Modify the SSD1306 LCD driver to support either the SPI or I2C interface. From Alan Carvalho de Assis,
This commit is contained in:
Alan Carvalho de Assis
Gregory Nutt
parent
cebbe27cfe
commit
a3e24a0b6c
@ -272,7 +272,6 @@ endif
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config LCD_UG2864HSWEG01
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bool "UG-2864HSWEG01 OLED Display Module"
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default n
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depends on SPI
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select LCD_SSD1306
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---help---
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OLED Display Module, UG-2864HSWEG01, Univision Technology Inc based
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@ -288,7 +287,7 @@ config LCD_UG2864HSWEG01
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config LCD_UG2832HSWEG04
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bool "UG-2832HSWEG04 OLED Display Module"
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default n
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depends on SPI && !LCD_UG2864HSWEG01
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depends on !LCD_UG2864HSWEG01
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select LCD_SSD1306
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---help---
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OLED Display Module, UG-UG2832HSWEG04, Univision Technology Inc
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@ -307,6 +306,27 @@ config LCD_SSD1306
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if LCD_SSD1306
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choice
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prompt "UG-2832HSWEG04 Interface"
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default LCD_SSD1306_SPI
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config LCD_SSD1306_SPI
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bool "UG-2832HSWEG04 on SPI Interface"
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select SPI
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---help---
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Enables support for the SPI interface.
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config LCD_SSD1306_I2C
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bool "UG-2832HSWEG04 on I2C Interface"
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select I2C
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---help---
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Enables support for the I2C interface
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endchoice # UG-2832HSWEG04 Interface
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endif # LCD_SSD1306
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if LCD_SSD1306_SPI
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config SSD1306_SPIMODE
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int "SSD1306 SPI Mode"
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default 0
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@ -328,7 +348,23 @@ config SSD1306_FREQUENCY
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# supported. NOTE: At present, this must be undefined or defined to
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# be 1.
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endif
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endif # LCD_SSD1306_SPI
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if LCD_SSD1306_I2C
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config SSD1306_I2CADDR
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int "UG-2832HSWEG04 I2C Address"
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default 120
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---help---
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I2C Address of SSD1306
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config SSD1306_I2CFREQ
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int "UG-2832HSWEG04 I2C Frequency"
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default 400000
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---help---
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I2C Frequency to communicate with SSD1306
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endif # LCD_SSD1306_I2C
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config LCD_ST7565
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bool "ST7565 LCD Display Module"
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@ -56,7 +56,15 @@ ifeq ($(CONFIG_LCD_UG9664HSWAG01),y)
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endif
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ifeq ($(CONFIG_LCD_SSD1306),y)
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CSRCS += ssd1306.c
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CSRCS += ssd1306_base.c
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endif
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ifeq ($(CONFIG_LCD_SSD1306_SPI),y)
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CSRCS += ssd1306_spi.c
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endif
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ifeq ($(CONFIG_LCD_SSD1306_I2C),y)
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CSRCS += ssd1306_i2c.c
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endif
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ifeq ($(CONFIG_LCD_SSD1289),y)
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@ -3,7 +3,7 @@
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* Driver for Univision UG-2864HSWEG01 OLED display or UG-2832HSWEG04 both with the
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* Univision SSD1306 controller in SPI mode
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*
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* Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
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* Copyright (C) 2012-2013, 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* References:
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@ -129,12 +129,15 @@
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/i2c.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/ssd1306.h>
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#include <arch/irq.h>
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#include "ssd1306_helpers.h"
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#ifdef CONFIG_LCD_SSD1306
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/**************************************************************************************
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@ -316,15 +319,18 @@
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struct ssd1306_dev_s
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{
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struct lcd_dev_s dev; /* Publically visible device structure */
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struct lcd_dev_s dev; /* Publicly visible device structure */
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/* Private LCD-specific information follows */
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#ifdef CONFIG_LCD_SSD1306_SPI
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FAR struct spi_dev_s *spi; /* Cached SPI device reference */
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#else
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FAR struct i2c_dev_s *i2c; /* Cached SPI device reference */
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#endif
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uint8_t contrast; /* Current contrast setting */
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bool on; /* true: display is on */
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/* The SSD1306 does not support reading from the display memory in SPI mode.
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* Since there is 1 BPP and access is byte-by-byte, it is necessary to keep
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* a shadow copy of the framebuffer memory. At 128x64, this amounts to 1KB.
