mbed library sources
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Diff: targets/hal/TARGET_Atmel/TARGET_SAM21/gpio_api.c
- Revision:
- 613:bc40b8d2aec4
- Parent:
- 612:fba1c7dc54c0
- Child:
- 614:9d86c2ae5de0
--- a/targets/hal/TARGET_Atmel/TARGET_SAM21/gpio_api.c Tue Aug 18 15:00:09 2015 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,94 +0,0 @@ -/* 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 "PinNames.h" -#include "gpio_object.h" -#include "gpio_api.h" -#include "compiler.h" -#include "port.h" - -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); - struct port_config pin_conf; - PortGroup *const port_base = (PortGroup*)port_get_group_from_gpio_pin(pin); - - obj->pin = pin; - if (pin == (PinName)NC) - return; - - obj->mask = gpio_set(pin); - port_get_config_defaults(&pin_conf); - obj->powersave = pin_conf.powersave; - obj->direction = PORT_PIN_DIR_INPUT; - obj->mode = PORT_PIN_PULL_UP; - port_pin_set_config(pin, &pin_conf); - - obj->OUTCLR = &port_base->OUTCLR.reg; - obj->OUTSET = &port_base->OUTSET.reg; - obj->IN = &port_base->IN.reg; - obj->OUT = &port_base->OUT.reg; -} - -void gpio_mode(gpio_t *obj, PinMode mode) -{ - MBED_ASSERT(obj->pin != (PinName)NC); - struct port_config pin_conf; - - obj->mode = mode; - pin_conf.direction = obj->direction; - pin_conf.powersave = obj->powersave; - switch (mode) { - case PullNone : - pin_conf.input_pull = PORT_PIN_PULL_NONE; - break; - case PullUp: - pin_conf.input_pull = PORT_PIN_PULL_UP; - break; - case PullDown: - pin_conf.input_pull = PORT_PIN_PULL_DOWN; - break; - } - port_pin_set_config(obj->pin, &pin_conf); -} - -void gpio_dir(gpio_t *obj, PinDirection direction) -{ - MBED_ASSERT(obj->pin != (PinName)NC); - struct port_config pin_conf; - - obj->direction = direction; - pin_conf.input_pull = obj->mode; - pin_conf.powersave = obj->powersave; - switch (direction) { - case PIN_INPUT : - pin_conf.direction = PORT_PIN_DIR_INPUT; - break; - case PIN_OUTPUT: - pin_conf.direction = PORT_PIN_DIR_OUTPUT; - break; - case PIN_INPUT_OUTPUT: - pin_conf.direction = PORT_PIN_DIR_OUTPUT_WTH_READBACK; - break; - } - port_pin_set_config(obj->pin, &pin_conf); -}