modbus_rtu_get_rts_delay - get the current RTS delay in RTU

       Jimmy Bergström <jimmy@ekontroll.com>

       The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>

libmodbus v3.1.6                                   12/09/2019                            MODBUS_RTU_GET_RTS_D(3)

       The modbus_rtu_get_rts_delay() function shall get the current Request To Send delay period of the
       libmodbus context ctx.

       This function can only be used with a context using a RTU backend.

EINVAL
           The libmodbus backend is not RTU.

       modbus_rtu_get_rts_delay - get the current RTS delay in RTU

       The modbus_rtu_get_rts_delay() function shall return the current RTS delay in microseconds if successful.
       Otherwise it shall return -1 and set errno.

modbus_rtu_set_rts_delay(3)

intmodbus_rtu_get_rts_delay(modbus_t*ctx);