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@ -334,21 +340,9 @@ struct ssd1306_dev_s
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};
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/**************************************************************************************
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* Private Function Protototypes
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* Private Function Prototypes
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**************************************************************************************/
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/* Low-level SPI helpers */
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#ifdef CONFIG_SPI_OWNBUS
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static inline void ssd1306_configspi(FAR struct spi_dev_s *spi);
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# define ssd1306_lock(spi)
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# define ssd1306_unlock(spi)
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#else
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# define ssd1306_configspi(spi)
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static void ssd1306_lock(FAR struct spi_dev_s *spi);
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static void ssd1306_unlock(FAR struct spi_dev_s *spi);
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#endif
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/* LCD Data Transfer Methods */
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static int ssd1306_putrun(fb_coord_t row, fb_coord_t col,
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@ -446,96 +440,6 @@ static struct ssd1306_dev_s g_oleddev =
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* Private Functions
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**************************************************************************************/
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/**************************************************************************************
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* Name: ssd1306_configspi
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*
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* Description:
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* Configure the SPI for use with the UG-2864HSWEG01
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*
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* Input Parameters:
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* spi - Reference to the SPI driver structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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**************************************************************************************/
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#ifdef CONFIG_SPI_OWNBUS
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static inline void ssd1306_configspi(FAR struct spi_dev_s *spi)
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{
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lcdvdbg("Mode: %d Bits: 8 Frequency: %d\n",
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CONFIG_SSD1306_SPIMODE, CONFIG_SSD1306_FREQUENCY);
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/* Configure SPI for the UG-2864HSWEG01. But only if we own the SPI bus. Otherwise,
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* don't bother because it might change.
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*/
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SPI_SETMODE(spi, CONFIG_SSD1306_SPIMODE);
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SPI_SETBITS(spi, 8);
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SPI_SETFREQUENCY(spi, CONFIG_SSD1306_FREQUENCY);
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}
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#endif
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/**************************************************************************************
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* Name: ssd1306_lock
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*
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* Description:
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* Select the SPI, locking and re-configuring if necessary
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*
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* Input Parameters:
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* spi - Reference to the SPI driver structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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**************************************************************************************/
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#ifndef CONFIG_SPI_OWNBUS
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static inline void ssd1306_lock(FAR struct spi_dev_s *spi)
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{
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/* Lock the SPI bus if there are multiple devices competing for the SPI bus. */
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SPI_LOCK(spi, true);
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/* Now make sure that the SPI bus is configured for the UG-2864HSWEG01 (it
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* might have gotten configured for a different device while unlocked)
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*/
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SPI_SETMODE(spi, CONFIG_SSD1306_SPIMODE);
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SPI_SETBITS(spi, 8);
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SPI_SETFREQUENCY(spi, CONFIG_SSD1306_FREQUENCY);
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}
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#endif
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/**************************************************************************************
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* Name: ssd1306_unlock
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*
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* Description:
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* De-select the SPI
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*
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* Input Parameters:
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* spi - Reference to the SPI driver structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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**************************************************************************************/
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#ifndef CONFIG_SPI_OWNBUS
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static inline void ssd1306_unlock(FAR struct spi_dev_s *spi)
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{
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/* De-select UG-2864HSWEG01 chip and relinquish the SPI bus. */
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SPI_LOCK(spi, false);
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}
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#endif
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/**************************************************************************************
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* Name: ssd1306_putrun
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*
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@ -711,35 +615,33 @@ static int ssd1306_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buf
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/* Lock and select device */
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ssd1306_lock(priv->spi);
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SPI_SELECT(priv->spi, SPIDEV_DISPLAY, true);
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ssd1306_select(priv, true);
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/* Select command transfer */
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SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, true);
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ssd1306_cmddata(priv, true);
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/* Set the starting position for the run */
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/* Set the column address to the XOFFSET value */
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SPI_SEND(priv->spi, SSD1306_SETCOLL(devcol & 0x0f));
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SPI_SEND(priv->spi, SSD1306_SETCOLH(devcol >> 4));
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ssd1306_sendbyte(priv, SSD1306_SETCOLL(devcol & 0x0f));
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ssd1306_sendbyte(priv, SSD1306_SETCOLH(devcol >> 4));
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/* Set the page address */
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SPI_SEND(priv->spi, SSD1306_PAGEADDR(page));
