#define RFM22_is1_iext BIT3 // External Interrupt. When set to 1 an interrupt occurred on one of the GPIO<49>s if it is programmed so. The status can be checked in register 0Eh. See GPIOx Configuration section for the details.
#define RFM22_is1_irxffafull BIT4 // RX FIFO Almost Full.When set to 1 the RX FIFO has met its almost full threshold and needs to be read by the microcontroller.
#define RFM22_is1_ixtffaem BIT5 // TX FIFO Almost Empty. When set to 1 the TX FIFO is almost empty and needs to be filled.
#define RFM22_is1_itxffafull BIT6 // TX FIFO Almost Full. When set to 1 the TX FIFO has met its almost full threshold and needs to be transmitted.
#define RFM22_is1_ifferr BIT7 // FIFO Underflow/Overflow Error. When set to 1 the TX or RX FIFO has overflowed or underflowed.
#define RFM22_interrupt_status2 0x04 // R
#define RFM22_is2_ipor BIT0 // Power-on-Reset (POR). When the chip detects a Power on Reset above the desired setting this bit will be set to 1.
#define RFM22_is2_ichiprdy BIT1 // Chip Ready (XTAL). When a chip ready event has been detected this bit will be set to 1.
#define RFM22_is2_ilbd BIT2 // Low Battery Detect. When a low battery event is been detected this bit will be set to 1. This interrupt event is saved even if it is not enabled by the mask register bit and causes an interrupt after it is enabled.
#define RFM22_is2_iwut BIT3 // Wake-Up-Timer. On the expiration of programmed wake-up timer this bit will be set to 1.
#define RFM22_is2_irssi BIT4 // RSSI. When RSSI level exceeds the programmed threshold this bit will be set to 1.
#define RFM22_is2_ipreainval BIT5 // Invalid Preamble Detected. When the preamble is not found within a period of time set by the invalid preamble detection threshold in Register 54h, this bit will be set to 1.
#define RFM22_is2_ipreaval BIT6 // Valid Preamble Detected. When a preamble is detected this bit will be set to 1.
#define RFM22_is2_iswdet BIT7 // Sync Word Detected. When a sync word is detected this bit will be set to 1.
#define RFM22_interrupt_enable1 0x05 // R/W
#define RFM22_ie1_encrcerror BIT0 // Enable CRC Error. When set to 1 the CRC Error interrupt will be enabled.
#define RFM22_ie1_enpkvalid BIT1 // Enable Valid Packet Received. When ipkvalid = 1 the Valid Packet Received Interrupt will be enabled.
#define RFM22_ie1_enpksent BIT2 // Enable Packet Sent. When ipksent =1 the Packet Sense Interrupt will be enabled.
#define RFM22_ie1_enext BIT3 // Enable External Interrupt. When set to 1 the External Interrupt will be enabled.
#define RFM22_ie1_enrxffafull BIT4 // Enable RX FIFO Almost Full. When set to 1 the RX FIFO Almost Full interrupt will be enabled.
#define RFM22_ie1_entxffaem BIT5 // Enable TX FIFO Almost Empty. When set to 1 the TX FIFO Almost Empty interrupt will be enabled.
#define RFM22_ie1_entxffafull BIT6 // Enable TX FIFO Almost Full. When set to 1 the TX FIFO Almost Full interrupt will be enabled.
#define RFM22_ie1_enfferr BIT7 // Enable FIFO Underflow/Overflow. When set to 1 the FIFO Underflow/Overflow interrupt will be enabled.
#define RFM22_interrupt_enable2 0x06 // R/W
#define RFM22_ie2_enpor BIT0 // Enable POR. When set to 1 the POR interrupt will be enabled.
#define RFM22_ie2_enchiprdy BIT1 // Enable Chip Ready (XTAL). When set to 1 the Chip Ready interrupt will be enabled.
#define RFM22_ie2_enlbd BIT2 // Enable Low Battery Detect. When set to 1 the Low Battery Detect interrupt will be enabled.
#define RFM22_ie2_enwut BIT3 // Enable Wake-Up Timer. When set to 1 the Wake-Up Timer interrupt will be enabled.
