void cdc_ecm_configure_endpoints() {
#if CDC_ECM_USES_INTERRUPT_ENDPOINT
usb_configure_endpoint(INT_EP, \
TYPE_INTERRUPT, \
DIRECTION_IN, \
SIZE_8, \
TWO_BANKS, \
NYET_ENABLED);
#endif
usb_configure_endpoint(TX_EP, \
TYPE_BULK, \
DIRECTION_IN, \
SIZE_64, \
TWO_BANKS, \
NYET_ENABLED);
usb_configure_endpoint(RX_EP, \
TYPE_BULK, \
DIRECTION_OUT, \
SIZE_64, \
TWO_BANKS, \
NYET_ENABLED);
#if CDC_ECM_USES_INTERRUPT_ENDPOINT
Usb_reset_endpoint(INT_EP);
#endif
Usb_reset_endpoint(TX_EP);
Usb_reset_endpoint(RX_EP);
usb_eth_is_active = 1;
}
void uart_usb_configure_endpoints() {
usb_configure_endpoint(
VCP_INT_EP,
TYPE_INTERRUPT,
DIRECTION_IN,
SIZE_32,
ONE_BANK,
NYET_ENABLED
);
usb_configure_endpoint(
VCP_TX_EP,
TYPE_BULK,
DIRECTION_IN,
SIZE_32,
TWO_BANKS,
NYET_ENABLED
);
usb_configure_endpoint(
VCP_RX_EP,
TYPE_BULK,
DIRECTION_OUT,
SIZE_32,
TWO_BANKS,
NYET_ENABLED
);
Usb_reset_endpoint(VCP_INT_EP);
Usb_reset_endpoint(VCP_TX_EP);
Usb_reset_endpoint(VCP_RX_EP);
USB_CDC_ACM_HOOK_CONFIGURED();
}
//! @brief This function selects (and resets) the interface alternate setting
//!
//! @param wInterface Interface selected
//! @param alternate_setting alternate setting selected
//!
void usb_user_interface_reset(U16 wInterface, U8 alternate_setting)
{
// default setting selected = reset data toggle
if( INTERFACE_NB == wInterface )
{
// Interface Mass Storage
Usb_select_endpoint(EP_MS_IN);
Usb_disable_stall_handshake();
Usb_reset_endpoint(EP_MS_IN);
Usb_reset_data_toggle();
Usb_select_endpoint(EP_MS_OUT);
Usb_disable_stall_handshake();
Usb_reset_endpoint(EP_MS_OUT);
Usb_reset_data_toggle();
}
}
//! usb_clear_feature.
//!
//! This function manages the SET FEATURE request.
//!
//! @warning Code:xx bytes (function code length)
//!
void usb_clear_feature(void)
{
U8 wValue;
U8 wIndex;
U8 dummy;
if (bmRequestType == ZERO_TYPE)
{
return;
}
else if (bmRequestType == INTERFACE_TYPE)
{
return;
}
else if (bmRequestType == ENDPOINT_TYPE)
{
wValue = Usb_read_byte();
dummy = Usb_read_byte(); //!< dummy read
if (wValue == FEATURE_ENDPOINT_HALT)
{
wIndex = (Usb_read_byte() & MSK_EP_DIR);
Usb_select_endpoint(wIndex);
if(Is_usb_endpoint_enabled())
{
if(wIndex != EP_CONTROL)
{
Usb_disable_stall_handshake();
Usb_reset_endpoint(wIndex);
Usb_reset_data_toggle();
}
Usb_select_endpoint(EP_CONTROL);
endpoint_status[wIndex] = 0x00;
Usb_ack_receive_setup();
Usb_send_control_in();
}
else
{
return;
}
}
else
{
return;
}
}
}
//! This function manages the CLEAR FEATURE request.
