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boards/arm/stm32/stm32f103-minimum/: Add support to LCD1602 using PCF8574 Backpack board.

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This commit is contained in:
Alan Carvalho de Assis 2019-12-13 12:10:17 -06:00 committed by Gregory Nutt
parent a4a23ef584
commit 3840889b11
5 changed files with 222 additions and 0 deletions
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71
boards/arm/stm32/stm32f103-minimum/configs/lcd1602/defconfig Normal file
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@ -0,0 +1,71 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_DISABLE_OS_API is not set
# CONFIG_NSH_DISABLESCRIPT is not set
# CONFIG_NSH_DISABLE_DD is not set
# CONFIG_NSH_DISABLE_EXEC is not set
# CONFIG_NSH_DISABLE_EXIT is not set
# CONFIG_NSH_DISABLE_GET is not set
# CONFIG_NSH_DISABLE_HEXDUMP is not set
# CONFIG_NSH_DISABLE_MKRD is not set
# CONFIG_NSH_DISABLE_PS is not set
# CONFIG_NSH_DISABLE_PUT is not set
# CONFIG_NSH_DISABLE_WGET is not set
# CONFIG_NSH_DISABLE_XD is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="stm32f103-minimum"
CONFIG_ARCH_BOARD_STM32F103_MINIMUM=y
CONFIG_ARCH_CHIP="stm32"
CONFIG_ARCH_CHIP_STM32=y
CONFIG_ARCH_CHIP_STM32F103C8=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARD_LOOPSPERMSEC=5483
CONFIG_BUILTIN=y
CONFIG_DEFAULT_SMALL=y
CONFIG_EXAMPLES_SLCD=y
CONFIG_I2C=y
CONFIG_I2CTOOL_DEFFREQ=100000
CONFIG_I2CTOOL_MAXBUS=1
CONFIG_I2CTOOL_MINBUS=1
CONFIG_LCD_BACKPACK=y
CONFIG_LCD_LCD1602=y
CONFIG_MAX_TASKS=16
CONFIG_MAX_WDOGPARMS=2
CONFIG_NFILE_DESCRIPTORS=8
CONFIG_NFILE_STREAMS=8
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=1024
CONFIG_NSH_LINELEN=80
CONFIG_PREALLOC_MQ_MSGS=4
CONFIG_PREALLOC_TIMERS=4
CONFIG_PREALLOC_WDOGS=4
CONFIG_RAM_SIZE=20480
CONFIG_RAM_START=0x20000000
CONFIG_RAW_BINARY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_HPWORK=y
CONFIG_SCHED_HPWORKPRIORITY=192
CONFIG_SCHED_WAITPID=y
CONFIG_SDCLONE_DISABLE=y
CONFIG_SERIAL_TERMIOS=y
CONFIG_SLCD=y
CONFIG_START_DAY=5
CONFIG_START_MONTH=7
CONFIG_START_YEAR=2011
CONFIG_STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG=y
CONFIG_STM32_I2C1=y
CONFIG_STM32_JTAG_FULL_ENABLE=y
CONFIG_STM32_USART1=y
CONFIG_SYMTAB_ORDEREDBYNAME=y
CONFIG_SYSTEM_I2CTOOL=y
CONFIG_SYSTEM_NSH=y
CONFIG_TASK_NAME_SIZE=0
CONFIG_USART1_SERIAL_CONSOLE=y
CONFIG_USER_ENTRYPOINT="nsh_main"
CONFIG_WDOG_INTRESERVE=0

4
boards/arm/stm32/stm32f103-minimum/src/Makefile
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@ -69,6 +69,10 @@ ifeq ($(CONFIG_SENSORS_ZEROCROSS),y)
CSRCS += stm32_zerocross.c
endif
ifeq ($(CONFIG_LCD_BACKPACK),y)
CSRCS += stm32_lcd_backpack.c
endif
ifeq ($(CONFIG_LEDS_APA102),y)
CSRCS += stm32_apa102.c
endif

9
boards/arm/stm32/stm32f103-minimum/src/stm32_bringup.c
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@ -165,6 +165,15 @@ int stm32_bringup(void)
}
#endif
#ifdef CONFIG_LCD_BACKPACK
ret = stm32_lcd_backpack_init("/dev/slcd0");
if (ret < 0)
{
syslog(LOG_ERR, "Failed to initialize PCF8574 LCD, error %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_SENSORS_ZEROCROSS
/* Configure the zero-crossing driver */

126
boards/arm/stm32/stm32f103-minimum/src/stm32_lcd_backpack.c Normal file
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@ -0,0 +1,126 @@
/****************************************************************************
* 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 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%d driver: %d\n", bus, 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
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@ -440,6 +440,18 @@ int stm32_apa102init(FAR const char *devpath);
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
*