rftest-tx.c

/*
 * Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors
 * to the MC1322x project (http://mc1322x.devl.org)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of libmc1322x: see http://mc1322x.devl.org
 * for details. 
 *
 *
 */

#include <mc1322x.h>
#include <board.h>
#include <stdio.h>

#include "tests.h"
#include "config.h"

#define LED LED_RED

/* 802.15.4 PSDU is 127 MAX */
/* 2 bytes are the FCS */
/* therefore 125 is the max payload length */
#define PAYLOAD_LEN 16
#define DELAY 100000

void fill_packet(volatile packet_t *p) {
        static volatile uint8_t count=0;
        volatile uint8_t i;
        p->length = PAYLOAD_LEN;
        p->offset = 0;
        for(i=0; i<PAYLOAD_LEN; i++) {
                p->data[i] = count++;
        }

        /* acks get treated differently, even in promiscuous mode */
        /* setting the third bit makes sure that we never send an ack */
        /* or any valid 802.15.4-2006 packet */
        p->data[0] |= (1 << 3); 
}

void main(void) {
        volatile uint32_t i;
        volatile packet_t *p;

        /* trim the reference osc. to 24MHz */
        trim_xtal();

        uart_init(INC, MOD, SAMP);

        vreg_init();

        maca_init();

        set_channel(0); /* channel 11 */
//      set_power(0x0f); /* 0xf = -1dbm, see 3-22 */
//      set_power(0x11); /* 0x11 = 3dbm, see 3-22 */
        set_power(0x12); /* 0x12 is the highest, not documented */

        /* sets up tx_on, should be a board specific item */
        *GPIO_FUNC_SEL2 = (0x01 << ((44-16*2)*2));
        gpio_pad_dir_set( 1ULL << 44 );

        print_welcome("rftest-tx");

        while(1) {              
                        
                /* call check_maca() periodically --- this works around */
                /* a few lockup conditions */
                check_maca();

                while((p = rx_packet())) {
                        if(p) free_packet(p);
                }

                p = get_free_packet();
                if(p) {
                        fill_packet(p);
                        
                        printf("rftest-tx --- ");
                        print_packet(p);

                        tx_packet(p);
                        
                        for(i=0; i<DELAY; i++) { continue; }
                }
                
        }

}