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Landis+Gyr GridStream Protocol (view source)
Revision as of 00:38, 6 March 2021
, 00:38, 6 March 2021→Checksum
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====Checksum====
----Add <code>uint16_t Landis_crc16 (uint16_t crc, const std::vector<uint8_t> &data here, size_t size) {</code> <code>// CoServ CRC = 0x45F8</code> <code>// Oncor CRC = 0x5FD6</code> <code>// Hard coded Poly 0x1021</code> <code> uint16_t i = 0;</code> <code> while (size--) { </code> <code>crc ^= data[i] << 8;</code> <code>i++;</code> <code>for (unsigned k = 0; k < 8; k++)</code> <code>crc = crc & 0x8000 ? (crc << 1) ^ 0x1021 : crc << 1; </code> <code> } </code> <code>return crc;</code> <code>}</code>
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===Captured Meter Data===
