controlled the values of the > > registers according to peripheral user manual. it > > looks okey.... what is the problem??is there any > > idea??? > > > > > > isa > > > > > > > > > > __________________________________ > > > __________________________________ |