diff options
Diffstat (limited to 'usb/otg/usb_task_host_only.c')
| -rw-r--r-- | usb/otg/usb_task_host_only.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/usb/otg/usb_task_host_only.c b/usb/otg/usb_task_host_only.c new file mode 100644 index 0000000..bdeed82 --- /dev/null +++ b/usb/otg/usb_task_host_only.c @@ -0,0 +1,287 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include <memories/Media.h>
+#include "main.h"
+#include <conf_usb.h>
+#include <utility/trace.h>
+#include <usb/common/core/USBConfigurationDescriptor.h>
+#include <usb/device/core/USBD.h>
+#include <usb/device/massstorage/MSDDriver.h>
+#include <usb/device/massstorage/MSDLun.h>
+#include <usb/device/core/USBDCallbacks.h>
+#include <usb/common/core/USBFeatureRequest.h>
+#include "otg_user_task.h"
+#include "usb_task.h"
+#include "usb/otg/usb_drv.h"
+#include "usb/otg/usb_host_task.h"
+
+//------------------------------------------------------------------------------
+// Definitions
+//------------------------------------------------------------------------------
+
+
+
+extern volatile unsigned int timer_set_counter;
+#define Timer16_select(...)
+#define Timer16_set_counter(value) timer_set_counter = value
+#define Timer16_get_counter_low() (unsigned char)timer_set_counter
+
+
+/// Returns the OTG features sent by the host by a SetFeature
+/// Allow also to clear the features (only on a bus Reset or Session End)
+#define Is_host_requested_hnp() (((otg_features_supported&USBFeatureRequest_OTG_B_HNP_ENABLE) != 0) ? TRUE : FALSE)
+#define Clear_otg_features_from_host() (otg_features_supported = 0)
+
+#define Set_otg_custom_timer(ep) // STUB: todo
+
+#define USB_MODE_UNDEFINED 0x00
+#define USB_MODE_HOST 0x01
+#define USB_MODE_DEVICE 0x02
+
+//------------------------------------------------------------------------------
+// Exported variables
+//------------------------------------------------------------------------------
+
+U8 otg_device_sessions;
+U8 b_uut_device_state;
+U16 otg_tb_srp_cpt;
+
+/// usb_connected is used to store USB events detected upon
+/// USB general interrupt subroutine
+/// Its value is managed by the following macros (See usb_task.h file)
+/// Usb_send_event(x)
+/// Usb_ack_event(x)
+/// Usb_clear_all_event()
+/// Is_usb_event(x)
+/// Is_not_usb_event(x)
+volatile U16 g_usb_event=0;
+
+
+///
+/// Private : (U8) private_sof_counter
+/// Incremented by host SOF interrupt subroutime
+/// This counter is used to detect timeout in host requests.
+/// It must not be modified by the user application tasks.
+////
+volatile U8 private_sof_counter=0;
+extern volatile S_pipe_int it_pipe_str[MAX_EP_NB];
+
+//------------------------------------------------------------------------------
+// Local Variables
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Internal Functions
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Initializes the USB process
+/// Depending on the mode supported (HOST/DEVICE/DUAL_ROLE) the function calls
+/// the coresponding USB mode initialization function
+//------------------------------------------------------------------------------
+void usb_task_init(void)
+{
+ // ---- REDUCED HOST ONLY USB MODE -----------------------------------------
+ //jcbUsb_force_host_mode();
+ usb_host_task_init();
+}
+
+
+//------------------------------------------------------------------------------
+/// Entry point of the USB mamnagement
+/// Depending on the USB mode supported (HOST/DEVICE/DUAL_ROLE) the function
+/// calls the coresponding USB management function
+//------------------------------------------------------------------------------
+void usb_task(void)
+{
+ // ---- REDUCED HOST ONLY USB MODE -----------------------------------------
+ usb_host_task();
+}
+
+
+
+//------------------------------------------------------------------------------
+/// USB interrupt subroutine
+///
+/// This function is called each time a USB interrupt occurs.
