Hardware-agnostic driver for Alicat BASIS-2 mass-flow meters and controllers (B-Series / BC-Series). More...

#include "alicat_basis2_modbus.hpp"
#include "alicat_basis2_registers.hpp"
#include "alicat_basis2_types.hpp"
#include "alicat_basis2_uart_interface.hpp"
#include "alicat_basis2_version.h"
#include <array>
#include <cstdint>
#include <cstddef>
#include <cstring>

Include dependency graph for alicat_basis2.hpp:

Classes
class	alicat_basis2::Driver< UartT >
	Main BASIS-2 driver. More...

Namespaces
namespace	alicat_basis2

Functions
const char *	alicat_basis2::GetDriverVersion () noexcept
	Driver version string (from generated alicat_basis2_version.h).

Detailed Description

Hardware-agnostic driver for Alicat BASIS-2 mass-flow meters and controllers (B-Series / BC-Series).

Bus : Modbus-RTU over an RS-232 / RS-485 multidrop UART link.
Slaves: up to 247 BASIS-2 instruments share a single bus; each is addressed by its 1..247 Modbus address (settable at runtime).
Transport: any byte-level UART exposed via the CRTP alicat_basis2::UartInterface adapter.

The driver intentionally focuses on the production subset of the datasheet — the operations a host typically needs in a real measurement loop:

Single-burst read of every instantaneous data register so the live cross-check between digital and analog can use one round-trip.
Setpoint command (with setpoint-source switching).
Tare, autotare, totalizer reset, totalizer batch.
Gas selection.
Full instrument identity (firmware, serial, units, full-scale).
Communication watchdog.
Baud / Modbus-address / ASCII unit-id reconfiguration (with the safety dance the datasheet warns about for baud changes).
Factory restore.
Address discovery sweep so a fresh bench can be enumerated even when the operator doesn't know how the instruments were last programmed.

Thread safety: The driver is not internally synchronised. When several threads share the same bus the host must serialise transactions externally (a single mutex around every public call is sufficient). See examples/esp32/ for one such pattern.

Classes

Namespaces

Functions

Detailed Description