From ed0451bc28dc5ffcc3031bf9918a25e9fb8db2f7 Mon Sep 17 00:00:00 2001
From: Purdea Andrei <andrei@purdea.ro>
Date: Wed, 16 Jun 2021 07:20:44 +0300
Subject: Make atmel-dfu and chibios-dfu flashing behave more like caterina
 flashing. (#12552)

This commit makes atmel-dfu and chibios-dfu bootloaders retry to detect the bootloader
every 0,5 seconds (now configurable via the BOOTLOADER_RETRY_TIME makefile variable),
and a period is printed after every try. This is a much more pleasant behaviour than
the 5s retry timeout.
---
 tmk_core/chibios.mk | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

(limited to 'tmk_core/chibios.mk')

diff --git a/tmk_core/chibios.mk b/tmk_core/chibios.mk
index cdf9ba6495..97299b7d32 100644
--- a/tmk_core/chibios.mk
+++ b/tmk_core/chibios.mk
@@ -341,10 +341,15 @@ ST_LINK_CLI ?= st-link_cli
 ST_FLASH ?= st-flash
 
 define EXEC_DFU_UTIL
-	until $(DFU_UTIL) -l | grep -q "Found DFU"; do\
-		printf "$(MSG_BOOTLOADER_NOT_FOUND)" ;\
-		sleep 5 ;\
-	done
+	if ! $(DFU_UTIL) -l | grep -q "Found DFU"; then \
+		printf "$(MSG_BOOTLOADER_NOT_FOUND_QUICK_RETRY)" ;\
+		sleep $(BOOTLOADER_RETRY_TIME) ;\
+		while ! $(DFU_UTIL) -l | grep -q "Found DFU"; do \
+			printf "." ;\
+			sleep $(BOOTLOADER_RETRY_TIME) ;\
+		done ;\
+		printf "\n" ;\
+	fi
 	$(DFU_UTIL) $(DFU_ARGS) -D $(BUILD_DIR)/$(TARGET).bin
 endef
 
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