R_API void r_hash_do_begin(RHash *ctx, int flags) {
CHKFLAG (flags, R_HASH_MD5) MD5Init (&ctx->md5);
CHKFLAG (flags, R_HASH_SHA1) SHA1_Init (&ctx->sha1);
CHKFLAG (flags, R_HASH_SHA256) SHA256_Init (&ctx->sha256);
CHKFLAG (flags, R_HASH_SHA384) SHA384_Init (&ctx->sha384);
CHKFLAG (flags, R_HASH_SHA512) SHA512_Init (&ctx->sha512);
ctx->rst = 0;
}
R_API void r_hash_do_end(RHash *ctx, int flags) {
CHKFLAG (flags, R_HASH_MD5) MD5Final (ctx->digest, &ctx->md5);
CHKFLAG (flags, R_HASH_SHA1) SHA1_Final (ctx->digest, &ctx->sha1);
CHKFLAG (flags, R_HASH_SHA256) SHA256_Final (ctx->digest, &ctx->sha256);
CHKFLAG (flags, R_HASH_SHA384) SHA384_Final (ctx->digest, &ctx->sha384);
CHKFLAG (flags, R_HASH_SHA512) SHA512_Final (ctx->digest, &ctx->sha512);
ctx->rst = 1;
}
/********************************************************************
* updateFlowRate: *
* determines whether to change the frequency on the VFD to *
* match the desired flow rate *
********************************************************************/
void updateFlowRate()
{
float prevFreq = update.frequency; // Save the previous frequency
// Save off desired flow in case server updates while in this function
// If this happens, it will be updated on the next pass
float currentDesiredFlow = update.desiredFlowRate;
// If desired flow was updated via server
// start with frequency based on lookup table
if(CHKFLAG(update.updateFlag, UPDATE_FLOW))
{
//TODO: Change/update LUT for how frequency is first determined
update.frequency = currentDesiredFlow*(60/3.5); //TEMPORARY
printf("Update Flow set, flow: %f, freq: %f\n", currentDesiredFlow, update.frequency);
// clear update flow flag
LOCK(&flagMutex);
CLRFLAG(update.updateFlag, UPDATE_FLOW);
UNLOCK(&flagMutex);
}
else //adjust flow rate based on how off it is from actual
{
// float difference = 0;
// difference = data.flowRate - currentDesiredFlow;
// if (difference > FLOW_THRESH || difference < -FLOW_THRESH)
// {
// //TODO: Change how frequency is calculated
// update.frequency -= (difference*10); //TEMPORARY
// if (update.frequency > MAX_FREQ)
// {
// update.frequency = MAX_FREQ;
// printf("frequency calculated above %d\n", MAX_FREQ);
// }
// else if (update.frequency < MIN_FREQ)
// {
// update.frequency = MIN_FREQ;
// printf("frequency calculated below %d\n", MIN_FREQ);
// }
// }
}
// update flag if frequency changed
if (prevFreq != update.frequency)
{
LOCK(&flagMutex);
SETFLAG(update.updateFlag, UPDATE_FREQ);
UNLOCK(&flagMutex);
}
}
