uint8_t setup_cc2500(void) {
uint8_t returnValue=0;
uint8_t initial_power = 0xFB; // 0 dBm
// Set-up rx_callback function
do
{
// Changed
//spi_init(); // Initialize SPI port
// FIXME Add uscib0 files
cc_powerup_reset(); // Reset CCxxxx
// TODO implement this
wait_cycles(500); // Wait for device to reset (Not sure why this is needed)
if(writeRFSettings()) // Write RF settings to config reg
{
returnValue = 1; // Failed
break;
}
// FIXME Add uscib0 files
cc_write_burst_reg( TI_CCxxx0_PATABLE, &initial_power, 1);//Write PATABLE
// FIXME Add uscib0 files
cc_strobe(TI_CCxxx0_SIDLE);
WAIT1_Waitms(10);
cc_strobe(TI_CCxxx0_SFRX); // Flush RXFIFO
WAIT1_Waitms(10);
cc_strobe(TI_CCxxx0_SFTX); // Flush RXFIFO
WAIT1_Waitms(10);
cc_strobe(TI_CCxxx0_SRX); // Initialize CCxxxx in RX mode.
returnValue = cc_read_status(TI_CCxxx0_MARCSTATE);
returnValue =0;
// When a pkt is received, it will
// signal on GDO0 and wake CPU
// FIXME
// Configure GDO0 port
// GDO0_PxIES |= GDO0_PIN; // Int on falling edge (end of pkt)
// GDO0_PxIFG &= ~GDO0_PIN; // Clear flag
// GDO0_PxIE |= GDO0_PIN; // Enable int on end of packet
CC_2500_SETUP_DONE = true;
}while(0);
return returnValue;
}
/*******************************************************************************
* @fn void setup_radio( uint8_t (*callback)(void) )
* @brief Initialize radio and register Rx Callback function
* ****************************************************************************/
void setup_cc2500( uint8_t (*callback)(uint8_t*, uint8_t) )
{
uint8_t initial_power = 0xFB; // 0 dBm
// Set-up rx_callback function
rx_callback = callback;
spi_setup(); // Initialize SPI port
cc_powerup_reset(); // Reset CCxxxx
wait_cycles(500); // Wait for device to reset (Not sure why this is needed)
writeRFSettings(); // Write RF settings to config reg
cc_write_burst_reg( TI_CCxxx0_PATABLE, &initial_power, 1);//Write PATABLE
cc_strobe(TI_CCxxx0_SRX); // Initialize CCxxxx in RX mode.
// When a pkt is received, it will
// signal on GDO0 and wake CPU
// Configure GDO0 port
GDO0_PxIES |= GDO0_PIN; // Int on falling edge (end of pkt)
GDO0_PxIFG &= ~GDO0_PIN; // Clear flag
GDO0_PxIE |= GDO0_PIN; // Enable int on end of packet
}
/*******************************************************************************
* @fn void cc_powerup_reset()
* @brief reset radio
* ****************************************************************************/
void cc_powerup_reset(void)
{
CSn_PxOUT |= CSn_PIN;
wait_cycles(30);
CSn_PxOUT &= ~CSn_PIN;
wait_cycles(30);
CSn_PxOUT |= CSn_PIN;
wait_cycles(45);
CSn_PxOUT &= ~CSn_PIN; // /CS enable
while (!(IFG2&UCB0TXIFG)); // Wait for TXBUF ready
UCB0TXBUF = TI_CCxxx0_SRES; // Send strobe
// Strobe addr is now being TX'ed
while (UCB0STAT & UCBUSY); // Wait for TX to complete
while(SPI_USCIB0_PxIN & SPI_USCIB0_SOMI); // Wait until the device has reset
CSn_PxOUT |= CSn_PIN; // /CS disable
}
void
ndelay(uint64_t nanos)
{
ticks in_cycles = REF_SPEED_GHZ * nanos;
wait_cycles(in_cycles);
}
void
udelay(uint64_t micros)
{
ticks in_cycles = REF_SPEED_GHZ * 1000 * micros;
wait_cycles(in_cycles);
}
