[bsp] update delay function

bsp/stm32f429-apollo/drivers/drv_eth.c

@@ -117,32 +117,14 @@ void HAL_ETH_ErrorCallback(ETH_HandleTypeDef *heth)
 {
     rt_kprintf("eth err\n");
 }
-static void delay_ms(rt_uint32_t ms)
-{
-	if (ms < 1000 / RT_TICK_PER_SECOND) 
-	{
-		rt_thread_delay(1);
-	} 
-	else 
-	{
-		rt_thread_delay(rt_tick_from_millisecond(ms));
-	}
-}
 
 static void phy_pin_reset(void)
 {
-	rt_base_t level;
-    
-    extern void delay_ms(rt_uint32_t nms);
-
-	level = rt_hw_interrupt_disable();
-    
 	rt_pcf8574_write_bit(ETH_RESET_IO, 1);
-	delay_ms(100);
-	rt_pcf8574_write_bit(ETH_RESET_IO, 0);
-	delay_ms(100);
+	rt_thread_delay(RT_TICK_PER_SECOND / 10);
     
-	rt_hw_interrupt_enable(level);
+	rt_pcf8574_write_bit(ETH_RESET_IO, 0);
+	rt_thread_delay(RT_TICK_PER_SECOND / 10);
 }
 #ifdef DEBUG
 FINSH_FUNCTION_EXPORT(phy_pin_reset, phy hardware reset);