332 lines
9.5 KiB
C
332 lines
9.5 KiB
C
|
/*!
|
||
|
|
\file usbd_int.c
|
||
|
|
\brief USB device power interrupt routines
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright (C) 2017 GigaDevice
|
||
|
|
|
||
|
|
2017-02-10, V1.0.0, firmware for GD32F30x
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "usbd_int.h"
|
||
|
|
|
||
|
|
extern uint32_t g_interrupt_mask;
|
||
|
|
extern __IO uint8_t g_suspend_enabled;
|
||
|
|
extern __IO uint8_t g_remote_wakeup_on;
|
||
|
|
extern __IO uint8_t g_ESOF_count;
|
||
|
|
|
||
|
|
#ifdef LPM_ENABLED
|
||
|
|
__IO uint32_t L1_remote_wakeup = 0U;
|
||
|
|
__IO uint32_t L1_resume = 0U;
|
||
|
|
__IO uint32_t besl = 0U;
|
||
|
|
#endif /* LPM_ENABLED */
|
||
|
|
|
||
|
|
static uint8_t usbd_intf_lpst (usbd_core_handle_struct *pudev);
|
||
|
|
static uint8_t usbd_intf_sof (usbd_core_handle_struct *pudev);
|
||
|
|
static uint8_t usbd_intf_esof (usbd_core_handle_struct *pudev);
|
||
|
|
static uint8_t usbd_intf_reset (usbd_core_handle_struct *pudev);
|
||
|
|
static uint8_t usbd_intf_suspend (usbd_core_handle_struct *pudev);
|
||
|
|
static uint8_t usbd_intf_wakeup (usbd_core_handle_struct *pudev);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief USB interrupt events service routine
|
||
|
|
\param[in] none
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
void usbd_isr (void)
|
||
|
|
{
|
||
|
|
__IO uint16_t interrupt_flag = 0U;
|
||
|
|
__IO uint16_t ctlr = 0U;
|
||
|
|
|
||
|
|
interrupt_flag = USBD_REG_GET(USBD_INTF);
|
||
|
|
|
||
|
|
if (g_interrupt_mask & INTF_STIF & interrupt_flag) {
|
||
|
|
/* the endpoint successful transfer interrupt service */
|
||
|
|
usbd_intf_lpst(&usb_device_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (g_interrupt_mask & INTF_WKUPIF & interrupt_flag) {
|
||
|
|
/* clear wakeup interrupt flag in INTF */
|
||
|
|
USBD_REG_SET(USBD_INTF, (uint16_t)CLR_WKUPIF);
|
||
|
|
|
||
|
|
/* USB wakeup interrupt handle */
|
||
|
|
usbd_intf_wakeup(&usb_device_dev);
|
||
|
|
|
||
|
|
#ifdef LPM_ENABLED
|
||
|
|
/* clear L1 remote wakeup flag */
|
||
|
|
L1_remote_wakeup = 0;
|
||
|
|
#endif /* LPM_ENABLED */
|
||
|
|
}
|
||
|
|
|
||
|
|
if (g_interrupt_mask & INTF_SPSIF & interrupt_flag) {
|
||
|
|
if(!(USBD_REG_GET(USBD_CTL) & CTL_RSREQ)) {
|
||
|
|
/* process library core layer suspend routine*/
|
||
|
|
usbd_intf_suspend(&usb_device_dev);
|
||
|
|
|
||
|
|
/* clear of suspend interrupt flag bit must be done after setting of CTLR_SETSPS */
|
||
|
|
USBD_REG_SET(USBD_INTF, (uint16_t)CLR_SPSIF);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (g_interrupt_mask & INTF_SOFIF & interrupt_flag) {
|
||
|
|
/* clear SOF interrupt flag in INTF */
|
||
|
|
USBD_REG_SET(USBD_INTF, (uint16_t)CLR_SOFIF);
|
||
|
|
|
||
|
|
/* USB SOF interrupt handle */
|
||
|
|
usbd_intf_sof(&usb_device_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (g_interrupt_mask & INTF_ESOFIF & interrupt_flag) {
|
||
|
|
/* clear ESOF interrupt flag in INTF */
|
||
|
|
USBD_REG_SET(USBD_INTF, (uint16_t)CLR_ESOFIF);
|
||
|
|
|
||
|
|
/* USB ESOF interrupt handle */
|
||
|
|
usbd_intf_esof(&usb_device_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (g_interrupt_mask & INTF_RSTIF & interrupt_flag) {
|
||
|
|
/* clear reset interrupt flag in INTF */
|
||
|
|
USBD_REG_SET(USBD_INTF, (uint16_t)CLR_RSTIF);
|
||
|
|
|
||
|
|
/* USB reset interrupt handle */
|
||
|
|
usbd_intf_reset(&usb_device_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef LPM_ENABLED
|
||
|
|
if (g_interrupt_mask & INTF_L1REQ & interrupt_flag) {
|
||
|
|
/* clear L1 ST bit in LPM INTF */
|
||
|
|
USBD_REG_SET(USBD_INTF, CLR_L1REQ);
|
||
