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https://github.com/sergeyyarkov/modbus-logger.git
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19 lines
870 B
JavaScript
19 lines
870 B
JavaScript
/**
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* Read number from buffer
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* @param {Buffer} buf
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* @param {import("..").NumberType} type
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* @param {"BE" | "LE"} order
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*/
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export function readNumberFromBuf(buf, type, order) {
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/* Big-Endian */
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if (type === 'UI16' && order === 'BE') return Buffer.from(buf).readUInt16BE();
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if (type === 'I16' && order === 'BE') return Buffer.from(buf).readInt16BE();
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if (type === 'UI32' && order === 'BE') return Buffer.from(buf).readUint32BE();
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if (type === 'FP32' && order === 'BE') return Buffer.from(buf).readFloatBE();
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/* Little-Endian */
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if (type === 'UI16' && order === 'LE') return Buffer.from(buf).readUInt16LE();
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if (type === 'I16' && order === 'LE') return Buffer.from(buf).readInt16LE();
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if (type === 'UI32' && order === 'LE') return Buffer.from(buf).readUint32LE();
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if (type === 'FP32' && order === 'LE') return Buffer.from(buf).readFloatLE();
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} |