arm/stm32f401rc-rs485: Add support to LCD 16x2 with I2C Backpack
Signed-off-by: Rodrigo Sim rcsim10@gmail.com
This commit is contained in:
Rodrigo Sim
Alan C. Assis
parent
10b40abecc
commit
a5754a2f03
@ -699,6 +699,13 @@ Configures the NuttShell (nsh) over USB Serial (check usbserial configuration) a
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BMP280 has an I2C address that can be configure by SDO. Connecting SDO to GND results in slave
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address 0x76, connection it to VDD results in slave address 0x77. This can be configured by enabling BMP280_I2C_ADDR_76 or BMP280_I2C_ADDR_77. This configuration uses I2C1 and slave address 0x77.
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======= =====
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SENSOR PINS
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======= =====
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SDA PA7
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SCK PB8
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======= =====
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NSH commands::
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NuttShell (NSH) NuttX-12.6.0-RC1
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@ -709,4 +716,38 @@ NSH commands::
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Absolute pressure [hPa] = 932.650024
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Temperature [C] = 24.490000
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There is a known issue where every time the sensor is initialized, the first measurement is wrong, please check https://github.com/apache/nuttx/issues/12421 for the latest updates on this issue.
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There is a known issue where every time the sensor is initialized, the first measurement is wrong, please check https://github.com/apache/nuttx/issues/12421 for the latest updates on this issue.
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lcd1602
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-------
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This configuration sets up the NuttShell (NSH) interface over USB Serial (refer to the usbserial
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configuration for details). It also enables I2C1 and the driver for an alphanumeric/segment LCD.
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Specifically, the setup supports a 16x2 LCD screen based on the HD44780 controller, which is
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interfaced using an I2C adapter known as the LCD Backpack, utilizing the PCF8574 chip.
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======= =====
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LCD PINS
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======= =====
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SDA PA7
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SCK PB8
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======= =====
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NSH commands::
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nsh> slcd "Hello NuttX"
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Opening /dev/slcd0 for read/write access
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Attributes:
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rows: 2 columns: 16 nbars: 0
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max contrast: 0 max brightness: 1
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Clear screen
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WRITING:
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0000: 1b5b46 .[F
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Set brightness to 1
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Print [Hello NuttX]
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WRITING:
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0000: 1b5b471b5b30304c1b5b4548656c6c6f 204e75747458 .[G.[00L.[EHello NuttX
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Test complete
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nsh>
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68
boards/arm/stm32/stm32f401rc-rs485/configs/lcd1602/defconfig
Normal file
68
boards/arm/stm32/stm32f401rc-rs485/configs/lcd1602/defconfig
Normal file
@ -0,0 +1,68 @@
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#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_ARCH_FPU is not set
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# CONFIG_NSH_ARGCAT is not set
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# CONFIG_NSH_CMDOPT_HEXDUMP is not set
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# CONFIG_NSH_DISABLE_IFCONFIG is not set
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# CONFIG_NSH_DISABLE_PS is not set
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CONFIG_ARCH="arm"
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CONFIG_ARCH_BOARD="stm32f401rc-rs485"
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CONFIG_ARCH_BOARD_COMMON=y
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CONFIG_ARCH_BOARD_STM32F401RC_RS485=y
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CONFIG_ARCH_BUTTONS=y
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CONFIG_ARCH_CHIP="stm32"
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CONFIG_ARCH_CHIP_STM32=y
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CONFIG_ARCH_CHIP_STM32F401RC=y
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CONFIG_ARCH_INTERRUPTSTACK=2048
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CONFIG_ARCH_IRQBUTTONS=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_BOARDCTL_USBDEVCTRL=y
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CONFIG_BOARD_LOOPSPERMSEC=8499
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CONFIG_BUILTIN=y
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CONFIG_CDCACM=y
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CONFIG_CDCACM_CONSOLE=y
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CONFIG_EXAMPLES_BUTTONS=y
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CONFIG_EXAMPLES_BUTTONS_NAME0="SW3"
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CONFIG_EXAMPLES_BUTTONS_NAME1="SW4"
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CONFIG_EXAMPLES_BUTTONS_NAME2="SW5"
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CONFIG_EXAMPLES_BUTTONS_NAMES=y
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CONFIG_EXAMPLES_BUTTONS_QTD=3
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CONFIG_EXAMPLES_SLCD=y
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CONFIG_HAVE_CXX=y
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CONFIG_HAVE_CXXINITIALIZE=y
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CONFIG_I2C=y
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CONFIG_INIT_ENTRYPOINT="nsh_main"
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CONFIG_INPUT=y
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CONFIG_INPUT_BUTTONS=y
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CONFIG_INPUT_BUTTONS_LOWER=y
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CONFIG_INTELHEX_BINARY=y
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CONFIG_LCD_BACKPACK=y
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CONFIG_NSH_ARCHINIT=y
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CONFIG_NSH_BUILTIN_APPS=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_LINELEN=64
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CONFIG_NSH_READLINE=y
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CONFIG_PREALLOC_TIMERS=4
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CONFIG_RAM_SIZE=98304
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CONFIG_RAM_START=0x20000000
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CONFIG_RAW_BINARY=y
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CONFIG_RR_INTERVAL=200
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CONFIG_SCHED_WAITPID=y
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CONFIG_SLCD=y
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CONFIG_SPI=y
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CONFIG_START_DAY=5
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CONFIG_START_MONTH=5
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CONFIG_START_YEAR=2014
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CONFIG_STM32_I2C1=y
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CONFIG_STM32_JTAG_SW_ENABLE=y
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CONFIG_STM32_OTGFS=y
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CONFIG_STM32_PWR=y
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CONFIG_STM32_USART6=y
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CONFIG_SYSTEM_NSH=y
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CONFIG_TASK_NAME_SIZE=0
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CONFIG_USBDEV=y
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@ -79,6 +79,10 @@
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#include "stm32_bmp280.h"
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#endif
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#ifdef CONFIG_LCD_BACKPACK
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#include "stm32_lcd_backpack.h"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@ -313,5 +317,16 @@ int stm32_bringup(void)
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}
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#endif
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#ifdef CONFIG_LCD_BACKPACK
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/* slcd:0, i2c:1, rows=2, cols=16 */
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ret = board_lcd_backpack_init(0, 1, 2, 16);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize PCF8574 LCD, error %d\n", ret);
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return ret;
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}
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#endif
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return ret;
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}
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