apps/graphics/ft80x: Add basic support for GPIO and configuration for eventual support of FT80x GPIO audio shutdown controls

This commit is contained in:
Gregory Nutt 2018-02-26 19:08:24 -06:00
parent 685d379542
commit 9f6338566f
4 changed files with 222 additions and 6 deletions

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@ -44,8 +44,9 @@ config GRAPHICS_FT80X_AUDIO_BUFOFFSET
When playing an audio file, chunks of the audio file will be stored
in a circular buffer in graphics RAM (RAMG G, 256Kb).
CONFIG_GRAPHICS_FT80X_AUDIO_BUFOFFSET is the starting offset in RAM G for that
buffer and CONFIG_FT80x_AUDIO_BUFSIZE is the size of the buffer.
CONFIG_GRAPHICS_FT80X_AUDIO_BUFOFFSET is the starting offset in RAM G
for that buffer and CONFIG_FT80x_AUDIO_BUFSIZE is the size of the
buffer.
The buffer may, of course, be used for other purposes when not
playing an audio file.
@ -58,12 +59,44 @@ config GRAPHICS_FT80X_AUDIO_BUFSIZE
When playing an audio file, chunks of the audio file will be stored
in a circular buffer in graphics RAM (RAMG G, 256Kb).
CONFIG_GRAPHICS_FT80X_AUDIO_BUFOFFSET is the starting offset in RAM G for that
buffer and CONFIG_FT80x_AUDIO_BUFSIZE is the size of the buffer.
CONFIG_GRAPHICS_FT80X_AUDIO_BUFOFFSET is the starting offset in RAM G
for that buffer and CONFIG_FT80x_AUDIO_BUFSIZE is the size of the
buffer.
The buffer may, of course, be used for other purposes when not
playing an audio file.
choice
prompt "Audio Shutdown Options"
default GRAPHICS_FT80X_AUDIO_NOSHUTDOWN
config GRAPHICS_FT80X_AUDIO_NOSHUTDOWN
bool "No amplifier shutdown control"
---help---
There is no audio amplifier or the audio amplifier is not under
software control.
config GRAPHICS_FT80X_AUDIO_MCUSHUTDOWN
bool "MCU controls audio shutdown"
---help---
The audio amplifier is controlled via an MCU GPIO output pin.
config GRAPHICS_FT80X_AUDIO_GPIOSHUTDOWN
bool "FT80X controls audo shutdown"
---help---
The audio amplifier is controlled via an FT80x GPIO output pin.
endchoice # Audio Shutdown Option
config GRAPHICS_FT80X_AUDIO_GPIO
int "FT80x audio shutdown GPIO"
default 1
range 1 2
depends on GRAPHICS_FT80X_AUDIO_GPIOSHUTDOWN
---help---
Identifies the GPIO pin used to control the amplifier shutdown
output.
config GRAPHICS_FT80X_DEBUG_ERROR
bool "Enable error output"
default y

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@ -40,8 +40,9 @@ include $(APPDIR)/Make.defs
# FTDI/BridgeTek FT80x library
ASRCS =
CSRCS = ft80x_dl.c ft80x_ramg.c ft80x_ramdl.c ft80x_ramcmd.c ft80x_coproc.c
CSRCS += ft80x_touch.c ft80x_audio.c ft80x_backlight.c ft80x_regs.c
CSRCS = ft80x_dl.c ft80x_ramg.c ft80x_ramdl.c ft80x_ramcmd.c
CSRCS += ft80x_coproc.c ft80x_touch.c ft80x_audio.c ft80x_backlight.c
CSRCS += ft80x_gpio.c ft80x_regs.c
AOBJS = $(ASRCS:.S=$(OBJEXT))
COBJS = $(CSRCS:.c=$(OBJEXT))

124
graphics/ft80x/ft80x_gpio.c Normal file
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@ -0,0 +1,124 @@
/****************************************************************************
* apps/graphics/ft80x/ft80x_gpio.c
*
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/ioctl.h>
#include <stdint.h>
#include <assert.h>
#include <errno.h>
#include <nuttx/lcd/ft80x.h>
#include "graphics/ft80x.h"
#include "ft80x.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: ft80x_gpio_configure
*
* Description:
* Configure an FT80x GPIO pin
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* gpio - Identifies the GPIO pin {0,1}
* dir - Direction: 0=input, 1=output
* drive - Common output drive strength for GPIO 0 and 1:
* 0=4mA, 1=8mA, 2=12mA, 3=16mA (default is 4mA)
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_gpio_configure(int fd, uint8_t gpio, uint8_t dir, uint8_t drive)
{
#warning "Missing logic"
return OK;
}
/****************************************************************************
* Name: ft80x_gpio_write
*
* Description:
* Write a value to a pin configured for output
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* gpio - Identifies the GPIO pin {0,1}
* value - True: high, false: low
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_gpio_write(int fd, uint8_t gpio, bool value)
{
#warning "Missing logic"
return OK;
}
/****************************************************************************
* Name: ft80x_gpio_read
*
* Description:
* Read the value from a pin configured for input
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* gpio - Identifies the GPIO pin {0,1}
*
* Returned Value:
* True: high, false: low
*
****************************************************************************/
bool ft80x_gpio_read(int fd, uint8_t gpio)
{
#warning "Missing logic"
return OK;
}

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@ -512,6 +512,64 @@ int ft80x_backlight_set(int fd, uint8_t duty);
int ft80x_backlight_fade(int fd, uint8_t duty, uint16_t delay);
/****************************************************************************
* Name: ft80x_gpio_configure
*
* Description:
* Configure an FT80x GPIO pin
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* gpio - Identifies the GPIO pin {0,1}
* dir - Direction: 0=input, 1=output
* drive - Common output drive strength for GPIO 0 and 1:
* 0=4mA, 1=8mA, 2=12mA, 3=16mA (default is 4mA)
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_gpio_configure(int fd, uint8_t gpio, uint8_t dir, uint8_t drive);
/****************************************************************************
* Name: ft80x_gpio_write
*
* Description:
* Write a value to a pin configured for output
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* gpio - Identifies the GPIO pin {0,1}
* value - True: high, false: low
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_gpio_write(int fd, uint8_t gpio, bool value);
/****************************************************************************
* Name: ft80x_gpio_read
*
* Description:
* Read the value from a pin configured for input
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* gpio - Identifies the GPIO pin {0,1}
*
* Returned Value:
* True: high, false: low
*
****************************************************************************/
bool ft80x_gpio_read(int fd, uint8_t gpio);
#undef EXTERN
#ifdef __cplusplus
}