From 8da206bb5556d35d0c90b88b380e74801b4049fd Mon Sep 17 00:00:00 2001
From: Lisin Dmitriy <d.lisin@thirdpin.ru>
Date: Wed, 22 May 2019 15:23:41 +0300
Subject: IMPR: [systick] Add deinit to systick

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---
 cm3cpp_systick.cpp | 12 +++++++++++-
 cm3cpp_systick.h   |  1 +
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/cm3cpp_systick.cpp b/cm3cpp_systick.cpp
index 72ed3e7..3aca667 100644
--- a/cm3cpp_systick.cpp
+++ b/cm3cpp_systick.cpp
@@ -47,7 +47,7 @@ void CM3CPP_SYSTICK_INT_FUNC(void);
 #define CM3CPP_SYSTICK_INT_FUNC sys_tick_handler
 #endif
 
-volatile uint32_t counter;
+static volatile uint32_t counter;
 
 #if CM3CPP_ENABLE_CUSTOM_SYSTICK_SOURCE != 1
 void CM3CPP_SYSTICK_INT_FUNC(void)
@@ -96,6 +96,16 @@ void init(uint32_t clock_div)
 #endif
 }
 
+void deinit()
+{
+#if CM3CPP_ENABLE_CUSTOM_SYSTICK_SOURCE == 1
+    timer_disable_counter(CM3CPP_INT_SOURCE);
+#else
+    systick_interrupt_disable();
+    systick_counter_disable();
+#endif
+}
+
 uint32_t get_counter()
 {
 #if CM3CPP_ENABLE_CUSTOM_SYSTICK_SOURCE == 1
diff --git a/cm3cpp_systick.h b/cm3cpp_systick.h
index 54b06c1..91ae5ae 100644
--- a/cm3cpp_systick.h
+++ b/cm3cpp_systick.h
@@ -38,6 +38,7 @@ namespace cm3cpp {
 namespace systick {
 
 void init(uint32_t div = CM3CPP_SYSTICK_CLOCK_DIV);
+void deinit();
 uint32_t get_counter();
 void delay_systick(uint32_t ms);
 
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