/**
* \brief Radio RF233 process, infinitely awaits a poll, then checks radio
* state and handles received data.
*/
PROCESS_THREAD(rf233_radio_process, ev, data)
{
int len;
PROCESS_BEGIN();
PRINTF("RF233: started.\r\n");
while(1) {
PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
PRINTF("RF233: polled.\r\n");
if(interrupt_callback_wants_poll) {
rf233_interrupt_poll();
}
packetbuf_clear();
// packetbuf_set_attr(PACKETBUF_ATTR_TIMESTAMP, last_packet_timestamp);
len = rf233_read(packetbuf_dataptr(), PACKETBUF_SIZE);
if(len > 0) {
packetbuf_set_datalen(len);
NETSTACK_RDC.input();
} else {
PRINTF("RF233: error while reading: %d\r\n", len);
}
}
PROCESS_END();
}
void interrupt_callback() {
volatile uint8_t irq_source;
PRINTF("RF233: interrupt handler.\n");
/* handle IRQ source (for what IRQs are enabled, see rf233-config.h) */
irq_source = trx_reg_read(RF233_REG_IRQ_STATUS);
PRINTF(" interrupt sources: 0x%x\n", (int)irq_source);
if (irq_source & IRQ_PLL_LOCK) {
PRINTF("RF233: PLL locked.\n");
radio_pll = true;
return;
} else if (irq_source == IRQ_RX_START) {
PRINTF("RF233: Interrupt receive start.\n");
} else if (irq_source == IRQ_TRX_DONE) {
PRINTF("RF233: TRX_DONE handler.\n");
// Completed a transmission
if (flag_transmit != 0) {
PRINTF("RF233: Interrupt transmit.\n");
flag_transmit = 0;
if (!(trx_reg_read(RF233_REG_TRX_STATE) & TRX_STATE_TRAC_STATUS)) {
flag_transmit = ack_status = 1;
}
RF233_COMMAND(TRXCMD_RX_ON);
PRINTF("RF233: TX complete, go back to RX with acks on.\n");
radio_tx = true;
return;
} else {
//PRINTF("RF233: Interrupt receive.\n");
packetbuf_clear();
pending_frame = 1;
int len = rf233_read(packetbuf_dataptr(), MAX_PACKET_LEN);
if (len > 0) {
PRINTF("RF233: Received packet and read from device.\n\n");
} else {
PRINTF("RF233: Read failed.\n\n");
}
radio_rx = true;
return;
}
}
}
