Diff: targets/TARGET_Freescale/TARGET_KSDK2_MCUS/api/gpio_api.c

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Freescale/TARGET_KSDK2_MCUS/api/gpio_api.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,74 @@
+/* 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_port.h"
+#include "fsl_gpio.h"
+
+static GPIO_Type * const gpio_addrs[] = GPIO_BASE_PTRS;
+
+uint32_t gpio_set(PinName pin) {
+    MBED_ASSERT(pin != (PinName)NC);
+    uint32_t pin_num = pin & 0xFF;
+
+    pin_function(pin, (int)kPORT_MuxAsGpio);
+    return 1 << pin_num;
+}
+
+void gpio_init(gpio_t *obj, PinName pin) {
+    obj->pin = pin;
+    if (pin == (PinName)NC)
+        return;
+
+    pin_function(pin, (int)kPORT_MuxAsGpio);
+}
+
+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 port = obj->pin >> GPIO_PORT_SHIFT;
+    uint32_t pin_num = obj->pin & 0xFF;
+    GPIO_Type *base = gpio_addrs[port];
+
+    switch (direction) {
+        case PIN_INPUT:
+            base->PDDR &= ~(1U << pin_num);
+            break;
+        case PIN_OUTPUT:
+            base->PDDR |= (1U << pin_num);
+            break;
+    }
+}
+
+void gpio_write(gpio_t *obj, int value) {
+    MBED_ASSERT(obj->pin != (PinName)NC);
+    uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
+    uint32_t pin = obj->pin & 0xFF;
+
+    GPIO_WritePinOutput(gpio_addrs[port], pin, value);
+}
+
+int gpio_read(gpio_t *obj) {
+    MBED_ASSERT(obj->pin != (PinName)NC);
+    uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
+    uint32_t pin = obj->pin & 0xFF;
+
+    return (int)GPIO_ReadPinInput(gpio_addrs[port], pin);
+}