159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
/****************************************************************************
|
|
* boards/arm/stm32/common/src/stm32_ssd1306.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/board.h>
|
|
#include <nuttx/lcd/lcd.h>
|
|
#include <nuttx/lcd/ssd1306.h>
|
|
#include <nuttx/i2c/i2c_master.h>
|
|
#include <nuttx/spi/spi.h>
|
|
|
|
#include "stm32_i2c.h"
|
|
#include "stm32_spi.h"
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
static struct lcd_dev_s *g_lcddev;
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: board_ssd1306_initialize
|
|
*
|
|
* Description:
|
|
* Initialize and register the device. I2C version.
|
|
*
|
|
* Input Parameters:
|
|
* busno - The I2C bus number
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
****************************************************************************/
|
|
#ifdef CONFIG_LCD_SSD1306_I2C
|
|
int board_ssd1306_initialize(int busno)
|
|
{
|
|
struct i2c_master_s *i2c;
|
|
const int devno = 0;
|
|
|
|
/* Initialize I2C */
|
|
|
|
i2c = stm32_i2cbus_initialize(busno);
|
|
if (!i2c)
|
|
{
|
|
lcderr("ERROR: Failed to initialize I2C port %d\n", busno);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Bind the I2C port to the OLED */
|
|
|
|
g_lcddev = ssd1306_initialize(i2c, NULL, devno);
|
|
if (!g_lcddev)
|
|
{
|
|
lcderr("ERROR: Failed to bind I2C port %d to OLED %d\n", busno, devno);
|
|
return -ENODEV;
|
|
}
|
|
else
|
|
{
|
|
lcdinfo("Bound I2C port %d to OLED %d\n", busno, devno);
|
|
|
|
/* And turn the OLED on */
|
|
|
|
g_lcddev->setpower(g_lcddev, CONFIG_LCD_MAXPOWER);
|
|
return OK;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: board_ssd1306_initialize
|
|
*
|
|
* Description:
|
|
* Initialize and register the device. SPI version.
|
|
*
|
|
* Input Parameters:
|
|
* busno - The SPI bus number
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
****************************************************************************/
|
|
#ifdef CONFIG_LCD_SSD1306_SPI
|
|
int board_ssd1306_initialize(int busno)
|
|
{
|
|
struct spi_dev_s *spi;
|
|
const int devno = 0;
|
|
|
|
/* Initialize SPI */
|
|
|
|
spi = stm32_spibus_initialize(busno);
|
|
if (!spi)
|
|
{
|
|
lcderr("ERROR: Failed to initialize SPI port %d\n", busno);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Bind the SPI port to the OLED */
|
|
|
|
g_lcddev = ssd1306_initialize(spi, NULL, devno);
|
|
if (!g_lcddev)
|
|
{
|
|
lcderr("ERROR: Failed to bind SPI port %d to OLED %d\n", busno, devno);
|
|
return -ENODEV;
|
|
}
|
|
else
|
|
{
|
|
lcdinfo("Bound SPI port %d to OLED %d\n", busno, devno);
|
|
|
|
/* And turn the OLED on */
|
|
|
|
g_lcddev->setpower(g_lcddev, CONFIG_LCD_MAXPOWER);
|
|
return OK;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: board_ssd1306_getdev
|
|
*
|
|
* Description:
|
|
* Get the SSD1306 device driver instance
|
|
*
|
|
* Returned Value:
|
|
* Pointer to the instance
|
|
*
|
|
****************************************************************************/
|
|
|
|
struct lcd_dev_s *board_ssd1306_getdev(void)
|
|
{
|
|
return g_lcddev;
|
|
}
|