Deadtime in lpc1768

gaviprakash — Mon, 10 Oct 2016 07:30:08 GMT

Hi,

Iam generating MCPWM with deadtime in LPC1768.but iam not able to generate dead time I read datasheet but it is not generating can anyone please help.below is my code

main()

{

SystemInit();                    //Clock and PLL configuration

LPC_SC->PCONP |= (1<<17); /* Power ON Timer0,1 */
LPC_SC->PCLKSEL1 |=(1<<30)|(1<<31);
LPC_PINCON->PINSEL3 |= (1<<12)|(1<<6);
LPC_PINCON->PINMODE3 |= (1<<6)|(1<<7)|(1<<12)|(1<<13);
    LPC_GPIO1->FIODIR |= (1<<19)|(1<<22);
   LPC_MCPWM->MCCCP = (1<<0)|(1<<1)|(1<<2)|(1<<3);
   LPC_MCPWM->MCCON_SET |=(1<<3)|(1<<31)|(1<<29);//|(1<<1)|(1<<9) ;
LPC_MCPWM->MCTIM0 = 0;
    LPC_MCPWM->MCPER0 = 1000;
LPC_MCPWM->MCPW0 = 600;
LPC_MCPWM->MCDEADTIME = 0x100 ;
for(i=0;i<10000;i++)
for(j=0;j<1000;j++);
LPC_MCPWM->MCCON_SET |= (1<<0);
     while(1)
     {

     }
}

Thanks

Re: Deadtime in lpc1768

Carlos_Mendoza — Wed, 26 Oct 2016 22:06:38 GMT

Hi gavi,

Is it working correctly without the dead time insertion?

I have reviewed the code snippet above and it seems to be correctly configured. You could also try using the LPC175x_6x CMSIS-Compliant Standard Peripheral Firmware Driver as reference for your application, it comes with a MCPWM driver:

LPC175x_6x CMSIS-Compliant Standard Peripheral Firmware Driver Library (Keil, IAR, GNU) | www.LPCware.com

Hope it helps!

Best Regards,
Carlos Mendoza
Technical Support Engineer

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Deadtime in lpc1768

Re: Deadtime in lpc1768