void kmain(void)
{
init_bss();
init_ro();
setup_kernel_memory();
setup_pages();
setup_ints();
setup_tss();
setup_paging();
setup_faults();
setup_fs();
setup_syscalls();
init_devs();
char vendor[12];
if (has_cpuid()) {
cpuid_string(0, vendor);
dprintf("CPU Vendor ID: %s\n");
}
fexec("/prgm/start", 0, NULL, NULL);
start_scheduler();
asm volatile ("sti");
asm volatile ("hlt");
/* We should never reach this */
assert(0);
}
void send()
{
wildfire_packet_t * wp;
net_packet_t * np;
uint16_t sample;
uint8_t sends;
sends = 0;
init_devs();
mos_thread_set_suspend_state(SUSPEND_STATE_SLEEP); //sets power save mode
//just wait while in init state
while (state != GO)
{
mos_mdelay(500);
}
while (1)
{
if (state == SLEEPNODE)
{
disable_wind_speed(); //must disable the ext interrupts for power save sleep
//mos_thread_set_suspend_state(SUSPEND_STATE_SLEEP); //sets power save mode
mos_thread_sleep(SLEEP_INTERVAL - 1000); //extra 1000 to make sure it wakes up early
//mos_thread_set_suspend_state(SUSPEND_STATE_IDLE); //idle mode
while (state != GO) //awake, but not ready yet.. so just wait
mos_mdelay(250);
sends = 0;
}
//first populate the buffer with the net packet since this will
//always be the header
np = (net_packet_t *)&(sendBuf.data[0]);
np->type = DATA;
np->src = myID;
np->dest = baseID;
np->next_hop = myParentID;
np->last_hop = myID;
np->seqno = mySeqNo;
np->pkt_dtb = myDTB;
np->sender_dtb = myDTB;
sendBuf.size = sizeof(net_packet_t);
//for data packets, we now populate the buffer with the
//wildfire packet information. Adding it to the end.
wp = (wildfire_packet_t *)&(sendBuf.data[sendBuf.size]);
//temp
dev_open(DEV_MICA2_TEMP);
dev_read(DEV_MICA2_TEMP, &sample, sizeof(sample));
dev_close(DEV_MICA2_TEMP);
wp->temp = convert_temp(sample);
//battery
dev_open(DEV_MICA2_BATTERY);
dev_read(DEV_MICA2_BATTERY, &sample, sizeof(sample));
dev_close(DEV_MICA2_BATTERY);
wp->battery = sample;
//humidity
humidity_on();
mos_mdelay(200); //settling time
dev_open(DEV_ADC);
dev_ioctl(DEV_ADC, ADC_SET_CHANNEL, AVR_ADC_CH_2);
dev_read(DEV_ADC, &sample, sizeof(sample));
dev_close(DEV_ADC);
humidity_off();
wp->humidity = convert_humidity(sample, wp->battery);
//wind direction
wind_dir_on();
dev_open(DEV_ADC);
dev_ioctl(DEV_ADC, ADC_SET_CHANNEL, AVR_ADC_CH_1);
dev_read(DEV_ADC, &sample, sizeof(sample));
dev_close(DEV_ADC);
wind_dir_off();
wp->wind_direction = convert_direction(sample);
//wind speed
wp->wind_speed = wind_speed;
sendBuf.size += sizeof(wildfire_packet_t);
//debug info:
/* printf("type\tsrc\tdest\tnext\tlast\tseq\tpktdtb\ts_dtb\n");
printf("%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n", np->type, np->src, np->dest, np->next_hop, np->last_hop, np->seqno, np->pkt_dtb, np->sender_dtb);
printf("temp\thmdty\tw_dir\tw_spd\tbat\n");
printf("%d\t%d\t%d\t%d\t%d\n", wp->temp, wp->humidity, wp->wind_direction, wp->wind_speed, wp->battery);
*/
if (rate == 0 || sends < rate*myDTB)
{
com_send(IFACE_RADIO, &sendBuf);
mySeqNo++;
sends++;
}
if (mySeqNo > 254)
mySeqNo = 0;
mos_mdelay(1000);
}
}
