2019-07-08 09:51:22 +00:00
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/*
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* mbed Microcontroller Library
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* Copyright (c) 2017-2018 Future Electronics
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2019-07-08 15:25:01 +00:00
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* Copyright (c) 2019, Arm Limited and affiliates.
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2019-07-08 09:51:22 +00:00
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed_assert.h"
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#include "mbed_error.h"
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#include "PinNames.h"
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#include "cyhal_gpio.h"
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#include "cyhal_hwmgr.h"
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#include "cy_gpio.h"
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#include "gpio_api.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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uint32_t gpio_set(PinName pin)
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{
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// unimplemented (appears to be unused)
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return 0;
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}
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void gpio_init(gpio_t *obj, PinName pin)
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{
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obj->pin = pin;
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if (pin != CYHAL_NC_PIN_VALUE) {
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cy_rslt_t rslt;
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if (CY_RSLT_SUCCESS != (rslt = cyhal_gpio_init(obj->pin, CYHAL_GPIO_DIR_INPUT, CYHAL_GPIO_DRIVE_ANALOG, false))) {
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MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_GPIO, CY_RSLT_GET_CODE(rslt)), "cyhal_gpio_init failed");
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}
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}
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}
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void gpio_mode(gpio_t *obj, PinMode mode)
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{
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MBED_ASSERT(obj->pin != CYHAL_NC_PIN_VALUE);
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cy_rslt_t rslt;
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if (CY_RSLT_SUCCESS != (rslt = cyhal_gpio_drivemode(obj->pin, mode))) {
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MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_GPIO, CY_RSLT_GET_CODE(rslt)), "cyhal_gpio_mode failed");
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}
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if (mode == PullUp) {
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gpio_write(obj, 1);
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} else if (mode == PullDown) {
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gpio_write(obj, 0);
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}
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}
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void gpio_dir(MBED_UNUSED gpio_t *obj, MBED_UNUSED PinDirection direction)
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{
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// mbed reads from input buffer instead of DR even for output pins so always leave input buffer enabled
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}
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#ifdef __cplusplus
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}
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#endif
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