How to use

bw

function

in

Array

function getDataRateAndBandwidth() {
  var dr;
  var bw;
  let current = readFromRegister(L3GD20_REG_RW_CTRL_REG1,
                  L3GD20_MASK_CTRL_REG1_DR | L3GD20_MASK_CTRL_REG1_BW);
  for (let drIdx in L3GD20Dictionaries.DataRateBandWidthMap) {
   let drKey = L3GD20Dictionaries.DataRateBandWidthMap[drIdx].dr;
   let drMap = L3GD20Dictionaries.DataRateBandWidthMap[drKey].bw;
   for (let bwIdx in drMap) {
    if (drMap[bwIdx].val === current) {
     dr = drKey;
     bw = drMap[bwIdx].key;
     return [ dr, bw ];
    }
   }
  }
  return [ dr, bw ];
 }

function setDataRateAndBandwidth(datarate, bandwidth) {
  var bwMap;
  for (let idx in L3GD20Dictionaries.DataRateBandWidthMap) {
   if (L3GD20Dictionaries.DataRateBandWidthMap[idx].dr === datarate) {
    bwMap = L3GD20Dictionaries.DataRateBandWidthMap[idx].bw;
    break;
   }
  }
  if (bwMap === undefined) {
   throw { err: "Data rate:[" + datarate + "] not in range of data rate values."};
  }
  var bits;
  for (let idx in bwMap) {
   if (bwMap[idx].key === bandwidth) {
    bits = bwMap[idx].val;
   }
  }
  if (bits === undefined) {
   throw { err: "Bandwidth: [" + bandwidth + "] cannot be assigned to data rate: [" + datarate + "]" };
  }
  writeToRegister(L3GD20_REG_RW_CTRL_REG1, L3GD20_MASK_CTRL_REG1_DR | L3GD20_MASK_CTRL_REG1_BW, bits);
 }