#define RFM22_ie2_enrssi BIT4 // Enable RSSI. When set to 1 the RSSI Interrupt will be enabled.
#define RFM22_ie2_enpreainval BIT5 // Enable Invalid Preamble Detected. When mpreadet =1 the Invalid Preamble Detected Interrupt will be enabled.
#define RFM22_ie2_enpreaval BIT6 // Enable Valid Preamble Detected. When mpreadet =1 the Valid Preamble Detected Interrupt will be enabled.
#define RFM22_ie2_enswdet BIT7 // Enable Sync Word Detected. When mpreadet =1 the Preamble Detected Interrupt will be enabled.
#define RFM22_op_and_func_ctrl1 0x07 // R/W
#define RFM22_opfc1_xton 0x01 // READY Mode (Xtal is ON).
#define RFM22_opfc1_pllon 0x02 // TUNE Mode (PLL is ON). When pllon = 1 the PLL will remain enabled in Idle State. This will for faster turn-around time at the cost of increased current consumption in Idle State.
#define RFM22_opfc1_rxon 0x04 // RX on in Manual Receiver Mode. Automatically cleared if Multiple Packets config. is disabled and a valid packet received.
#define RFM22_opfc1_txon 0x08 // TX on in Manual Transmit Mode. Automatically cleared in FIFO mode once the packet is sent. Transmission can be aborted during packet transmission, however, when no data has been sent yet, transmission can only be aborted after the device is programmed to <20>unmodulated carrier<65> ("Register 71h. Modulation Mode Control 2").
#define RFM22_opfc1_enwt 0x20 // Enable Wake-Up-Timer. Enabled when enwt = 1. If the Wake-up-Timer function is enabled it will operate in any mode and notify the microcontroller through the GPIO interrupt when the timer expires.
#define RFM22_opfc1_enlbd 0x40 // Enable Low Battery Detect. When this bit is set to 1 the Low Battery Detector circuit and threshold comparison will be enabled.
#define RFM22_opfc1_swres 0x80 // Software Register Reset Bit. This bit may be used to reset all registers simultaneously to a DEFAULT state, without the need for sequentially writing to each individual register. The RESET is accomplished by setting swres = 1. This bit will be automatically cleared.
#define RFM22_op_and_func_ctrl2 0x08 // R/W
#define RFM22_opfc2_ffclrtx 0x01 // TX FIFO Reset/Clear. This has to be a two writes operation: Setting ffclrtx =1 followed by ffclrtx = 0 will clear the contents of the TX FIFO.
#define RFM22_opfc2_ffclrrx 0x02 // RX FIFO Reset/Clear. This has to be a two writes operation: Setting ffclrrx =1 followed by ffclrrx = 0 will clear the contents of the RX FIFO.
#define RFM22_opfc2_enldm 0x04 // Enable Low Duty Cycle Mode. If this bit is set to 1 then the chip turns on the RX regularly. The frequency should be set in the Wake-Up Timer Period register, while the minimum ON time should be set in the Low-Duty Cycle Mode Duration register. The FIFO mode should be enabled also.
#define RFM22_opfc2_autotx 0x08 // Automatic Transmission. When autotx = 1 the transceiver will enter automatically TX State when the FIFO is almost full. When the FIFO is empty it will automatically return to the Idle State.
#define RFM22_opfc2_rxmpk 0x10 // RX Multi Packet. When the chip is selected to use FIFO Mode (dtmod[1:0]) and RX Packet Handling (enpacrx) then it will fill up the FIFO with multiple valid packets if this bit is set, otherwise the transceiver will automatically leave the RX State after the first valid packet has been received.
#define RFM22_opfc2_antdiv_mask 0xE0 // Enable Antenna Diversity. The GPIO must be configured for Antenna Diversity for the algorithm to work properly.
#define RFM22_xtal_osc_load_cap 0x09 // R/W
#define RFM22_xolc_xlc_mask 0x7F // Tuning Capacitance for the 30 MHz XTAL.
#define RFM22_xolc_xtalshft 0x80 // Additional capacitance to course shift the frequency if xlc[6:0] is not sufficient. Not binary with xlc[6:0].
