From 4afb5984532236b4003780c67e32df27e2f12a83 Mon Sep 17 00:00:00 2001
From: Valentin Ochs <a@0au.de>
Date: Fri, 16 Jul 2021 21:22:13 +0200
Subject: [PATCH] Allow reinitializing USB

---
 usb.c | 10 +++++++---
 usb.h |  1 +
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/usb.c b/usb.c
index 633fa5d..41b2db5 100644
--- a/usb.c
+++ b/usb.c
@@ -314,15 +314,19 @@ void usb_setup() {
   }
 
   /* Initialize the device... */
+  usb_reinit();
+
+  /* And use interrupts instead of polling. */
+  // nvic_enable_irq(NVIC_OTG_FS_IRQ);
+}
+
+void usb_reinit() {
   g_usbd_dev = usbd_init(&otgfs_usb_driver, &dev, &config,
                          (char const * const *)usb_strings,
                          (sizeof usb_strings) / sizeof(usb_strings[0]),
                          usbd_control_buffer, sizeof(usbd_control_buffer));
 
   usbd_register_set_config_callback(g_usbd_dev, cdcacm_set_config);
-
-  /* And use interrupts instead of polling. */
-  // nvic_enable_irq(NVIC_OTG_FS_IRQ);
 }
 
 //void __attribute__((weak)) otg_fs_isr() { }
diff --git a/usb.h b/usb.h
index f9437dc..aa3ae49 100644
--- a/usb.h
+++ b/usb.h
@@ -6,6 +6,7 @@
 extern usbd_device *g_usbd_dev;
 
 void usb_setup(void);
+void usb_reinit(void);
 int usb_write_cdcacm(uint8_t acm, void *data, size_t len, int tries);
 
 #define ACM_NFC 1