//!
void usb_clear_feature(void)
{
U8 wValue;
U8 wIndex;
switch (bmRequestType)
{
#if (USB_REMOTE_WAKEUP_FEATURE == true)
case USB_SETUP_SET_STAND_DEVICE:
wValue = Usb_read_endpoint_data(EP_CONTROL, 8);
if (wValue != FEATURE_DEVICE_REMOTE_WAKEUP)
break; // Invalid request
device_status &= ~USB_DEV_STATUS_REMOTEWAKEUP;
remote_wakeup_feature = false;
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
return;
#endif
case USB_SETUP_SET_STAND_INTERFACE:
break;
case USB_SETUP_SET_STAND_ENDPOINT:
wValue = Usb_read_endpoint_data(EP_CONTROL, 8);
if (wValue != FEATURE_ENDPOINT_HALT)
break;
Usb_read_endpoint_data(EP_CONTROL, 8); //!< dummy read (MSB of wValue)
wIndex = Usb_read_endpoint_data(EP_CONTROL, 8);
wIndex = Get_desc_ep_nbr(wIndex);
if (!Is_usb_endpoint_enabled(wIndex))
break;
if (wIndex != EP_CONTROL)
{
Usb_disable_stall_handshake(wIndex);
Usb_reset_endpoint(wIndex);
Usb_reset_data_toggle(wIndex);
}
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
return;
default:
break;
}
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
}
//! This function manages the CLEAR FEATURE request.
//!
void usb_clear_feature(void)
{
U8 wValue;
U8 wIndex;
if (bmRequestType == DEVICE_TYPE || bmRequestType == INTERFACE_TYPE)
{
//!< keep that order (set StallRq/clear RxSetup) or a
//!< OUT request following the SETUP may be acknowledged
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
}
else if (bmRequestType == ENDPOINT_TYPE)
{
wValue = Usb_read_endpoint_data(EP_CONTROL, 8);
if (wValue == FEATURE_ENDPOINT_HALT)
{
Usb_read_endpoint_data(EP_CONTROL, 8); //!< dummy read (MSB of wValue)
wIndex = Usb_read_endpoint_data(EP_CONTROL, 8);
wIndex = Get_desc_ep_nbr(wIndex);
if (Is_usb_endpoint_enabled(wIndex))
{
if (wIndex != EP_CONTROL)
{
Usb_disable_stall_handshake(wIndex);
Usb_reset_endpoint(wIndex);
Usb_reset_data_toggle(wIndex);
}
endpoint_status[wIndex] = 0; // Halt feature flag
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
}
else
{
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
}
}
else
{
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
}
}
}
//! usb_user_endpoint_init.
//!
//! @brief This function configures the endpoints.
//!
//! @param conf_nb Not used
void usb_user_endpoint_init(U8 conf_nb)
{
/* If we use RNDIS endpoints */
if ((usb_mode == rndis_only) || (usb_mode == rndis_debug)) {
usb_configure_endpoint(INT_EP, \
TYPE_INTERRUPT, \
DIRECTION_IN, \
SIZE_64, \
ONE_BANK, \
NYET_ENABLED);
usb_configure_endpoint(TX_EP, \
TYPE_BULK, \
DIRECTION_IN, \
SIZE_64, \
TWO_BANKS, \
NYET_ENABLED);
usb_configure_endpoint(RX_EP, \
TYPE_BULK, \
DIRECTION_OUT, \
SIZE_64, \
TWO_BANKS, \
NYET_ENABLED);
}
/* If we use virtual comm port (VCP) endpoints */
if (usb_mode == rndis_debug) {
usb_configure_endpoint(VCP_INT_EP, \
TYPE_INTERRUPT, \
DIRECTION_IN, \
SIZE_32, \
ONE_BANK, \
NYET_ENABLED);
usb_configure_endpoint(VCP_TX_EP, \
TYPE_BULK, \
DIRECTION_IN, \
SIZE_32, \
TWO_BANKS, \
NYET_ENABLED);
usb_configure_endpoint(VCP_RX_EP, \
TYPE_BULK, \
DIRECTION_OUT, \
SIZE_32, \
TWO_BANKS, \
NYET_ENABLED);
}
/* If we use mass storage endpoints */
if (usb_mode == mass_storage) {
usb_configure_endpoint(MS_IN_EP, \
TYPE_BULK, \
DIRECTION_IN, \
SIZE_64, \
ONE_BANK, \
NYET_ENABLED);
usb_configure_endpoint(MS_OUT_EP, \
TYPE_BULK, \
DIRECTION_OUT, \
SIZE_64, \
ONE_BANK, \
NYET_ENABLED);
}
if ((usb_mode == rndis_only) || (usb_mode == rndis_debug)) {
Usb_reset_endpoint(INT_EP);
Usb_reset_endpoint(TX_EP);
Usb_reset_endpoint(RX_EP);
}
if (usb_mode == rndis_debug){
Usb_reset_endpoint(VCP_INT_EP);
Usb_reset_endpoint(VCP_TX_EP);
Usb_reset_endpoint(VCP_RX_EP);
}
if (usb_mode == mass_storage) {
Usb_reset_endpoint(VCP_TX_EP);
Usb_reset_endpoint(VCP_RX_EP);
}
}
//! This function manages the SET INTERFACE request.
