From cd1063426ef3aeb928002ec5f2a2e0d8c8395210 Mon Sep 17 00:00:00 2001
From: Daniel Thompson <daniel@redfelineninja.org.uk>
Date: Mon, 20 Jan 2020 08:08:22 +0000
Subject: Makefile: Switch to pyocd for flashing

Using the mass storage device mode on Nitrogen leaves the board in an
odd state where the bootloader cannot properly load the payload.

diff --git a/Makefile b/Makefile
index 78cd191..b61009c 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,8 @@ dfu:
 	python3 -m nordicsemi dfu serial --package micropython.zip --port /dev/ttyACM0
 
 flash:
-	cp bootloader.hex /run/media/$(USER)/MBED
+	pyocd erase -t nrf52 --mass-erase
+	pyocd flash -t nrf52 bootloader.hex
 
 .PHONY: bootloader micropython
 
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