mirror of https://github.com/ARMmbed/mbed-os.git
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2019, Arm Limited and affiliates.
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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 "port_api.h"
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#include "cy_gpio.h"
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#if DEVICE_PORTIN || DEVICE_PORTOUT
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#ifdef __cplusplus
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extern "C" {
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#endif
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void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
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{
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obj->port = Cy_GPIO_PortToAddr(port);
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obj->mask = (uint8_t)mask;
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uint32_t driveMode = dir == PIN_INPUT ? CY_GPIO_DM_HIGHZ : CY_GPIO_DM_STRONG;
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for (int i = 0; i < 8; i++) {
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if (0 != (mask & (1 << i))) {
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Cy_GPIO_Pin_FastInit(obj->port, i, driveMode, 0, HSIOM_SEL_GPIO);
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}
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}
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}
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void port_mode(port_t *obj, PinMode mode)
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{
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for (int i = 0; i < 8; i++) {
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if (0 != (obj->mask & (1 << i))) {
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uint32_t origMode = Cy_GPIO_GetDrivemode(obj->port, i);
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Cy_GPIO_SetDrivemode(obj->port, i, (origMode & CY_GPIO_DM_HIGHZ) | mode);
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}
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}
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}
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void port_dir(port_t *obj, PinDirection dir)
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{
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for (int i = 0; i < 8; i++) {
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if (0 != (obj->mask & (1 << i))) {
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uint32_t origMode = Cy_GPIO_GetDrivemode(obj->port, i);
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Cy_GPIO_SetDrivemode(obj->port, i, origMode == PIN_OUTPUT
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? (origMode & ~CY_GPIO_DM_HIGHZ)
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: (origMode | CY_GPIO_DM_HIGHZ));
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}
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}
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}
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void port_write(port_t *obj, int value)
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{
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obj->port->OUT_SET = value & obj->mask;
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obj->port->OUT_CLR = (~value) & obj->mask;
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}
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int port_read(port_t *obj)
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{
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return obj->port->IN & obj->mask;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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