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add app WeatherStation

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OFW PR 1833 by Skorpionm
This commit is contained in:
MX
2022-10-18 19:51:44 +03:00
parent 576dab02a4
commit 84d12da45a
72 changed files with 4573 additions and 750 deletions
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65
lib/subghz/blocks/math.c
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@@ -14,4 +14,69 @@ uint8_t subghz_protocol_blocks_get_parity(uint64_t key, uint8_t count_bit) {
parity += bit_read(key, i);
}
return parity & 0x01;
}
uint8_t subghz_protocol_blocks_crc4(
uint8_t const message[],
unsigned nBytes,
uint8_t polynomial,
uint8_t init) {
unsigned remainder = init << 4; // LSBs are unused
unsigned poly = polynomial << 4;
unsigned bit;
while(nBytes--) {
remainder ^= *message++;
for(bit = 0; bit < 8; bit++) {
if(remainder & 0x80) {
remainder = (remainder << 1) ^ poly;
} else {
remainder = (remainder << 1);
}
}
}
return remainder >> 4 & 0x0f; // discard the LSBs
}
uint8_t subghz_protocol_blocks_crc7(
uint8_t const message[],
unsigned nBytes,
uint8_t polynomial,
uint8_t init) {
unsigned remainder = init << 1; // LSB is unused
unsigned poly = polynomial << 1;
unsigned byte, bit;
for(byte = 0; byte < nBytes; ++byte) {
remainder ^= message[byte];
for(bit = 0; bit < 8; ++bit) {
if(remainder & 0x80) {
remainder = (remainder << 1) ^ poly;
} else {
remainder = (remainder << 1);
}
}
}
return remainder >> 1 & 0x7f; // discard the LSB
}
uint8_t subghz_protocol_blocks_crc8(
uint8_t const message[],
unsigned nBytes,
uint8_t polynomial,
uint8_t init) {
uint8_t remainder = init;
unsigned byte, bit;
for(byte = 0; byte < nBytes; ++byte) {
remainder ^= message[byte];
for(bit = 0; bit < 8; ++bit) {
if(remainder & 0x80) {
remainder = (remainder << 1) ^ polynomial;
} else {
remainder = (remainder << 1);
}
}
}
return remainder;
}