|
|
|
||
|
|
/* read BESL field from subendpoint0 register which coressponds to HIRD parameter in LPM spec */
|
||
|
|
besl = (USBD_REG_GET(USBD_LPMCS) & LPMCS_BLSTAT) >> 4;
|
||
|
|
|
||
|
|
/* read BREMOTEWAKE bit from subendpoint0 register which corresponding to bRemoteWake bit in LPM request */
|
||
|
|
L1_remote_wakeup = (USBD_REG_GET(USBD_LPMCS) & LPMCS_REMWK) >> 8;
|
||
|
|
|
||
|
|
/* process USB device core layer suspend routine */
|
||
|
|
/* enter USB model in suspend and system in low power mode (DEEP_SLEEP mode) */
|
||
|
|
usbd_intf_suspend(&usb_device_dev);
|
||
|
|
}
|
||
|
|
#endif /* LPM_ENABLED */
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle USB low priority successful transfer event
|
||
|
|
\param[in] pudev: pointer to USB device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval USB device operation status
|
||
|
|
*/
|
||
|
|
static uint8_t usbd_intf_lpst (usbd_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
uint8_t ep_num = 0U;
|
||
|
|
|
||
|
|
__IO uint16_t int_status = 0U;
|
||
|
|
__IO uint16_t ep_value = 0U;
|
||
|
|
|
||
|
|
usb_ep_struct *ep = NULL;
|
||
|
|
|
||
|
|
/* wait till interrupts are not pending */
|
||
|
|
while (0U != ((int_status = USBD_REG_GET(USBD_INTF)) & (uint16_t)INTF_STIF)) {
|
||
|
|
/* get endpoint number and the value of control and state register */
|
||
|
|
ep_num = (uint8_t)(int_status & INTF_EPNUM);
|
||
|
|
ep_value = USBD_REG_GET(USBD_EPxCS(ep_num));
|
||
|
|
|
||
|
|
if (0U == (int_status & INTF_DIR)) {
|
||
|
|
/* handle the in direction transaction */
|
||
|
|
|
||
|
|
ep = &(pudev->in_ep[ep_num]);
|
||
|
|
|
||
|
|
if (0U != (ep_value & EPxCS_TX_ST)) {
|
||
|
|
/* clear successful transmit interrupt flag */
|
||
|
|
USBD_ENDP_TX_STAT_CLEAR(ep_num);
|
||
|
|
|
||
|
|
/* just handle single buffer situation */
|
||
|
|
ep->trs_count = (pbuf_reg + ep_num)->tx_count & EPTCNT_CNT;
|
||
|
|
|
||
|
|
/* maybe mutiple packets */
|
||
|
|
ep->trs_buf += ep->trs_count;
|
||
|
|
|
||
|
|
usbd_in_transaction(pudev, ep_num);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/* handle the out direction transaction */
|
||
|
|
|
||
|
|
uint16_t count = 0U;
|
||
|
|
|
||
|
|
ep = &(pudev->out_ep[ep_num]);
|
||
|
|
|
||
|
|
if (0U != (ep_value & EPxCS_RX_ST)) {
|
||
|
|
/* clear successful receive interrupt flag */
|
||
|
|
USBD_ENDP_RX_STAT_CLEAR(ep_num);
|
||
|
|
|
||
|
|
count = (pbuf_reg + ep_num)->rx_count & (uint16_t)EPRCNT_CNT;
|
||
|
|
|
||
|
|
if (0U != count) {
|
||
|
|
if (0U != (ep_value & EPxCS_SETUP)) {
|
||
|
|
/* handle setup packet */
|
||
|
|
usbd_ep_data_read(&(pudev->setup_packet[0]), pbuf_reg->rx_addr, count);
|
||
|
|
|
||
|
|
/* enter setup status */
|
||
|
|
usbd_setup_transaction(pudev);
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
} else {
|
||
|
|
usbd_ep_data_read(ep->trs_buf, (pbuf_reg + ep_num)->rx_addr, count);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* maybe mutiple packets */
|
||
|
|
ep->trs_count += count;
|
||
|
|
ep->trs_buf += count;
|
||
|
|
ep->trs_len -= count;
|
||
|
|
|
||
|
|
if ((0U == ep->trs_len) || (count < ep->maxpacket)) {
|
||
|
|
/* enter data OUT status */
|
||
|
|
usbd_out_transaction(pudev, ep_num);
|
||
|
|
|
||
|
|
ep->trs_count = 0U;
|
||
|
|
} else {
|
||
|
|
usbd_ep_rx(pudev, ep_num, ep->trs_buf, (uint16_t)ep->trs_len);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle USB SOF event
|
||
|
|
\param[in] pudev: pointer to USB device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval USB device operation status
|
||
|
|
*/
|
||
|
|
static uint8_t usbd_intf_sof (usbd_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
