怎么将PWM代码从dsPIC33EP512MU810移植到dsPIC33EP256MC506

您好，我已经在SPDIC33 EP512MU810 PWM工作精细探索16开发和我的定制板。但当我尝试端口toDSPIC33 EP256MC506相同的代码不工作不能产生PWM。我使用相同的8MHz振荡器。其他外围设备，如LED，开关，定时器工作良好。即使在代码中没有任何错误。请更新…如果任何人都有一些想法…编辑：我已经看到例子16-1：PWMX写保护寄存器解锁序列可能是这是失踪的FordSpEP3EP256MC506in矿山代码TS9



      以下为原文

    Hello,

I have worked on dsPIC33EP512MU810 PWM working Fine on  Explore 16 Development and my customized board.
But When I am trying to Port to dsPIC33EP256MC506 same code does Not worked Not able to generate PWM .
I am using Same 8MHz Oscillator . Other peripherals such as LEDs, Switches, timers are working Fine.
Even Not getting any error in Code..




// FGS
#pragma config GWRP = OFF // General Segment Write-Protect bit (General Segment may be written)
//#pragma config GSS = OFF // General Segment Code-Protect bit (General Segment Code protect is disabled)
//#pragma config GSSK = OFF // General Segment Key bits (General Segment Write Protection and Code Protection is Disabled)



// FOSCSEL
#pragma config FNOSC = PRI // Initial Oscillator Source Selection Bits (Primary Oscillator (XT, HS, EC) with PLL)
#pragma config IESO = ON // Two-speed Oscillator Start-up Enable bit (Start up device with FRC, then switch to user-selected oscillator source)



// FOSC
#pragma config POSCMD = HS // Primary Oscillator Mode Select bits (HS Crystal Oscillator Mode)
#pragma config OSCIOFNC = OFF // OSC2 Pin Function bit (OSC2 is clock output)
#pragma config IOL1WAY = OFF // Peripheral pin select configuration (Allow multiple reconfigurations)
#pragma config FCKSM = CSECMD // Clock Switching Mode bits (Both Clock switching and Fail-safe Clock Monitor are disabled)



// FWDT
#pragma config WDTPOST = PS32768 // Watchdog Timer Postscaler Bits (1:32,768)
#pragma config WDTPRE = PR128 // Watchdog Timer Prescaler bit (1:128)
#pragma config PLLKEN = ON // PLL Lock Wait Enable bit (Clock switch to PLL source will wait until the PLL lock signal is valid.)
#pragma config WINDIS = OFF // Watchdog Timer Window Enable bit (Watchdog Timer in Non-Window mode)
#pragma config FWDTEN = OFF // Watchdog Timer Enable bit (Watchdog timer enabled/disabled by user software)



// FPOR
//#pragma config FPWRT = PWR128 // Power-on Reset Timer Value Select bits (128ms)
//#pragma config BOREN = OFF // Brown-out Reset (BOR) Detection Enable bit (BOR is disabled)
#pragma config ALTI2C1 = OFF // Alternate I2C pins for I2C1 (SDA1/SCK1 pins are selected as the I/O pins for I2C1)
#pragma config ALTI2C2 = OFF // Alternate I2C pins for I2C2 (SDA2/SCK2 pins are selected as the I/O pins for I2C2)



// FICD
#pragma config ICS = PGD2 // ICD Communication Channel Select bits (Communicate on PGEC2 and PGED2)
//#pragma config RSTPRI = PF // Reset Target Vector Select bit (Device will obtain reset instruction from Primary flash)
#pragma config JTAGEN = OFF // JTAG Enable bit (JTAG is disabled)



// FAS
//#pragma config AWRP = OFF // Auxiliary Segment Write-protect bit (Auxiliary program memory is not write-protected)
//#pragma config APL = OFF // Auxiliary Segment Code-protect bit (Aux Flash Code protect is disabled)
//#pragma config APLK = OFF // Auxiliary Segment Key bits (Aux Flash Write Protection and Code Protection is Disabled)



#define Fosc 120000000.0



#define FOSC 120000000.0
#define FCY 60000000.0



#include



//PWM Mode of Operation. Choose only one.
#define MODE_COMPLEMENTARY
// #define MODE_REDUNDANT
// #define MODE_PUSHPULL
// #define MODE_TRUE_INDEPENDENT_PWM



//PWM Configuration
// #define USE_FIXED_PRIMARY_PERIOD //If uncommented, PWM uses Fixed SECONDARY PERIOD(STPER)
// #define VARIABLE_PHASE_FIXED_PERIOD //If uncommented, PWM uses PHASEx as PERIOD REGISTER with NO PHASE SHIFT
// #define INDEPENDENT_DUTYCYCLE //If uncommented, it uses MDC as DUTYCYCLE Register











#define CENTER_ALIGNED_MODE







#ifdef CENTER_ALIGNED_MODE
#define mPWM_PHASE1 (10000.0 * 2.0)
#define mPWM_PHASE2 (10000.0 * 2.0)
#define mPWM_PHASE3 (10000.0 * 2.0)
#define mPWM (10000.0 * 2.0)