#define RFM22_io_port_extitst2 0x40 // External Interrupt Status. If the GPIO2 is programmed to be external interrupt sources then the status can be read here.
#define RFM22_io_port_extitst1 0x20 // External Interrupt Status. If the GPIO1 is programmed to be external interrupt sources then the status can be read here.
#define RFM22_io_port_extitst0 0x10 // External Interrupt Status. If the GPIO0 is programmed to be external interrupt sources then the status can be read here.
#define RFM22_io_port_itsdo 0x08 // Interrupt Request Output on the SDO Pin. nIRQ output is present on the SDO pin if this bit is set and the nSEL input is inactive (high).
#define RFM22_io_port_dio2 0x04 // Direct I/O for GPIO2. If the GPIO2 is configured to be a direct output then the value on the GPIO pin can be set here. If the GPIO2 is configured to be a direct input then the value of the pin can be read here.
#define RFM22_io_port_dio1 0x02 // Direct I/O for GPIO1. If the GPIO1 is configured to be a direct output then the value on the GPIO pin can be set here. If the GPIO1 is configured to be a direct input then the value of the pin can be read here.
#define RFM22_io_port_dio0 0x01 // Direct I/O for GPIO0. If the GPIO0 is configured to be a direct output then the value on the GPIO pin can be set here. If the GPIO0 is configured to be a direct input then the value of the pin can be read here.
#define RFM22_io_port_default 0x00 // GPIO pins are default
#define RFM22_adc_config 0x0F // R/W
#define RFM22_ac_adcgain0 0x00
#define RFM22_ac_adcgain1 0x01
#define RFM22_ac_adcgain2 0x02
#define RFM22_ac_adcgain3 0x03
#define RFM22_ac_adcref_bg 0x00
#define RFM22_ac_adcref_vdd3 0x08
#define RFM22_ac_adcref_vdd2 0x0C
#define RFM22_ac_adcsel_temp_sensor 0x00
#define RFM22_ac_adcsel_gpio0 0x10
#define RFM22_ac_adcsel_gpio1 0x20
#define RFM22_ac_adcsel_gpio2 0x30
#define RFM22_ac_adcsel_gpio01 0x40
#define RFM22_ac_adcsel_gpio12 0x50
#define RFM22_ac_adcsel_gpio02 0x60
#define RFM22_ac_adcsel_gpio_gnd 0x70
#define RFM22_ac_adcstartbusy 0x80
#define RFM22_adc_sensor_amp_offset 0x10 // R/W
#define RFM22_asao_adcoffs_mask 0x0F // ADC Sensor Amplifier Offset. The offset can be calculated as Offset = adcoffs[2:0] x VDD/1000; MSB = adcoffs[3] = Sign bit.
#define RFM22_adc_value 0x11 // R .. Internal 8 bit ADC Output Value.
#define RFM22_temp_sensor_calib 0x12 // R/W
#define RFM22_tsc_tstrim_mask 0x0F // Temperature Sensor Trim Value.
#define RFM22_tsc_entstrim 0x10 // Temperature Sensor Trim Enable.
#define RFM22_dac_enpactx 0x08 // Enable Packet TX Handling. If FIFO Mode (dtmod = 10) is being used automatic packet handling may be enabled. Setting enpactx = 1 will enable automatic packet handling in the TX path. Register 30<33>4D allow for various configurations of the packet structure. Setting enpactx = 0 will not do any packet handling in the TX path. It will only transmit what is loaded to the FIFO.
#define RFM22_dac_skip2ph 0x10 // Skip 2nd Phase of Preamble Detection. If set, we skip the second phase of the preamble detection (under certain conditions) if antenna diversity is enabled.
#define RFM22_dac_crcdonly 0x20 // CRC Data Only Enable. When this bit is set to 1 the CRC is calculated on and checked against the packet data fields only.
#define RFM22_dac_lsbfrst 0x40 // LSB First Enable. The LSB of the data will be transmitted/received first if this bit is set.
