From dd910a7805153c6421bc58dfa7c7a626474151b4 Mon Sep 17 00:00:00 2001
From: FuChao <fuc@vangotech.com>
Date: Wed, 8 Sep 2021 13:03:25 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0delay=E7=9A=84=E5=AE=9E?=
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增加作者信息
---
 bsp/Vango_V85xx/drivers/board.c    | 31 ++++++++++++++++++++++++++++++
 bsp/Vango_V85xx/drivers/drv_gpio.c |  2 +-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/bsp/Vango_V85xx/drivers/board.c b/bsp/Vango_V85xx/drivers/board.c
index 5175269820..ca016a00df 100644
--- a/bsp/Vango_V85xx/drivers/board.c
+++ b/bsp/Vango_V85xx/drivers/board.c
@@ -6,6 +6,8 @@
  * Change Logs:
  * Date           Author            Notes
  * 2021-01-04     iysheng           first version
+ * 2021-09-07     idk500            suit for Vango V85xx
+ * 2021-09-08     ZhuXW             add delay function
  */
 
 #include <stdint.h>
@@ -75,4 +77,33 @@ void rt_hw_board_init()
 #endif
 }
 
+void rt_hw_us_delay(rt_uint32_t us)
+{
+    rt_uint32_t ticks;
+    rt_uint32_t told, tnow, tcnt = 0;
+    rt_uint32_t reload = SysTick->LOAD;
+
+    ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
+    told = SysTick->VAL;
+    while (1)
+    {
+        tnow = SysTick->VAL;
+        if (tnow != told)
+        {
+            if (tnow < told)
+            {
+                tcnt += told - tnow;
+            }
+            else
+            {
+                tcnt += reload - tnow + told;
+            }
+            told = tnow;
+            if (tcnt >= ticks)
+            {
+                break;
+            }
+        }
+    }
+}
 /*@}*/
diff --git a/bsp/Vango_V85xx/drivers/drv_gpio.c b/bsp/Vango_V85xx/drivers/drv_gpio.c
index 8250a11bab..abfc06c63e 100644
--- a/bsp/Vango_V85xx/drivers/drv_gpio.c
+++ b/bsp/Vango_V85xx/drivers/drv_gpio.c
@@ -206,7 +206,7 @@ const static struct rt_pin_ops _v85xx_pin_ops =
     v85xx_pin_mode,
     v85xx_pin_write,
     v85xx_pin_read,
-    v85xx_pin_get,
+    // v85xx_pin_get,
 };
 
 rt_inline void pin_irq_hdr(int irqno)
-- 
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