From 8c23f87c5147f2a25784bc4501b40a5f7150b1f1 Mon Sep 17 00:00:00 2001
From: Ryan <fauxpark@gmail.com>
Date: Fri, 6 May 2022 22:18:03 +1000
Subject: [PATCH] Ensure .hex file output for ARM Teensys (#17014)

---
 builddefs/bootloader.mk | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/builddefs/bootloader.mk b/builddefs/bootloader.mk
index 226213297e7..1a53bfa6637 100644
--- a/builddefs/bootloader.mk
+++ b/builddefs/bootloader.mk
@@ -97,12 +97,18 @@ ifeq ($(strip $(BOOTLOADER)), halfkay)
     OPT_DEFS += -DBOOTLOADER_HALFKAY
     BOOTLOADER_TYPE = halfkay
 
+    # Teensy 2.0
     ifeq ($(strip $(MCU)), atmega32u4)
         BOOTLOADER_SIZE = 512
     endif
+    # Teensy 2.0++
     ifeq ($(strip $(MCU)), at90usb1286)
         BOOTLOADER_SIZE = 1024
     endif
+    # Teensy LC, 3.x
+    ifneq (,$(filter $(MCU_ORIG), MKL26Z64 MK20DX128 MK20DX256 MK66FX1M0))
+        FIRMWARE_FORMAT = hex
+    endif
 endif
 ifeq ($(strip $(BOOTLOADER)), caterina)
     OPT_DEFS += -DBOOTLOADER_CATERINA