/*******************************************************************************
* Function Name: USBUART_Resume
********************************************************************************
*
* Summary:
* This function enables the USBFS block after power down mode.
*
* Parameters:
* None.
*
* Return:
* None.
*
* Global variables:
* USBUART_backup - checked.
*
* Reentrant:
* No.
*
*******************************************************************************/
void USBUART_Resume(void)
{
uint8 enableInterrupts;
enableInterrupts = CyEnterCriticalSection();
if(USBUART_backup.enableState != 0u)
{
#if(USBUART_DP_ISR_REMOVE == 0u)
CyIntDisable(USBUART_DP_INTC_VECT_NUM);
#endif /* USBUART_DP_ISR_REMOVE */
/* Enable USB block */
USBUART_PM_ACT_CFG_REG |= USBUART_PM_ACT_EN_FSUSB;
/* Enable USB block for Standby Power Mode */
USBUART_PM_STBY_CFG_REG |= USBUART_PM_STBY_EN_FSUSB;
/* Enable core clock */
USBUART_USB_CLK_EN_REG |= USBUART_USB_CLK_ENABLE;
/* Enable the USBIO reference by setting PM.USB_CR0.fsusbio_ref_en.*/
USBUART_PM_USB_CR0_REG |= USBUART_PM_USB_CR0_REF_EN;
/* The reference will be available ~40us after power restored */
CyDelayUs(40u);
/* Return VRegulator*/
USBUART_CR1_REG |= USBUART_backup.mode;
CyDelayUs(0u); /*~50ns delay */
/* Enable USBIO */
USBUART_PM_USB_CR0_REG |= USBUART_PM_USB_CR0_PD_N;
CyDelayUs(2u);
/* Set the USBIO pull-up enable */
USBUART_PM_USB_CR0_REG |= USBUART_PM_USB_CR0_PD_PULLUP_N;
/* Re-init Arbiter configuration for DMA transfers */
#if(USBUART_EP_MM != USBUART__EP_MANUAL)
/* Usb arb interrupt enable */
USBUART_ARB_INT_EN_REG = USBUART_ARB_INT_MASK;
#if(USBUART_EP_MM == USBUART__EP_DMAMANUAL)
USBUART_ARB_CFG_REG = USBUART_ARB_CFG_MANUAL_DMA;
#endif /* USBUART_EP_MM == USBUART__EP_DMAMANUAL */
#if(USBUART_EP_MM == USBUART__EP_DMAAUTO)
/*Set cfg cmplt this rises DMA request when the full configuration is done */
USBUART_ARB_CFG_REG = USBUART_ARB_CFG_AUTO_DMA | USBUART_ARB_CFG_AUTO_MEM;
#endif /* USBUART_EP_MM == USBUART__EP_DMAAUTO */
#endif /* USBUART_EP_MM != USBUART__EP_MANUAL */
/* STALL_IN_OUT */
CY_SET_REG8(USBUART_EP0_CR_PTR, USBUART_MODE_STALL_IN_OUT);
/* Enable the SIE with a last address */
USBUART_CR0_REG |= USBUART_CR0_ENABLE;
CyDelayCycles(1u);
/* Finally, Enable d+ pullup and select iomode to USB mode*/
CY_SET_REG8(USBUART_USBIO_CR1_PTR, USBUART_USBIO_CR1_USBPUEN);
/* Restore USB register settings */
USBUART_RestoreConfig();
}
CyExitCriticalSection(enableInterrupts);
}
/*******************************************************************************
* Function Name: USBUART_Resume
****************************************************************************//**
*
* This function prepares the USBFS component for active mode operation after
* exit low power mode. It restores the component active mode configuration such
* as device address assigned previously by the host, endpoints buffer and disables
* interrupt on Dp pin.
* 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 after
* exiting Sleep.
*
* *Note* To resume communication with the host, the data endpoints must be
* managed: the OUT endpoints must be enabled and IN endpoints must be loaded
* with data. For DMA with Automatic Buffer Management, all endpoints buffers
* must be initialized again before making them available to the host.
*
*
* \globalvars
* USBUART_backup - checked.
*
* \reentrant
* No.
