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usb asynchronous

usbtom usbtom

How do I set the usb audio code up for usb asynchronous transfers.

Do I just have to change bmAttributes

USB_ENDPOINT_TYPE_ISOCHRONOUS,

to

USB_ENDPOINT_SYNC_ASYNCHRONOUS

or is it more complexed than that.

Parents
  • 0 in reply to Chinzei Tsuneo

    >- Run another timer on PCLK in free run

    Is this what you mean by free run, just leaving it blank? What is this (VPB_CLOCK) you talk of.

    void TIMER1_IRQHandler(void)
{

LPC_TIM1->IR = 1;                         /* Clear Interrupt Flag */




LPC_SC->PCONP |= 1 << 2;     // Power on Timer'

  LPC_TIM1->MR0 = pclk/DATA_FREQ - 1;   /* TC0 Match Value 0 */
  LPC_TIM1->MCR = 3;                                    /* TCO Interrupt and Reset on MR0 */
  LPC_TIM1->TCR = 1;                                    /* TC0 Enable */
  NVIC_EnableIRQ(TIMER0_IRQn);


   }

Reply
  • 0 in reply to Chinzei Tsuneo

    >- Run another timer on PCLK in free run

    Is this what you mean by free run, just leaving it blank? What is this (VPB_CLOCK) you talk of.

    void TIMER1_IRQHandler(void)
{

LPC_TIM1->IR = 1;                         /* Clear Interrupt Flag */




LPC_SC->PCONP |= 1 << 2;     // Power on Timer'

  LPC_TIM1->MR0 = pclk/DATA_FREQ - 1;   /* TC0 Match Value 0 */
  LPC_TIM1->MCR = 3;                                    /* TCO Interrupt and Reset on MR0 */
  LPC_TIM1->TCR = 1;                                    /* TC0 Enable */
  NVIC_EnableIRQ(TIMER0_IRQn);


   }

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