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Update RMII ex, enhance MIP

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Sergio R. Caprile committed 2023-02-27 18:30:53 -03:00
1 parent c362af1f81
commit bba361016d
7 files changed
+73 -90
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src/util.c
+8 -4
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@@ -48,11 +48,16 @@ uint16_t mg_ntohs(uint16_t net) {
}
uint32_t mg_crc32(uint32_t crc, const char *buf, size_t len) {
int i;
static const uint32_t crclut[16] = {
// table for polynomial 0xEDB88320 (reflected)
0x00000000, 0x1DB71064, 0x3B6E20C8, 0x26D930AC, 0x76DC4190, 0x6B6B51F4,
0x4DB26158, 0x5005713C, 0xEDB88320, 0xF00F9344, 0xD6D6A3E8, 0xCB61B38C,
0x9B64C2B0, 0x86D3D2D4, 0xA00AE278, 0xBDBDF21C};
crc = ~crc;
while (len--) {
crc ^= *(unsigned char *) buf++;
for (i = 0; i < 8; i++) crc = crc & 1 ? (crc >> 1) ^ 0xedb88320 : crc >> 1;
uint8_t byte = *(uint8_t *)buf++;
crc = crclut[(crc ^ byte) & 0x0F] ^ (crc >> 4);
crc = crclut[(crc ^ (byte >> 4)) & 0x0F] ^ (crc >> 4);
}
return ~crc;
}
@@ -130,4 +135,3 @@ uint64_t mg_millis(void) {
#endif
}
#endif