rxpu99
Joined: 23 Jun 2014
Posts: 10
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| dspic30-33 Power supply PWM phase setting |
 Posted: Mon Jun 23, 2014 12:56 am |
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I am evaluating the ccs compiler , I investigated the compiler command reference, but i can not find how to setup the phase shift between 2 PWMs.
Following is the code how I setup the phase shift of power supply pwm with mplabx built in compiler:
| Code: |
#include<30F2020.h>
#FUSES NOWDT //No Watch Dog Timer
#FUSES NOWRTB //Boot block not write protected
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOWRT //Program memory not write protected
#FUSES FRC_PLL //Internal Fast RC oscillator with PLL
#FUSES NOCKSFSM //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES FRANGE_HIGH //Frequency Range for FRC 14.55MHz
#FUSES NOOSCIO //OSC2 is clock output
#FUSES NOPR //Primary oscillaotr disabled
#FUSES NOWINDIS //Watch Dog Timer in Window mode
#FUSES WPRES128 //Watch Dog Timer PreScalar 1:128
#FUSES WPOSTS16 //Watch Dog Timer PostScalar 1:32768
#FUSES PUT128 //Power On Reset Timer value 128ms
#FUSES NODEBUG //No Debug mode for ICD
#FUSES ICSP1 //ICD uses PGC1/PGD1 pins
#use delay(clock=58200000) // =14.55MHZ *4 (interne rc oscillator)
#word PTCON = getenv("SFR:PTCON")
#word PTPER = getenv("SFR:PTPER")
#word MDC = getenv("SFR:MDC")
#word IOCON1 = getenv("SFR:IOCON1")
#word IOCON2 = getenv("SFR:IOCON2")
#word DTR1 = getenv("SFR:DTR1")
#word DTR2 = getenv("SFR:DTR2")
#word PWMCON1 = getenv("SFR:PWMCON1")
#word PWMCON2 = getenv("SFR:PWMCON2")
#word PDC1 = getenv("SFR:PDC1")
#word PDC2 = getenv("SFR:PDC2")
#word ALTDTR1 = getenv("SFR:ALTDTR1")
#word ALTDTR2 = getenv("SFR:ALTDTR2")
#word Phase1 = getenv("SFR:PHASE1")
#word Phase2 = getenv("SFR:PHASE2")
#bit PTEN = getenv("BIT:PTEN")
void main()
{
PTCON = 0x0400; // Enable immideate period updates
PTPER = 0x8894; // Period timed (Desired period / 1.05ns)
MDC = 0x444B; // Master duty cycle (50%) in this case
Phase1 = 0x2225; // Phase shift pwm channel 1
Phase2 = 0x2225; // Phase shift pwm channel 2
PWMCON1 = 0x0180; // Use Master duty cycle, Enable phase1 function
PWMCON2 = 0x0180; // Use Master duty cycle, Enable phase1 function
IOCON1 = 0xC400; // PENH and PENL controlled by PWM module
IOCON1 = 0xC400; // PENH and PENL controlled by PWM module
DTR1 = 0x0040; // Set dead time to 4*64*1.05ns ??
DTR2 = 0x0040; // Set dead time to 4*64*1.05ns ??
//ALTDTR1 = 0x0040;
//ALTDTR2 = 0x0040;
PTEN = 1; // Enable PWM module
while (true)
{
}
}
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I think ccs compiler is easier to use and has better and basic grouped fixed fuctions. I found everything except the phase shift function. I can not setup Phase1 and Phase2 as shown in code in the ccs compiler.
thank you for your input. |
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