fixed drv_gpio bug

Hehesheng · Hehesheng · commit 4fe5ce75c464 · 2020-01-14T17:06:18.000+08:00
diff --git a/bsp/k210/driver/drv_gpio.c b/bsp/k210/driver/drv_gpio.c
@@ -257,7 +257,7 @@ const static struct rt_pin_ops drv_pin_ops =
 int rt_hw_pin_init(void)
 {
     rt_err_t ret = RT_EOK;
-    memset(pin_alloc_table, 0, sizeof pin_alloc_table);
+    memset(pin_alloc_table, -1, sizeof pin_alloc_table);
     free_pin = GPIO_ALLOC_START;
     ret = rt_device_pin_register("pin", &drv_pin_ops, RT_NULL);
 

Original file line number	Diff line number	Diff line change
`@@ -257,7 +257,7 @@ const static struct rt_pin_ops drv_pin_ops =`
`257`	`257`	`int rt_hw_pin_init(void)`
`258`	`258`	`{`
`259`	`259`	`rt_err_t ret = RT_EOK;`
`260`		`- memset(pin_alloc_table, 0, sizeof pin_alloc_table);`
	`260`	`+ memset(pin_alloc_table, -1, sizeof pin_alloc_table);`
`261`	`261`	`free_pin = GPIO_ALLOC_START;`
`262`	`262`	`ret = rt_device_pin_register("pin", &drv_pin_ops, RT_NULL);`
`263`	`263`