Improve checksum per https://github.com/gnea/grbl-Mega/issues/158 #159
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Per gnea#158 The logical OR squashes the previous checksum down to 1 bit of information, resulting in the final checksum being either the last character written, or one plus the last character written. This change switches to the bitwise-or to convert the squashing into a 1-bit roll to the left.
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This would be consistent with grblHAL's https://github.com/grblHAL/core/blob/3a84b58d301f04279268b4ef1045fd6bc0961be5/nuts_bolts.c#L267-L278 |
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Very old subject... Already discussed in 2017 here : |
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Per #158 The logical OR squashes the previous checksum down to 1 bit of information, resulting in the final checksum being either the last character written, or one plus the last character written.
This change switches to the bitwise-or to convert the squashing into a 1-bit roll to the left.