forked from Imagelibrary/rtems
171 lines
7.7 KiB
C
171 lines
7.7 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
|
|
|
|
/*
|
|
* Display driver for HCMS29xx
|
|
*
|
|
* This file declares the SPI based driver for a HCMS29xx 4 digit
|
|
* alphanumeric LED display
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2008 embedded brains GmbH & Co. KG
|
|
*
|
|
* 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.
|
|
*
|
|
* 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 _DISP_HCMS29XX_H
|
|
#define _DISP_HCMS29XX_H
|
|
#include <rtems.h>
|
|
#include <time.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
#define DISP_HCMS29XX_TEXT_CNT (128)
|
|
|
|
typedef struct {
|
|
rtems_device_minor_number minor; /* minor device number */
|
|
/*
|
|
* in the disp_buffer, the string to be displayed is placed
|
|
*/
|
|
char disp_buffer[DISP_HCMS29XX_TEXT_CNT];
|
|
int disp_buf_cnt; /* number of valid chars in disp_buffer */
|
|
/*
|
|
* in the trns buffer the string is transfered to display task
|
|
*/
|
|
char trns_buffer[DISP_HCMS29XX_TEXT_CNT];
|
|
/*
|
|
* in the dev_buffer, characters will be accumulated before display...
|
|
*/
|
|
char dev_buffer[DISP_HCMS29XX_TEXT_CNT];
|
|
int dev_buf_cnt; /* number of valid chars in dev_buffer */
|
|
|
|
rtems_id trns_sema_id; /* ID of disp trns buffer sema */
|
|
rtems_id task_id; /* ID of disp task */
|
|
bool rotate; /* FLAG: display is upside down */
|
|
} spi_disp_hcms29xx_param_t;
|
|
|
|
typedef struct {
|
|
rtems_libi2c_drv_t libi2c_drv_entry;
|
|
spi_disp_hcms29xx_param_t disp_param;
|
|
} disp_hcms29xx_drv_t;
|
|
/*
|
|
* pass this descriptor pointer to rtems_libi2c_register_drv
|
|
*/
|
|
extern rtems_libi2c_drv_t *disp_hcms29xx_driver_descriptor;
|
|
|
|
/*=========================================================================*\
|
|
| Function: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_driver disp_hcms29xx_dev_initialize
|
|
(
|
|
/*-------------------------------------------------------------------------*\
|
|
| Purpose: |
|
|
| prepare the display device driver to accept write calls |
|
|
| register device with its name |
|
|
+---------------------------------------------------------------------------+
|
|
| Input Parameters: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_major_number major,
|
|
rtems_device_minor_number minor,
|
|
void *arg
|
|
);
|
|
/*-------------------------------------------------------------------------*\
|
|
| Return Value: |
|
|
| rtems_status_code |
|
|
\*=========================================================================*/
|
|
|
|
/*=========================================================================*\
|
|
| Function: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_driver disp_hcms29xx_dev_open
|
|
(
|
|
/*-------------------------------------------------------------------------*\
|
|
| Purpose: |
|
|
| open the display device |
|
|
+---------------------------------------------------------------------------+
|
|
| Input Parameters: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_major_number major,
|
|
rtems_device_minor_number minor,
|
|
void *arg
|
|
);
|
|
/*-------------------------------------------------------------------------*\
|
|
| Return Value: |
|
|
| rtems_status_code |
|
|
\*=========================================================================*/
|
|
|
|
/*=========================================================================*\
|
|
| Function: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_driver disp_hcms29xx_dev_write
|
|
(
|
|
/*-------------------------------------------------------------------------*\
|
|
| Purpose: |
|
|
| write to display device |
|
|
+---------------------------------------------------------------------------+
|
|
| Input Parameters: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_major_number major,
|
|
rtems_device_minor_number minor,
|
|
void *arg
|
|
);
|
|
/*-------------------------------------------------------------------------*\
|
|
| Return Value: |
|
|
| rtems_status_code |
|
|
\*=========================================================================*/
|
|
|
|
/*=========================================================================*\
|
|
| Function: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_driver disp_hcms29xx_dev_close
|
|
(
|
|
/*-------------------------------------------------------------------------*\
|
|
| Purpose: |
|
|
| close the display device |
|
|
+---------------------------------------------------------------------------+
|
|
| Input Parameters: |
|
|
\*-------------------------------------------------------------------------*/
|
|
rtems_device_major_number major,
|
|
rtems_device_minor_number minor,
|
|
void *arg
|
|
);
|
|
/*-------------------------------------------------------------------------*\
|
|
| Return Value: |
|
|
| rtems_status_code |
|
|
\*=========================================================================*/
|
|
|
|
#define DISP_HCMS29XX_DRIVER { \
|
|
disp_hcms29xx_dev_initialize, \
|
|
disp_hcms29xx_dev_open, \
|
|
NULL, \
|
|
disp_hcms29xx_dev_write, \
|
|
NULL, \
|
|
disp_hcms29xx_dev_close}
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _DISP_HCMS29XX_H */
|