gex-core/comm/messages.c

//
// Created by MightyPork on 2017/11/21.
//

#include "platform.h"
#include "TinyFrame.h"
#include "framework/unit_registry.h"
#include "comm/messages.h"

static TinyFrame tf_;
TinyFrame *comm = &tf_;

// ---------------------------------------------------------------------------

/**
 * Ping request listener - returns version string and other info about the build
 */
static TF_Result lst_ping(TinyFrame *tf, TF_Msg *msg)
{
    com_respond_snprintf(msg->frame_id, MSG_SUCCESS, "%s/%s", GEX_VERSION, GEX_PLATFORM);
    return TF_STAY;
}

/**
 * Default listener, fallback for unhandled messages
 */
static TF_Result lst_default(TinyFrame *tf, TF_Msg *msg)
{
    dbg("!! Unhandled msg type %02"PRIx8", frame_id 0x%04"PRIx16, msg->type, msg->frame_id);

    com_respond_snprintf(msg->frame_id, MSG_ERROR, "UNKNOWN MSG %"PRIu8, msg->type);
    return TF_STAY;
}

/**
 * Unit request listener, a message targeted at a particular
 */
static TF_Result lst_unit(TinyFrame *tf, TF_Msg *msg)
{
    ureg_deliver_unit_request(msg);
    return TF_STAY;
}


static TF_Result lst_list_units(TinyFrame *tf, TF_Msg *msg)
{
    ureg_report_active_units(msg->frame_id);
    return TF_STAY;
}

// ---------------------------------------------------------------------------

void comm_init(void)
{
    TF_InitStatic(comm, TF_SLAVE);
    TF_AddTypeListener(comm, MSG_PING, lst_ping);
    TF_AddTypeListener(comm, MSG_UNIT_REQUEST, lst_unit);
    TF_AddTypeListener(comm, MSG_LIST_UNITS, lst_list_units);

    // fall-through
    TF_AddGenericListener(comm, lst_default);
}