#define mPDC1 10.0
#define mPDC2 10.0
#define mPDC3 10.0
//#else // If Edge Aligned Mode
#define PWM 20000.0
#define mMDC 70.0 //Duty Cycle for Fixed Frequence(PTPER))
#endif




volatile int ArrayCount=0,PWM_ARRAY[10];
void SystemInitialize(void);
void OSCInit(void);
void IOInit(void);
void HSPWMInit(void);



int main(void)
{
__delay_ms(10) ;
SystemInitialize();
while(1);
return 0;
}
void SystemInitialize(void)
{
OSCInit() ; //Initialize Oscillator
IOInit() ; //Initialize IO Ports
HSPWMInit() ; //Initialize High Speed PWM
}
void HSPWMInit(void)
{
PTCON2bits.PCLKDIV = 0; //PreScaler (Divided by 1)



//ALDTRx, DTRx = Fosc x (Desired Dead Time / PreScaler)
/* Set Dead Time Values */
DTR1 = DTR2 = DTR3 = 25;
ALTDTR1 = ALTDTR2 = ALTDTR3 = 25;



#ifdef MODE_COMPLEMENTARY
IOCON1bits.PMOD = IOCON2bits.PMOD = IOCON3bits.PMOD = 0b00;
#endif



#ifdef CENTER_ALIGNED_MODE



// Check HSPWM Referennce Maunal for that Page 12
PWMCON1bits.ITB = 1 ; // PHASEx/SPHASEx registers provide timebase period for this PWM generator
PWMCON2bits.ITB = 1 ; // PHASEx/SPHASEx registers provide timebase period for this PWM generator
PWMCON3bits.ITB = 1; // PHASEx/SPHASEx registers provide timebase period for this PWM generator

PWMCON1bits.CAM = 1 ; // PWM1 - Center Aligend Mode 1
PWMCON2bits.CAM = 1 ; // PWM2 - Center Aligend Mode 1
PWMCON3bits.CAM = 1 ; // PWM2 - Center Aligend Mode 1

PHASE1 = Fosc / mPWM_PHASE1;
PHASE2 = Fosc / mPWM_PHASE2;
PHASE3 = Fosc / mPWM_PHASE3;



#else // Egde Aligned MOode
PWMCON1bits.ITB = PWMCON2bits.ITB = PWMCON3bits.ITB = 0;
PHASE1 = 0;
PHASE2 = 0;
PHASE3 = 0;
//PWM = 20kHz
//PTPER,PHASEx,SPHASEx = Fosc / (PWM x PreScaler) =120Mhz / (20kHz x 1) = 6000
PTPER =Fosc / PWM;
#endif
// MDC,PDCx,SDCx = Fosc / (PWM x PreScaler) x Desired Duty Cycle
// We are using PDCx. Mandataory for Center Aligned Mode
PWMCON1bits.MDCS = PWMCON2bits.MDCS = PWMCON3bits.MDCS = 0; /* PDCx/SDCx provides duty cycle value */



PDC1 = Fosc / (mPWM_PHASE1) * mPDC1/100; // Set Duty Cycles
PDC2 = Fosc / (mPWM_PHASE2) * mPDC2/100; // Set Duty Cycles
PDC3 = Fosc / (mPWM_PHASE3) * mPDC3/100; // Set Duty Cycles

/////////// PDC3 = 5400;



IOCON1 |= 0xC000;
IOCON2 |= 0xC000;
IOCON3 |= 0xC000;



/* Configure Faults */
FCLCON1 = FCLCON2 = FCLCON3 = 0x0000;







/* 1:1 Prescaler */
PTCON2 = 0x0000;
//Trigger
TRIG1 = TRIG2 = TRIG3 = 1000; //3000;

TRGCON1bits.TRGDIV = 15;
TRGCON1bits.TRGSTRT = 15;

//PWMCON1bits.IUE = 1;
PWMCON1bits.TRGSTAT = 0;
//PWMCON1bits.TRGIEN = 1;
while(PWMCON1bits.TRGSTAT);
IEC5bits.PWM1IE = 1;
//INTCON2bits.GIE = 1;

/* Enable PWM Module */
//PTCON = 0x8000;
PTCONbits.PTEN = 1;
}
void OSCInit(void)
{
// Configure PLL prescaler, PLL postscaler, PLL divisor
// ((8Mhz / N1) x 60) / N2 = 120Mhz
// FOSC = 120Mhz
// Fcy = 120Mhz/2 = 60Mhz = 60MIPS

PLLFBD = 58; // M=60
CLKDIVbits.PLLPOST=0; // N2=2
CLKDIVbits.PLLPRE=0; // N1=2

// Initiate Clock Switch to Primary Oscillator with PLL (NOSC=0b011)
__builtin_write_OSCCONH(0x03);
__builtin_write_OSCCONL(OSCCON | 0x01);

// Wait for Clock switch to occur
while (OSCCONbits.COSC!= 0b011);

// Wait for PLL to lock
while (OSCCONbits.LOCK!= 1);
}






Please Update .. If any body have some idea..

Edited : I have seen EXAMPLE 16-1:   PWMx WRITE-PROTECTED REGISTER UNLOCK SEQUENCE May  be this is missing for
dsPIC33EP256MC506 in Mine Code

--
TS9

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