#define RFM22_dac_enpacrx 0x80 // Enable Packet RX Handling. If FIFO Mode (dtmod = 10) is being used automatic packet handling may be enabled. Setting enpacrx = 1 will enable automatic packet handling in the RX path. Register 30<33>4D allow for various configurations of the packet structure. Setting enpacrx = 0 will not do any packet handling in the RX path. It will only receive everything after the sync word and fill up the RX FIFO.
#define RFM22_ezmac_status_pksent 0x01 // Packet Sent. A 1 a packet has been sent by the radio. (Same bit as in register 03, but reading it does not reset the IRQ)
#define RFM22_ezmac_status_pktx 0x02 // Packet Transmitting. When 1 the radio is currently transmitting a packet.
#define RFM22_ezmac_status_crcerror 0x04 // CRC Error. When 1 a Cyclic Redundancy Check error has been detected. (Same bit as in register 03, but reading it does not reset the IRQ)
#define RFM22_ezmac_status_pkvalid 0x08 // Valid Packet Received. When a 1 a valid packet has been received by the receiver. (Same bit as in register 03, but reading it does not reset the IRQ)
#define RFM22_ezmac_status_pkrx 0x10 // Packet Receiving. When 1 the radio is currently receiving a valid packet.
#define RFM22_ezmac_status_pksrch 0x20 // Packet Searching. When 1 the radio is searching for a valid packet.
#define RFM22_ezmac_status_rxcrc1 0x40 // If high, it indicates the last CRC received is all one<6E>s. May indicated Transmitter underflow in case of CRC error.
#define RFM22_header_cntl2_prealen 0x01 // MSB of Preamble Length. See register Preamble Length.
#define RFM22_header_cntl2_synclen_3 0x00 // Synchronization Word 3
#define RFM22_header_cntl2_synclen_32 0x02 // Synchronization Word 3 followed by 2
#define RFM22_header_cntl2_synclen_321 0x04 // Synchronization Word 3 followed by 2 followed by 1
#define RFM22_header_cntl2_synclen_3210 0x06 // Synchronization Word 3 followed by 2 followed by 1 followed by 0
#define RFM22_header_cntl2_fixpklen 0x08 // Fix Packet Length. When fixpklen = 1 the packet length (pklen[7:0]) is not included in the header. When fixpklen = 0 the packet length is included in the header.
#define RFM22_header_cntl2_skipsyn 0x80 // If high, the system will ignore the syncword search timeout reset. The chip will not return to searching for Preamble, but instead will remain searching for Sync word.
#define RFM22_pre_det_ctrl1_preath_mask 0xF8 // Number of nibbles processed during detection.
#define RFM22_pre_det_ctrl1_rssi_offset_mask 0x07 // Value added as offset to RSSI calculation. Every increment in this register results in an increment of +4 dB in the RSSI.
#define RFM22_ch_fil_coeff_ad_chfiladd_mask 0x0F // Channel Filter Coefficient Look-up Table Address. The address for channel filter coefficients used in the RX path.
#define RFM22_agc_ovr1_sgi 0x40 // AGC Loop, Set Gain Increase. If set to 0 then gain increasing will not be allowed. If set to 1 then gain increasing is allowed, default is 0.
#define RFM22_agc_ovr1_agcen 0x20 // Automatic Gain Control Enable. When this bit is set then the result of the control can be read out from bits [4:0], otherwise the gain can be controlled manually by writing into bits [4:0].
#define RFM22_agc_ovr1_lnagain 0x10 // LNA Gain Select. 0 = min gain = 5dB, 1 = max gain = 25 dB.
#define RFM22_agc_ovr1_pga_mask 0x0F // PGA Gain Override Value.
#define RFM22_tx_pwr_lna_sw 0x08 // LNA Switch Controller. If set, lna_sw control from the digital will go high during TX modes, and low during other times. If reset, the digital control signal is low at all times.
#define RFM22_tx_pwr_papeaken 0x40 // PA Peak Detector Enable.
#define RFM22_tx_pwr_papeakval 0x80 // PA Peak Detector Value Read Register. Reading a 1 in this register when the papeaken=1 then the PA drain voltage is too high and the match network needs adjusting for optimal efficiency.