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ssd1306_sendbyte(priv, SSD1306_PAGEADDR(page));
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/* Select data transfer */
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SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, false);
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ssd1306_cmddata(priv, false);
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/* Then transfer all of the data */
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(void)SPI_SNDBLOCK(priv->spi, fbptr, pixlen);
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ssd1306_sendblk(priv, fbptr, pixlen);
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/* De-select and unlock the device */
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SPI_SELECT(priv->spi, SPIDEV_DISPLAY, false);
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ssd1306_unlock(priv->spi);
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ssd1306_select(priv, false);
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return OK;
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}
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#else
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@ -975,34 +877,32 @@ static int ssd1306_getpower(FAR struct lcd_dev_s *dev)
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static int ssd1306_setpower(FAR struct lcd_dev_s *dev, int power)
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{
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struct ssd1306_dev_s *priv = (struct ssd1306_dev_s *)dev;
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DEBUGASSERT(priv && (unsigned)power <= CONFIG_LCD_MAXPOWER && priv->spi);
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DEBUGASSERT(priv && (unsigned)power <= CONFIG_LCD_MAXPOWER);
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lcdvdbg("power: %d [%d]\n", power, priv->on ? CONFIG_LCD_MAXPOWER : 0);
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/* Lock and select device */
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ssd1306_lock(priv->spi);
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SPI_SELECT(priv->spi, SPIDEV_DISPLAY, true);
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ssd1306_select(priv, true);
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if (power <= 0)
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{
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/* Turn the display off */
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(void)SPI_SEND(priv->spi, SSD1306_DISPOFF);
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(void)ssd1306_sendbyte(priv, SSD1306_DISPOFF);
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priv->on = false;
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}
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else
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{
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/* Turn the display on */
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(void)SPI_SEND(priv->spi, SSD1306_DISPON);
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(void)ssd1306_sendbyte(priv, SSD1306_DISPON);
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priv->on = true;
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}
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/* De-select and unlock the device */
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SPI_SELECT(priv->spi, SPIDEV_DISPLAY, false);
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ssd1306_unlock(priv->spi);
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ssd1306_select(priv, false);
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return OK;
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}
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@ -1060,23 +960,21 @@ static int ssd1306_setcontrast(struct lcd_dev_s *dev, unsigned int contrast)
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/* Lock and select device */
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ssd1306_lock(priv->spi);
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SPI_SELECT(priv->spi, SPIDEV_DISPLAY, true);
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ssd1306_select(priv, true);
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/* Select command transfer */
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SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, true);
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ssd1306_cmddata(priv, true);
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/* Set the contrast */
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(void)SPI_SEND(priv->spi, SSD1306_CONTRAST_MODE); /* Set contrast control register */
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(void)SPI_SEND(priv->spi, SSD1306_CONTRAST(scaled)); /* Data 1: Set 1 of 256 contrast steps */
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(void)ssd1306_sendbyte(priv, SSD1306_CONTRAST_MODE); /* Set contrast control register */
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(void)ssd1306_sendbyte(priv, SSD1306_CONTRAST(scaled)); /* Data 1: Set 1 of 256 contrast steps */
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priv->contrast = contrast;
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/* De-select and unlock the device */
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SPI_SELECT(priv->spi, SPIDEV_DISPLAY, false);
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ssd1306_unlock(priv->spi);
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ssd1306_select(priv, false);
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return OK;
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}
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@ -1105,29 +1003,56 @@ static int ssd1306_setcontrast(struct lcd_dev_s *dev, unsigned int contrast)
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*
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**************************************************************************************/
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FAR struct lcd_dev_s *ssd1306_initialize(FAR struct spi_dev_s *spi, unsigned int devno)
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#ifdef CONFIG_LCD_SSD1306_SPI
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FAR struct lcd_dev_s *ssd1306_initialize(FAR struct spi_dev_s *dev, unsigned int devno)
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#else
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FAR struct lcd_dev_s *ssd1306_initialize(FAR struct i2c_dev_s *dev, unsigned int devno)
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#endif
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{
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FAR struct ssd1306_dev_s *priv = &g_oleddev;
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lcdvdbg("Initializing\n");
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DEBUGASSERT(spi && devno == 0);
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/* Save the reference to the SPI device */
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#ifdef CONFIG_LCD_SSD1306_SPI
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priv->spi = dev;
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priv->spi = spi;
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/* If this SPI bus is not shared, then we can config it now.
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* If it is shared, then other device could change our config,
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* then just configure before sending data.
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*/
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/* Configure the SPI */
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# ifdef CONFIG_SPI_OWNBUS
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/* Configure SPI */
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ssd1306_configspi(spi);
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SPI_SETMODE(priv->spi, CONFIG_SSD1306_SPIMODE);
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SPI_SETBITS(priv->spi, 8);
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SPI_SETFREQUENCY(priv->spi, CONFIG_SSD1306_FREQUENCY);
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# else
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/* Configure the SPI */
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ssd1306_configspi(priv->spi);
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# endif
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#else
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priv->i2c = dev;
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/* Set the I2C address and frequency. REVISIT: This logic would be
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* insufficient if we share the I2C bus with any other devices that also
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* modify the address and frequency.
