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USBH - USB_CM3

Hi,
i want to use USB host controller on LPC1778 with USB_CM3.lib and usbh_ohci_lpc177x_8x driver. The board is custom and there are no ISP1301. In driver - usbh_ohci_lpc177x_8x i saw functions for working with I2C(ISP1301). When i calling "usbh_init(0)" and "usbh_engine(0)" I2C functions are too calling. Is it possible to modify driver to work without ISP1301 as host only?

Thank's in advance !

Parents

0 Peter K over 12 years ago in reply to Peter K

/*------------------------- usbh_ohci_hw_delay_ms ------------------------------
 *
 *  Delay execution (in milliseconds)
 *  Calibration is done if global variable calDelay is 0
 *
 *  Parameter:  ms:         Number of milliseconds to delay execution for
 *  Return:
 *----------------------------------------------------------------------------*/

void usbh_ohci_hw_delay_ms (U32 ms) {
  U32 cnt = 0, vals = 0, vale = 0;

start:
  if (!calDelay) {                      /* If not calibrated                  */
    cnt = 1000;
    if (!(SysTick->CTRL & SysTick_CTRL_ENABLE_Msk)) {
                                        /* If SysTick timer not running       */
      vals = 0xFFFFFF;
      SysTick->LOAD  = 0xFFFFFF;
      SysTick->VAL   = 0xFFFFFF;
      SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
                       SysTick_CTRL_ENABLE_Msk;
    } else {
      vals = SysTick->VAL;              /* Timer start value                  */
    }
  } else {
    cnt = ms * calDelay;
  }

  while (cnt--);

  if (!calDelay) {                      /* If not calibrated                  */
    vale = SysTick->VAL;                /* Timer end value                    */
    if (vale >= vals)                   /* If timer reloaded                  */
      vals += SysTick->LOAD;
    SystemCoreClockUpdate();            /* Update SystemCoreClock variable    */
    calDelay = SystemCoreClock / (vals - vale);   /* Calibrated value         */
    if (vals == 0xFFFFFF)               /* Stop timer if we started it        */
      SysTick->CTRL  = 0;
    goto start;
  }
}



/*------------------------- usbh_ohci_hw_pins_cfg ------------------------------
 *
 *  Configurate or unconfigurate pins used by the USB Host.
 *
 *  Parameter:  on:         __TRUE = configurate, __FALSE = unconfigurate
 *  Return:                 __TRUE = Ok, __FALSE = error
 *----------------------------------------------------------------------------*/

BOOL usbh_ohci_hw_pins_config (BOOL on) {

  if (on) {
    /* Set pin functions                                                      */
    LPC_IOCON->P0_29 = 1;               /* USB_D+1                            */
    LPC_IOCON->P0_30 = 1;               /* USB_D-1                            */
//    LPC_IOCON->P0_31 = 1;             /* USB_D+2                            */
                                        /* USB_D-2 is dedicated pin           */

    LPC_IOCON->P1_18 = 1;               /* USB_UP_LED1                        */
                LPC_IOCON->P1_19 = 2;               /* !USB_PPWR1                         */
                LPC_IOCON->P1_22 = 2;               /* USB_PWRD1                          */
    LPC_IOCON->P1_27 = 2;               /* !USB_OVRCR1                        */

    LPC_IOCON->P0_12 = 1 | (1 << 7);    /* !USB_PPWR2                         */
    LPC_IOCON->P0_13 = 1 | (1 << 7);    /* USB_UP_LED2                        */
    LPC_IOCON->P0_14 = 1;               /* !USB_HSTEN2                        */
    LPC_IOCON->P1_30 = 1 | (1 << 7);    /* USB_PWRD2                          */
    LPC_IOCON->P1_31 = 1 | (1 << 7);    /* !USB_OVRCR2                        */
  } else {
    /* Reset pin functions                                                    */
    LPC_IOCON->P0_12 = 0xD0;
    LPC_IOCON->P0_13 = 0xD0;
    LPC_IOCON->P0_14 = 0x30;
    LPC_IOCON->P1_30 = 0xD0;
    LPC_IOCON->P1_31 = 0xD0;

    LPC_IOCON->P1_18 = 0x30;
                LPC_IOCON->P1_19 = 0x30;
          LPC_IOCON->P1_22 = 0x30;
    LPC_IOCON->P1_27 = 0x30;

