/*******************************************************************************
* Function Name: USBFS_1_Stop
********************************************************************************
*
* Summary:
* This function shuts down the USB function including to release
* the D+ Pullup and disabling the SIE.
*
* Parameters:
* None.
*
* Return:
* None.
*
* Global variables:
* USBFS_1_configuration: Contains current configuration number
* which is set by the Host using SET_CONFIGURATION request.
* Initialized to zero in this API.
* USBFS_1_deviceAddress: Contains current device address. This
* variable is initialized to zero in this API. Host starts to communicate
* to device with address 0 and then set it to whatever value using
* SET_ADDRESS request.
* USBFS_1_deviceStatus: initialized to 0.
* This is two bit variable which contain power status in first bit
* (DEVICE_STATUS_BUS_POWERED or DEVICE_STATUS_SELF_POWERED) and remote
* wakeup status (DEVICE_STATUS_REMOTE_WAKEUP) in second bit.
* USBFS_1_configurationChanged: This variable is set to one after
* SET_CONFIGURATION request and cleared in this function.
* USBFS_1_intiVar variable is set to zero
*
*******************************************************************************/
void USBFS_1_Stop(void)
{
#if(USBFS_1_EP_MM != USBFS_1__EP_MANUAL)
USBFS_1_Stop_DMA(USBFS_1_MAX_EP); /* Stop all DMAs */
#endif /* End USBFS_1_EP_MM != USBFS_1__EP_MANUAL */
/* Disable the SIE */
USBFS_1_CR0_REG &= (uint8)(~USBFS_1_CR0_ENABLE);
/* Disable the d+ pullup */
USBFS_1_USBIO_CR1_REG &= (uint8)(~USBFS_1_USBIO_CR1_USBPUEN);
/* Disable USB in ACT PM */
USBFS_1_PM_ACT_CFG_REG &= (uint8)(~USBFS_1_PM_ACT_EN_FSUSB);
/* Disable USB block for Standby Power Mode */
USBFS_1_PM_STBY_CFG_REG &= (uint8)(~USBFS_1_PM_STBY_EN_FSUSB);
/* Disable the reset and EP interrupts */
CyIntDisable(USBFS_1_BUS_RESET_VECT_NUM);
CyIntDisable(USBFS_1_EP_0_VECT_NUM);
#if(USBFS_1_EP1_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_1_VECT_NUM);
#endif /* End USBFS_1_EP1_ISR_REMOVE */
#if(USBFS_1_EP2_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_2_VECT_NUM);
#endif /* End USBFS_1_EP2_ISR_REMOVE */
#if(USBFS_1_EP3_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_3_VECT_NUM);
#endif /* End USBFS_1_EP3_ISR_REMOVE */
#if(USBFS_1_EP4_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_4_VECT_NUM);
#endif /* End USBFS_1_EP4_ISR_REMOVE */
#if(USBFS_1_EP5_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_5_VECT_NUM);
#endif /* End USBFS_1_EP5_ISR_REMOVE */
#if(USBFS_1_EP6_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_6_VECT_NUM);
#endif /* End USBFS_1_EP6_ISR_REMOVE */
#if(USBFS_1_EP7_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_7_VECT_NUM);
#endif /* End USBFS_1_EP7_ISR_REMOVE */
#if(USBFS_1_EP8_ISR_REMOVE == 0u)
CyIntDisable(USBFS_1_EP_8_VECT_NUM);
#endif /* End USBFS_1_EP8_ISR_REMOVE */
/* Clear all of the component data */
USBFS_1_configuration = 0u;
USBFS_1_interfaceNumber = 0u;
USBFS_1_configurationChanged = 0u;
USBFS_1_deviceAddress = 0u;
USBFS_1_deviceStatus = 0u;
USBFS_1_initVar = 0u;
}
/*******************************************************************************
* Function Name: USBFS_1_Suspend
****************************************************************************//**
*
* This function prepares the USBFS component to enter low power mode. The
* interrupt on falling edge on Dp pin is configured to wakeup device when the
* host drives resume condition. The pull-up is enabled on the Dp line while
* device is in low power mode. The supported low power modes are Deep Sleep
* (PSoC 4200L) and Sleep (PSoC 3/ PSoC 5LP).
*
* *Note* For PSoC 4200L devices, this function should not be called before
* entering Sleep.