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*/
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I2C_SETADDRESS(priv->i2c, CONFIG_SSD1306_I2CADDR, 7);
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I2C_SETFREQUENCY(priv->i2c, CONFIG_SSD1306_I2CFREQ);
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#endif
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/* Lock and select device */
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ssd1306_lock(priv->spi);
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SPI_SELECT(spi, SPIDEV_DISPLAY, true);
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ssd1306_select(priv, true);
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/* Select command transfer */
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SPI_CMDDATA(spi, SPIDEV_DISPLAY, true);
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ssd1306_cmddata(priv, true);
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/* Configure OLED SPI or I/O, must be delayed 1-10ms */
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@ -1135,45 +1060,44 @@ FAR struct lcd_dev_s *ssd1306_initialize(FAR struct spi_dev_s *spi, unsigned int
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/* Configure the device */
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SPI_SEND(spi, SSD1306_DISPOFF); /* Display off 0xae */
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SPI_SEND(spi, SSD1306_SETCOLL(0)); /* Set lower column address 0x00 */
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SPI_SEND(spi, SSD1306_SETCOLH(0)); /* Set higher column address 0x10 */
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SPI_SEND(spi, SSD1306_STARTLINE(0)); /* Set display start line 0x40 */
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/* SPI_SEND(spi, SSD1306_PAGEADDR(0));*//* Set page address (Can ignore)*/
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SPI_SEND(spi, SSD1306_CONTRAST_MODE); /* Contrast control 0x81 */
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SPI_SEND(spi ,SSD1306_CONTRAST(SSD1306_DEV_CONTRAST)); /* Default contrast 0xCF */
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SPI_SEND(spi, SSD1306_REMAPPLEFT); /* Set segment remap left 95 to 0 | 0xa1 */
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/* SPI_SEND(spi, SSD1306_EDISPOFF); */ /* Normal display off 0xa4 (Can ignore)*/
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SPI_SEND(spi, SSD1306_NORMAL); /* Normal (un-reversed) display mode 0xa6 */
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SPI_SEND(spi, SSD1306_MRATIO_MODE); /* Multiplex ratio 0xa8 */
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SPI_SEND(spi, SSD1306_MRATIO(SSD1306_DEV_DUTY)); /* Duty = 1/64 or 1/32 */
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/* SPI_SEND(spi, SSD1306_SCANTOCOM0);*/ /* Com scan direction: Scan from COM[n-1] to COM[0] (Can ignore)*/
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SPI_SEND(spi, SSD1306_DISPOFFS_MODE); /* Set display offset 0xd3 */
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SPI_SEND(spi, SSD1306_DISPOFFS(0));
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SPI_SEND(spi, SSD1306_CLKDIV_SET); /* Set clock divider 0xd5*/
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SPI_SEND(spi, SSD1306_CLKDIV(8,0)); /* 0x80*/
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ssd1306_sendbyte(priv, SSD1306_DISPOFF); /* Display off 0xae */
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ssd1306_sendbyte(priv, SSD1306_SETCOLL(0)); /* Set lower column address 0x00 */
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ssd1306_sendbyte(priv, SSD1306_SETCOLH(0)); /* Set higher column address 0x10 */
