From 803458ad8a959508aa32b7dcf193b34c878014c8 Mon Sep 17 00:00:00 2001
From: ThunderSoft_mbed_os <44602518+ThunderSoft123@users.noreply.github.com>
Date: Tue, 27 Nov 2018 09:48:31 +0800
Subject: [PATCH] Update us_ticker.c

---
 targets/TARGET_TT/TARGET_TT_M3HQ/us_ticker.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/targets/TARGET_TT/TARGET_TT_M3HQ/us_ticker.c b/targets/TARGET_TT/TARGET_TT_M3HQ/us_ticker.c
index b632626f9e..2555e2101b 100644
--- a/targets/TARGET_TT/TARGET_TT_M3HQ/us_ticker.c
+++ b/targets/TARGET_TT/TARGET_TT_M3HQ/us_ticker.c
@@ -89,5 +89,13 @@ void us_ticker_clear_interrupt(void)
 
 void us_ticker_free(void)
 {
-
+    TSB_T32A0->RUNC  = (T32A_RUN_DISABLE | T32A_COUNT_STOP);
+    us_ticker_inited = false;
+    TSB_T32A0->STC   = 0x0F;
+    // Clear Pending interrupt in NVIC
+    NVIC_ClearPendingIRQ(INTT32A00C_IRQn);
+    // Disable interrupt in NVIC
+    NVIC_DisableIRQ(INTT32A00C_IRQn);
+    // Disable Clock.
+    TSB_CG_FSYSENA_IPENA24 = 0;
 }