diff options
| author | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-09-08 10:43:31 +0000 |
|---|---|---|
| committer | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-09-08 10:43:31 +0000 |
| commit | aa7557a5f206124dc232343be2010f7d9b82e267 (patch) | |
| tree | 0a84f3ded31ee0ad2d63d283af0ea7ce8b0fdab6 /os | |
| parent | 4376041f33960189d088ac3d87b7cab178269484 (diff) | |
| download | ChibiOS-aa7557a5f206124dc232343be2010f7d9b82e267.tar.gz ChibiOS-aa7557a5f206124dc232343be2010f7d9b82e267.tar.bz2 ChibiOS-aa7557a5f206124dc232343be2010f7d9b82e267.zip | |
USB suspend mode.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8286 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os')
| -rw-r--r-- | os/hal/include/usb.h | 13 | ||||
| -rw-r--r-- | os/hal/ports/STM32/LLD/OTGv1/usb_lld.c | 8 | ||||
| -rw-r--r-- | os/hal/src/usb.c | 45 |
3 files changed, 55 insertions, 11 deletions
diff --git a/os/hal/include/usb.h b/os/hal/include/usb.h index 267c519ba..9f7cbf630 100644 --- a/os/hal/include/usb.h +++ b/os/hal/include/usb.h @@ -258,11 +258,12 @@ typedef uint8_t usbep_t; * @brief Type of a driver state machine possible states.
*/
typedef enum {
- USB_UNINIT = 0, /**< Not initialized. */
- USB_STOP = 1, /**< Stopped. */
- USB_READY = 2, /**< Ready, after bus reset. */
- USB_SELECTED = 3, /**< Address assigned. */
- USB_ACTIVE = 4 /**< Active, configuration selected.*/
+ USB_UNINIT = 0, /**< Not initialized. */
+ USB_STOP = 1, /**< Stopped. */
+ USB_READY = 2, /**< Ready, after bus reset. */
+ USB_SELECTED = 3, /**< Address assigned. */
+ USB_ACTIVE = 4, /**< Active, configuration selected.*/
+ USB_SUSPENDED = 5 /**< Suspended, low power mode. */
} usbstate_t;
/**
@@ -583,6 +584,8 @@ extern "C" { bool usbStallReceiveI(USBDriver *usbp, usbep_t ep);
bool usbStallTransmitI(USBDriver *usbp, usbep_t ep);
void _usb_reset(USBDriver *usbp);
+ void _usb_suspend(USBDriver *usbp);
+ void _usb_wakeup(USBDriver *usbp);
void _usb_ep0setup(USBDriver *usbp, usbep_t ep);
void _usb_ep0in(USBDriver *usbp, usbep_t ep);
void _usb_ep0out(USBDriver *usbp, usbep_t ep);
diff --git a/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c b/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c index 33f3b43c4..b6d2f1cdd 100644 --- a/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c +++ b/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c @@ -589,21 +589,19 @@ static void usb_lld_serve_interrupt(USBDriver *usbp) { /* Clear the Remote Wake-up Signaling.*/
otgp->DCTL |= DCTL_RWUSIG;
- /* Signaling the wakeup event.*/
- _usb_isr_invoke_event_cb(usbp, USB_EVENT_WAKEUP);
+ _usb_wakeup(usbp);
}
/* Suspend handling.*/
if (sts & GINTSTS_USBSUSP) {
- /* Signaling the suspend event.*/
- _usb_isr_invoke_event_cb(usbp, USB_EVENT_SUSPEND);
+ _usb_suspend(usbp);
}
/* Reset interrupt handling.*/
if (sts & GINTSTS_USBRST) {
+
_usb_reset(usbp);
- _usb_isr_invoke_event_cb(usbp, USB_EVENT_RESET);
}
/* Enumeration done.*/
diff --git a/os/hal/src/usb.c b/os/hal/src/usb.c index c563d5fea..c4f612d0f 100644 --- a/os/hal/src/usb.c +++ b/os/hal/src/usb.c @@ -314,7 +314,8 @@ void usbStop(USBDriver *usbp) { osalSysLock();
osalDbgAssert((usbp->state == USB_STOP) || (usbp->state == USB_READY) ||
- (usbp->state == USB_SELECTED) || (usbp->state == USB_ACTIVE),
+ (usbp->state == USB_SELECTED) || (usbp->state == USB_ACTIVE) ||
+ (usbp->state == USB_SUSPENDED),
"invalid state");
usb_lld_stop(usbp);
usbp->state = USB_STOP;
@@ -607,7 +608,10 @@ bool usbStallTransmitI(USBDriver *usbp, usbep_t ep) { void _usb_reset(USBDriver *usbp) {
unsigned i;
+ /* State transition.*/
usbp->state = USB_READY;
+
+ /* Resetting internal state.*/
usbp->status = 0;
usbp->address = 0;
usbp->configuration = 0;
@@ -624,6 +628,45 @@ void _usb_reset(USBDriver *usbp) { /* Low level reset.*/
usb_lld_reset(usbp);
+
+ /* Notification of reset event.*/
+ _usb_isr_invoke_event_cb(usbp, USB_EVENT_RESET);
+}
+
+/**
+ * @brief USB suspend routine.
+ * @details This function must be invoked when an USB bus suspend condition is
+ * detected.
+ *
+ * @param[in] usbp pointer to the @p USBDriver object
+ *
+ * @notapi
+ */
+void _usb_suspend(USBDriver *usbp) {
+
+ /* State transition.*/
+ usbp->state = USB_SUSPENDED;
+
+ /* Notification of suspend event.*/
+ _usb_isr_invoke_event_cb(usbp, USB_EVENT_SUSPEND);
+}
+
+/**
+ * @brief USB wake-up routine.
+ * @details This function must be invoked when an USB bus wake-up condition is
+ * detected.
+ *
+ * @param[in] usbp pointer to the @p USBDriver object
+ *
+ * @notapi
+ */
+void _usb_wakeup(USBDriver *usbp) {
+
+ /* State transition.*/
+ usbp->state = USB_ACTIVE;
+
+ /* Notification of suspend event.*/
+ _usb_isr_invoke_event_cb(usbp, USB_EVENT_WAKEUP);
}
/**
|