//!
void usb_set_interface(void)
{
U8 u8_i;
// wValue = Alternate Setting
// wIndex = Interface
U16 wValue = usb_format_usb_to_mcu_data(16, Usb_read_endpoint_data(EP_CONTROL, 16));
U16 wIndex = usb_format_usb_to_mcu_data(16, Usb_read_endpoint_data(EP_CONTROL, 16));
Usb_ack_setup_received_free();
// Get descriptor
#if (USB_HIGH_SPEED_SUPPORT==true)
if( Is_usb_full_speed_mode() )
{
data_to_transfer = Usb_get_conf_desc_fs_length(); //!< sizeof(usb_conf_desc_fs);
pbuffer = Usb_get_conf_desc_fs_pointer();
}else{
data_to_transfer = Usb_get_conf_desc_hs_length(); //!< sizeof(usb_conf_desc_hs);
pbuffer = Usb_get_conf_desc_hs_pointer();
}
#else
data_to_transfer = Usb_get_conf_desc_length(); //!< sizeof(usb_conf_desc);
pbuffer = Usb_get_conf_desc_pointer();
#endif
//** Scan descriptor
//* Find configuration selected
if( usb_configuration_nb == 0 )
{
// No configuration selected then no interface enable
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
return;
}
u8_i = usb_configuration_nb;
while( u8_i != 0 )
{
if( CONFIGURATION_DESCRIPTOR != ((S_usb_configuration_descriptor*)pbuffer)->bDescriptorType )
{
data_to_transfer -= ((S_usb_configuration_descriptor*)pbuffer)->bLength;
pbuffer = (U8*)pbuffer + ((S_usb_configuration_descriptor*)pbuffer)->bLength;
continue;
}
u8_i--;
if( u8_i != 0 )
{
data_to_transfer -= ((S_usb_configuration_descriptor*)pbuffer)->wTotalLength;
pbuffer = (U8*)pbuffer + ((S_usb_configuration_descriptor*)pbuffer)->wTotalLength;
}
}
// Find interface selected
if( wIndex >= ((S_usb_configuration_descriptor*)pbuffer)->bNumInterfaces )
{
// Interface number unknown
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
return;
}
while( 1 )
{
if( data_to_transfer <= ((S_usb_interface_descriptor*)pbuffer)->bLength )
{
// Interface unknown
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
return;
}
data_to_transfer -= ((S_usb_interface_descriptor*)pbuffer)->bLength;
pbuffer = (U8*)pbuffer + ((S_usb_interface_descriptor*)pbuffer)->bLength;
if( INTERFACE_DESCRIPTOR != ((S_usb_interface_descriptor*)pbuffer)->bDescriptorType )
continue;
if( wIndex != ((S_usb_interface_descriptor*)pbuffer)->bInterfaceNumber )
continue;
if( wValue != ((S_usb_interface_descriptor*)pbuffer)->bAlternateSetting )
continue;
usb_interface_status[wIndex] = wValue;
break;
}
//* Find endpoints of interface and reset it
while( 1 )
{
if( data_to_transfer <= ((S_usb_endpoint_descriptor*)pbuffer)->bLength )
break; // End of interface
data_to_transfer -= ((S_usb_endpoint_descriptor*)pbuffer)->bLength;
pbuffer = (U8*)pbuffer + ((S_usb_endpoint_descriptor*)pbuffer)->bLength;
if( INTERFACE_DESCRIPTOR == ((S_usb_endpoint_descriptor*)pbuffer)->bDescriptorType )
break; // End of interface
if( ENDPOINT_DESCRIPTOR == ((S_usb_endpoint_descriptor*)pbuffer)->bDescriptorType )
{
// Reset endpoint
u8_i = ((S_usb_endpoint_descriptor*)pbuffer)->bEndpointAddress & (~MSK_EP_DIR);
Usb_disable_stall_handshake(u8_i);
Usb_reset_endpoint(u8_i);
Usb_reset_data_toggle(u8_i);
}
}
