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nuttx-apps/include/graphics/ft80x.h

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/****************************************************************************
* apps/include/graphics/ft80x.h
*
* 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.
*
****************************************************************************/
#ifndef __APPS_INCLUDE_GRAPHICS_FT80X_H
#define __APPS_INCLUDE_GRAPHICS_FT80X_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#ifdef CONFIG_GRAPHICS_FT80X
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Buffer size in units of words (truncating any unaligned bytes) */
#define FT80X_DL_BUFSIZE (CONFIG_GRAPHICS_FT80X_BUFSIZE & ~3)
#define FT80X_DL_BUFWORDS (CONFIG_GRAPHICS_FT80X_BUFSIZE >> 2)
/****************************************************************************
* Public Types
****************************************************************************/
/* This structure defines the local display list buffer */
struct ft80x_dlbuffer_s
{
bool coproc; /* True: Use co-processor FIFO; false: Use DL memory */
uint16_t dlsize; /* Total sizeof the display list written to hardware */
uint16_t dloffset; /* The number display list bytes buffered locally */
uint32_t dlbuffer[FT80X_DL_BUFWORDS];
};
/* Describes touch sample */
union ft80x_touchpos_u
{
uint32_t xy; /* To force 32-bit alignment */
struct /* Little-endian */
{
int16_t x; /* Touch X position (-32768 if no touch) */
int16_t y; /* Touch Y position (-32768 if no touch) */
} u;
};
struct ft80x_touchinfo_s
{
uint8_t tag; /* Touch 0 tag */
#if defined(CONFIG_LCD_FT800)
int16_t pressure; /* Touch pressure (32767 if not touched) */
#endif
union ft80x_touchpos_u tagpos; /* Position associated with tag */
#if defined(CONFIG_LCD_FT800) || !defined(CONFIG_LCD_FT801_MULTITOUCH)
union ft80x_touchpos_u pos; /* Current touch position */
#else
union ft80x_touchpos_u pos[4]; /* Current touch position for up to 5 touches */
#endif
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Name: ft80x_dl_start
*
* Description:
* Start a new display list. This function will:
*
* 1) Set the total display list size to zero
* 2) Set the display list buffer offset to zero
* 3) Reposition the VFS so that subsequent writes will be to the
* beginning of the hardware display list.
* 4) Write the CMD_DLSTART command into the local display list buffer
* (Only for co-processor commands)
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the caller.
* coproc - True: Use co-processor FIFO; false: Use DL memory.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_dl_start(int fd, FAR struct ft80x_dlbuffer_s *buffer, bool coproc);
/****************************************************************************
* Name: ft80x_dl_end
*
* Description:
* Terminate the display list. This function will:
*
* 1) Add the DISPLAY command to the local display list buffer to finish
* the last display
* 2) If using co-processor RAM CMD, add the CMD_SWAP to the DL command
* list
* 3) Flush the local display buffer to hardware and set the display list
* buffer offset to zero.
* 4) Swap to the newly created display list (DL memory case only).
* 5) For the case of the co-processor RAM CMD, it will also wait for the
* FIFO to be emptied.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the caller.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_dl_end(int fd, FAR struct ft80x_dlbuffer_s *buffer);
/****************************************************************************
* Name: ft80x_dl_data
*
* Description:
* Add data to the display list and increment the display list buffer
* offset. If the data will not fit into the local display buffer, then
* the local display buffer will first be flushed to hardware in order to
* free up space.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the caller.
* data - The data to be added to the display list
* datlen - The length of the data to be added to the display list. If
* this is not an even multiple of 4 bytes, then the actual length
* will be padded with zero bytes to achieve alignment.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_dl_data(int fd, FAR struct ft80x_dlbuffer_s *buffer,
FAR const void *data, size_t datlen);
/****************************************************************************
* Name: ft80x_dl_string
*
* Description:
* Add the string along with its NUL terminator to the display list and
* increment the display list buffer offset. If the length of the string
* with its NUL terminator is not an even multiple of 4 bytes, then the
* actual length will be padded with zero bytes to achieve alignment.
