Diff: gpio_api.c

Revision:

0:e4d670b91a9a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gpio_api.c	Wed Mar 23 21:26:50 2016 +0000
@@ -0,0 +1,62 @@
+/* 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_hal.h"
+#include "fsl_gpio_hal.h"
+#include "fsl_sim_hal.h"
+#include "fsl_clock_manager.h"
+
+uint32_t gpio_set(PinName pin) {
+    MBED_ASSERT(pin != (PinName)NC);
+    uint32_t pin_num = pin & 0xFF;
+
+    pin_function(pin, (int)kPortMuxAsGpio);
+    return 1 << pin_num;
+}
+
+void gpio_init(gpio_t *obj, PinName pin) {
+    obj->pin = pin;
+    if (pin == (PinName)NC)
+        return;
+
+    uint32_t port = pin >> GPIO_PORT_SHIFT;
+    uint32_t port_addrs[] = PORT_BASE_ADDRS;
+    uint32_t pin_num = pin & 0xFF;
+    CLOCK_SYS_EnablePortClock(port);
+    PORT_HAL_SetMuxMode(port_addrs[port], pin_num, kPortMuxAsGpio);
+}
+
+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 gpio_addrs[] = GPIO_BASE_ADDRS;
+    uint32_t pin_num = obj->pin & 0xFF;
+
+    switch (direction) {
+        case PIN_INPUT:
+            GPIO_HAL_SetPinDir(gpio_addrs[port], pin_num, kGpioDigitalInput);
+            break;
+        case PIN_OUTPUT:
+            GPIO_HAL_SetPinDir(gpio_addrs[port], pin_num, kGpioDigitalOutput);
+            break;
+    }
+}