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shchmue
2019-05-11 17:51:44 -04:00
parent 3b797318f5
commit 1bc5c2a667
19 changed files with 155 additions and 459 deletions
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42
source/utils/util.c
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@ -106,45 +106,3 @@ void power_off()
//TODO: we should probably make sure all regulators are powered off properly.
i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, MAX77620_ONOFFCNFG1_PWR_OFF);
}
#define CRC32C_POLY 0x82F63B78
u32 crc32c(const void *buf, u32 len)
{
const u8 *cbuf = (const u8 *)buf;
u32 crc = 0xFFFFFFFF;
while (len--)
{
crc ^= *cbuf++;
for (int i = 0; i < 8; i++)
crc = crc & 1 ? (crc >> 1) ^ CRC32C_POLY : crc >> 1;
}
return ~crc;
}
u32 memcmp32sparse(const u32 *buf1, const u32 *buf2, u32 len)
{
u32 len32 = len / 4;
if (!(len32 % 32))
{
while (len32)
{
len32 -= 32;
if(buf1[len32] != buf2[len32])
return 1;
}
}
else
{
while (len32)
{
len32 -= 32;
if(buf1[len32] != buf2[len32])
return 1;
if (len32 < 32)
return 0;
}
}
return 0;
}