From df31f0ce3406f27c04c0ab6a8b0bbdfe197a3ea5 Mon Sep 17 00:00:00 2001
From: Romain Goyet <romain.goyet@numworks.com>
Date: Wed, 6 Sep 2017 09:32:12 +0200
Subject: [PATCH] Improve the app_flash command

We now display a small inline tutorial, and wait for a device to be
connected
---
 build/platform.device.mak | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/build/platform.device.mak b/build/platform.device.mak
index b10ec2e4e..e55cb6666 100644
--- a/build/platform.device.mak
+++ b/build/platform.device.mak
@@ -12,4 +12,9 @@ EXE = elf
 
 .PHONY: %_flash
 %_flash: %.bin
-	dfu-util -i 0 -a 0 -s 0x08000000:leave -D $<
+	@echo "DFU     $@"
+	@echo "INFO    About to flash your device. Please plug your device to your computer"
+	@echo "        using an USB cable and press the RESET button the back of your device."
+	@until dfu-util -l | grep "Internal Flash" &> /dev/null; do sleep 1;done
+	@echo "DFU     $@"
+	@dfu-util -i 0 -a 0 -s 0x08000000:leave -D $<