|
||||
ssd1306_sendbyte(priv, SSD1306_STARTLINE(0)); /* Set display start line 0x40 */
|
||||
/* ssd1306_sendbyte(priv, SSD1306_PAGEADDR(0));*//* Set page address (Can ignore)*/
|
||||
ssd1306_sendbyte(priv, SSD1306_CONTRAST_MODE); /* Contrast control 0x81 */
|
||||
ssd1306_sendbyte(priv,SSD1306_CONTRAST(SSD1306_DEV_CONTRAST)); /* Default contrast 0xCF */
|
||||
ssd1306_sendbyte(priv, SSD1306_REMAPPLEFT); /* Set segment remap left 95 to 0 | 0xa1 */
|
||||
/* ssd1306_sendbyte(priv, SSD1306_EDISPOFF); */ /* Normal display off 0xa4 (Can ignore)*/
|
||||
ssd1306_sendbyte(priv, SSD1306_NORMAL); /* Normal (un-reversed) display mode 0xa6 */
|
||||
ssd1306_sendbyte(priv, SSD1306_MRATIO_MODE); /* Multiplex ratio 0xa8 */
|
||||
ssd1306_sendbyte(priv, SSD1306_MRATIO(SSD1306_DEV_DUTY)); /* Duty = 1/64 or 1/32 */
|
||||
/* ssd1306_sendbyte(priv, SSD1306_SCANTOCOM0);*/ /* Com scan direction: Scan from COM[n-1] to COM[0] (Can ignore)*/
|
||||
ssd1306_sendbyte(priv, SSD1306_DISPOFFS_MODE); /* Set display offset 0xd3 */
|
||||
ssd1306_sendbyte(priv, SSD1306_DISPOFFS(0));
|
||||
ssd1306_sendbyte(priv, SSD1306_CLKDIV_SET); /* Set clock divider 0xd5*/
|
||||
ssd1306_sendbyte(priv, SSD1306_CLKDIV(8,0)); /* 0x80*/
|
||||
|
||||
SPI_SEND(spi, SSD1306_CHRGPER_SET); /* Set pre-charge period 0xd9 */
|
||||
SPI_SEND(spi, SSD1306_CHRGPER(0x0f,1)); /* 0xf1 or 0x22 Enhanced mode */
|
||||
ssd1306_sendbyte(priv, SSD1306_CHRGPER_SET); /* Set pre-charge period 0xd9 */
|
||||
ssd1306_sendbyte(priv, SSD1306_CHRGPER(0x0f,1)); /* 0xf1 or 0x22 Enhanced mode */
|
||||
|
||||
SPI_SEND(spi, SSD1306_CMNPAD_CONFIG); /* Set common pads / set com pins hardware configuration 0xda */
|
||||
SPI_SEND(spi, SSD1306_CMNPAD(SSD1306_DEV_CMNPAD)); /* 0x12 or 0x02 */
|
||||
ssd1306_sendbyte(priv, SSD1306_CMNPAD_CONFIG); /* Set common pads / set com pins hardware configuration 0xda */
|
||||
ssd1306_sendbyte(priv, SSD1306_CMNPAD(SSD1306_DEV_CMNPAD)); /* 0x12 or 0x02 */
|
||||
|
||||
SPI_SEND(spi, SSD1306_VCOM_SET); /* set vcomh 0xdb*/
|
||||
SPI_SEND(spi, SSD1306_VCOM(0x40));
|
||||
ssd1306_sendbyte(priv, SSD1306_VCOM_SET); /* set vcomh 0xdb*/
|
||||
ssd1306_sendbyte(priv, SSD1306_VCOM(0x40));
|
||||
|
||||
SPI_SEND(spi, SSD1306_CHRPUMP_SET); /* Set Charge Pump enable/disable 0x8d ssd1306 */
|
||||
SPI_SEND(spi, SSD1306_CHRPUMP_ON); /* 0x14 close 0x10 */
|
||||
ssd1306_sendbyte(priv, SSD1306_CHRPUMP_SET); /* Set Charge Pump enable/disable 0x8d ssd1306 */
|
||||
ssd1306_sendbyte(priv, SSD1306_CHRPUMP_ON); /* 0x14 close 0x10 */
|
||||
|
||||
/* SPI_SEND(spi, SSD1306_DCDC_MODE); */ /* DC/DC control mode: on (SSD1306 Not supported) */
|
||||
/* SPI_SEND(spi, SSD1306_DCDC_ON); */
|
||||
/* ssd1306_sendbyte(priv, SSD1306_DCDC_MODE); */ /* DC/DC control mode: on (SSD1306 Not supported) */
|
||||
/* ssd1306_sendbyte(priv, SSD1306_DCDC_ON); */
|
||||
|
||||
SPI_SEND(spi, SSD1306_DISPON); /* Display ON 0xaf */
|
||||
ssd1306_sendbyte(priv, SSD1306_DISPON); /* Display ON 0xaf */
|
||||
|
||||
/* De-select and unlock the device */
|
||||
|
||||
SPI_SELECT(spi, SPIDEV_DISPLAY, false);
|
||||
ssd1306_unlock(priv->spi);
|
||||
ssd1306_select(priv, false);
|
||||
|
||||
/* Clear the display */
|
||||
|
||||
@ -1219,8 +1143,7 @@ void ssd1306_fill(FAR struct lcd_dev_s *dev, uint8_t color)
|
||||
|
||||
/* Lock and select device */
|
||||
|
||||
ssd1306_lock(priv->spi);
|
||||
SPI_SELECT(priv->spi, SPIDEV_DISPLAY, true);
|
||||
ssd1306_select(priv, true);
|
||||
|
||||
/* Visit each page */
|
||||
|
||||
@ -1228,31 +1151,30 @@ void ssd1306_fill(FAR struct lcd_dev_s *dev, uint8_t color)
|
||||
{
|
||||
/* Select command transfer */
|
||||
|
