menu "Modbus configuration" config FMB_COMM_MODE_RTU_EN bool "Enable Modbus stack support for RTU mode" default y help Enable RTU Modbus communication mode option for Modbus serial stack. config FMB_COMM_MODE_ASCII_EN bool "Enable Modbus stack support for ASCII mode" default y help Enable ASCII Modbus communication mode option for Modbus serial stack. config FMB_MASTER_TIMEOUT_MS_RESPOND int "Slave respond timeout (Milliseconds)" default 150 range 50 400 help If master sends a frame which is not broadcast, it has to wait sometime for slave response. if slave is not respond in this time, the master will process timeout error. config FMB_MASTER_DELAY_MS_CONVERT int "Slave conversion delay (Milliseconds)" default 200 range 50 400 help If master sends a broadcast frame, it has to wait conversion time to delay, then master can send next frame. config FMB_QUEUE_LENGTH int "Modbus serial task queue length" range 0 200 default 20 help Modbus serial driver queue length. It is used by event queue task. See the serial driver API for more information. config FMB_SERIAL_TASK_STACK_SIZE int "Modbus serial task stack size" range 768 8192 default 2048 help Modbus serial task stack size for event queue task. It may be adjusted when debugging is enabled (for example). config FMB_SERIAL_BUF_SIZE int "Modbus serial task RX/TX buffer size" range 0 2048 default 256 help Modbus serial task RX and TX buffer size for UART driver initialization. This buffer is used for modbus frame transfer. The Modbus protocol maximum frame size is 256 bytes. Bigger size can be used for non standard implementations. config FMB_SERIAL_ASCII_BITS_PER_SYMB int "Number of data bits per ASCII character" default 8 range 7 8 depends on FMB_COMM_MODE_ASCII_EN help This option defines the number of data bits per ASCII character. config FMB_SERIAL_ASCII_TIMEOUT_RESPOND_MS int "Response timeout for ASCII communication mode (ms)" default 1000 range 300 2000 depends on FMB_COMM_MODE_ASCII_EN help This option defines response timeout of slave in milliseconds for ASCII communication mode. Thus the timeout will expire and allow the master’s program to handle the error. config FMB_SERIAL_TASK_PRIO int "Modbus serial task priority" range 3 10 default 10 help Modbus UART driver event task priority. The priority of Modbus controller task is equal to (CONFIG_FMB_SERIAL_TASK_PRIO - 1). config FMB_CONTROLLER_SLAVE_ID_SUPPORT bool "Modbus controller slave ID support" default n help Modbus slave ID support enable. When enabled the Modbus command is supported by stack. config FMB_CONTROLLER_SLAVE_ID hex "Modbus controller slave ID" range 0 4294967295 default 0x00112233 depends on FMB_CONTROLLER_SLAVE_ID_SUPPORT help Modbus slave ID value to identify modbus device in the network using command. Most significant byte of ID is used as short device ID and other three bytes used as long ID. config FMB_CONTROLLER_NOTIFY_TIMEOUT int "Modbus controller notification timeout (ms)" range 0 200 default 20 help Modbus controller notification timeout in milliseconds. This timeout is used to send notification about accessed parameters. config FMB_CONTROLLER_NOTIFY_QUEUE_SIZE int "Modbus controller notification queue size" range 0 200 default 20 help Modbus controller notification queue size. The notification queue is used to get information about accessed parameters. config FMB_CONTROLLER_STACK_SIZE int "Modbus controller stack size" range 0 8192 default 4096 help Modbus controller task stack size. The Stack size may be adjusted when debug mode is used which requires more stack size (for example). config FMB_EVENT_QUEUE_TIMEOUT int "Modbus stack event queue timeout (ms)" range 0 500 default 20 help Modbus stack event queue timeout in milliseconds. This may help to optimize Modbus stack event processing time. config FMB_TIMER_PORT_ENABLED bool "Modbus slave stack use timer for 3.5T symbol time measurement" default y help If this option is set the Modbus stack uses timer for T3.5 time measurement. Else the internal UART TOUT timeout is used for 3.5T symbol time measurement. config FMB_TIMER_GROUP int "Modbus Timer group number" range 0 1 default 0 help Modbus Timer group number that is used for timeout measurement. config FMB_TIMER_INDEX int "Modbus Timer index in the group" range 0 1 default 0 help Modbus Timer Index in the group that is used for timeout measurement. config FMB_TIMER_ISR_IN_IRAM bool "Place timer interrupt handler into IRAM" default n select UART_ISR_IN_IRAM help This option places Modbus timer IRQ handler into IRAM. This allows to avoid delays related to processing of non-IRAM-safe interrupts during a flash write operation (NVS updating a value, or some other flash API which has to perform an read/write operation and disable CPU cache). This option has dependency with the UART_ISR_IN_IRAM option which places UART interrupt handler into IRAM to prevent delays related to processing of UART events. endmenu