*
* If the data will not fit into the local display buffer, then the local
* display buffer will first be flushed to hardware in order to free up
* space.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the caller.
* str - The string to be added to the display list. If NUL, then a
* NUL string will be added to the display list.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_dl_string(int fd, FAR struct ft80x_dlbuffer_s *buffer,
FAR const char *str);
/****************************************************************************
* Name: ft80x_dl_flush
*
* Description:
* Flush the current contents of the local local display list buffer to
* hardware and reset the local display list buffer offset to zero.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller with
* write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the caller.
* wait - True: wait until data has been consumed by the co-processor
* (only for co-processor destination); false: Send to hardware
* and return immediately.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_dl_flush(int fd, FAR struct ft80x_dlbuffer_s *buffer, bool wait);
/****************************************************************************
* Name: ft80x_dl_create
*
* Description:
* For simple display lists, this function combines all functionality into
* a single combined. This function does the following:
*
* 1) Calls ft80x_dl_dlstart() to initialize the display list.
* 2) Calls ft80x_dl_data() to transfer the simple display list
* 3) Calls ft80x_dl_end() to complete the display list
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the caller.
* data - Pointer to a uint32_t array containing the simple display list
* nwords - The number of 32-bit words in the array.
* coproc - True: Use co-processor FIFO; false: Use DL memory.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_dl_create(int fd, FAR struct ft80x_dlbuffer_s *buffer,
FAR const uint32_t *cmds, unsigned int nwords,
bool coproc);
/****************************************************************************
* Name: ft80x_coproc_send
*
* Description:
* Send commands to the co-processor via the CMD RAM FIFO. This function
* will not return until the command has been consumed by the co-processor.
*
* NOTE: This command is not appropriate use while a display is being
* formed. It is will mess up the CMD RAM FIFO offsets managed by the
* display list logic.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* cmds - A list of 32-bit commands to be sent.
* ncmds - The number of commands in the list.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_coproc_send(int fd, FAR const uint32_t *cmds, size_t ncmds);
/****************************************************************************
* Name: ft80x_coproc_waitlogo
*
* Description:
* Wait for the logo animation to complete. The logo command causes the
* co-processor engine to play back a short animation of the FTDI logo.
* During logo playback the MCU should not access any FT800 resources.
* After 2.5 seconds have elapsed, the co-processor engine writes zero to
* REG_CMD_READ and REG_CMD_WRITE, and starts waiting for commands. After
* this command is complete, the MCU shall write the next command to the
* starting address of RAM_CMD.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_coproc_waitlogo(int fd);
/****************************************************************************
* Name: ft80x_ramg_write
*
* Description:
* Write to graphics memory
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* offset - Offset in graphics memory to write to (dest)
* data - Pointer to a data to be written (src)
* nbytes - The number of bytes to write to graphics memory.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_ramg_write(int fd, unsigned int offset, FAR const void *data,
unsigned int nbytes);
/****************************************************************************
* Name: ft80x_touch_gettransform
*
* Description:
* Read the touch transform matrix
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* matrix - The location to return the transform matrix
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_touch_gettransform(int fd, FAR uint32_t matrix[6]);
/****************************************************************************
* Name: ft80x_touch_tag
*
* Description:
* Read the current touch tag. The touch tag is an 8-bit value
* identifying the specific graphics object on the screen that is being
* touched. The value zero indicates that there is no graphic object being
* touched.
*
* Only a single touch can be queried. For the FT801 in "extended",
* multi-touch mode, this value indicates only the tag associated with
* touch 0.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
*
* Returned Value:
* A value of 1-255 is returned if a graphics object is touched. Zero is
* returned if no graphics object is touched. A negated errno value on failure.
