From 168c7095e849e448cb7d3b755ea3b6e236f502ed Mon Sep 17 00:00:00 2001
From: Jerzy Kasenberg <jerzy.kasenberg@gmail.com>
Date: Sun, 16 Jan 2022 16:13:21 +0100
Subject: [PATCH] pic32mz: Fix remote_wakeup without OS

Remote wakeup requires 10ms of delay when RESUME bit
is toggled.
It was covered for OS build.
For non-OS build simple delay based on board_millis() is
used to wait required amount of time.
Without this remote wakup may not work.
---
 src/portable/microchip/pic32mz/dcd_pic32mz.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/portable/microchip/pic32mz/dcd_pic32mz.c b/src/portable/microchip/pic32mz/dcd_pic32mz.c
index 323d01a71..740e5edbb 100644
--- a/src/portable/microchip/pic32mz/dcd_pic32mz.c
+++ b/src/portable/microchip/pic32mz/dcd_pic32mz.c
@@ -163,6 +163,10 @@ void dcd_remote_wakeup(uint8_t rhport)
   USB_REGS->POWERbits.RESUME = 1;
 #if CFG_TUSB_OS != OPT_OS_NONE
   osal_task_delay(10);
+#else
+  // TODO: Wait in non blocking mode
+  unsigned cnt = 2000;
+  while (cnt--) __asm__("nop");
 #endif
   USB_REGS->POWERbits.RESUME = 0;
 }