github.com/nvi-inc/fsgo@v0.2.1/versions/fs9.12.13/rdbe.go (about)

     1  // Copyright 2019 NVI Inc. All rights reserved.
     2  // Use of this source code is governed by a MIT
     3  // license that can be found in the LICENSE file.
     4  
     5  package fs
     6  
     7  import (
     8  	"errors"
     9  	"github.com/fatih/structs"
    10  )
    11  
    12  func (f *FieldSystem) RdbeNum() int {
    13  	return len(f.Fscom.RdbeTsysData[:])
    14  }
    15  
    16  func (f *FieldSystem) RdbeMap(index int) (m map[string]interface{}, err error) {
    17  	if index < 0 || index >= f.RdbeNum() {
    18  		err = errors.New("invalid RDBE id")
    19  		return
    20  	}
    21  
    22  	i := int(f.Fscom.RdbeTsysData[index].Iping)
    23  	if i < 0 || i >= len(f.Fscom.RdbeTsysData[index].Data) {
    24  		err = errors.New("no data available")
    25  		return
    26  	}
    27  
    28  	data := f.Fscom.RdbeTsysData[index].Data[i]
    29  	m = structs.Map(data)
    30  	m["Epoch"] = cstr(data.Epoch[:])
    31  
    32  	m["PcalAmp"] = data.PcalAmp[:]
    33  	m["PcalPhase"] = data.PcalPhase[:]
    34  
    35  	tsysmap := make([][]float32, len(data.Tsys))
    36  	for i := range data.Tsys {
    37  		tsysmap[i] = data.Tsys[i][:]
    38  	}
    39  	m["Tsys"] = tsysmap
    40  
    41  	return m, nil
    42  }
    43  
    44  // Returns a function which returns if RDBE info has been updated
    45  // since last check
    46  func (f *FieldSystem) RdbeUpdatedFn(index int) (func() bool, error) {
    47  	if index < 0 || index >= f.RdbeNum() {
    48  		return nil, errors.New("invalid RDBE index")
    49  	}
    50  	i := -1
    51  	return func() bool {
    52  		j := int(f.Fscom.RdbeTsysData[index].Iping)
    53  		if j < 0 || j >= len(f.Fscom.RdbeTsysData[index].Data) || i == j {
    54  			i = j // For case when j < 0
    55  			return false
    56  		}
    57  		i = j
    58  		return true
    59  	}, nil
    60  
    61  }