||||
SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, true);
|
||||
ssd1306_cmddata(priv, true);
|
||||
|
||||
/* Set the column address to the XOFFSET value */
|
||||
|
||||
SPI_SEND(priv->spi, SSD1306_SETCOLL(SSD1306_DEV_XOFFSET));
|
||||
SPI_SEND(priv->spi, SSD1306_SETCOLH(0));
|
||||
ssd1306_sendbyte(priv, SSD1306_SETCOLL(SSD1306_DEV_XOFFSET));
|
||||
ssd1306_sendbyte(priv, SSD1306_SETCOLH(0));
|
||||
|
||||
/* Set the page address */
|
||||
|
||||
SPI_SEND(priv->spi, SSD1306_PAGEADDR(page));
|
||||
ssd1306_sendbyte(priv, SSD1306_PAGEADDR(page));
|
||||
|
||||
/* Select data transfer */
|
||||
|
||||
SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, false);
|
||||
ssd1306_cmddata(priv, false);
|
||||
|
||||
/* Transfer one page of the selected color */
|
||||
|
||||
(void)SPI_SNDBLOCK(priv->spi, &priv->fb[page * SSD1306_DEV_XRES],
|
||||
ssd1306_sendblk(priv, &priv->fb[page * SSD1306_DEV_XRES],
|
||||
SSD1306_DEV_XRES);
|
||||
}
|
||||
|
||||
/* De-select and unlock the device */
|
||||
|
||||
SPI_SELECT(priv->spi, SPIDEV_DISPLAY, false);
|
||||
ssd1306_unlock(priv->spi);
|
||||
ssd1306_select(priv, false);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_LCD_SSD1306 */
|
||||
52
drivers/lcd/ssd1306_helpers.h
Normal file
52
drivers/lcd/ssd1306_helpers.h
Normal file
@ -0,0 +1,52 @@
|
||||
/********************************************************************************************
|
||||
* drivers/lcd/ssd1306_helpers.h
|
||||
*
|
||||
* Copyright (C) 2015 Alan Carvalho de Assis
|
||||
* Author: Alan Carvalho de Assis <acassis@gmail.com>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
#include <nuttx/lcd/ssd1306.h>
|
||||
|
||||
//void ssd1306_sendbyte(FAR struct ssd1306_dev_s *priv, uint8_t regval);
|
||||
//void ssd1306_sendblk(FAR struct ssd1306_dev_s *priv, uint8_t *data, uint8_t len);
|
||||
|
||||
#ifdef CONFIG_LCD_SSD1306_SPI
|
||||
// void ssd1306_select(FAR struct ssd1306_dev_s *priv, bool cs);
|
||||
// void ssd1306_cmddata(FAR struct ssd1306_dev_s *priv, bool cmd);
|
||||
|
||||
# ifndef CONFIG_SPI_OWNBUS
|
||||
// static inline void ssd1306_configspi(FAR struct spi_dev_s *spi)
|
||||
# endif
|
||||
|
||||
#else
|
||||
# define ssd1306_select(priv, cs)
|
||||
# define ssd1306_cmddata(priv, cmd)
|
||||
#endif
|
||||
134
drivers/lcd/ssd1306_i2c.c
Normal file
134
drivers/lcd/ssd1306_i2c.c
Normal file
@ -0,0 +1,134 @@
|
||||
/****************************************************************************
|
||||
* drivers/lcd/ssd1306_i2c.c
|
||||
*
|
||||
* Copyright (C) 2015 Alan Carvalho de Assis. All rights reserved.
|
||||
* Author: Alan Carvalho de Assis <acassis@gmail.com>
|
||||
*
|
||||
* 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 <unistd.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/kmalloc.h>
|
||||
#include <nuttx/lcd/ssd1306.h>
|
||||
|
||||
#include "ssd1306_helpers.h"
|
||||
|
||||
#if defined(CONFIG_LCD_SSD1306) && defined(CONFIG_LCD_UG2864HSWEG01_I2C)
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_sendbyte
|
||||
*
|
||||
* Description:
|
||||
* Write an 8-bit value into SSD1306
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void ssd1306_sendbyte(FAR struct ssd1306_dev_s *priv, uint8_t regval)
|
||||
{
|
||||
/* 8-bit data read sequence:
|
||||
*
|
||||
* Start - I2C_Write_Address - SSD1306_Reg_Address - SSD1306_Write_Data - STOP
|
||||
*/
|
||||
|
||||
struct i2c_msg_s msg;
|
||||
uint8_t txbuffer[1];
|
||||
int ret;
|
||||
|
||||
#ifdef CONFIG_LCD_SSD1306_REGDEBUG
|
||||
lldbg("-> 0x%02x\n", regval);
|
||||
#endif
|
||||
|
||||
/* Setup to the data to be transferred. Two bytes: The SSD1306 register
|
||||
* address followed by one byte of data.
