dhalsim

Dhalsim is a DAQ and device simulation application which runs on the rp2 family of Raspberry Pi microcontrollers. Currently, it supports running on the Pigweed RP2350 HIL board and the Pico 2.

daq-cli

Flags

These flags are added to daq-cli when the dhalsim backend is in use.

--dhalsim-config=<file>
                     (optional) A path to a JSON formatted configuration file
                     specifying the configuration options for interacting
                     with the Dhalsim application and hardware.
--dhalsim-device=<path>
                     A path to the serial port used to communicate with the
                     Dhalsim hardware. Required if no config file specified.
--dhalsim-baudrate=<baudrate>
                     The baud rate to use when communicating with the Dhalsim
                     application. Required if no config file specified.
--dhalsim-token-db=<token-db>
                     (optional) The token database (e.g. ELF file) to use
                     when decoding log messages from the Dhalsim application.

Environment variables

• PW_DAQ_DHALSIM_CONFIG: (optional) A path to a JSON formatted configuration file specifying the configuration options for interacting with the Dhalsim application and hardware.

Warning

Flags will override environment variables.

JSON configuration file

The JSON configuration file supplied via --dhalsim-config or PW_DAQ_DHALSIM_CONFIG can specify serial connection settings and other device configurations:

{
  "device": "/dev/ttyACM4",
  "baudrate": 115200,
  "token_db": "path/to/dhalsim.elf",
  "board": "pw_hil_sim"
}

Examples

$ daq-cli create digital0 --direction=out --initial=low
$ daq-cli create digital1 --direction=in --pull=up
$ daq-cli set digital1.pull down
$ daq-cli get digital1.pull
$ daq-cli on digital1.change do digital0.write
$ daq-cli do digital0.write high
$ daq-cli do digital1.read
$ daq-cli create uart0 --baudrate=115200 --loopback
$ daq-cli do uart0.tx a
$ daq-cli listen -n 1 uart0.rx
$ daq-cli usage
$ daq-cli dump -
$ daq-cli clear
$ daq-cli info
$ daq-cli capabilities
$ daq-cli reset