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-rw-r--r--os/hal/src/usb.c427
1 files changed, 230 insertions, 197 deletions
diff --git a/os/hal/src/usb.c b/os/hal/src/usb.c
index 3cc076443..d0db0ed5c 100644
--- a/os/hal/src/usb.c
+++ b/os/hal/src/usb.c
@@ -56,72 +56,18 @@ static const uint8_t halted_status[] = {0x01, 0x00};
*/
void set_address(USBDriver *usbp) {
- usbp->usb_address = usbp->usb_setup[2];
- usb_lld_set_address(usbp, usbp->usb_address);
- if (usbp->usb_config->uc_event_cb)
- usbp->usb_config->uc_event_cb(usbp, USB_EVENT_ADDRESS);
- usbp->usb_state = USB_SELECTED;
-}
-
-/**
- * @brief Starts a receive phase on the endpoint zero.
- *
- * @param[in] usbp pointer to the @p USBDriver object
- */
-static void start_rx_ep0(USBDriver *usbp) {
-
- if (usbp->usb_ep0n > 0) {
- /* The received data cannot exceed the available amount.*/
- if (usbp->usb_ep0n > usbp->usb_ep0max)
- usbp->usb_ep0n = usbp->usb_ep0max;
-
- /* Determines the maximum amount that can be received using a
- single packet.*/
- if (usbp->usb_ep0n > usbp->usb_ep[0]->uep_config->uepc_out_maxsize)
- usbp->usb_ep0lastsize = usbp->usb_ep[0]->uep_config->uepc_out_maxsize;
- else
- usbp->usb_ep0lastsize = usbp->usb_ep0n;
- usbp->usb_ep0state = USB_EP0_RX;
- }
- else {
- /* Sending zero sized status packet.*/
- usb_lld_write(usbp, 0, NULL, 0);
- usbp->usb_ep0state = USB_EP0_SENDING_STS;
- }
-}
-
-/**
- * @brief Starts a transmission phase on the endpoint zero.
- *
- * @param[in] usbp pointer to the @p USBDriver object
- */
-static void start_tx_ep0(USBDriver *usbp) {
-
- if (usbp->usb_ep0n > 0) {
- /* The transmitted data cannot exceed the requested amount.*/
- if (usbp->usb_ep0n > usbp->usb_ep0max)
- usbp->usb_ep0n = usbp->usb_ep0max;
-
- /* Determines the maximum amount that can be transmitted using a
- single packet.*/
- if (usbp->usb_ep0n > usbp->usb_ep[0]->uep_config->uepc_in_maxsize)
- usbp->usb_ep0lastsize = usbp->usb_ep[0]->uep_config->uepc_in_maxsize;
- else
- usbp->usb_ep0lastsize = usbp->usb_ep0n;
-
- /* Starts transmission.*/
- usb_lld_write(usbp, 0, usbp->usb_ep0next, usbp->usb_ep0lastsize);
- usbp->usb_ep0state = USB_EP0_TX;
- }
- else
- usbp->usb_ep0state = USB_EP0_WAITING_STS;
+ usbp->address = usbp->setup[2];
+ usb_lld_set_address(usbp);
+ if (usbp->config->event_cb)
+ usbp->config->event_cb(usbp, USB_EVENT_ADDRESS);
+ usbp->state = USB_SELECTED;
}
/**
* @brief Standard requests handler.
* @details This is the standard requests default handler, most standard
* requests are handled here, the user can override the standard
- * handling using the @p uc_requests_hook_cb hook in the
+ * handling using the @p requests_hook_cb hook in the
* @p USBConfig structure.