|
||||
*/
|
||||
|
||||
txbuffer[0] = regval;
|
||||
|
||||
/* Setup 8-bit SSD1306 address write message */
|
||||
|
||||
msg.addr = priv->config->address; /* 7-bit address */
|
||||
msg.flags = 0; /* Write transaction, beginning with START */
|
||||
msg.buffer = txbuffer; /* Transfer from this address */
|
||||
msg.length = 1; /* Send one byte following the address
|
||||
* (then STOP) */
|
||||
|
||||
/* Perform the transfer */
|
||||
|
||||
ret = I2C_TRANSFER(priv->i2c, &msg, 1);
|
||||
if (ret < 0)
|
||||
{
|
||||
sndbg("I2C_TRANSFER failed: %d\n", ret);
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_sendblk
|
||||
*
|
||||
* Description:
|
||||
* Write an array of bytes to SSD1306
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void ssd1306_sendblk(FAR struct ssd1306_dev_s *priv, uint8_t *data, uint8_t len)
|
||||
{
|
||||
/* 8-bit data read sequence:
|
||||
*
|
||||
* Start - I2C_Write_Address - SSD1306_Reg_Address - SSD1306_Write_Data - STOP
|
||||
*/
|
||||
|
||||
struct i2c_msg_s msg;
|
||||
int ret;
|
||||
|
||||
/* Setup 8-bit SSD1306 address write message */
|
||||
|
||||
msg.addr = priv->config->address; /* 7-bit address */
|
||||
msg.flags = 0; /* Write transaction, beginning with START */
|
||||
msg.buffer = data; /* Transfer from this address */
|
||||
msg.length = len; /* Send one byte following the address
|
||||
* (then STOP) */
|
||||
|
||||
/* Perform the transfer */
|
||||
|
||||
ret = I2C_TRANSFER(priv->i2c, &msg, 1);
|
||||
if (ret < 0)
|
||||
{
|
||||
sndbg("I2C_TRANSFER failed: %d\n", ret);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* CONFIG_LCD_SSD1306 &7 CONFIG_LCD_UG2864HSWEG01_I2C */
|
||||
168
drivers/lcd/ssd1306_spi.c
Normal file
168
drivers/lcd/ssd1306_spi.c
Normal file
@ -0,0 +1,168 @@
|
||||
/****************************************************************************
|
||||
* drivers/lcd/ssd1306_spi.c
|
||||
*
|
||||
* Copyright (C) 2015 Alan Carvalho de Assis. All rights reserved.
|
||||
* Author: Alan Carvalho de Assis <acassis@gmail.com>
|
||||
*
|
||||
* 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 <unistd.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/kmalloc.h>
|
||||
#include <nuttx/lcd/ssd1306.h>
|
||||
|
||||
#include "ssd1306_helpers.h"
|
||||
|
||||
#if defined(CONFIG_LCD_UG2864HSWEG01) && defined(CONFIG_LCD_UG2864HSWEG01_SPI)
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_configspi
|
||||
*
|
||||
* Description:
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef CONFIG_SPI_OWNBUS
|
||||
static inline void ssd1306_configspi(FAR struct spi_dev_s *spi)
|
||||
{
|
||||
lcdvdbg("Mode: %d Bits: 8 Frequency: %d\n",
|
||||
CONFIG_SSD1306_SPIMODE, CONFIG_SSD1306_FREQUENCY);
|
||||
|
||||
/* Configure SPI for the UG2864AMBAG01 */
|
||||
|
||||
SPI_SETMODE(spi, CONFIG_SSD1306_SPIMODE);
|
||||
SPI_SETBITS(spi, 8);
|
||||
SPI_SETFREQUENCY(spi, CONFIG_SSD1306_FREQUENCY);
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_sendbyte
|
||||
*
|
||||
* Description:
|
||||
* Write a value to an 8-bit value to UG2864AMBAG01
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void ssd1306_sendbyte(FAR struct ssd1306_dev_s *priv, uint8_t regval)
|
||||
{
|
||||
#ifdef CONFIG_LCD_UG2864AMBAG01_REGDEBUG
|
||||
lldbg("->0x%02x\n", regval);
|
||||
#endif
|
||||
|
||||
/* Send byte value to display */
|
||||
|
||||
(void)SPI_SEND(priv->spi, regval);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_sendblk
|
||||
*
|
||||
* Description:
|
||||
* Write an array of bytes to UG2864AMBAG01
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void ssd1306_sendblk(FAR struct ssd1306_dev_s *priv, uint8_t *data, uint8_t len)
|
||||
{
|
||||
/* Send byte value to display */
|
||||
|
||||
(void)SPI_SNDBLOCK(priv, data, len);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_select