    LPC_IOCON->P0_29 = 0;
    LPC_IOCON->P0_30 = 0;
//    LPC_IOCON->P0_31 = 0;
  }

  return (__TRUE);
}


/*------------------------- usbh_ohci_hw_init ----------------------------------
 *
 *  Initialize or uninitialize the USB Host Controller.
 *
 *  Parameter:  on:         __TRUE = initialize, __FALSE = uninitialize
 *  Return:                 __TRUE = Ok, __FALSE = error
 *----------------------------------------------------------------------------*/

BOOL usbh_ohci_hw_init (BOOL on) {
  S32 tout;

  if (on) {
    usbh_ohci_hw_delay_ms (10);         /* Calibrate delay                    */

    /* Initialize memory pool for data                                        */
    if (!usbh_mem_init(0, (U32 *)&usbh_ohci_mpool, sizeof(usbh_ohci_mpool)))
      return (__FALSE);

    LPC_SC->PCONP       |=  (1UL << 31);/* Enable USB interface power/clock   */
    LPC_USB->OTGClkCtrl |=  0x19;       /* Enable Host, OTG, AHB mster clk    */

    tout = 10100;
    while (!((LPC_USB->OTGClkSt & 0x19) == 0x19)) {   /* Wait clock enable    */
      if (tout-- <= 100) {
        if (tout == 0)
          return (__FALSE);
        usbh_ohci_hw_delay_ms (10);                   /* Wait ~10 ms          */
      }
    }

    LPC_USB -> StCtrl   |=  0x03;          // 11: U1 = host, U2 = device

    NVIC_SetPriority (USB_IRQn, 0);     /* Set USB interrupt highest priority */
  } else {
    LPC_USB->StCtrl     &= ~0x03;       /* Deselect port function             */

    LPC_USB->OTGClkCtrl &= ~0x1F;       /* Disable Host,I2C,OTG, AHB mster clk*/

    for (tout = 100; ; tout--) {
      if ((LPC_USB->OTGClkSt & 0x1F) == 0)/* Wait for clocks disabled         */
        break;
      if (!tout)
        return (__FALSE);
    }

    LPC_SC->PCONP       &= ~(1UL << 31);/* Disable USB interface power/clock  */
  }

  return (__TRUE);
}

When i call usbh_init(0); return 1-Success, but when i call usbh_hid_status(0,0);
return 0 - HID device not connected.Where i am wrong?

Reply

0 Peter K over 12 years ago in reply to Peter K

/*------------------------- usbh_ohci_hw_delay_ms ------------------------------
 *
 *  Delay execution (in milliseconds)
 *  Calibration is done if global variable calDelay is 0
 *
 *  Parameter:  ms:         Number of milliseconds to delay execution for
 *  Return:
 *----------------------------------------------------------------------------*/

void usbh_ohci_hw_delay_ms (U32 ms) {
  U32 cnt = 0, vals = 0, vale = 0;

start:
  if (!calDelay) {                      /* If not calibrated                  */
    cnt = 1000;
    if (!(SysTick->CTRL & SysTick_CTRL_ENABLE_Msk)) {
                                        /* If SysTick timer not running       */
      vals = 0xFFFFFF;
      SysTick->LOAD  = 0xFFFFFF;
      SysTick->VAL   = 0xFFFFFF;
      SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
                       SysTick_CTRL_ENABLE_Msk;
    } else {
      vals = SysTick->VAL;              /* Timer start value                  */
    }
  } else {
    cnt = ms * calDelay;
  }

  while (cnt--);

  if (!calDelay) {                      /* If not calibrated                  */
    vale = SysTick->VAL;                /* Timer end value                    */
    if (vale >= vals)                   /* If timer reloaded                  */
      vals += SysTick->LOAD;
    SystemCoreClockUpdate();            /* Update SystemCoreClock variable    */
    calDelay = SystemCoreClock / (vals - vale);   /* Calibrated value         */
    if (vals == 0xFFFFFF)               /* Stop timer if we started it        */
      SysTick->CTRL  = 0;
    goto start;
  }
}



/*------------------------- usbh_ohci_hw_pins_cfg ------------------------------
 *
 *  Configurate or unconfigurate pins used by the USB Host.
 *
 *  Parameter:  on:         __TRUE = configurate, __FALSE = unconfigurate
 *  Return:                 __TRUE = Ok, __FALSE = error
 *----------------------------------------------------------------------------*/

