void check_maca(void) {
safe_irq_disable(MACA);
static volatile uint32_t last_time;
static volatile uint32_t last_entry;
volatile uint32_t i;
#if DEBUG_MACA
volatile uint32_t count;
#endif
/* if *MACA_CLK == last_time */
/* try waiting for one clock period */
/* since maybe check_maca is getting called quickly */
for(i=0; (i < 1024) && (*MACA_CLK == last_time); i++) {
continue;
}
if(*MACA_CLK == last_time) {
PRINTF("check maca: maca_clk stopped, restarting\n");
/* clock isn't running */
ResumeMACASync();
*INTFRC = (1<<INT_NUM_MACA);
} else {
if((last_time > (*MACA_SFTCLK + RECV_SOFTIMEOUT)) &&
(last_time > (*MACA_CPLCLK + CPL_TIMEOUT))) {
PRINTF("check maca: complete clocks expired\n");
/* all complete clocks have expired */
/* check that maca entry is changing */
/* if not, do call the isr to restart the cycle */
if(last_entry == maca_entry) {
PRINTF("check maca: forcing isr\n");
*INTFRC = (1<<INT_NUM_MACA);
}
}
}
last_entry = maca_entry;
last_time = *MACA_CLK;
#if DEBUG_MACA
if((count = count_packets()) != NUM_PACKETS) {
PRINTF("check maca: count_packets %d\n", count);
Print_Packets("check_maca");
#if PACKET_STATS
for(i=0; i<NUM_PACKETS; i++) {
printf("packet 0x%lx seen %d post_tx %d get_free %d rxd %d\n",
(uint32_t) &packet_pool[i],
packet_pool[i].seen,
packet_pool[i].post_tx,
packet_pool[i].get_free,
packet_pool[i].rxd);
}
#endif
if(bit_is_set(*NIPEND, INT_NUM_MACA)) {
*INTFRC = (1 << INT_NUM_MACA);
}
}
#endif /* DEBUG_MACA */
irq_restore();
}
void maca_init(void) {
reset_maca();
radio_init();
flyback_init();
init_phy();
free_head = 0;
tx_head = 0;
rx_head = 0;
rx_end = 0;
tx_end = 0;
dma_tx = 0;
dma_rx = 0;
free_all_packets();
#if DEBUG_MACA
Print_Packets("maca_init");
#endif
/* initial radio command */
/* nop, promiscuous, no cca */
*MACA_CONTROL = (1 << PRM) | (NO_CCA << MODE);
enable_irq(MACA);
*INTFRC = (1 << INT_NUM_MACA);
}
void maca_init(void) {
reset_maca();
radio_init();
flyback_init();
init_phy();
set_channel(0); /* things get weird if you never set a channel */
set_power(0); /* set the power too --- who knows what happens if you don't */
free_head = 0;
tx_head = 0;
rx_head = 0;
rx_end = 0;
tx_end = 0;
dma_tx = 0;
dma_rx = 0;
free_all_packets();
#if DEBUG_MACA
Print_Packets("maca_init");
#endif
/* initial radio command */
/* nop, promiscuous, no cca */
*MACA_CONTROL =
(prm_mode << PRM) |
(NO_CCA << MACA_MODE);
enable_irq(MACA);
*INTFRC = (1 << INT_NUM_MACA);
}