// send a ZLP for STATUS phase
Usb_ack_control_in_ready_send();
while (!Is_usb_control_in_ready());
}
//! This function manages the SET FEATURE request. The USB test modes are
//! supported by this function.
//!
void usb_set_feature(void)
{
U16 wValue = usb_format_usb_to_mcu_data(16, Usb_read_endpoint_data(EP_CONTROL, 16));
U16 wIndex = usb_format_usb_to_mcu_data(16, Usb_read_endpoint_data(EP_CONTROL, 16));
U16 wLength = usb_format_usb_to_mcu_data(16, Usb_read_endpoint_data(EP_CONTROL, 16));
if (wLength)
goto unsupported_request;
if (bmRequestType==USB_SETUP_SET_STAND_DEVICE) {
#if (USB_REMOTE_WAKEUP_FEATURE == true)
if (FEATURE_DEVICE_REMOTE_WAKEUP == wValue)
{
device_status |= USB_DEV_STATUS_REMOTEWAKEUP;
remote_wakeup_feature = true;
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
return;
}
#endif
goto unsupported_request;
}
switch (wValue)
{
case FEATURE_ENDPOINT_HALT:
wIndex = Get_desc_ep_nbr(wIndex); // clear direction flag
if (bmRequestType != ENDPOINT_TYPE ||
wIndex == EP_CONTROL ||
!Is_usb_endpoint_enabled(wIndex))
goto unsupported_request;
Usb_enable_stall_handshake(wIndex);
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
break;
#if (USB_HIGH_SPEED_SUPPORT==true)
case FEATURE_TEST_MODE:
if (bmRequestType != DEVICE_TYPE ||
wIndex & 0x00FF)
goto unsupported_request;
switch (wIndex >> 8)
{
case TEST_J:
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
while (!Is_usb_control_in_ready());
Wr_bitfield(AVR32_USBB_udcon, AVR32_USBB_UDCON_SPDCONF_MASK, 2);
Set_bits(AVR32_USBB_udcon, AVR32_USBB_UDCON_TSTJ_MASK);
break;
case TEST_K:
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
while (!Is_usb_control_in_ready());
Wr_bitfield(AVR32_USBB_udcon, AVR32_USBB_UDCON_SPDCONF_MASK, 2);
Set_bits(AVR32_USBB_udcon, AVR32_USBB_UDCON_TSTK_MASK);
break;
case TEST_SE0_NAK:
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
while (!Is_usb_control_in_ready());
Wr_bitfield(AVR32_USBB_udcon, AVR32_USBB_UDCON_SPDCONF_MASK, 2);
break;
case TEST_PACKET:
{
static const U8 test_packet[] =
{
// 00000000 * 9
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// 01010101 * 8
0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
// 01110111 * 8
0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE,
// 0, {111111S * 15}, 111111
0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// S, 111111S, {0111111S * 7}
0x7F, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD,
// 00111111, {S0111111 * 9}, S0
0xFC, 0x7E, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD, 0x7E
};
Usb_ack_setup_received_free();
Usb_ack_control_in_ready_send();
while (!Is_usb_control_in_ready());
Wr_bitfield(AVR32_USBB_udcon, AVR32_USBB_UDCON_SPDCONF_MASK, 2);
Usb_disable_endpoint(EP_CONTROL);
Usb_unallocate_memory(EP_CONTROL);
(void)Usb_configure_endpoint(EP_CONTROL,
TYPE_BULK,
DIRECTION_IN,
64,
SINGLE_BANK);
Usb_reset_endpoint(EP_CONTROL);
Set_bits(AVR32_USBB_udcon, AVR32_USBB_UDCON_TSTPCKT_MASK);
usb_write_ep_txpacket(EP_CONTROL, &test_packet, sizeof(test_packet), NULL);
