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/****************************************************************************
* include/nuttx/lcd/p14201.h
* Application interface to the RiT P14201 OLED driver
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 __INCLUDE_NUTTX_P14201_H
#define __INCLUDE_NUTTX_P14201_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdbool.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* P14201 Configuration Settings:
*
* CONFIG_P14201_SPIMODE - Controls the SPI mode
* CONFIG_P14201_FREQUENCY - Define to use a different bus frequency
* CONFIG_P14201_NINTERFACES - Specifies the number of physical P14201 devices that
* will be supported.
* CONFIG_P14201_FRAMEBUFFER - If defined, accesses will be performed using an in-memory
* copy of the OLEDs GDDRAM. This cost of this buffer is 128 * 96 / 2 = 6Kb. If this
* is defined, then the driver will be fully functional. If not, then it will have the
* following limitations:
*
* - Reading graphics memory cannot be supported, and
* - All pixel writes must be aligned to byte boundaries.
*
* The latter limitation effectively reduces the 128x96 disply to 64x96.
*
* Required LCD driver settings:
* CONFIG_LCD_P14201 - Enable P14201 support
* CONFIG_LCD_MAXCONTRAST should be 255, but any value >0 and <=255 will be accepted.
* CONFIG_LCD_MAXPOWER must be 1
*
* Required SPI driver settings:
* CONFIG_SPI_CMDDATA - Include support for cmd/data selection.
*/
/* Some important "colors" */
#define RIT_Y4_BLACK 0x00
#define RIT_Y4_WHITE 0x0f
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/**************************************************************************************
* Name: rit_initialize
*
* Description:
* Initialize the P14201 video hardware. The initial state of the OLED is fully
* initialized, display memory cleared, and the OLED ready to use, but with the power
* setting at 0 (full off == sleep mode).
*
* Input Parameters:
*
* spi - A reference to the SPI driver instance.
* devno - A value in the range of 0 throuh CONFIG_P14201_NINTERFACES-1. This allows
* support for multiple OLED devices.
*
* Returned Value:
*
* On success, this function returns a reference to the LCD object for the specified
* OLED. NULL is returned on any failure.
*
**************************************************************************************/
struct lcd_dev_s; /* see nuttx/lcd.h */
struct spi_dev_s; /* see nuttx/spi.h */
EXTERN FAR struct lcd_dev_s *rit_initialize(FAR struct spi_dev_s *spi, unsigned int devno);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_NUTTX_P14201_H */
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