|
||||
*
|
||||
* Description:
|
||||
* Enable/Disable UG2864AMBAG01 SPI CS
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void ssd1306_select(FAR struct ssd1306_dev_s *priv, bool cs)
|
||||
{
|
||||
#ifndef CONFIG_SPI_OWNBUS
|
||||
/* If we are selecting the device */
|
||||
|
||||
if (cs == true)
|
||||
{
|
||||
/* If SPI bus is shared then lock and configure it */
|
||||
|
||||
(void)SPI_LOCK(priv->spi, true);
|
||||
ssd1306_configspi(priv->spi);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Select/deselect SPI device */
|
||||
|
||||
SPI_SELECT(priv->spi, SPIDEV_DISPLAY, cs);
|
||||
|
||||
#ifndef CONFIG_SPI_OWNBUS
|
||||
/* If we are deselecting the device */
|
||||
|
||||
if (cs == false)
|
||||
{
|
||||
/* Unlock bus */
|
||||
|
||||
(void)SPI_LOCK(priv->spi, false);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ssd1306_cmddata
|
||||
*
|
||||
* Description:
|
||||
* Select Command/Data mode for UG2864AMBAG01
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void ssd1306_cmddata(FAR struct ssd1306_dev_s *priv, bool cmd)
|
||||
{
|
||||
/* Select command transfer */
|
||||
|
||||
SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, cmd);
|
||||
}
|
||||
#endif /* CONFIG_LCD_UG2864AMBAG01 && CONFIG_LCD_UG2864AMBAG01_SPI */
|
||||
@ -4,7 +4,7 @@
|
||||
* Driver for Univision UG-2864HSWEG01 OLED display or UG-2832HSWEG04 both with the
|
||||
* Univision SSD1306 controller in SPI mode
|
||||
*
|
||||
* Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
|
||||
* Copyright (C) 2012-2013, 2015 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* References:
|
||||
@ -97,6 +97,8 @@
|
||||
* Clock phase: Sample on trailing (rising edge) (CPHA 1)
|
||||
*/
|
||||
|
||||
#ifdef LCD_SSD1306_SPI
|
||||
|
||||
#ifndef CONFIG_UG2864HSWEG01_SPIMODE
|
||||
# define CONFIG_UG2864HSWEG01_SPIMODE SPIDEV_MODE3
|
||||
#endif
|
||||
@ -112,6 +114,24 @@
|
||||
# error "CONFIG_SPI_CMDDATA must be defined in your NuttX configuration"
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_LCD_SSD1306_SPI */
|
||||
|
||||
#ifdef CONFIG_LCD_SSD1306_I2C
|
||||
|
||||
#ifndef CONFIG_I2C_TRANSFER
|
||||
# error "CONFIG_I2C_TRANSFER must be defined in your NuttX configuration"
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_SSD1306_I2CADDR
|
||||
# define CONFIG_SSD1306_I2CADDR 0x78 /* 120 in decimal */
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_SSD1306_I2CFREQ
|
||||
# define CONFIG_SSD1306_I2CADDR 400000
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_LCD_SSD1306_I2C */
|
||||
|
||||
/* CONFIG_UG2864HSWEG01_NINTERFACES determines the number of physical interfaces
|
||||
* that will be supported.
|
||||
*/
|
||||
@ -207,7 +227,7 @@ extern "C"
|
||||
*
|
||||
* Input Parameters:
|
||||
*
|
||||
* spi - A reference to the SPI driver instance.
|
||||
* dev - A reference to the SPI/I2C driver instance.
|
||||
* devno - A value in the range of 0 through CONFIG_UG2864HSWEG01_NINTERFACES-1.
|
||||
* This allows support for multiple OLED devices.
|
||||
*
|
||||
@ -220,7 +240,11 @@ extern "C"
|
||||
|
||||
struct lcd_dev_s; /* See include/nuttx/lcd/lcd.h */
|
||||
struct spi_dev_s; /* See include/nuttx/spi/spi.h */
|
||||
FAR struct lcd_dev_s *ssd1306_initialize(FAR struct spi_dev_s *spi, unsigned int devno);
|
||||
#ifdef CONFIG_LCD_SSD1306_SPI
|
||||
FAR struct lcd_dev_s *ssd1306_initialize(FAR struct spi_dev_s *dev, unsigned int devno);
|
||||
#else
|
||||
FAR struct lcd_dev_s *ssd1306_initialize(FAR struct i2c_dev_s *dev, unsigned int devno);
|
||||
#endif
|
||||
|
||||
/************************************************************************************************
|
||||
* Name: ssd1306_fill
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user