void rf_set_channel( uint8_t channel )
{
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_pend (radio_sem);
#endif
halRfSetChannel(channel);
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_post(radio_sem);
#endif
}
void rf_set_rx(RF_RX_INFO *pRRI, uint8_t channel )
{
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_pend (radio_sem);
#endif
FASTSPI_STROBE(CC2420_SFLUSHRX);
FASTSPI_STROBE(CC2420_SFLUSHRX);
halRfSetChannel(channel);
rfSettings.pRxInfo = pRRI;
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_post(radio_sem);
#endif
}
/* ------------------------------------------------------------------------------------------------------
* mac_init()
*
* Description : MAC layer init.
*
*/
void mac_init(void)
{
/* Initialise RF radio.*/
halRfInit();
#if (0)
pib.coord_addr.mode = SHORT_ADDR;
pib.coord_addr.short_addr = 0x0000; // Net coord short address is 0x0000;
pib.coord = true;
pib.short_addr = 0x0000; // Default node short address is 0xFFFF.
pib.pan_id = 0xFFFF; // Default PAN ID is 0xFFFF.
// Read MAC address in FALSH.
HalFlashRead(HAL_FLASH_IEEE_PAGE, HAL_FLASH_IEEE_OSET, pib.ext_addr, Z_EXTADDR_LEN);
pib.assoc_permit = false; // Node's association is permit.
// pcb.mac_state = MLME_SCAN;
pib.curr_channel = 20; /* channel 20.*/
pib.rx_on_when_idle = true;
pib.max_csma_backoffs = 3;
pib.min_be = 3;
pib.dsn = (U8)halRfGetChipId(); // Random value as frame number.
pib.tmp_pan_id = 0xFFFF;
/* Write the short address and the PAN ID to the CC2520 RAM*/
halRfSetExtAddr(pib.ext_addr);
halRfSetShortAddr(pib.short_addr);
halRfSetPanId(pib.pan_id);
#endif
pib.curr_channel = 20; /* channel 20.*/
// Set channel
halRfSetChannel(pib.curr_channel);
halRfRxInterruptConfig(RfRxFrmDoneIsr);
mac_buf_init();
halRfReceiveOn();
}
//-------------------------------------------------------------------------------------------------------
// void rf_init(RF_RX_INFO *pRRI, uint8_t channel, WORD panId, WORD myAddr)
//
// DESCRIPTION:
// Initializes CC2420 for radio communication via the basic RF library functions. Turns on the
// voltage regulator, resets the CC2420, turns on the crystal oscillator, writes all necessary
// registers and protocol addresses (for automatic address recognition). Note that the crystal
// oscillator will remain on (forever).
//
// ARGUMENTS:
// RF_RX_INFO *pRRI
// A pointer the RF_RX_INFO data structure to be used during the first packet reception.
// The structure can be switched upon packet reception.
// uint8_t channel
// The RF channel to be used (11 = 2405 MHz to 26 = 2480 MHz)
// WORD panId
// The personal area network identification number
// WORD myAddr
// The 16-bit short address which is used by this node. Must together with the PAN ID form a
// unique 32-bit identifier to avoid addressing conflicts. Normally, in a 802.15.4 network, the
// short address will be given to associated nodes by the PAN coordinator.
//-------------------------------------------------------------------------------------------------------
void rf_init(RF_RX_INFO *pRRI, uint8_t channel, uint16_t panId, uint16_t myAddr)
{
uint8_t n;
#ifdef RADIO_PRIORITY_CEILING
int8_t v;
radio_sem = nrk_sem_create(1,RADIO_PRIORITY_CEILING);
if (radio_sem == NULL)
nrk_kernel_error_add (NRK_SEMAPHORE_CREATE_ERROR, nrk_get_pid ());
v = nrk_sem_pend (radio_sem);
if (v == NRK_ERROR)
{
nrk_kprintf (PSTR ("CC2420 ERROR: Access to semaphore failed\r\n"));
}
#endif
// Make sure that the voltage regulator is on, and that the reset pin is inactive
SET_VREG_ACTIVE();
halWait(1000);
SET_RESET_ACTIVE();
halWait(1);
SET_RESET_INACTIVE();
halWait(100);
// Initialize the FIFOP external interrupt
//FIFOP_INT_INIT();
//ENABLE_FIFOP_INT();
// Turn off all interrupts while we're accessing the CC2420 registers
DISABLE_GLOBAL_INT();
FASTSPI_STROBE(CC2420_SXOSCON);
mdmctrl0=0x02E2;
FASTSPI_SETREG(CC2420_MDMCTRL0, mdmctrl0); // Std Preamble, CRC, no auto ack, no hw addr decoding
//FASTSPI_SETREG(CC2420_MDMCTRL0, 0x0AF2); // Turn on automatic packet acknowledgment
// Turn on hw addre decoding
FASTSPI_SETREG(CC2420_MDMCTRL1, 0x0500); // Set the correlation threshold = 20
FASTSPI_SETREG(CC2420_IOCFG0, 0x007F); // Set the FIFOP threshold to maximum
FASTSPI_SETREG(CC2420_SECCTRL0, 0x01C4); // Turn off "Security"
FASTSPI_SETREG(CC2420_RXCTRL1, 0x1A56); // All default except
// reference bias current to RX
// bandpass filter is set to 3uA
/*
// FIXME: remove later for auto ack
myAddr=MY_MAC;
panId=0x02;
FASTSPI_SETREG(CC2420_MDMCTRL0, 0x0AF2); // Turn on automatic packet acknowledgment
// FASTSPI_SETREG(CC2420_MDMCTRL0, 0x0AE2); // Turn on automatic packet acknowledgment
nrk_spin_wait_us(500);
nrk_spin_wait_us(500);
FASTSPI_WRITE_RAM_LE(&myAddr, CC2420RAM_SHORTADDR, 2, n);
nrk_spin_wait_us(500);
FASTSPI_WRITE_RAM_LE(&panId, CC2420RAM_PANID, 2, n);
nrk_spin_wait_us(500);
printf( "myAddr=%d\r\n",myAddr );
*/
nrk_spin_wait_us(500);
FASTSPI_WRITE_RAM_LE(&panId, CC2420RAM_PANID, 2, n);
nrk_spin_wait_us(500);
ENABLE_GLOBAL_INT();
// Set the RF channel
halRfSetChannel(channel);
// Turn interrupts back on
ENABLE_GLOBAL_INT();
// Set the protocol configuration
rfSettings.pRxInfo = pRRI;
rfSettings.panId = panId;
rfSettings.myAddr = myAddr;
rfSettings.txSeqNumber = 0;
rfSettings.receiveOn = FALSE;
// Wait for the crystal oscillator to become stable
halRfWaitForCrystalOscillator();
// Write the short address and the PAN ID to the CC2420 RAM (requires that the XOSC is on and stable)
// DISABLE_GLOBAL_INT();
// FASTSPI_WRITE_RAM_LE(&myAddr, CC2420RAM_SHORTADDR, 2, n);
// FASTSPI_WRITE_RAM_LE(&panId, CC2420RAM_PANID, 2, n);
// ENABLE_GLOBAL_INT();
#ifdef RADIO_PRIORITY_CEILING
v = nrk_sem_post (radio_sem);
if (v == NRK_ERROR)
{
nrk_kprintf (PSTR ("CC2420 ERROR: Release of semaphore failed\r\n"));
_nrk_errno_set (2);
}
#endif
auto_ack_enable=0;
security_enable=0;
last_pkt_encrypted=0;
} // rf_init()
