762ae456b3
Gregory Nutt is has submitted the SGA Michal Lyszczek has submitted the ICLA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
/****************************************************************************
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* boards/arm/stm32/stm32butterfly2/src/stm32_buttons.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "stm32_gpio.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define NUM_BUTTONS 5
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#define GPIO_JOY_O (GPIO_INPUT | GPIO_CNF_INFLOAT | GPIO_MODE_INPUT |\
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GPIO_PORTC | GPIO_PIN7)
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#define GPIO_JOY_U (GPIO_INPUT | GPIO_CNF_INFLOAT | GPIO_MODE_INPUT |\
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GPIO_PORTC | GPIO_PIN8)
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#define GPIO_JOY_D (GPIO_INPUT | GPIO_CNF_INFLOAT | GPIO_MODE_INPUT |\
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GPIO_PORTC | GPIO_PIN9)
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#define GPIO_JOY_R (GPIO_INPUT | GPIO_CNF_INFLOAT | GPIO_MODE_INPUT |\
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GPIO_PORTC | GPIO_PIN10)
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#define GPIO_JOY_L (GPIO_INPUT | GPIO_CNF_INFLOAT | GPIO_MODE_INPUT |\
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GPIO_PORTC | GPIO_PIN11)
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/****************************************************************************
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* Private Declarations
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****************************************************************************/
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static const uint32_t buttons[NUM_BUTTONS] =
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{
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GPIO_JOY_O, GPIO_JOY_U, GPIO_JOY_D, GPIO_JOY_R, GPIO_JOY_L
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_button_initialize
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*
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* Description:
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* Initializes gpio pins for joystick buttons
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****************************************************************************/
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uint32_t board_button_initialize(void)
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{
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int i;
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for (i = 0; i != NUM_BUTTONS; ++i)
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{
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stm32_configgpio(buttons[i]);
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}
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return NUM_BUTTONS;
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}
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/****************************************************************************
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* Name: board_buttons
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*
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* Description:
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* Reads keys
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****************************************************************************/
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uint32_t board_buttons(void)
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{
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uint32_t rv = 0;
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int i;
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for (i = 0; i != NUM_BUTTONS; ++i)
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{
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if (stm32_gpioread(buttons[i]) == 0)
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{
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rv |= 1 << i;
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}
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}
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return rv;
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}
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