Martino Ferrari
76 lines
2.4 KiB
Go
76 lines
2.4 KiB
Go
package scpi
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import "github.com/uopi/uopi/internal/datasource"
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// Config is the [datasource.scpi] section. Each instrument is polled
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// independently over its own TCP socket.
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type Config struct {
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Enabled bool `toml:"enabled"`
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// PollIntervalMs is the default polling period for channels that do not
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// override it. Zero → 1000 ms.
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PollIntervalMs int `toml:"poll_interval_ms"`
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Instruments []Instrument `toml:"instruments"`
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}
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// Instrument is one SCPI device reachable over a raw TCP socket. Address is
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// "host:port"; the conventional SCPI-raw port 5025 is appended if absent.
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type Instrument struct {
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Name string `toml:"name"`
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// Transport selects the link type. "raw" (default) is line-based SCPI over
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// TCP. Reserved: "vxi11" (not yet implemented).
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Transport string `toml:"transport"`
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Address string `toml:"address"`
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TimeoutMs int `toml:"timeout_ms"`
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// Terminator is appended to every command. Empty → "\n".
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Terminator string `toml:"terminator"`
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Channels []Channel `toml:"channels"`
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}
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// Channel maps a SCPI query/command pair onto a signal named
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// "instrument:channel".
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type Channel struct {
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Name string `toml:"name"`
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// Query is the SCPI command whose response is the channel value,
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// e.g. "MEAS:VOLT?". Required.
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Query string `toml:"query"`
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// WriteCmd is a printf-style template used by Write; "%v" is replaced with
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// the value, e.g. "VOLT %v". Empty → channel is read-only.
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WriteCmd string `toml:"write_cmd"`
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// Type is the value type: "float" (default), "string", "int", or "bool".
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Type string `toml:"type"`
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Unit string `toml:"unit"`
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Min float64 `toml:"min"`
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Max float64 `toml:"max"`
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PollIntervalMs int `toml:"poll_interval_ms"`
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Description string `toml:"description"`
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}
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func (c Channel) dataType() datasource.DataType {
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switch c.Type {
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case "string":
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return datasource.TypeString
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case "int":
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return datasource.TypeInt64
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case "bool":
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return datasource.TypeBool
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default:
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return datasource.TypeFloat64
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}
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}
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func (c Channel) writable() bool { return c.WriteCmd != "" }
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func (c Channel) metadata(instrument string) datasource.Metadata {
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return datasource.Metadata{
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Name: instrument + ":" + c.Name,
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Type: c.dataType(),
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Unit: c.Unit,
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Description: c.Description,
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DisplayLow: c.Min,
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DisplayHigh: c.Max,
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DriveLow: c.Min,
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DriveHigh: c.Max,
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Writable: c.writable(),
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}
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}
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