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add helper fct manchesterEncodeUint32

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This commit is contained in:
Philippe Teuwen 2019-09-15 02:09:40 +02:00
commit 960d8c4db3
3 changed files with 20 additions and 57 deletions
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12
common/lfdemod.c
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@ -419,6 +419,18 @@ uint32_t manchesterEncode2Bytes(uint16_t datain) {
return output;
}
void manchesterEncodeUint32(uint32_t data_in, uint8_t bitlen_in, uint8_t *bits_out, uint16_t *index) {
for (int i = bitlen_in - 1; i >= 0; i--) {
if ((data_in >> i) & 1) {
bits_out[(*index)++] = 1;
bits_out[(*index)++] = 0;
} else {
bits_out[(*index)++] = 0;
bits_out[(*index)++] = 1;
}
}
}
//by marshmellow
//encode binary data into binary manchester
//NOTE: bitstream must have triple the size of "size" available in memory to do the swap