*
* @param[in] usbp pointer to the @p USBDriver object
@@ -133,87 +79,93 @@ static bool_t default_handler(USBDriver *usbp) {
const USBDescriptor *dp;
/* Decoding the request.*/
- switch (((usbp->usb_setup[0] & (USB_RTYPE_RECIPIENT_MASK |
- USB_RTYPE_TYPE_MASK)) |
- (usbp->usb_setup[1] << 8))) {
+ switch (((usbp->setup[0] & (USB_RTYPE_RECIPIENT_MASK |
+ USB_RTYPE_TYPE_MASK)) |
+ (usbp->setup[1] << 8))) {
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_STATUS << 8):
/* Just returns the current status word.*/
- usbSetupTransfer(usbp, (uint8_t *)&usbp->usb_status, 2, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)&usbp->status, 2);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_CLEAR_FEATURE << 8):
/* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature
number is handled as an error.*/
- if (usbp->usb_setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) {
- usbp->usb_status &= ~2;
- usbSetupTransfer(usbp, NULL, 0, NULL);
+ if (usbp->setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) {
+ usbp->status &= ~2;
+ usbSetupTransfer(usbp, NULL, 0);
return TRUE;
}
return FALSE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_FEATURE << 8):
/* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature
number is handled as an error.*/
- if (usbp->usb_setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) {
- usbp->usb_status |= 2;
- usbSetupTransfer(usbp, NULL, 0, NULL);
+ if (usbp->setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) {
+ usbp->status |= 2;
+ usbSetupTransfer(usbp, NULL, 0);
return TRUE;
}
return FALSE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_ADDRESS << 8):
- /* The handling is posponed to after the status phase in order to allow
- the proper completion of the transaction.*/
- usbSetupTransfer(usbp, NULL, 0, set_address);
+ /* The SET_ADDRESS handling can be performed here or postponed after
+ the status packed depending on the USB_SET_ADDRESS_MODE low
+ driver setting.*/
+#if USB_SET_ADDRESS_MODE == USB_EARLY_SET_ADDRESS
+ if ((usbp->setup[0] == USB_RTYPE_RECIPIENT_DEVICE) &&
+ (usbp->setup[1] == USB_REQ_SET_ADDRESS))
+ set_address(usbp);
+#endif
+ usbSetupTransfer(usbp, NULL, 0);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_DESCRIPTOR << 8):
/* Handling descriptor requests from the host.*/
- dp = usbp->usb_config->uc_get_descriptor_cb(
- usbp, usbp->usb_setup[3], usbp->usb_setup[2],
- usb_lld_fetch_word(&usbp->usb_setup[4]));
+ dp = usbp->config->get_descriptor_cb(
+ usbp, usbp->setup[3], usbp->setup[2],
+ usb_lld_fetch_word(&usbp->setup[4]));
if (dp == NULL)
return FALSE;
- usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_CONFIGURATION << 8):
/* Returning the last selected configuration.*/
- usbSetupTransfer(usbp, &usbp->usb_configuration, 1, NULL);
+ usbSetupTransfer(usbp, &usbp->configuration, 1);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_CONFIGURATION << 8):
/* Handling configuration selection from the host.*/
- usbp->usb_configuration = usbp->usb_setup[2];
- if (usbp->usb_configuration == 0)
- usbp->usb_state = USB_SELECTED;
+ usbp->configuration = usbp->setup[2];
+ if (usbp->configuration == 0)
+ usbp->state = USB_SELECTED;
else
- usbp->usb_state = USB_ACTIVE;
