Diff: targets/TARGET_NUVOTON/TARGET_M451/port_api.c

Revision:

149:156823d33999

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NUVOTON/TARGET_M451/port_api.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,99 @@
+/* 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 "port_api.h"
+#include "gpio_api.h"
+#include "pinmap.h"
+#include "mbed_error.h"
+
+#if DEVICE_PORTIN || DEVICE_PORTOUT || DEVICE_PORTINOUT
+
+PinName port_pin(PortName port, int pin_n)
+{
+    return (PinName) NU_PORT_N_PIN_TO_PINNAME(port, pin_n);
+}
+
+void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
+{
+    obj->port      = port;
+    obj->mask      = mask;
+    obj->direction = dir;
+
+    uint32_t i;
+    obj->direction = dir;
+    for (i = 0; i < GPIO_PIN_MAX; i++) {
+        if (obj->mask & (1 << i)) {
+            gpio_set(port_pin(port, i));
+        }
+    }
+    
+    port_dir(obj, dir);
+}
+
+void port_dir(port_t *obj, PinDirection dir)
+{
+    uint32_t i;
+    obj->direction = dir;
+    for (i = 0; i < GPIO_PIN_MAX; i++) {
+        if (obj->mask & (1 << i)) {
+            if (dir == PIN_OUTPUT) {
+                GPIO_SetMode(NU_PORT_BASE(obj->port), 1 << i, GPIO_MODE_OUTPUT);
+            } else { // PIN_INPUT
+                GPIO_SetMode(NU_PORT_BASE(obj->port), 1 << i, GPIO_MODE_INPUT);
+            }
+        }
+    }
+}
+
+void port_mode(port_t *obj, PinMode mode)
+{
+    uint32_t i;
+    
+    for (i = 0; i < GPIO_PIN_MAX; i++) {
+        if (obj->mask & (1 << i)) {
+            pin_mode(port_pin(obj->port, i), mode);
+        }
+    }
+}
+
+void port_write(port_t *obj, int value)
+{
+    uint32_t i;
+    uint32_t port_index = obj->port;
+    
+    for (i = 0; i < GPIO_PIN_MAX; i++) {
+        if (obj->mask & (1 << i)) {
+            GPIO_PIN_DATA(port_index, i) = (value & obj->mask) ? 1 : 0;
+        }
+    }
+}
+
+int port_read(port_t *obj)
+{
+    uint32_t i;
+    uint32_t port_index = obj->port;
+    int value = 0;
+    
+    for (i = 0; i < GPIO_PIN_MAX; i++) {
+        if (obj->mask & (1 << i)) {
+            value = value | (GPIO_PIN_DATA(port_index, i) << i);
+        }
+    }
+    
+    return value;
+}
+
+#endif