*
*******************************************************************************/
void USBUART_Resume(void)
{
uint8 enableInterrupts;
enableInterrupts = CyEnterCriticalSection();
if (0u != USBUART_backup.enableState)
{
#if (USBUART_DP_ISR_ACTIVE)
CyIntDisable(USBUART_DP_INTC_VECT_NUM);
#endif /* (USBUART_DP_ISR_ACTIVE) */
#if (CY_PSOC4)
/* Enable clock to USB IP. */
USBUART_USB_CLK_EN_REG |= USBUART_USB_CLK_CSR_CLK_EN;
/* Restore arbiter configuration for DMA transfers. */
#if (USBUART_EP_MANAGEMENT_DMA)
#if (USBUART_ARB_ISR_ACTIVE)
/* Enable ARB EP interrupt sources. */
USBUART_ARB_INT_EN_REG = USBUART_DEFAULT_ARB_INT_EN;
#endif /* (USBUART_EP_MANAGEMENT_DMA) */
/* Configure arbiter for Manual or Auto DMA operation and clear
* configuration completion.
*/
USBUART_ARB_CFG_REG = USBUART_DEFAULT_ARB_CFG;
#endif /* (USBUART_EP_MANAGEMENT_DMA) */
/* Restore level (hi, lo, med) for each interrupt source. */
USBUART_INTR_LVL_SEL_REG = USBUART_DEFAULT_INTR_LVL_SEL;
/* Store SIE interrupt sources. */
USBUART_INTR_SIE_MASK_REG = (uint32) USBUART_backup.intrSeiMask;
/* Set EP0.CR: ACK Setup, NAK IN/OUT. */
USBUART_EP0_CR_REG = USBUART_MODE_NAK_IN_OUT;
/* Restore data EP1-8 configuration. */
USBUART_RestoreConfig();
/* Restore state of USB regulator and wait until it supples stable power. */
USBUART_CR1_REG |= USBUART_backup.mode;
CyDelayUs(USBUART_WAIT_VREF_STABILITY);
/* Suspend exit sequence. */
USBUART_POWER_CTRL_REG &= (uint32) ~USBUART_POWER_CTRL_SUSPEND;
CyDelayUs(USBUART_WAIT_SUSPEND_DEL_DISABLE);
USBUART_POWER_CTRL_REG &= (uint32) ~USBUART_POWER_CTRL_SUSPEND_DEL;
#else
/* Set power active and standby mode templates: enable USB block. */
USBUART_PM_ACT_CFG_REG |= USBUART_PM_ACT_EN_FSUSB;
USBUART_PM_STBY_CFG_REG |= USBUART_PM_STBY_EN_FSUSB;
/* Enable core clock. */
USBUART_USB_CLK_EN_REG |= USBUART_USB_CLK_ENABLE;
/* Enable the USBIO reference by setting PM.USB_CR0.fsusbio_ref_en.*/
USBUART_PM_USB_CR0_REG |= USBUART_PM_USB_CR0_REF_EN;
/* The reference is available ~40us after power restored. */
CyDelayUs(USBUART_WAIT_VREF_RESTORE);
/* Restore state of USB regulator and wait until it supples stable power. */
USBUART_CR1_REG |= USBUART_backup.mode;
CyDelayUs(USBUART_WAIT_VREF_STABILITY); /*~50ns delay. */
/* Enable USBIO. */
USBUART_PM_USB_CR0_REG |= USBUART_PM_USB_CR0_PD_N;
CyDelayUs(USBUART_WAIT_PD_PULLUP_N_ENABLE);
/* Set the USBIO pull-up enable. */
USBUART_PM_USB_CR0_REG |= USBUART_PM_USB_CR0_PD_PULLUP_N;
/* Restore arbiter configuration for DMA transfers. */
#if (USBUART_EP_MANAGEMENT_DMA)
#if (USBUART_ARB_ISR_ACTIVE)
/* Enable ARB EP interrupt sources. */
USBUART_ARB_INT_EN_REG = USBUART_DEFAULT_ARB_INT_EN;
#endif /* (USBUART_EP_MANAGEMENT_DMA) */
/* Configure arbiter for Manual or Auto DMA operation and clear
* configuration completion.
*/
USBUART_ARB_CFG_REG = USBUART_DEFAULT_ARB_CFG;
#endif /* (USBUART_EP_MANAGEMENT_DMA) */
/* Set EP0.CR: ACK Setup, STALL IN/OUT. */
USBUART_EP0_CR_REG = USBUART_MODE_STALL_IN_OUT;
/* Enable the USB IP to respond to USB traffic with the last address. */
USBUART_CR0_REG |= USBUART_CR0_ENABLE;
CyDelayCycles(USBUART_WAIT_CR0_REG_STABILITY);
/* Enable D+ pull-up and keep USB control on IO. */
USBUART_USBIO_CR1_REG = USBUART_USBIO_CR1_USBPUEN;
/* Restore data EP1-8 configuration. */
USBUART_RestoreConfig();
#endif /* (CY_PSOC4) */
}
CyExitCriticalSection(enableInterrupts);
}
