mbed library sources. Supersedes mbed-src.
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targets/TARGET_Atmel/TARGET_SAM_CortexM4/gpio_api.c
- Committer:
- <>
- Date:
- 2016-10-28
- Revision:
- 149:156823d33999
- Parent:
- targets/hal/TARGET_Atmel/TARGET_SAM_CortexM4/gpio_api.c@ 107:414e9c822e99
File content as of revision 149:156823d33999:
/* mbed Microcontroller Library * Copyright (c) 2006-2015 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 "PinNames.h" #include "gpio_object.h" #include "gpio_api.h" #include "compiler.h" #include "ioport.h" extern uint8_t g_sys_init; uint32_t gpio_set(PinName pin) { MBED_ASSERT(pin != (PinName)NC); return (1UL << (pin % 32)); } void gpio_init(gpio_t *obj, PinName pin) { MBED_ASSERT(pin != (PinName)NC); if (g_sys_init == 0) { sysclk_init(); system_board_init(); g_sys_init = 1; } obj->pin = pin; ioport_set_pin_dir(pin, IOPORT_DIR_INPUT); ioport_set_pin_mode(pin, IOPORT_MODE_PULLUP); } void gpio_mode(gpio_t *obj, PinMode mode) { MBED_ASSERT(obj->pin != (PinName)NC); obj->mode = mode; switch (mode) { case PullNone : ioport_set_pin_mode(obj->pin, IOPORT_MODE_OPEN_DRAIN); break; case PullUp: ioport_set_pin_mode(obj->pin, IOPORT_MODE_PULLUP); break; case PullDown: ioport_set_pin_mode(obj->pin, IOPORT_MODE_PULLDOWN); break; } } void gpio_dir(gpio_t *obj, PinDirection direction) { MBED_ASSERT(obj->pin != (PinName)NC); obj->direction = direction; switch (direction) { case PIN_INPUT : ioport_set_pin_dir(obj->pin, IOPORT_DIR_INPUT); break; case PIN_OUTPUT: ioport_set_pin_dir(obj->pin, IOPORT_DIR_OUTPUT); break; case PIN_INPUT_OUTPUT: ioport_set_pin_dir(obj->pin, IOPORT_DIR_OUTPUT); break; } }