BOOL usbh_ohci_hw_pins_config (BOOL on) {

  if (on) {
    /* Set pin functions                                                      */
    LPC_IOCON->P0_29 = 1;               /* USB_D+1                            */
    LPC_IOCON->P0_30 = 1;               /* USB_D-1                            */
//    LPC_IOCON->P0_31 = 1;             /* USB_D+2                            */
                                        /* USB_D-2 is dedicated pin           */

    LPC_IOCON->P1_18 = 1;               /* USB_UP_LED1                        */
                LPC_IOCON->P1_19 = 2;               /* !USB_PPWR1                         */
                LPC_IOCON->P1_22 = 2;               /* USB_PWRD1                          */
    LPC_IOCON->P1_27 = 2;               /* !USB_OVRCR1                        */

    LPC_IOCON->P0_12 = 1 | (1 << 7);    /* !USB_PPWR2                         */
    LPC_IOCON->P0_13 = 1 | (1 << 7);    /* USB_UP_LED2                        */
    LPC_IOCON->P0_14 = 1;               /* !USB_HSTEN2                        */
    LPC_IOCON->P1_30 = 1 | (1 << 7);    /* USB_PWRD2                          */
    LPC_IOCON->P1_31 = 1 | (1 << 7);    /* !USB_OVRCR2                        */
  } else {
    /* Reset pin functions                                                    */
    LPC_IOCON->P0_12 = 0xD0;
    LPC_IOCON->P0_13 = 0xD0;
    LPC_IOCON->P0_14 = 0x30;
    LPC_IOCON->P1_30 = 0xD0;
    LPC_IOCON->P1_31 = 0xD0;

    LPC_IOCON->P1_18 = 0x30;
                LPC_IOCON->P1_19 = 0x30;
          LPC_IOCON->P1_22 = 0x30;
    LPC_IOCON->P1_27 = 0x30;

    LPC_IOCON->P0_29 = 0;
    LPC_IOCON->P0_30 = 0;
//    LPC_IOCON->P0_31 = 0;
  }

  return (__TRUE);
}


/*------------------------- usbh_ohci_hw_init ----------------------------------
 *
 *  Initialize or uninitialize the USB Host Controller.
 *
 *  Parameter:  on:         __TRUE = initialize, __FALSE = uninitialize
 *  Return:                 __TRUE = Ok, __FALSE = error
 *----------------------------------------------------------------------------*/

BOOL usbh_ohci_hw_init (BOOL on) {
  S32 tout;

  if (on) {
    usbh_ohci_hw_delay_ms (10);         /* Calibrate delay                    */

    /* Initialize memory pool for data                                        */
    if (!usbh_mem_init(0, (U32 *)&usbh_ohci_mpool, sizeof(usbh_ohci_mpool)))
      return (__FALSE);

    LPC_SC->PCONP       |=  (1UL << 31);/* Enable USB interface power/clock   */
    LPC_USB->OTGClkCtrl |=  0x19;       /* Enable Host, OTG, AHB mster clk    */

    tout = 10100;
    while (!((LPC_USB->OTGClkSt & 0x19) == 0x19)) {   /* Wait clock enable    */
      if (tout-- <= 100) {
        if (tout == 0)
          return (__FALSE);
        usbh_ohci_hw_delay_ms (10);                   /* Wait ~10 ms          */
      }
    }

    LPC_USB -> StCtrl   |=  0x03;          // 11: U1 = host, U2 = device

    NVIC_SetPriority (USB_IRQn, 0);     /* Set USB interrupt highest priority */
  } else {
    LPC_USB->StCtrl     &= ~0x03;       /* Deselect port function             */

    LPC_USB->OTGClkCtrl &= ~0x1F;       /* Disable Host,I2C,OTG, AHB mster clk*/

    for (tout = 100; ; tout--) {
      if ((LPC_USB->OTGClkSt & 0x1F) == 0)/* Wait for clocks disabled         */
        break;
      if (!tout)
        return (__FALSE);
    }

    LPC_SC->PCONP       &= ~(1UL << 31);/* Disable USB interface power/clock  */
  }

  return (__TRUE);
}

When i call usbh_init(0); return 1-Success, but when i call usbh_hid_status(0,0);
return 0 - HID device not connected.Where i am wrong?

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