stm32f401rc-rs485: Add rs-485 master mode configuration
This commit is contained in:
Rodrigo Sim
Alan Carvalho de Assis
parent
5c118967bb
commit
f4d500f436
@ -314,3 +314,69 @@ generated by STM32F401RC-RS485 and transmitted over RS-485::
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[1002]: 0
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[1003]: 0
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modbus_master
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-------------
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Configures the NuttShell (nsh) and enables modbus in msater mode. This
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configuration enables a serial console on USART6. The RS-485 is connected
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to USART2. Follow below precedure to use modbusmaster test aplication, you will
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need a USB to RS-485 converter to connect the board to a PC via RS-485.
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PC Configuration:
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Download and install diagslave aplication from https://www.modbusdriver.com/diagslave.html.
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Check which TTY USB port is being used by you USB to RS-485 converter::
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sudo dmesg
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[99846.668209] usb 1-1.3: Product: USB Serial
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[99846.676313] ch341 1-1.3:1.0: ch341-uart converter detected
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[99846.677454] usb 1-1.3: ch341-uart converter now attached to ttyUSB1
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Run the diagslave as below::
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sudo diagslave -a 10 -b 38400 /dev/ttyUSB1
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At PC terminal you will see the diagslave application listening to address 10,
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notice that this address is configurable via MODBUSMASTER_SLAVEADDR::
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diagslave 3.4 - FieldTalk(tm) Modbus(R) Diagnostic Slave Simulator
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Copyright (c) 2002-2021 proconX Pty Ltd
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Visit https://www.modbusdriver.com for Modbus libraries and tools.
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Protocol configuration: Modbus RTU, frame tolerance = 0ms
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Slave configuration: address = 10, master activity t/o = 3.00s
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Serial port configuration: /dev/ttyUSB1, 38400, 8, 1, even
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Server started up successfully.
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Listening to network (Ctrl-C to stop)
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Slave 10: readHoldingRegisters from 2, 1 references
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.......
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NuttShell configuration:
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Run modbusmaster application at NSH::
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NuttShell (NSH) NuttX-12.4.0
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nsh> modbusmaster
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Initializing modbus master...
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Creating poll thread.
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Sending 100 requests to slave 10
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mbmaster_main: Exiting poll thread.
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Modbus master statistics:
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Requests count: 100
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Responses count: 100
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Errors count: 0
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Deinitializing modbus master...
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The application modbusmaster will send 100 requests, you can check on diagslave::
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Server started up successfully.
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Listening to network (Ctrl-C to stop)
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Slave 10: readHoldingRegisters from 2, 1 references
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Slave 10: readHoldingRegisters from 2, 1 references
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Slave 10: readHoldingRegisters from 2, 1 references
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Slave 10: readHoldingRegisters from 2, 1 references
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Slave 10: readHoldingRegisters from 2, 1 references
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Slave 10: readHoldingRegisters from 2, 1 references
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Slave 10: readHoldingRegisters from 2, 1 references
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@ -0,0 +1,77 @@
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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_MB_MASTER_FUNC_READWRITE_HOLDING_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_READ_COILS_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_READ_DISCRETE_INPUTS_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_READ_INPUT_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_WRITE_COIL_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_WRITE_HOLDING_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_WRITE_MULTIPLE_COILS_ENABLED is not set
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# CONFIG_MB_MASTER_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED 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_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_BOARD_LOOPSPERMSEC=8499
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CONFIG_BUILTIN=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_NAME3="SW6"
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CONFIG_EXAMPLES_BUTTONS_NAMES=y
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CONFIG_EXAMPLES_BUTTONS_QTD=4
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CONFIG_EXAMPLES_MODBUSMASTER=y
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CONFIG_EXAMPLES_MODBUSMASTER_SLAVEADDR=10
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CONFIG_HAVE_CXX=y
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CONFIG_HAVE_CXXINITIALIZE=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_MB_RTU_MASTER=y
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CONFIG_MODBUS=y
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CONFIG_MODBUS_MASTER=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_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_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_USART2=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_USART2_BAUD=38400
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CONFIG_USART2_PARITY=2
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CONFIG_USART2_RS485=y
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CONFIG_USART6_SERIAL_CONSOLE=y
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