/* if necessary, user can add code here */
|
||
|
|
if (NULL != usbd_int_fops) {
|
||
|
|
usbd_int_fops->SOF(pudev);
|
||
|
|
}
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle USB expect SOF event
|
||
|
|
\param[in] pudev: pointer to USB device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval USB device operation status
|
||
|
|
*/
|
||
|
|
static uint8_t usbd_intf_esof (usbd_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
/* control resume time by ESOFs */
|
||
|
|
if (g_ESOF_count > 0U) {
|
||
|
|
g_ESOF_count--;
|
||
|
|
|
||
|
|
if (0U == g_ESOF_count) {
|
||
|
|
if (1U == g_remote_wakeup_on) {
|
||
|
|
USBD_REG_SET(USBD_CTL, USBD_REG_GET(USBD_CTL) & ~CTL_RSREQ);
|
||
|
|
|
||
|
|
g_remote_wakeup_on = 0U;
|
||
|
|
} else {
|
||
|
|
USBD_REG_SET(USBD_CTL, USBD_REG_GET(USBD_CTL) | CTL_RSREQ);
|
||
|
|
|
||
|
|
g_ESOF_count = 3U;
|
||
|
|
g_remote_wakeup_on = 1U;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle USB reset event
|
||
|
|
\param[in] pudev: pointer to USB device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval USB device operation status
|
||
|
|
*/
|
||
|
|
static uint8_t usbd_intf_reset (usbd_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
// uint8_t i;
|
||
|
|
|
||
|
|
g_free_buf_addr = ENDP_BUF_ADDR;
|
||
|
|
|
||
|
|
/* configure endpoint 0 buffer */
|
||
|
|
pbuf_reg->tx_addr = (uint16_t)g_free_buf_addr;
|
||
|
|
g_free_buf_addr += USBD_EP0_MAX_SIZE;
|
||
|
|
|
||
|
|
pbuf_reg->rx_addr = (uint16_t)g_free_buf_addr;
|
||
|
|
g_free_buf_addr += USBD_EP0_MAX_SIZE;
|
||
|
|
|
||
|
|
/* configure endpoint 0 Rx count */
|
||
|
|
pbuf_reg->rx_count = ((USBD_EP0_MAX_SIZE << 5) - 1) | 0x8000;
|
||
|
|
|
||
|
|
pudev->in_ep[EP0].maxpacket = USBD_EP0_MAX_SIZE;
|
||
|
|
pudev->out_ep[EP0].maxpacket = USBD_EP0_MAX_SIZE;
|
||
|
|
|
||
|
|
USBD_REG_SET(USBD_EPxCS(EP0), EP_CONTROL | EPRX_VALID | EPTX_NAK);
|
||
|
|
|
||
|
|
/* set device address as default address 0 */
|
||
|
|
USBD_REG_SET(USBD_DADDR, DADDR_USBEN);
|
||
|
|
|
||
|
|
pudev->status = USBD_DEFAULT;
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle USB suspend event
|
||
|
|
\param[in] pudev: pointer to USB device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval USB device operation status
|
||
|
|
*/
|
||
|
|
static uint8_t usbd_intf_suspend (usbd_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
/* store the device current status */
|
||
|
|
pudev->prev_status = pudev->status;
|
||
|
|
|
||
|
|
/* set device in suspended state */
|
||
|
|
pudev->status = USBD_SUSPENDED;
|
||
|
|
|
||
|
|
/* enter USB in suspend and mcu system in low power mode */
|
||
|
|
if (g_suspend_enabled) {
|
||
|
|
usbd_suspend();
|
||
|
|
} else {
|
||
|
|
/* if not possible then resume after xx ms */
|
||
|
|
g_ESOF_count = 3U;
|
||
|
|
}
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle USB wakeup event
|
||
|
|
\param[in] pudev: pointer to USB device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval USB device operation status
|
||
|
|
*/
|
||
|
|
static uint8_t usbd_intf_wakeup (usbd_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
/* restore the old status */
|
||
|
|
pudev->status = pudev->prev_status;
|
||
|
|
|
||
|
|
#ifdef LPM_ENABLED
|
||
|
|
if ((0U == g_remote_wakeup_on) && (0U == L1_resume)) {
|
||
|
|
resume_mcu();
|
||
|
|
} else if (1U == g_remote_wakeup_on) {
|
||
|
|
/* no operation */
|
||
|
|
} else {
|
||
|
|
L1_resume = 0U;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
if (0U == g_remote_wakeup_on) {
|
||
|
|
resume_mcu();
|
||
|
|
}
|
||
|
|
#endif /* LPM_ENABLED */
|
||
|
|
|
||
|
|
return USBD_OK;
|
||
|
|
}
|