Diff: targets/TARGET_NUVOTON/TARGET_M451/gpio_api.c

Revision:

0:098463de4c5d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NUVOTON/TARGET_M451/gpio_api.c	Wed Jan 25 20:34:15 2017 +0000
@@ -0,0 +1,86 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2015-2016 Nuvoton
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "gpio_api.h"
+#include "mbed_assert.h"
+#include "pinmap.h"
+#include "mbed_error.h"
+#include "PeripheralPins.h"
+
+uint32_t gpio_set(PinName pin)
+{
+    if (pin == (PinName) NC) {
+        return 0;
+    }
+    
+    uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
+    
+#if 1
+    pin_function(pin, 0 << NU_MFP_POS(pin_index));
+#else
+    pinmap_pinout(pin, PinMap_GPIO);
+#endif
+
+    return (uint32_t)(1 << pin_index);    // Return the pin mask
+}
+
+void gpio_init(gpio_t *obj, PinName pin)
+{
+    obj->pin = pin;
+    
+    if (obj->pin == (PinName) NC) {
+        return;
+    }
+
+    obj->mask = gpio_set(pin);
+}
+
+void gpio_mode(gpio_t *obj, PinMode mode)
+{
+    if (obj->pin == (PinName) NC) {
+        return;
+    }
+    
+    pin_mode(obj->pin, mode);
+}
+
+void gpio_dir(gpio_t *obj, PinDirection direction)
+{
+    if (obj->pin == (PinName) NC) {
+        return;
+    }
+    
+    uint32_t pin_index = NU_PINNAME_TO_PIN(obj->pin);
+    uint32_t port_index = NU_PINNAME_TO_PORT(obj->pin);
+    GPIO_T *gpio_base = NU_PORT_BASE(port_index);
+    
+    uint32_t mode_intern = GPIO_MODE_INPUT;
+    
+    switch (direction) {
+        case PIN_INPUT:
+            mode_intern = GPIO_MODE_INPUT;
+            break;
+        
+        case PIN_OUTPUT:
+            mode_intern = GPIO_MODE_OUTPUT;
+            break;
+            
+        default:
+            return;
+    }
+    
+    GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
+}