*
****************************************************************************/
int ft80x_touch_tag(int fd);
/****************************************************************************
* Name: ft80x_touch_waittag
*
* Description:
* Wait until there is a change in the touch tag.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* oldtag - The previous tag value. This function will return when the
* current touch tag differs from this value.
*
* Returned Value:
* A value of 1-255 is returned if a graphics object is touched. Zero is
* returned if no graphics object is touched. A negated errno value on failure.
*
****************************************************************************/
int ft80x_touch_waittag(int fd, uint8_t oldtag);
/****************************************************************************
* Name: ft80x_touch_info
*
* Description:
* Return the current touch tag and touch position information.
*
* For the FT801 in "extended", multi-touch mode, the tag value indicates
* only the tag associated with touch 0.
*
* Touch positions of -32768 indicate that no touch is detected.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* info - Location in which to return the touch information
*
* Returned Value:
* A value of 1-255 is returned if a graphics object is touched. Zero is
* returned if no graphics object is touched. A negated errno value on failure.
*
****************************************************************************/
int ft80x_touch_info(int fd, FAR struct ft80x_touchinfo_s *info);
/****************************************************************************
* Name: ft80x_audio_enable
*
* Description:
* Play an short sound effect. If there is a audio amplifier on board
* (such as TPA6205A or LM4864), then there may also be an active low
* audio shutdown output. That output is controlled by this interface.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the
* caller with write access.
* enable - True: Enabled the audio amplifier; false: disable
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_audio_enable(int fd, bool enable);
/****************************************************************************
* Name: ft80x_audio_playsound
*
* Description:
* Play an short sound effect.
*
* NOTE: It may be necessary to enable the audio amplifier with
* ft80x_audio_enable() prior to calling this function.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the
* caller with write access.
* effect - The sound effect to use (see FT80X_EFFECT_* definitions).
* pitch - Pitch associated with the sound effect (see FT80X_NOTE_*
* definitions). May be zero if there is no pitch associated
* with the effect.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_audio_playsound(int fd, uint16_t effect, uint16_t pitch);
/****************************************************************************
* Name: ft80x_audio_playfile
*
* Description:
* Play an audio file. Audio files must consist of raw sample data.
*
* NOTE: It may be necessary to enable the audio amplifier with
* ft80x_audio_enable() prior to calling this function.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the
* caller with write access.
* buffer - An instance of struct ft80x_dlbuffer_s allocated by the
* caller.
* filepath - Absolute path to the audio file
* format - Audio format. One of:
*
* AUDIO_FORMAT_LINEAR Linear Sample format
* AUDIO_FORMAT_ULAW uLaw Sample format
* AUDIO_FORMAT_ADPCM 4-bit IMA ADPCM Sample format
*
* frequency - Audio sample frequency (<65,536)
* volume - Playback volume (0=mute; 255=max)
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 3
int ft80x_audio_playfile(int fd, FAR struct ft80x_dlbuffer_s *buffer,
FAR const char *filepath, uint8_t format,
uint16_t frequency, uint8_t volume);
#endif
/****************************************************************************
* Name: ft80x_backlight_set
*
* Description:
* Set the backlight intensity via the PWM duty.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* duty - The new backlight duty (as a percentage 0..100)
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int ft80x_backlight_set(int fd, uint8_t duty);
/****************************************************************************
* Name: ft80x_backlight_fade
*
* Description:
* Change the backlight intensity with a controllable fade.
*
* Input Parameters:
* fd - The file descriptor of the FT80x device. Opened by the caller
* with write access.
* duty - The terminal duty (as a percentage 0..100)
* delay - The duration of the fade in milliseconds (10..16700).
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
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 (see
* FT80X_GPIO_DRIVE_* definitions). Default is 4mA.
* value - Initial value for output pins
*
* 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,
bool value);
/****************************************************************************
* 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
}
#endif
#endif /* CONFIG_GRAPHICS_FT80X */
#endif /* __APPS_INCLUDE_GRAPHICS_FT80X_H */
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