spi max speed

Added

• declare compatibility with python3.11
• allow parametrization of spi_max_speed_hz during C1101 class instantiation
  to solve #128 (@matteo-briani)

Changed

• CC1101.transmit: raise RuntimeError instead of Exception when
  attempting to transmit in non-idle state

Removed

• compatibility with python3.5 & python3.6

radio performance fix

Fixed

• change IOCFG0.GDO0_CFG as recommended in docs to "optimize RF performance"

chip version 0

Fixed

• recommend to check wiring & bus selection when receiving chip version 0

unlock on init error

Fixed

• close & unlock SPI device file when error occurs while entering context

configure output power

Added

• method set/get_output_power to configure/retrieve output power settings
  (PATABLE and FREND0.PA_POWER)
• all commands: added parameter -p/--output-power
• command cc1101-export-config: append values of PATABLE register as comment

Fixed

• default config via private/unstable method _set_power_amplifier_setting_index:
  no longer set FREND0.LODIV_BUF_CURRENT_TX to 0 (default: 1)

fixed _set_modulation_format

Fixed

• private/unstable method _set_modulation_format: fixed incorrect configuration of MDMCFG2 register

export config

Added

• command cc1101-export-config to export / inspect config register values
  after configuration via command-line arguments & options matching cc1101-transmit

Fixed

• cc1101-transmit command:
  • set flock on SPI device file to avoid race conditions,
    if other processes attempt to use the same transceiver
  • configure transceiver after reading from stdin
    to avoid delay between configuration and transmission, if pipe is slow

command-line interface

Added

• added command cc1101-transmit to transmit via command-line interface
• warn when selecting frequency below supported range

chip version 0x04

Added

• support chip version 0x04

flock

Added

• option CC1101(lock_spi_device=True) sets an advisory, exclusive,
  non-blocking flock on the SPI device file /dev/spidev?.?
• method .unlock_spi_device() to release flock manually