- if (usbp->usb_config->uc_event_cb)
- usbp->usb_config->uc_event_cb(usbp, USB_EVENT_CONFIGURED);
- usbSetupTransfer(usbp, NULL, 0, NULL);
+ usbp->state = USB_ACTIVE;
+ if (usbp->config->event_cb)
+ usbp->config->event_cb(usbp, USB_EVENT_CONFIGURED);
+ usbSetupTransfer(usbp, NULL, 0);
return TRUE;
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_GET_STATUS << 8):
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_SYNCH_FRAME << 8):
/* Just sending two zero bytes, the application can change the behavior
using a hook..*/
- usbSetupTransfer(usbp, (uint8_t *)zero_status, 2, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)zero_status, 2);
return TRUE;
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_GET_STATUS << 8):
/* Sending the EP status.*/
- if (usbp->usb_setup[4] & 0x80) {
- switch (usb_lld_get_status_in(usbp, usbp->usb_setup[4] & 0x0F)) {
+ if (usbp->setup[4] & 0x80) {
+ switch (usb_lld_get_status_in(usbp, usbp->setup[4] & 0x0F)) {
case EP_STATUS_STALLED:
- usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)halted_status, 2);
return TRUE;
case EP_STATUS_ACTIVE:
- usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)active_status, 2);
return TRUE;
default:
return FALSE;
}
}
else {
- switch (usb_lld_get_status_out(usbp, usbp->usb_setup[4] & 0x0F)) {
+ switch (usb_lld_get_status_out(usbp, usbp->setup[4] & 0x0F)) {
case EP_STATUS_STALLED:
- usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)halted_status, 2);
return TRUE;
case EP_STATUS_ACTIVE:
- usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL);
+ usbSetupTransfer(usbp, (uint8_t *)active_status, 2);
return TRUE;
default:
return FALSE;
@@ -221,29 +173,29 @@ static bool_t default_handler(USBDriver *usbp) {
}
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_CLEAR_FEATURE << 8):
/* Only ENDPOINT_HALT is handled as feature.*/
- if (usbp->usb_setup[2] != USB_FEATURE_ENDPOINT_HALT)
+ if (usbp->setup[2] != USB_FEATURE_ENDPOINT_HALT)
return FALSE;
/* Clearing the EP status, not valid for EP0, it is ignored in that case.*/
- if ((usbp->usb_setup[4] & 0x0F) > 0) {
- if (usbp->usb_setup[4] & 0x80)
- usb_lld_clear_in(usbp, usbp->usb_setup[4] & 0x0F);
+ if ((usbp->setup[4] & 0x0F) > 0) {
+ if (usbp->setup[4] & 0x80)
+ usb_lld_clear_in(usbp, usbp->setup[4] & 0x0F);
else
- usb_lld_clear_out(usbp, usbp->usb_setup[4] & 0x0F);
+ usb_lld_clear_out(usbp, usbp->setup[4] & 0x0F);
}
- usbSetupTransfer(usbp, NULL, 0, NULL);
+ usbSetupTransfer(usbp, NULL, 0);
return TRUE;
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_SET_FEATURE << 8):
/* Only ENDPOINT_HALT is handled as feature.*/
- if (usbp->usb_setup[2] != USB_FEATURE_ENDPOINT_HALT)
+ if (usbp->setup[2] != USB_FEATURE_ENDPOINT_HALT)
return FALSE;
/* Stalling the EP, not valid for EP0, it is ignored in that case.*/
- if ((usbp->usb_setup[4] & 0x0F) > 0) {
- if (usbp->usb_setup[4] & 0x80)
- usb_lld_stall_in(usbp, usbp->usb_setup[4] & 0x0F);
+ if ((usbp->setup[4] & 0x0F) > 0) {
+ if (usbp->setup[4] & 0x80)
+ usb_lld_stall_in(usbp, usbp->setup[4] & 0x0F);
else
- usb_lld_stall_out(usbp, usbp->usb_setup[4] & 0x0F);
+ usb_lld_stall_out(usbp, usbp->setup[4] & 0x0F);
}
- usbSetupTransfer(usbp, NULL, 0, NULL);
+ usbSetupTransfer(usbp, NULL, 0);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_DESCRIPTOR << 8):