Usb_send_in(EP_CONTROL);
}
break;
case TEST_FORCE_ENABLE: // Only for downstream facing hub ports
default:
goto unsupported_request;
}
break;
#endif
case FEATURE_DEVICE_REMOTE_WAKEUP:
default:
goto unsupported_request;
}
return;
unsupported_request:
Usb_enable_stall_handshake(EP_CONTROL);
Usb_ack_setup_received_free();
}
//! @brief Entry point of the USB device mamagement
//!
//! This function is the entry point of the USB management. Each USB
//! event is checked here in order to launch the appropriate action.
//! If a Setup request occurs on the Default Control Endpoint,
//! the usb_process_request() function is call in the usb_standard_request.c file
//!
//! @param none
//!
//! @return none
void usb_device_task(void)
{
#if (USB_OTG_FEATURE == ENABLED)
// Check if a reset has been received
if(Is_usb_event(EVT_USB_RESET))
{
Usb_ack_event(EVT_USB_RESET);
Usb_reset_endpoint(0);
usb_configuration_nb=0;
otg_b_device_state = B_IDLE;
Clear_otg_features_from_host();
}
// When OTG mode enabled, B-Device is managed thanks to its state machine
switch (otg_b_device_state)
{
//------------------------------------------------------
// B_IDLE state
//
// - waits for Vbus to rise
// - initiate SRP if asked by user
//
case B_IDLE:
if (Is_usb_vbus_high())
{
// Vbus rise
usb_connected = TRUE;
remote_wakeup_feature = DISABLED;
usb_start_device();
Usb_vbus_on_action();
Usb_attach();
otg_b_device_state = B_PERIPHERAL;
Ack_user_request_srp();
Clear_otg_features_from_host();
remote_wakeup_feature = DISABLED;
End_session_with_srp();
if (Is_srp_sent_and_waiting_answer() && (sof_seen_in_session == TRUE))
{
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_A_RESPONDED,OTG_TEMPO_2SEC);
}
Usb_enable_sof_interrupt();
}
else
{
if (Is_user_requested_srp() && Is_usb_id_device())
{
// User has requested a SRP
Ack_user_request_srp();
if (!Is_srp_sent_and_waiting_answer())
{
Pll_start_auto(); // reinit device mode
Wait_pll_ready();
Usb_disable();
Usb_enable_uid_pin();
Usb_enable();
Usb_unfreeze_clock();
Usb_select_device();
Usb_attach();
otg_b_device_state = B_SRP_INIT;
Usb_device_initiate_srp(); // hardware waits for initial condition (SE0, Session End level)
sof_seen_in_session = FALSE;
}
}
if ((Is_srp_sent_and_waiting_answer()) && (Is_tb_srp_counter_overflow()))
{
// SRP failed because A-Device did not respond
End_session_with_srp();
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_SRP_A_NO_RESP,OTG_TEMPO_3SEC);
}
}
break;
//------------------------------------------------------
// B_SRP_INIT
//
// - a SRP has been initiated
// - B-Device waits it is finished to initialize variables
//
case B_SRP_INIT:
if (!Is_usb_device_initiating_srp())
{
otg_b_device_state = B_IDLE; // SRP initiated, return to Idle state (wait for Vbus to rise)
Srp_sent_and_waiting_answer();
Init_tb_srp_counter();
Start_session_with_srp();
Otg_print_new_event_message(OTGMSG_SRP_STARTED,TB_SRP_FAIL_MIN);
}
break;
//------------------------------------------------------
