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drivers/lcd/max7219.c: Add support to MAX7219 LED Matrix as LCD interface
This commit is contained in:
Alan Carvalho de Assis
committed by
Gregory Nutt
Gregory Nutt
parent
471d306260
commit
829e6520e3
@@ -246,6 +246,42 @@ config NOKIA6100_RGBORD
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endif
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config LCD_MAX7219
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bool "Matrix of 8x8 LEDs controlled by MAX7219"
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default n
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---help---
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Matrix of LEDs (8x8) controlled by MAX7219.
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You can use cluster of 8x8 chained together.
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if LCD_MAX7219
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config MAX7219_NHORIZONTALBLKS
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int "Number of 8x8 LEDs matrices in the horizontal (width)!"
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default 1
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---help---
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Specifies the number of physical 8x8 LED matrices that are
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connected together in the horizontal. In fact we have only
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a single strip, but it can be arranged in blocks creating
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physically horizontal/vertical columns/rows.
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config MAX7219_NVERTICALBLKS
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int "Number of 8x8 LEDs matrices in the vertical (height)!"
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default 1
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---help---
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Specifies the number of physical 8x8 LED matrices that are
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connected together in the vertical. In fact we have only
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a single strip, but it can be arranged in blocks creating
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physically horizontal/vertical columns/rows.
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config MAX7219_INTENSITY
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int "Default LED Matrix bright intensity"
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default 10
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range 0 15
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---help---
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Specifies the default LEDs bright intensity to use.
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endif # LCD_MAX7219
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config LCD_MIO283QT2
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bool "MIO283QT-2 TFT LCD Display Module"
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default n
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@@ -83,6 +83,10 @@ ifeq ($(CONFIG_LCD_MIO283QT2),y)
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CSRCS += mio283qt2.c
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endif
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ifeq ($(CONFIG_LCD_MAX7219),y)
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CSRCS += max7219.c
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endif
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ifeq ($(CONFIG_LCD_MIO283QT9A),y)
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CSRCS += mio283qt9a.c
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endif
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,128 @@
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/****************************************************************************
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* include/nuttx/lcd/max7219.h
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*
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* Copyright (C) 2017 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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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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#ifndef __INCLUDE_NUTTX_LCD_MAX7219_H
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#define __INCLUDE_NUTTX_LCD_MAX7219_H
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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 <nuttx/fs/ioctl.h>
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/* Configuration
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* CONFIG_SPI - Enables support for SPI drivers
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* CONFIG_LCD_MAX7219 - Enables support for the MAX7219 driver
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*/
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#if defined(CONFIG_SPI) && defined(CONFIG_LCD_MAX7219)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* MAX7219 register addresses */
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#define MAX7219_NOOP (0x00) /* No Operation */
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#define MAX7219_DIGIT0 (0x01) /* Digit 0 register */
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#define MAX7219_DIGIT1 (0x02) /* Digit 1 register */
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#define MAX7219_DIGIT2 (0x03) /* Digit 2 register */
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#define MAX7219_DIGIT3 (0x04) /* Digit 3 register */
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#define MAX7219_DIGIT4 (0x05) /* Digit 4 register */
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#define MAX7219_DIGIT5 (0x06) /* Digit 5 register */
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#define MAX7219_DIGIT6 (0x07) /* Digit 6 register */
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#define MAX7219_DIGIT7 (0x08) /* Digit 7 register */
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#define MAX7219_DECODE_MODE (0x09) /* Decode Moder register */
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#define MAX7219_INTENSITY (0x0a) /* Intensity register */
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#define MAX7219_SCAN_LIMIT (0x0b) /* Scan Limit register */
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#define MAX7219_SHUTDOWN (0x0c) /* Shutdown register */
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#define MAX7219_DISPLAY_TEST (0x0f) /* Display Test register */
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/* Default register values */
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#define DISABLE_DECODE (0x00) /* Disable 7-seg decode */
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#define DEFAULT_SCAN_LIMIT (0x07) /* Display all digits */
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#define DISPLAY_INTENSITY(n) (n & 0xf) /* low nimble defines it */
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/* Some important "colors" */
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#define MAX7219_BLACK 0
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#define MAX7219_WHITE 1
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/* Only two power settings are supported: */
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#define MAX7219_POWER_OFF 0
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#define MAX7219_POWER_ON 1
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: max7219_initialize
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*
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* Description:
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* Initialize the MAX7219 device as a LCD interface.
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*
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* Input Parameters:
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* spi - An instance of the SPI interface to use to communicate
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* with the MAX7219.
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* devno - Device number to identify current display.
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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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FAR struct lcd_dev_s *max7219_initialize(FAR struct spi_dev_s *spi,
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unsigned int devno);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_SPI && CONFIG_MAX7219 */
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#endif /* __INCLUDE_NUTTX_LCD_MAX7219_H */
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