*
* *Note* After enter low power mode, the data which is left in the IN or OUT
* endpoint buffers is not restored after wakeup and lost. Therefore it should
* be stored in the SRAM for OUT endpoint or read by the host for IN endpoint
* before enter low power mode.
*
* \globalvars
* USBFS_1_backup.enable: modified.
*
* \reentrant
* No.
*
*******************************************************************************/
void USBFS_1_Suspend(void)
{
uint8 enableInterrupts;
enableInterrupts = CyEnterCriticalSection();
if (0u != (USBFS_1_CR0_REG & USBFS_1_CR0_ENABLE))
{
/* USB block is enabled. */
USBFS_1_backup.enableState = 1u;
#if (USBFS_1_EP_MANAGEMENT_DMA)
USBFS_1_Stop_DMA(USBFS_1_MAX_EP);
#endif /* (USBFS_1_EP_MANAGEMENT_DMA) */
#if (CY_PSOC4)
/* Suspend enter sequence. */
USBFS_1_POWER_CTRL_REG |= (USBFS_1_POWER_CTRL_SUSPEND |
USBFS_1_POWER_CTRL_SUSPEND_DEL);
/* Store state of USB regulator and disable it. */
USBFS_1_backup.mode = (uint8) (USBFS_1_CR1_REG & USBFS_1_CR1_REG_ENABLE);
USBFS_1_CR1_REG &= (uint32) ~USBFS_1_CR1_REG_ENABLE;
/* Store SIE interrupt sources. Valid bits are 0 - 4. */
USBFS_1_backup.intrSeiMask = (uint8) USBFS_1_INTR_SIE_MASK_REG;
#else
/* Ensure USB transmit enable is low (USB_USBIO_CR0.ten). - Manual Transmission - Disabled. */
USBFS_1_USBIO_CR0_REG &= (uint8) ~USBFS_1_USBIO_CR0_TEN;
CyDelayUs(USBFS_1_WAIT_REG_STABILITY_50NS); /*~50ns delay. */
/* Disable the USBIO by asserting PM.USB_CR0.fsusbio_pd_n(Inverted) and pd_pullup_hv(Inverted) high. */
USBFS_1_PM_USB_CR0_REG &= (uint8) ~(USBFS_1_PM_USB_CR0_PD_N |
USBFS_1_PM_USB_CR0_PD_PULLUP_N);
/* Disable the SIE. */
USBFS_1_CR0_REG &= (uint8) ~USBFS_1_CR0_ENABLE;
CyDelayUs(USBFS_1_WAIT_REG_STABILITY_50NS); /* ~50ns delay. */
/* Store mode and disable VRegulator. */
USBFS_1_backup.mode = (uint8) (USBFS_1_CR1_REG & USBFS_1_CR1_REG_ENABLE);
USBFS_1_CR1_REG &= (uint8) ~USBFS_1_CR1_REG_ENABLE;
CyDelayUs(USBFS_1_WAIT_REG_STABILITY_1US); /* min 0.5us delay required. */
/* Disable the USBIO reference by setting PM.USB_CR0.fsusbio_ref_en.*/
USBFS_1_PM_USB_CR0_REG &= (uint8) ~USBFS_1_PM_USB_CR0_REF_EN;
/* Switch DP and DM terminals to GPIO mode and disconnect 1.5k pull-up. */
USBFS_1_USBIO_CR1_REG |= USBFS_1_USBIO_CR1_IOMODE;
/* Disable USBFS block. */
/* Clear power active and standby mode templates: disable USB block. */
USBFS_1_PM_ACT_CFG_REG &= (uint8) ~USBFS_1_PM_ACT_EN_FSUSB;
USBFS_1_PM_STBY_CFG_REG &= (uint8) ~USBFS_1_PM_STBY_EN_FSUSB;
CyDelayUs(USBFS_1_WAIT_REG_STABILITY_1US); /* min 0.5us delay required. */
#endif /* (CY_PSOC4) */
}
else
{
USBFS_1_backup.enableState = 0u;
}
CyExitCriticalSection(enableInterrupts);
#if (USBFS_1_DP_ISR_ACTIVE)
/* Clear active mode Dp interrupt source history. */
(void) USBFS_1_Dp_ClearInterrupt();
CyIntClearPending(USBFS_1_DP_INTC_VECT_NUM);
CyIntEnable (USBFS_1_DP_INTC_VECT_NUM);
#endif /* (USBFS_1_DP_ISR_ACTIVE). */
}
