Diff: targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/gpio_api.c

Revision:

181:57724642e740

Parent:

170:19eb464bc2be

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/gpio_api.c	Fri Feb 16 16:09:33 2018 +0000
@@ -0,0 +1,75 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * 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 "mbed_assert.h"
+#include "gpio_api.h"
+#include "pinmap.h"
+#include "fsl_gpio.h"
+
+uint32_t gpio_set(PinName pin)
+{
+    MBED_ASSERT(pin != (PinName)NC);
+    pin_function(pin, 0);
+
+    return (1 << ((int)pin & 0x1F));
+}
+
+void gpio_init(gpio_t *obj, PinName pin)
+{
+    obj->pin = pin;
+    if (pin == (PinName)NC)
+        return;
+
+    pin_function(pin, 0);
+}
+
+void gpio_mode(gpio_t *obj, PinMode mode)
+{
+    pin_mode(obj->pin, mode);
+}
+
+void gpio_dir(gpio_t *obj, PinDirection direction)
+{
+    MBED_ASSERT(obj->pin != (PinName)NC);
+    uint32_t pin_number = obj->pin & 0x1F;
+    uint8_t port_number = obj->pin / 32;
+
+    switch (direction) {
+        case PIN_INPUT:
+            GPIO->DIR[port_number] &= ~(1U << pin_number);
+            break;
+        case PIN_OUTPUT:
+            GPIO->DIR[port_number] |= (1U << pin_number);
+            break;
+    }
+}
+
+void gpio_write(gpio_t *obj, int value)
+{
+    MBED_ASSERT(obj->pin != (PinName)NC);
+    uint32_t pin_number = obj->pin & 0x1F;
+    uint8_t port_number = obj->pin / 32;
+
+    GPIO_WritePinOutput(GPIO, port_number, pin_number, value);
+}
+
+int gpio_read(gpio_t *obj)
+{
+    MBED_ASSERT(obj->pin != (PinName)NC);
+    uint32_t pin_number = obj->pin & 0x1F;
+    uint8_t port_number = obj->pin / 32;
+
+    return (int)GPIO_ReadPinInput(GPIO, port_number, pin_number);
+}