modbus_rtu_get_rts(3) ===================== NAME ---- modbus_rtu_get_rts - get the current RTS mode in RTU SYNOPSIS -------- *int modbus_rtu_get_rts(modbus_t *'ctx');* DESCRIPTION ----------- The *modbus_rtu_get_rts()* function shall get the current Request To Send mode of the libmodbus context _ctx_. The possible returned values are: * MODBUS_RTU_RTS_NONE * MODBUS_RTU_RTS_UP * MODBUS_RTU_RTS_DOWN This function can only be used with a context using a RTU backend. RETURN VALUE ------------ The function shall return the current RTS mode if successful. Otherwise it shall return -1 and set errno. ERRORS ------ *EINVAL*:: The libmodbus backend is not RTU. SEE ALSO -------- linkmb:modbus_rtu_set_rts[3] AUTHORS ------- The libmodbus documentation was written by Stéphane Raimbault