sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

stm32/common: Common LCD1602 based on PCF8574 Backpack

Browse Source
This commit is contained in:
Alan C. Assis 2021-03-14 19:04:43 -03:00 committed by Xiang Xiao
parent 43bce6d9b0
commit 0fb2059fd9
7 changed files with 191 additions and 143 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
boards/arm/stm32/common/include/stm32_lcd_backpack.h Normal file
View File

@ -0,0 +1,83 @@
/****************************************************************************
* boards/arm/stm32/common/include/stm32_lcd_backpack.h
*
* 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.
*
****************************************************************************/
#ifndef __STM32_LCD_BACKPACK_H
#define __STM32_LCD_BACKPACK_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Type Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Inline Functions
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_lcd_backpack_init
*
* Description:
* Initialize the LCD1602 display controlled by Backpack with PCF8574
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/slcd0"
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int board_lcd_backpack_init(int devno, int busno, int rows, int cols);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __STM32_LCD_BACKPACK_H */

4
boards/arm/stm32/common/src/Make.defs
View File

@ -46,6 +46,10 @@ ifeq ($(CONFIG_AUDIO_TONE),y)
CSRCS += stm32_tone.c
endif
ifeq ($(CONFIG_LCD_BACKPACK),y)
CSRCS += stm32_lcd_backpack.c
endif
ifeq ($(CONFIG_LCD_SSD1306),y)
CSRCS += stm32_ssd1306.c
endif

97
boards/arm/stm32/common/src/stm32_lcd_backpack.c Normal file
View File

@ -0,0 +1,97 @@
/****************************************************************************
* boards/arm/stm32/common/src/stm32_lcd_backpack.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 <errno.h>
#include <debug.h>
#include <syslog.h>
#include <stdio.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/lcd/pcf8574_lcd_backpack.h>
#include "stm32_i2c.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_lcd_backpack_init
*
* Description:
* Initialize the LCD1602 display controlled by Backpack with PCF8574
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/slcd0"
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int board_lcd_backpack_init(int devno, int busno, int rows, int cols)
{
FAR struct pcf8574_lcd_backpack_config_s cfg =
LCD_I2C_BACKPACK_CFG_SAINSMART;
FAR struct i2c_master_s *i2c;
char devpath[12];
int ret;
/* Setup the LCD row and cols size.
* Note: We are using the LCD_I2C_BACKPACK_CFG_SAINSMART config that
* defined the I2C Address to 0x27 to PCF8574. Double check if all
* the bits (pins) from PCF8574 connected to the LCD controller
* are correct with this LCD CFG definition.
*/
cfg.rows = rows;
cfg.cols = cols;
/* Initialize the I2C1 */
i2c = stm32_i2cbus_initialize(busno);
if (i2c == NULL)
{
return -ENODEV;
}
/* Regiter the Segment LCD */
snprintf(devpath, 12, "/dev/slcd%d", devno);
ret = pcf8574_lcd_backpack_register(devpath, i2c, &cfg);
if (ret < 0)
{
lcderr("ERROR: pcf8574_lcd_backpack_register(%s) failed: %d\n",
devpath, ret);
return ret;
}
return OK;
}

4
boards/arm/stm32/stm32f103-minimum/src/Make.defs
View File

@ -67,10 +67,6 @@ ifeq ($(CONFIG_PWM),y)
CSRCS += stm32_pwm.c
endif
ifeq ($(CONFIG_LCD_BACKPACK),y)
CSRCS += stm32_lcd_backpack.c
endif
ifeq ($(CONFIG_RGBLED),y)
CSRCS += stm32_rgbled.c
endif

8
boards/arm/stm32/stm32f103-minimum/src/stm32_bringup.c
View File

@ -137,6 +137,10 @@
#include "board_qencoder.h"
#endif
#ifdef CONFIG_LCD_BACKPACK
#include "stm32_lcd_backpack.h"
#endif
#ifdef CONFIG_USBADB
#include <nuttx/usb/adb.h>
#endif
@ -224,7 +228,9 @@ int stm32_bringup(void)
#endif
#ifdef CONFIG_LCD_BACKPACK
ret = stm32_lcd_backpack_init("/dev/slcd0");
/* slcd:0, i2c:1, rows=2, cols=16 */
ret = board_lcd_backpack_init(0, 1, 2, 16);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to initialize PCF8574 LCD, error %d\n", ret);

126
boards/arm/stm32/stm32f103-minimum/src/stm32_lcd_backpack.c
View File

@ -1,126 +0,0 @@
/****************************************************************************
* boards/arm/stm32/stm32f103-minimum/src/stm32_lcd_backpack.c
*
* Copyright (C) 2019 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 <errno.h>
#include <debug.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/lcd/pcf8574_lcd_backpack.h>
#include "stm32.h"
#include "stm32f103_minimum.h"
#if defined(CONFIG_I2C) && defined(CONFIG_LCD_BACKPACK)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define LCDBP_I2C_PORTNO 1 /* PCF8574 connected to I2C1 */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_lcd_backpack_init
*
* Description:
* Initialize the LCD1602 display controlled by Backpack with PCF8574
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/slcd0"
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int stm32_lcd_backpack_init(FAR const char *devpath)
{
FAR struct pcf8574_lcd_backpack_config_s cfg =
LCD_I2C_BACKPACK_CFG_SAINSMART;
FAR struct i2c_master_s *i2c;
int ret;
/* Setup the LCD row and cols size.
* Note: We are using the LCD_I2C_BACKPACK_CFG_SAINSMART config that
* defined the I2C Address to 0x27 to PCF8574. Double check if all
* the bits (pins) from PCF8574 connected to the LCD controller
* are correct with this LCD CFG definition.
*/
cfg.rows = 2;
cfg.cols = 16;
/* Initialize the I2C1 */
i2c = stm32_i2cbus_initialize(LCDBP_I2C_PORTNO);
if (i2c == NULL)
{
return -ENODEV;
}
#ifdef CONFIG_I2C_DRIVER
/* Register the I2C to get the "nsh> i2c bus" command working */
ret = i2c_register(i2c, LCDBP_I2C_PORTNO);
if (ret < 0)
{
rtcerr("ERROR: Failed to register I2C driver: %d\n", ret);
return -ENODEV;
}
#endif
/* Register the LCD BACKPACK PCF8574 driver at the specified location. */
ret = pcf8574_lcd_backpack_register(devpath, i2c, &cfg);
if (ret < 0)
{
lcderr("ERROR: pcf8574_lcd_backpack_register(%s) failed: %d\n",
devpath, ret);
return ret;
}
return OK;
}
#endif /* CONFIG_I2C && CONFIG_LCD_BACKPACK */

12
boards/arm/stm32/stm32f103-minimum/src/stm32f103_minimum.h
View File

@ -317,18 +317,6 @@ int stm32_rgbled_setup(void);
int stm32_mcp2515initialize(FAR const char *devpath);
#endif
/****************************************************************************
* Name: stm32_lcd_backpack_init
*
* Description:
* Initialize and register the PCF8574 LCD Backpack driver.
*
****************************************************************************/
#ifdef CONFIG_LCD_BACKPACK
int stm32_lcd_backpack_init(FAR const char *devpath);
#endif
/****************************************************************************
* Name: stm32_usbinitialize
*