tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/gpio_api.c

   1 /* mbed Microcontroller Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 #include "mbed_assert.h"
  17 #include "gpio_api.h"
  18 #include "pinmap.h"
  19 #include "fsl_port_hal.h"
  20 #include "fsl_gpio_hal.h"
  21 #include "fsl_sim_hal.h"
  22 #include "fsl_clock_manager.h"
  23
  24 uint32_t gpio_set(PinName pin) {
  25     MBED_ASSERT(pin != (PinName)NC);
  26     uint32_t pin_num = pin & 0xFF;
  27
  28     pin_function(pin, (int)kPortMuxAsGpio);
  29     return 1 << pin_num;
  30 }
  31
  32 void gpio_init(gpio_t *obj, PinName pin) {
  33     obj->pin = pin;
  34     if (pin == (PinName)NC)
  35         return;
  36
  37     uint32_t port = pin >> GPIO_PORT_SHIFT;
  38     uint32_t port_addrs[] = PORT_BASE_ADDRS;
  39     uint32_t pin_num = pin & 0xFF;
  40     CLOCK_SYS_EnablePortClock(port);
  41     PORT_HAL_SetMuxMode(port_addrs[port], pin_num, kPortMuxAsGpio);
  42 }
  43
  44 void gpio_mode(gpio_t *obj, PinMode mode) {
  45     pin_mode(obj->pin, mode);
  46 }
  47
  48 void gpio_dir(gpio_t *obj, PinDirection direction) {
  49     MBED_ASSERT(obj->pin != (PinName)NC);
  50     uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
  51     uint32_t gpio_addrs[] = GPIO_BASE_ADDRS;
  52     uint32_t pin_num = obj->pin & 0xFF;
  53
  54     switch (direction) {
  55         case PIN_INPUT:
  56             GPIO_HAL_SetPinDir(gpio_addrs[port], pin_num, kGpioDigitalInput);
  57             break;
  58         case PIN_OUTPUT:
  59             GPIO_HAL_SetPinDir(gpio_addrs[port], pin_num, kGpioDigitalOutput);
  60             break;
  61     }
  62 }