From ed3a716ffdd1ac4cdedf9881da3b1dabf1a2f737 Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Wed, 7 Aug 2019 08:58:47 +0200
Subject: [PATCH] boards/common/nucleo: increase XTIMER_BACKOFF for STM32F1
 boards

- Boards using stm32f103xx use the same custom config for xtimer
  which relies on the same underlying hardware timers that hang
  when sleeping for <20us so spin when approaching that limit.
---
 boards/blackpill/include/board.h            | 2 +-
 boards/bluepill/include/board.h             | 2 +-
 boards/common/nucleo/include/board_nucleo.h | 2 +-
 boards/maple-mini/include/board.h           | 2 +-
 boards/opencm904/include/board.h            | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/boards/blackpill/include/board.h b/boards/blackpill/include/board.h
index 9c07fcfe7098..97d6b92651e3 100644
--- a/boards/blackpill/include/board.h
+++ b/boards/blackpill/include/board.h
@@ -67,7 +67,7 @@ void board_init(void);
  * @{
  */
 #define XTIMER_WIDTH        (16)
-#define XTIMER_BACKOFF      5
+#define XTIMER_BACKOFF      (19)
 /** @} */
 
 #ifdef __cplusplus
diff --git a/boards/bluepill/include/board.h b/boards/bluepill/include/board.h
index 48c4b4c283be..626d1e6eca5c 100644
--- a/boards/bluepill/include/board.h
+++ b/boards/bluepill/include/board.h
@@ -61,7 +61,7 @@ void board_init(void);
  * @{
  */
 #define XTIMER_WIDTH        (16)
-#define XTIMER_BACKOFF      5
+#define XTIMER_BACKOFF      (19)
 /** @} */
 
 #ifdef __cplusplus
diff --git a/boards/common/nucleo/include/board_nucleo.h b/boards/common/nucleo/include/board_nucleo.h
index 7531d8f9e469..1b8a7b7a0f17 100644
--- a/boards/common/nucleo/include/board_nucleo.h
+++ b/boards/common/nucleo/include/board_nucleo.h
@@ -44,7 +44,7 @@ extern "C" {
 
 #if defined(CPU_FAM_STM32F1)
 #define XTIMER_WIDTH                (16)
-#define XTIMER_BACKOFF              (5)
+#define XTIMER_BACKOFF              (19)
 #endif
 
 #if defined(CPU_FAM_STM32L1)
diff --git a/boards/maple-mini/include/board.h b/boards/maple-mini/include/board.h
index cfd187e19c19..924075b6caa3 100644
--- a/boards/maple-mini/include/board.h
+++ b/boards/maple-mini/include/board.h
@@ -29,7 +29,7 @@ extern "C" {
  * @{
  */
 #define XTIMER_WIDTH        (16)
-#define XTIMER_BACKOFF      5
+#define XTIMER_BACKOFF      (19)
 /** @} */
 
 /**
diff --git a/boards/opencm904/include/board.h b/boards/opencm904/include/board.h
index a03a5b4616cd..f927ce4cede2 100644
--- a/boards/opencm904/include/board.h
+++ b/boards/opencm904/include/board.h
@@ -29,7 +29,7 @@ extern "C" {
  * @{
  */
 #define XTIMER_WIDTH        (16)
-#define XTIMER_BACKOFF      5
+#define XTIMER_BACKOFF      (19)
 /** @} */
 
 /**