From bc16809d9cd58cc7c5cb7208a4267cf0165cbb6d Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Tue, 5 May 2020 12:10:15 +0200
Subject: [PATCH] sys/include/ztimer: add configuration header

---
 sys/include/ztimer/config.h | 121 ++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 sys/include/ztimer/config.h

diff --git a/sys/include/ztimer/config.h b/sys/include/ztimer/config.h
new file mode 100644
index 0000000000..89b467423e
--- /dev/null
+++ b/sys/include/ztimer/config.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2020 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License v2.1. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+/**
+ * @ingroup     sys_ztimer
+ * @{
+ *
+ * @file
+ * @brief       ztimer default configuration
+ *
+ *
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ */
+
+#ifndef ZTIMER_CONFIG_H
+#define ZTIMER_CONFIG_H
+
+#include "board.h"
+#include "periph_conf.h"
+
+#include "ztimer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * @brief   Use periph_timer as the base timer for ZTIMER_USEC
+ */
+#define CONFIG_ZTIMER_USEC_TYPE_PERIPH_TIMER (1)
+
+/* for ZTIMER_USEC, use xtimer configuration if available and no ztimer
+ * specific configuration is set. */
+#if CONFIG_ZTIMER_USEC_TYPE_PERIPH_TIMER
+#  ifndef CONFIG_ZTIMER_USEC_DEV
+#    ifdef XTIMER_DEV
+#      define CONFIG_ZTIMER_USEC_DEV            XTIMER_DEV
+#    endif
+#  endif
+#  ifndef CONFIG_ZTIMER_USEC_BASE_FREQ
+#    ifdef XTIMER_HZ
+#      define CONFIG_ZTIMER_USEC_BASE_FREQ      XTIMER_HZ
+#    endif
+#  endif
+#  ifndef CONFIG_ZTIMER_USEC_WIDTH
+#    ifdef XTIMER_WIDTH
+#      define CONFIG_ZTIMER_USEC_WIDTH          XTIMER_WIDTH
+#    endif
+#  endif
+#endif
+
+/**
+ * @brief   Default timer device for ZTIMER_USEC
+ */
+#ifndef CONFIG_ZTIMER_USEC_DEV
+#define CONFIG_ZTIMER_USEC_DEV          (TIMER_DEV(0))
+#endif
+
+/**
+ * @brief   ZTIMER_USEC optimal minimum value for ztimer_set()
+ *
+ * When scheduling an ISR every timer will be set to:
+ * max(CONFIG_ZTIMER_USEC_MIN, value).
+ *
+ * This value only applies if the counter object used for ZTIMER_USEC is
+ * periph_timer. This is supposed to be defined per-device in e.g., board.h.
+ */
+#ifndef CONFIG_ZTIMER_USEC_MIN
+#define CONFIG_ZTIMER_USEC_MIN              (10)
+#endif
+
+/**
+   @brief   ZTIMER_USEC counter object width
+ */
+#ifndef CONFIG_ZTIMER_USEC_WIDTH
+#  if (TIMER_0_MAX_VALUE) == 0xffff
+#    define CONFIG_ZTIMER_USEC_WIDTH        (16)
+#  elif (TIMER_0_MAX_VALUE) == 0xffffffUL
+#    define CONFIG_ZTIMER_USEC_WIDTH        (24)
+#  else
+#    define CONFIG_ZTIMER_USEC_WIDTH        (32)
+#  endif
+#endif
+
+/**
+ * @brief   The frequency of ZTIMER_USEC_BASE (base ztimer for ZTIMER_USEC)
+ */
+#ifndef CONFIG_ZTIMER_USEC_BASE_FREQ
+#define CONFIG_ZTIMER_USEC_BASE_FREQ    (1000000LU)
+#endif
+
+/**
+ * @brief   The frequency of ZTIMER_MSEC_BASE (base ztimer for ZTIMER_MSEC)
+ */
+#ifdef MODULE_ZTIMER_PERIPH_RTT
+#  define CONFIG_ZTIMER_MSEC_BASE_FREQ   (RTT_FREQUENCY)
+# else
+#  define CONFIG_ZTIMER_MSEC_BASE_FREQ   (CONFIG_ZTIMER_USEC_BASE_FREQ)
+#endif  /* MODULE_ZTIMER_PERIPH_RTT */
+
+/**
+ * @brief   The minimum pm mode required for ZTIMER_USEC to run.
+ */
+#ifndef CONFIG_ZTIMER_USEC_REQUIRED_PM_MODE
+#define CONFIG_ZTIMER_USEC_REQUIRED_PM_MODE ZTIMER_CLOCK_NO_REQUIRED_PM_MODE
+#endif
+
+/**
+ * @brief   The minimum pm mode required for ZTIMER_MSEC to run
+ */
+#ifndef CONFIG_ZTIMER_MSEC_REQUIRED_PM_MODE
+#define CONFIG_ZTIMER_MSEC_REQUIRED_PM_MODE ZTIMER_CLOCK_NO_REQUIRED_PM_MODE
+#endif
+
+#endif /* ZTIMER_CONFIG_H */
+/** @} */