125 lines
4.2 KiB
C
125 lines
4.2 KiB
C
/****************************************************************************
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* apps/graphics/ft80x/ft80x_gpio.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <nuttx/config.h>
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#include <sys/ioctl.h>
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#include <stdint.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/lcd/ft80x.h>
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#include "graphics/ft80x.h"
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#include "ft80x.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ft80x_gpio_configure
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*
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* Description:
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* Configure an FT80x GPIO pin
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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* gpio - Identifies the GPIO pin {0,1}
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* dir - Direction: 0=input, 1=output
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* drive - Common output drive strength for GPIO 0 and 1:
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* 0=4mA, 1=8mA, 2=12mA, 3=16mA (default is 4mA)
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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int ft80x_gpio_configure(int fd, uint8_t gpio, uint8_t dir, uint8_t drive)
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{
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#warning "Missing logic"
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return OK;
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}
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/****************************************************************************
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* Name: ft80x_gpio_write
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*
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* Description:
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* Write a value to a pin configured for output
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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* gpio - Identifies the GPIO pin {0,1}
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* value - True: high, false: low
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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int ft80x_gpio_write(int fd, uint8_t gpio, bool value)
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{
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#warning "Missing logic"
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return OK;
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}
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/****************************************************************************
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* Name: ft80x_gpio_read
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*
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* Description:
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* Read the value from a pin configured for input
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*
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* Input Parameters:
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* fd - The file descriptor of the FT80x device. Opened by the caller
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* with write access.
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* gpio - Identifies the GPIO pin {0,1}
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*
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* Returned Value:
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* True: high, false: low
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*
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****************************************************************************/
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bool ft80x_gpio_read(int fd, uint8_t gpio)
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{
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#warning "Missing logic"
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return OK;
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}
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