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_CLEAR_FEATURE << 8):
@@ -282,9 +234,9 @@ void usbInit(void) {
*/
void usbObjectInit(USBDriver *usbp) {
- usbp->usb_state = USB_STOP;
- usbp->usb_config = NULL;
- usbp->usb_param = NULL;
+ usbp->state = USB_STOP;
+ usbp->config = NULL;
+ usbp->param = NULL;
}
/**
@@ -301,13 +253,13 @@ void usbStart(USBDriver *usbp, const USBConfig *config) {
chDbgCheck((usbp != NULL) && (config != NULL), "usbStart");
chSysLock();
- chDbgAssert((usbp->usb_state == USB_STOP) || (usbp->usb_state == USB_READY),
+ chDbgAssert((usbp->state == USB_STOP) || (usbp->state == USB_READY),
"usbStart(), #1", "invalid state");
- usbp->usb_config = config;
+ usbp->config = config;
for (i = 0; i <= USB_MAX_ENDPOINTS; i++)
- usbp->usb_ep[i] = NULL;
+ usbp->ep[i] = NULL;
usb_lld_start(usbp);
- usbp->usb_state = USB_READY;
+ usbp->state = USB_READY;
chSysUnlock();
}
@@ -323,11 +275,10 @@ void usbStop(USBDriver *usbp) {
chDbgCheck(usbp != NULL, "usbStop");
chSysLock();
- chDbgAssert((usbp->usb_state == USB_STOP) || (usbp->usb_state == USB_READY),
- "usbStop(), #1",
- "invalid state");
+ chDbgAssert((usbp->state == USB_STOP) || (usbp->state == USB_READY),
+ "usbStop(), #1", "invalid state");
usb_lld_stop(usbp);
- usbp->usb_state = USB_STOP;
+ usbp->state = USB_STOP;
chSysUnlock();
}
@@ -348,15 +299,15 @@ void usbStop(USBDriver *usbp) {
void usbInitEndpointI(USBDriver *usbp, usbep_t ep, USBEndpointState *epp,
const USBEndpointConfig *epcp) {
- chDbgAssert(usbp->usb_state == USB_ACTIVE,
+ chDbgAssert(usbp->state == USB_ACTIVE,
"usbEnableEndpointI(), #1", "invalid state");
- chDbgAssert(usbp->usb_ep[ep] != NULL,
+ chDbgAssert(usbp->ep[ep] != NULL,
"usbEnableEndpointI(), #2", "already initialized");
/* Logically enabling the endpoint in the USBDriver structure.*/
memset(epp, 0, sizeof(USBEndpointState));
- epp->uep_config = epcp;
- usbp->usb_ep[ep] = epp;
+ epp->config = epcp;
+ usbp->ep[ep] = epp;
/* Low level endpoint activation.*/
usb_lld_init_endpoint(usbp, ep);
@@ -376,17 +327,101 @@ void usbInitEndpointI(USBDriver *usbp, usbep_t ep, USBEndpointState *epp,
void usbDisableEndpointsI(USBDriver *usbp) {
unsigned i;
- chDbgAssert(usbp->usb_state == USB_SELECTED,
+ chDbgAssert(usbp->state == USB_SELECTED,
"usbDisableEndpointsI(), #1", "invalid state");
for (i = 1; i <= USB_MAX_ENDPOINTS; i++)
- usbp->usb_ep[i] = NULL;
+ usbp->ep[i] = NULL;
/* Low level endpoints deactivation.*/
usb_lld_disable_endpoints(usbp);
}
/**
+ * @brief Starts a receive operation on an OUT endpoint.
+ *
+ * @param[in] usbp pointer to the @p USBDriver object
+ * @param[in] ep endpoint number
+ * @param[out] buf buffer where to copy the endpoint data
+ * @param[in] n maximum number of bytes to copy in the buffer
+ * @return The operation status.
+ * @retval FALSE Receive operation started.
+ * @retval TRUE Endpoint already receiving.
+ *
+ * @iclass
+ */
+bool_t usbStartReceiveI(USBDriver *usbp, usbep_t ep,
+ uint8_t *buf, size_t n) {
+
+ if (usbp->ep[ep]->receiving)
+ return TRUE;
+ usbp->ep[ep]->receiving = TRUE;
+ usb_lld_start_out(usbp, ep, buf, n);
+ return FALSE;
+}
+
+/**
+ * @brief Starts a transmit operation on an IN endpoint.
