stmhal: Rename mp_const_vcp_interrupt to mp_kbd_exception.

mp_kbd_exception is now considered the standard variable name to hold the
singleton KeyboardInterrupt exception.

This patch also moves the creation of this object from pyb_usb_init() to
main().

1 files changed, 3 insertions, 5 deletions

diff --git a/stmhal/usb.c b/stmhal/usb.c
index b0a66ef9b..591cb321a 100644
--- a/stmhal/usb.c
+++ b/stmhal/usb.c
@@ -96,9 +96,7 @@ const mp_obj_tuple_t pyb_usb_hid_keyboard_obj = {
 };
 
 void pyb_usb_init0(void) {
-    // create an exception object for interrupting by VCP
-    MP_STATE_PORT(mp_const_vcp_interrupt) = mp_obj_new_exception(&mp_type_KeyboardInterrupt);
-    USBD_CDC_SetInterrupt(-1, MP_STATE_PORT(mp_const_vcp_interrupt));
+    USBD_CDC_SetInterrupt(-1, MP_STATE_PORT(mp_kbd_exception));
     MP_STATE_PORT(pyb_hid_report_desc) = MP_OBJ_NULL;
 }
 
@@ -146,9 +144,9 @@ bool usb_vcp_is_enabled(void) {
 void usb_vcp_set_interrupt_char(int c) {
     if (pyb_usb_flags & PYB_USB_FLAG_DEV_ENABLED) {
         if (c != -1) {
-            mp_obj_exception_clear_traceback(MP_STATE_PORT(mp_const_vcp_interrupt));
+            mp_obj_exception_clear_traceback(MP_STATE_PORT(mp_kbd_exception));
         }
-        USBD_CDC_SetInterrupt(c, MP_STATE_PORT(mp_const_vcp_interrupt));
+        USBD_CDC_SetInterrupt(c, MP_STATE_PORT(mp_kbd_exception));
     }
 }