// B_PERIPHERAL : the main state of OTG Peripheral
//
// - all events are interrupt-handled
// - but they are saved and this function can execute alternate actions
// - also handle user requests (disconnect)
//
// ======================================================================================
case B_PERIPHERAL:
if (Is_otg_event(EVT_OTG_DEVICE_CONNECTED))
{
Otg_ack_event(EVT_OTG_DEVICE_CONNECTED); // set on a SetConfiguration descriptor reception
Otg_print_new_event_message(OTGMSG_CONNECTED_TO_A,OTG_TEMPO_4SEC);
}
if (Is_usb_event(EVT_USB_SUSPEND)) // SUSPEND state
{
// Suspend and HNP operations are handled in the interrupt functions
}
if (Is_srp_sent_and_waiting_answer() && (sof_seen_in_session == TRUE))
{
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_A_RESPONDED,OTG_TEMPO_2SEC);
}
if ((Is_srp_sent_and_waiting_answer()) && (Is_tb_srp_counter_overflow()))
{
// SRP failed because A-Device did not respond
End_session_with_srp();
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_SRP_A_NO_RESP,OTG_TEMPO_3SEC);
}
if (Is_usb_event(EVT_USB_RESUME) && !Is_usb_pending_remote_wake_up()) // RESUME signal detected
{
Usb_ack_event(EVT_USB_RESUME);
Usb_ack_event(EVT_USB_SUSPEND);
Usb_ack_remote_wake_up_start();
}
if (Is_usb_event(EVT_USB_UNPOWERED))
{
Usb_ack_event(EVT_USB_UNPOWERED);
Clear_all_user_request();
otg_b_device_state = B_IDLE;
}
if(Is_usb_event(EVT_USB_RESET))
{
Usb_ack_event(EVT_USB_RESET);
Usb_reset_endpoint(0);
usb_configuration_nb=0;
Clear_otg_features_from_host();
}
if (Is_otg_event(EVT_OTG_HNP_ERROR))
{
Otg_ack_event(EVT_OTG_HNP_ERROR);
Otg_print_new_failure_message(OTGMSG_DEVICE_NO_RESP,OTG_TEMPO_4SEC);
PORTC &= ~0x10;
}
if (Is_user_requested_disc())
{
Ack_user_request_disc();
if (Is_usb_id_device())
{
Usb_detach();
Usb_freeze_clock();
while (Is_usb_vbus_high()); // wait for Vbus to be under Va_vbus_valid
otg_b_device_state = B_IDLE;
usb_configuration_nb = 0;
usb_connected = FALSE;
Clear_all_user_request();
}
}
break;
//------------------------------------------------------
// B_HOST
//
// - state entered after an HNP success
// - handle user requests (disconnection, suspend, hnp)
// - call the "host_task()" for Host level handlers
//
// ======================================================================================
case B_HOST:
if (Is_otg_event(EVT_OTG_DEV_UNSUPPORTED))
{
Otg_ack_event(EVT_OTG_DEV_UNSUPPORTED);
Clear_all_user_request();
otg_b_device_state = B_IDLE;
device_state = DEVICE_UNATTACHED;
}
if (Is_user_requested_disc() || Is_user_requested_suspend() || Is_user_requested_hnp())
{
Ack_user_request_disc(); // suspend and hnp requests cleared in B_END_HNP_SUSPEND stage
Host_disable_sof(); // go into suspend mode
Usb_host_reject_hnp();
otg_b_device_state = B_END_HNP_SUSPEND;
Usb_ack_suspend();
Usb_enable_suspend_interrupt();
}
if (Is_usb_event(EVT_USB_UNPOWERED))
{
Usb_ack_event(EVT_USB_UNPOWERED);
Usb_freeze_clock();
otg_b_device_state = B_IDLE;
device_state = DEVICE_UNATTACHED;
}
usb_host_task(); // call the host task
break;
