added bootloader project - currently only able to be enumerated by USB host but doesn't do anything else yet

2019-08-10 15:30:49 -04:00
parent 402eaed8e6
commit e137112603
7 changed files with 926 additions and 0 deletions
--- a/bootloader/src/usb_events.c
+++ b/bootloader/src/usb_events.c
@@ -0,0 +1,84 @@
+#include "usb.h"
+#include "usb_device_hid.h"
+
+/*******************************************************************
+ * Function:        bool USER_USB_CALLBACK_EVENT_HANDLER(
+ *                        USB_EVENT event, void *pdata, uint16_t size)
+ *
+ * PreCondition:    None
+ *
+ * Input:           USB_EVENT event - the type of event
+ *                  void *pdata - pointer to the event data
+ *                  uint16_t size - size of the event data
+ *
+ * Output:          None
+ *
+ * Side Effects:    None
+ *
+ * Overview:        This function is called from the USB stack to
+ *                  notify a user application that a USB event
+ *                  occured.  This callback is in interrupt context
+ *                  when the USB_INTERRUPT option is selected.
+ *
+ * Note:            None
+ *******************************************************************/
+bool USER_USB_CALLBACK_EVENT_HANDLER(USB_EVENT event, void *pdata, uint16_t size)
+{
+    switch( (int) event )
+    {
+        case EVENT_TRANSFER:
+            break;
+
+        case EVENT_SOF:
+            break;
+
+        case EVENT_SUSPEND:
+            //Call the hardware platform specific handler for suspend events for
+            //possible further action (like optionally going reconfiguring the application
+            //for lower power states and going to sleep during the suspend event).  This
+            //would normally be done in USB compliant bus powered applications, although
+            //no further processing is needed for purely self powered applications that
+            //don't consume power from the host.
+            //asm("SLEEP"); // sleep right now, execution starts on next line when woken up
+            // we have been woken up. if the watchdog was the cause go back to sleep
+            //while ((PIR2bits.USBIF == 0) && (RCONbits.TO == 0))
+            //{
+            //    asm("SLEEP");
+            //}
+            break;
+
+        case EVENT_RESUME:
+            // restore any hardware states (i.e. IO pin config) that were changed on suspend
+            break;
+
+        case EVENT_CONFIGURED:
+            // When the device is configured, we should (re)initialize our state variables
+            USBEnableEndpoint(1, USB_IN_ENABLED|USB_HANDSHAKE_ENABLED|USB_DISALLOW_SETUP);
+            break;
+
+        case EVENT_SET_DESCRIPTOR:
+            break;
+
+        case EVENT_EP0_REQUEST:
+            /* We have received a non-standard USB request.  The HID driver
+             * needs to check to see if the request was for it. */
+            USBCheckHIDRequest();
+            break;
+
+        case EVENT_BUS_ERROR:
+            break;
+
+        case EVENT_TRANSFER_TERMINATED:
+            break;
+
+        default:
+            break;
+    }
+    return true;
+}
+
+
+/*******************************************************************************
+ End of File
+*/
+