From 34ee41ee14e80b18269fbac3ca2735c355f20903 Mon Sep 17 00:00:00 2001
From: Alexandre Abadie <alexandre.abadie@inria.fr>
Date: Mon, 25 Mar 2019 17:24:26 +0100
Subject: [PATCH] boards/b-l072z-lrwan1: provide and configure rtt peripheral

---
 boards/b-l072z-lrwan1/Makefile.features     |  1 +
 boards/b-l072z-lrwan1/include/periph_conf.h | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/boards/b-l072z-lrwan1/Makefile.features b/boards/b-l072z-lrwan1/Makefile.features
index 5c03c66baa..1738d4c265 100644
--- a/boards/b-l072z-lrwan1/Makefile.features
+++ b/boards/b-l072z-lrwan1/Makefile.features
@@ -2,6 +2,7 @@
 FEATURES_PROVIDED += periph_dma
 FEATURES_PROVIDED += periph_i2c
 FEATURES_PROVIDED += periph_rtc
+FEATURES_PROVIDED += periph_rtt
 FEATURES_PROVIDED += periph_spi
 FEATURES_PROVIDED += periph_timer
 FEATURES_PROVIDED += periph_uart
diff --git a/boards/b-l072z-lrwan1/include/periph_conf.h b/boards/b-l072z-lrwan1/include/periph_conf.h
index 4db35af48f..95ec36a4b3 100644
--- a/boards/b-l072z-lrwan1/include/periph_conf.h
+++ b/boards/b-l072z-lrwan1/include/periph_conf.h
@@ -220,6 +220,17 @@ static const i2c_conf_t i2c_config[] = {
 #define I2C_NUMOF           (sizeof(i2c_config) / sizeof(i2c_config[0]))
 /** @} */
 
+/**
+ * @name    RTT configuration
+ *
+ * On the STM32Lx platforms, we always utilize the LPTIM1.
+ * @{
+ */
+#define RTT_NUMOF           (1)
+#define RTT_FREQUENCY       (1024U)             /* 32768 / 2^n */
+#define RTT_MAX_VALUE       (0x0000ffff)        /* 16-bit timer */
+/** @} */
+
 /**
  * @name    RTC configuration
  * @{