+ *
+ * @param[in] usbp pointer to the @p USBDriver object
+ * @param[in] ep endpoint number
+ * @param[in] buf buffer where to fetch the endpoint data
+ * @param[in] n maximum number of bytes to copy
+ * @return The operation status.
+ * @retval FALSE Transmit operation started.
+ * @retval TRUE Endpoint already transmitting.
+ *
+ * @iclass
+ */
+bool_t usbStartTransmitI(USBDriver *usbp, usbep_t ep,
+ const uint8_t *buf, size_t n) {
+
+ if (usbp->ep[ep]->transmitting)
+ return TRUE;
+ usbp->ep[ep]->transmitting = TRUE;
+ usb_lld_start_in(usbp, ep, buf, n);
+ return FALSE;
+}
+
+/**
+ * @brief Stalls an OUT endpoint.
+ *
+ * @param[in] usbp pointer to the @p USBDriver object
+ * @param[in] ep endpoint number
+ * @return The operation status.
+ * @retval FALSE Endpoint stalled.
+ * @retval TRUE The endpoint was within a transaction, not stalled.
+ *
+ * @iclass
+ */
+bool_t usbStallReceiveI(USBDriver *usbp, usbep_t ep) {
+
+ if (usbp->ep[ep]->receiving)
+ return TRUE;
+ usb_lld_stall_out(usbp, ep);
+ return FALSE;
+}
+
+/**
+ * @brief Stalls an IN endpoint.
+ *
+ * @param[in] usbp pointer to the @p USBDriver object
+ * @param[in] ep endpoint number
+ * @return The operation status.
+ * @retval FALSE Endpoint stalled.
+ * @retval TRUE The endpoint was within a transaction, not stalled.
+ *
+ * @iclass
+ */
+bool_t usbStallTransmitI(USBDriver *usbp, usbep_t ep) {
+
+ if (usbp->ep[ep]->transmitting)
+ return TRUE;
+ usb_lld_stall_in(usbp, ep);
+ return FALSE;
+}
+
+/**
* @brief USB reset routine.
*
* @param[in] usbp pointer to the @p USBDriver object
@@ -396,24 +431,20 @@ void usbDisableEndpointsI(USBDriver *usbp) {
void _usb_reset(USBDriver *usbp) {
unsigned i;
- usbp->usb_state = USB_READY;
- usbp->usb_status = 0;
- usbp->usb_address = 0;
- usbp->usb_configuration = 0;
+ usbp->state = USB_READY;
+ usbp->status = 0;
+ usbp->address = 0;
+ usbp->configuration = 0;
/* Invalidates all endpoints into the USBDriver structure.*/
for (i = 0; i <= USB_MAX_ENDPOINTS; i++)
- usbp->usb_ep[i] = NULL;
+ usbp->ep[i] = NULL;
/* EP0 state machine initialization.*/
- usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
+ usbp->ep0state = USB_EP0_WAITING_SETUP;
/* Low level reset.*/
usb_lld_reset(usbp);
-
- /* Endpoint zero initialization.*/
-/* usbp->usb_ep[0].uep_config = &usb_lld_ep0config;
- usb_lld_init_endpoint(usbp, 0, &usb_lld_ep0config);*/
}
/**
@@ -427,33 +458,30 @@ void _usb_reset(USBDriver *usbp) {
* @notapi
*/
void _usb_ep0in(USBDriver *usbp, usbep_t ep) {
+ size_t max;
(void)ep;
- switch (usbp->usb_ep0state) {
+ switch (usbp->ep0state) {
case USB_EP0_TX:
- usbp->usb_ep0next += usbp->usb_ep0lastsize;
- usbp->usb_ep0max -= usbp->usb_ep0lastsize;
- usbp->usb_ep0n -= usbp->usb_ep0lastsize;
-
- /* The final condition is when the requested size has been transmitted or
- when a packet has been sent with size less than the maximum packet
- size.*/
- if ((usbp->usb_ep0max == 0) ||
- (usbp->usb_ep0lastsize < usbp->usb_ep[0]->uep_config->uepc_in_maxsize))
- usbp->usb_ep0state = USB_EP0_WAITING_STS;
- else {
- usbp->usb_ep0lastsize =
- usbp->usb_ep0n > usbp->usb_ep[0]->uep_config->uepc_in_maxsize ?
