void radio_loadPacket(uint8_t* packet, uint8_t len) {
// change state
radio_vars.state = RADIOSTATE_LOADING_PACKET;
radio_spiStrobe(CC1101_SFTX, &radio_vars.radioStatusByte);
radio_spiWriteTxFifo(&radio_vars.radioStatusByte, packet, len);
// change state
radio_vars.state = RADIOSTATE_PACKET_LOADED;
}
void radio_rxEnable() {
// change state
radio_vars.state = RADIOSTATE_ENABLING_RX;
// put radio in reception mode
radio_spiStrobe(CC2420_SRXON, &radio_vars.radioStatusByte);
radio_spiStrobe(CC2420_SFLUSHRX, &radio_vars.radioStatusByte);
// wiggle debug pin
debugpins_radio_set();
leds_radio_on();
// busy wait until radio really listening
while (radio_vars.radioStatusByte.rssi_valid==0) {
radio_spiStrobe(CC2420_SNOP, &radio_vars.radioStatusByte);
}
// change state
radio_vars.state = RADIOSTATE_LISTENING;
}
void radio_rfOff() {
// change state
radio_vars.state = RADIOSTATE_TURNING_OFF;
// calibrates frequency synthesizer and turns it off
radio_spiStrobe(CC1101_SCAL, &radio_vars.radioStatusByte);
debugpins_radio_clr();
leds_radio_off();
// change state
radio_vars.state = RADIOSTATE_RFOFF;
}
void radio_rfOff() {
// change state
radio_vars.state = RADIOSTATE_TURNING_OFF;
radio_spiStrobe(CC2420_SRFOFF, &radio_vars.radioStatusByte);
// poipoipoi wait until off
// wiggle debug pin
debugpins_radio_clr();
leds_radio_off();
// change state
radio_vars.state = RADIOSTATE_RFOFF;
}
void radio_txNow() {
// change state
radio_vars.state = RADIOSTATE_TRANSMITTING;
radio_spiStrobe(CC1101_STX, &radio_vars.radioStatusByte);
}
void radio_reset() {
cc1101_IOCFG0_reg_t cc1101_IOCFG0_reg;
cc1101_PKTCTRL0_reg_t cc1101_PKTCTRL0_reg;
cc1101_PKTLEN_reg_t cc1101_PKTLEN_reg;
cc1101_MDMCFG2_reg_t cc1101_MDMCFG2_reg;
cc1101_MCSM0_reg_t cc1101_MCSM0_reg;
// global reset
radio_spiStrobe(CC1101_SRES, &radio_vars.radioStatusByte);
// default setting as recommended in datasheet
cc1101_IOCFG0_reg.GDO0_CFG = 63;
cc1101_IOCFG0_reg.GDO0_INV = 0;
cc1101_IOCFG0_reg.TEMP_SENSOR_ENABLE = 0;
radio_spiWriteReg(CC1101_IOCFG0,
&radio_vars.radioStatusByte,
*(uint8_t*)&cc1101_IOCFG0_reg);
// setting packet control
cc1101_PKTCTRL0_reg.LENGTH_CONFIG = 0; // Fixing packet length
cc1101_PKTCTRL0_reg.CRC_EN = 1; // Enabling CRC calculation
cc1101_PKTCTRL0_reg.unused_r0_2 = 0;
cc1101_PKTCTRL0_reg.PKT_FORMAT = 0;
cc1101_PKTCTRL0_reg.WHITE_DATA = 1; // Data whitening
radio_spiWriteReg(CC1101_PKTCTRL0,
&radio_vars.radioStatusByte,
*(uint8_t*)&cc1101_PKTCTRL0_reg);
// Setting packet length to 128 bytes
cc1101_PKTLEN_reg.PACKET_LENGTH = 128;
radio_spiWriteReg(CC1101_PKTLEN,
&radio_vars.radioStatusByte,
*(uint8_t*)&cc1101_PKTLEN_reg);
//Emulating 32 bits word as recommended in datasheet
cc1101_MDMCFG2_reg.SYNC_MODE = 3; // 32 bits sync word
cc1101_MDMCFG2_reg.MANCHESTER_EN = 0;
cc1101_MDMCFG2_reg.MOD_FORMAT = 0;
cc1101_MDMCFG2_reg.DEM_DCFILT_OFF = 0;
radio_spiWriteReg(CC1101_MDMCFG2,
&radio_vars.radioStatusByte,
*(uint8_t*)&cc1101_MDMCFG2_reg);
// setting main control state machine
cc1101_MCSM0_reg.FS_AUTOCAL = 0;
cc1101_MCSM0_reg.PO_TIMEOUT = 1;
cc1101_MCSM0_reg.PIN_CTRL_EN = 0;
cc1101_MCSM0_reg.XOSC_FORCE_ON = 1; // Forcing the XOSC to stay on even in SLEEP state
radio_spiWriteReg(CC1101_MCSM0,
&radio_vars.radioStatusByte,
*(uint8_t*)&cc1101_MCSM0_reg);
}
void radio_rfOn() {
radio_spiStrobe(CC2420_SXOSCON, &radio_vars.radioStatusByte);
while (radio_vars.radioStatusByte.xosc16m_stable==0) {
radio_spiStrobe(CC2420_SNOP, &radio_vars.radioStatusByte);
}
}