//------------------------------------------------------
// B_END_HNP_SUSPEND
//
// - device enters this state after being B_HOST, on a user request to stop bus activity (suspend, disconnect or hnp request)
// - macro is reset to peripheral mode
//
// ======================================================================================
case B_END_HNP_SUSPEND:
if (Is_usb_event(EVT_USB_SUSPEND))
{
Usb_ack_event(EVT_USB_SUSPEND);
Usb_device_stop_hnp();
Usb_select_device();
device_state = DEVICE_UNATTACHED;
if (Is_user_requested_hnp() || Is_user_requested_suspend())
{
otg_b_device_state = B_PERIPHERAL;
Ack_user_request_suspend();
Ack_user_request_hnp();
}
else
{
otg_b_device_state = B_IDLE;
Usb_detach();
Usb_freeze_clock();
}
}
break;
default:
otg_b_device_state = B_IDLE;
Clear_all_user_request();
device_state = DEVICE_UNATTACHED;
break;
}
#else
// Non-OTG exclusives Device operations
// VBUS state detection
if (Is_usb_vbus_high()&& (usb_connected==FALSE))
{
usb_connected = TRUE;
remote_wakeup_feature = DISABLED;
Usb_vbus_on_action();
Usb_send_event(EVT_USB_POWERED);
usb_start_device();
}
if (Is_usb_vbus_low()&& (usb_connected==TRUE))
{
usb_connected = FALSE;
usb_configuration_nb = 0;
Usb_send_event(EVT_USB_UNPOWERED);
Usb_detach();
Usb_freeze_clock();
Usb_vbus_off_action();
}
if(Is_usb_event(EVT_USB_RESET))
{
Usb_ack_event(EVT_USB_RESET);
Usb_reset_endpoint(0);
usb_configuration_nb=0;
}
#endif
// =======================================
// Common Standard Device Control Requests
// =======================================
// - device enumeration process
// - device control commands and features
Usb_select_endpoint(EP_CONTROL);
if (Is_usb_receive_setup())
{
usb_process_request();
}
}
//! usb_clear_feature.
//!
//! This function manages the SET FEATURE request.
//!
//! @warning Code:xx bytes (function code length)
//!
//! @param none
//!
//! @return none
//!
void usb_clear_feature(void)
{
U8 wValue;
U8 wIndex;
U8 dummy;
if (bmRequestType == ZERO_TYPE)
{
//!< keep that order (set StallRq/clear RxSetup) or a
//!< OUT request following the SETUP may be acknowledged
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
else if (bmRequestType == INTERFACE_TYPE)
{
//!< keep that order (set StallRq/clear RxSetup) or a
//!< OUT request following the SETUP may be acknowledged
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
else if (bmRequestType == ENDPOINT_TYPE)
{
wValue = Usb_read_byte();
dummy = Usb_read_byte(); //!< dummy read
if (wValue == FEATURE_ENDPOINT_HALT)
{
wIndex = (Usb_read_byte() & MSK_EP_DIR);
Usb_select_endpoint(wIndex);
if(Is_usb_endpoint_enabled())
{
if(wIndex != EP_CONTROL)
{
Usb_disable_stall_handshake();
Usb_reset_endpoint(wIndex);
Usb_reset_data_toggle();
}
Usb_select_endpoint(EP_CONTROL);
endpoint_status[wIndex] = 0x00;
Usb_ack_receive_setup();
Usb_send_control_in();
}
else
{
Usb_select_endpoint(EP_CONTROL);
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
}
else
{
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
}
}