- usbp->usb_ep[0]->uep_config->uepc_in_maxsize :
- usbp->usb_ep0n;
- usb_lld_write(usbp, 0, usbp->usb_ep0next, usbp->usb_ep0lastsize);
- }
+ max = usb_lld_fetch_word(&usbp->setup[6]);
+ /* If the transmitted size is less than the requested size and it is a
+ multiple of the maximum packet size then a zero size packet must be
+ transmitted.*/
+ if ((usbp->ep0n < max) &&
+ ((usbp->ep0n % usbp->ep[0]->config->in_maxsize) == 0)) {
+ usb_lld_start_in(usbp, 0, NULL, 0);
+ return;
+ }
+ usbp->ep0state = USB_EP0_WAITING_STS;
+ usb_lld_start_out(usbp, 0, NULL, 0);
return;
case USB_EP0_SENDING_STS:
- if (usbp->usb_ep0endcb)
- usbp->usb_ep0endcb(usbp);
-
- usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
+#if USB_SET_ADDRESS_MODE == USB_LATE_SET_ADDRESS
+ if ((usbp->setup[0] == USB_RTYPE_RECIPIENT_DEVICE) &&
+ (usbp->setup[1] == USB_REQ_SET_ADDRESS))
+ set_address(usbp);
+#endif
+ usbp->ep0state = USB_EP0_WAITING_SETUP;
return;
default:
;
@@ -461,9 +489,9 @@ void _usb_ep0in(USBDriver *usbp, usbep_t ep) {
/* Error response.*/
usb_lld_stall_in(usbp, 0);
usb_lld_stall_out(usbp, 0);
- if (usbp->usb_config->uc_event_cb)
- usbp->usb_config->uc_event_cb(usbp, USB_EVENT_STALLED);
- usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
+ if (usbp->config->event_cb)
+ usbp->config->event_cb(usbp, USB_EVENT_STALLED);
+ usbp->ep0state = USB_EP0_WAITING_SETUP;
}
/**
@@ -477,62 +505,67 @@ void _usb_ep0in(USBDriver *usbp, usbep_t ep) {
* @notapi
*/
void _usb_ep0out(USBDriver *usbp, usbep_t ep) {
- size_t n, size;
- uint8_t buf[1];
+ size_t n, max;
(void)ep;
- switch (usbp->usb_ep0state) {
+ switch (usbp->ep0state) {
case USB_EP0_WAITING_SETUP:
- /* SETUP packet handling.*/
- n = usb_lld_read(usbp, 0, usbp->usb_setup, 8);
- if (n != 8)
- break;
-
- /* First verify if the application has an handler installed for this
+ /* SETUP packet handling.