+/// The following USB DEVICE events are taken in charge:
+/// - VBus On / Off
+/// - Start Of Frame
+/// - Suspend
+/// - Wake-Up
+/// - Resume
+/// - Reset
+/// - Start of frame
+///
+/// The following USB HOST events are taken in charge:
+/// - Device connection
+/// - Device Disconnection
+/// - Start Of Frame
+/// - ID pin change
+/// - SOF (or Keep alive in low speed) sent
+/// - Wake up on USB line detected
+///
+/// The following USB HOST events are taken in charge:
+/// - HNP success (Role Exchange)
+/// - HNP failure (HNP Error)
+///
+/// For each event, the user can launch an action by completing
+/// the associate define (See conf_usb.h file to add action upon events)
+///
+/// Note: Only interrupts events that are enabled are processed
+//------------------------------------------------------------------------------
+void usb_general_interrupt(void)
+{
+ //TRACE_DEBUG("usb_general_interrupt\n\r");
+ U8 i;
+ U8 save_pipe_nb;
+
+ // ---------- HOST events management -----------------------------------
+ // ---------------------------------------------------------------------
+ // -----------------------------------------------------------------------
+ /// Host
+ // -----------------------------------------------------------------------
+ // - The device has been disconnected
+ if(Is_device_disconnection() && Is_host_device_disconnection_interrupt_enabled()) {
+ TRACE_DEBUG("device disconnect\n\r");
+ host_disable_all_pipe();
+ Host_ack_device_disconnection();
+ device_state=DEVICE_DISCONNECTED;
+ Usb_send_event(EVT_HOST_DISCONNECTION);
+ TRACE_INFO("Device disconnected\n\r");
+ Host_device_disconnection_action();
+ }
+
+ // -----------------------------------------------------------------------
+ /// Host
+ // -----------------------------------------------------------------------
+ // - Device connection
+ if(Is_device_connection() && Is_host_device_connection_interrupt_enabled()) {
+ TRACE_DEBUG("device connect\n\r");
+ Host_ack_device_connection();
+ host_disable_all_pipe();
+ Host_device_connection_action();
+ }
+
+ // -----------------------------------------------------------------------
+ /// Host
+ // -----------------------------------------------------------------------
+ // - Host Start of frame has been sent
+ if (Is_host_sof() && Is_host_sof_interrupt_enabled()) {
+ //TRACE_DEBUG_WP("_"); // host
+ Host_ack_sof();
+ Usb_send_event(EVT_HOST_SOF);
+ private_sof_counter++;
+
+ // delay timeout management for interrupt tranfer mode in host mode
+#if ((USB_HOST_PIPE_INTERRUPT_TRANSFER==ENABLE) && (TIMEOUT_DELAY_ENABLE==ENABLE))
+ if (private_sof_counter>=250) { // Count 1/4 sec
+ private_sof_counter=0;
+ for(i=0;i<MAX_EP_NB;i++) {
+ if(it_pipe_str[i].enable==ENABLE) {
+ save_pipe_nb=Host_get_selected_pipe();
+ Host_select_pipe(i);
+ if((++it_pipe_str[i].timeout>TIMEOUT_DELAY) && (Host_get_pipe_type()!=TYPE_INTERRUPT)) {
+ it_pipe_str[i].enable=DISABLE;
+ it_pipe_str[i].status=PIPE_DELAY_TIMEOUT;
+ Host_stop_pipe_interrupt(i);
+ if (is_any_interrupt_pipe_active()==FALSE) { // If no more transfer is armed
+ if (g_sav_int_sof_enable==FALSE) {
+ Host_disable_sof_interrupt();
+ }
+ }
+ it_pipe_str[i].handle(PIPE_DELAY_TIMEOUT,it_pipe_str[i].nb_byte_processed);
+ }
+ Host_select_pipe(save_pipe_nb);
+ }
+ }
+ }
+#endif // (USB_HOST_PIPE_INTERRUPT_TRANSFER==ENABLE) && (TIMEOUT_DELAY_ENABLE==ENABLE))
+ Host_sof_action();
+ }
+
+ // -----------------------------------------------------------------------
+ /// Host
+ // -----------------------------------------------------------------------
+ // - Host Wake-up has been received
+ if (Is_host_hwup() && Is_host_hwup_interrupt_enabled()) {
+ TRACE_DEBUG("Host wake up\n\r");
+ Host_disable_hwup_interrupt(); // Wake up interrupt should be disable host is now wake up !
+ Host_disable_remote_wakeup_interrupt();
+ // CAUTION HWUP can be cleared only when USB clock is active (not frozen)!
+ Usb_unfreeze_clock(); // Enable clock on USB interface
+ Host_enable_sof(); // start sending SOF
+ Host_ack_hwup(); // Clear HWUP interrupt flag
+ Host_ack_remote_wakeup();
+ Usb_send_event(EVT_HOST_HWUP); // Send software event
+ Usb_send_event(EVT_HOST_REMOTE_WAKEUP);
+ Host_hwup_action(); // Map custom action
+ Host_send_resume();
+ }
+
+ // -----------------------------------------------------------------------
+ /// Host
+ // -----------------------------------------------------------------------
+ // Remote Wake Up has been received
+ if (Is_host_remote_wakeup_interrupt_enabled() && Is_host_remote_wakeup()) {
+ TRACE_DEBUG("Remote wake up\n\r");
+ Host_disable_remote_wakeup_interrupt();
+ Host_disable_hwup_interrupt();
+ Host_ack_remote_wakeup();
+ Host_ack_hwup(); // Clear HWUP interrupt flag
+ Usb_unfreeze_clock(); // Enable clock on USB interface
+ Host_enable_sof(); // start sending SOF
+ Usb_send_event(EVT_HOST_REMOTE_WAKEUP);
+ Usb_send_event(EVT_HOST_HWUP); // Send software event
+ Host_send_resume();
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Message "OTG not supported"
+//------------------------------------------------------------------------------
+void otg_not_supported_device(void)
+{
+ TRACE_DEBUG("otg_not_supported_device\n\r");
+ Otg_send_event(EVT_OTG_DEV_UNSUPPORTED);
+}
+
+
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