+ First verify if the application has an handler installed for this
request.*/
- if (!(usbp->usb_config->uc_requests_hook_cb) ||
- !(usbp->usb_config->uc_requests_hook_cb(usbp))) {
+ if (!(usbp->config->requests_hook_cb) ||
+ !(usbp->config->requests_hook_cb(usbp))) {
/* Invoking the default handler, if this fails then stalls the
endpoint zero as error.*/
- if (((usbp->usb_setup[0] & USB_RTYPE_TYPE_MASK) != USB_RTYPE_TYPE_STD) ||
+ if (((usbp->setup[0] & USB_RTYPE_TYPE_MASK) != USB_RTYPE_TYPE_STD) ||
!default_handler(usbp))
break;
}
/* Transfer preparation. The request handler must have populated
- correctly the fields usb_ep0next, usb_ep0n and usb_ep0endcb using
+ correctly the fields ep0next, ep0n and ep0endcb using
the macro usbSetupTransfer().*/
- usbp->usb_ep0max = usb_lld_fetch_word(&usbp->usb_setup[6]);
- if ((usbp->usb_setup[0] & USB_RTYPE_DIR_MASK) == USB_RTYPE_DIR_DEV2HOST)
- start_tx_ep0(usbp);
- else
- start_rx_ep0(usbp);
+ max = usb_lld_fetch_word(&usbp->setup[6]);
+ /* The transfer size cannot exceed the specified amount.*/
+ if (usbp->ep0n > max)
+ usbp->ep0n = max;
+ if ((usbp->setup[0] & USB_RTYPE_DIR_MASK) == USB_RTYPE_DIR_DEV2HOST) {
+ /* IN phase.*/
+ if (usbp->ep0n > 0) {
+ /* Starts transmission.*/
+ usbp->ep0state = USB_EP0_TX;
+ usb_lld_start_in(usbp, 0, usbp->ep0next, usbp->ep0n);
+ }
+ else {
+ /* Receiving the zero sized status packet.*/
+ usbp->ep0state = USB_EP0_WAITING_STS;
+ usb_lld_start_out(usbp, 0, NULL, 0);
+ }
+ }
+ else {
+ /* OUT phase.*/
+ if (usbp->ep0n > 0) {
+ /* Starts reception.*/
+ usbp->ep0state = USB_EP0_RX;
+ usb_lld_start_out(usbp, 0, usbp->ep0next, usbp->ep0n);
+ }
+ else {
+ /* Sending zero sized status packet.*/
+ usbp->ep0state = USB_EP0_SENDING_STS;
+ usb_lld_start_in(usbp, 0, NULL, 0);
+ }
+ }
return;
case USB_EP0_RX:
- /* Check for buffer overflow.*/
- n = size = usb_lld_get_readable(usbp, 0);
- if (n > usbp->usb_ep0n)
- n = usbp->usb_ep0n;
- /* Fetching received data packet.*/
- n = usb_lld_read(usbp, 0, usbp->usb_ep0next, n);
- if (n > usbp->usb_ep0max)
- break;
- usbp->usb_ep0max -= size;
- usbp->usb_ep0n -= n;
- usbp->usb_ep0next += n;
- if (usbp->usb_ep0max == 0) {
- usb_lld_write(usbp, 0, NULL, 0);
- usbp->usb_ep0state = USB_EP0_SENDING_STS;
- }
+ usbp->ep0state = USB_EP0_SENDING_STS;
+ usb_lld_start_in(usbp, 0, NULL, 0);
return;
case USB_EP0_WAITING_STS:
/* STATUS received packet handling, it must be zero sized.*/
- n = usb_lld_read(usbp, 0, buf, 1);
+ n = usbp->ep[0]->rxsize;
if (n != 0)
break;
- if (usbp->usb_ep0endcb)
- usbp->usb_ep0endcb(usbp);
- usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
+ usbp->ep0state = USB_EP0_WAITING_SETUP;
return;
default:
;
@@ -540,9 +573,9 @@ void _usb_ep0out(USBDriver *usbp, usbep_t ep) {
/* Error response.*/
usb_lld_stall_in(usbp, 0);
usb_lld_stall_out(usbp, 0);
- if (usbp->usb_config->uc_event_cb)
- usbp->usb_config->uc_event_cb(usbp, USB_EVENT_STALLED);
- usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
+ if (usbp->config->event_cb)
+ usbp->config->event_cb(usbp, USB_EVENT_STALLED);
+ usbp->ep0state = USB_EP0_WAITING_SETUP;
}
#endif /* HAL_USE_USB */
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-08 12:05:14 +0000