SCRIPT_TIME_START=$(date +%Y%m%dT%H%M%S.%N);
PATH="$HOME/.local/bin:$PATH"; # Add "$(systemd-path user-binaries)" path in case apps saved there
SCRIPT_HOSTNAME=$(hostname); # Save hostname of system running this script.
-SCRIPT_VERSION="0.4.4-alpha"; # Define version of script.
+SCRIPT_VERSION="0.4.4-alpha2"; # Define version of script.
SCRIPT_NAME="bkgpslog"; # Define basename of script file.
SCRIPT_URL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script.
AGE_VERSION="1.0.0-beta2"; # Define version of age (encryption program)
## Initialize variables
OPTION_VERBOSE=""; OPTION_ENCRYPT=""; OPTION_COMPRESS=""; OPTION_TMPDIR="";
errReset=0; BUFFER_TTL_ADJ_FLOAT="";
-### PID Control factors
-K_P=1; # Gain for compensating buffer round lag
-T_I=1000; # Consider this number of past buffer rounds to eliminate error
-T_D=1; # Predict value this number of buffer rounds into the future
#===BEGIN Declare local script functions===
checkapp() {
# errorHistorySize=100;
## Define BUFFER_TTL in nanoseconds
BUFFER_TTL_NS=$((BUFFER_TTL * 10**9)) && vbm "BUFFER_TTL_NS:$BUFFER_TTL_NS";
+
+ ### PID Control factors
+ K_P=1; # Gain for compensating buffer round lag
+ T_I="$(((4)*BUFFER_TTL_NS/(1)))"; # Consider this number of past nanoseconds to eliminate error
+ T_D="$(((1)*BUFFER_TTL_NS/(1)))"; # Predict value this number of nanoseconds into the future
# Calculate Error, errNS, in nanoseconds
## Get current time
# for value in "${errorHistory[@]}"; do
# errReset=$(( errReset + ( value*BUFFER_TTL_NS ) ));
# done;
- errReset="$(( (errReset + (errNS*BUFFER_TTL_NS)) ))" && vbm "errResetTerm:$errResetTerm";
+ vbm "errReset(orig):$errReset"
+ errReset="$(( (errReset + (errNS*BUFFER_TTL_NS)) ))" && vbm "errReset(post):$errReset";
# errResetx10e3="$(( ( errResetx10e3 + ( errNSx10e3 * BUFFER_TTL_NS ) )*10**3 ))" && vbm "errResetx10e3:$errResetx10e3";
# Calculate errRate in nanoseconds per nanosecond
- errRate="$(( errNS / BUFFER_TTL_NS ))" && vbm "errRateTerm:$errRateTerm";
+ errRate="$(( errNS / BUFFER_TTL_NS ))" && vbm "errRate:$errRate";
# errRatex10e3="$(( ( errNSx10e3 ) / BUFFER_TTL_NS ))" && vbm "errRatex10e3:$errRatex10e3";
+
+ # Debug
+ vbm "errNS :$errNS";
+ vbm "errResetTerm:$((errReset/T_I))";
+ vbm "errRateTerm :$((errRate*T_D))";
# Calculate PID control signal
## ADJ = K_P * (errNS + errReset/T_I + errRate*T_D)
yell "WARNING:Buffer lag adjustment yielded negative seconds.";
fi;
## Calculate nanosecond remainder
- BUFFER_TTL_ADJ_FLOATFRAC="$((BUFFER_TTL_NS - (BUFFER_TTL_ADJ_INT*(10**9)) ))" && vbm "BUFFER_TTL_ADJ_FLOATFRAC:$BUFFER_TTL_ADJ_FLOATFRAC";
+ ### Remove integer
+ BUFFER_TTL_ADJ_FLOATFRAC="$((BUFFER_TTL_ADJ_NS - (BUFFER_TTL_ADJ_INT*(10**9)) ))" && vbm "BUFFER_TTL_ADJ_FLOATFRAC:$BUFFER_TTL_ADJ_FLOATFRAC";
+ ### Calc absolute value of fraction (by removing '-' if present; see https://stackoverflow.com/a/47240327
+ BUFFER_TTL_ADJ_FLOATFRAC="${BUFFER_TTL_ADJ_FLOATFRAC#-}" && vbm "BUFFER_TTL_ADJ_FLOATFRAC:$BUFFER_TTL_ADJ_FLOATFRAC";
## Form float BUFFER_TTL_ADJ_FLOAT
BUFFER_TTL_ADJ_FLOAT="$BUFFER_TTL_ADJ_INT"."$BUFFER_TTL_ADJ_FLOATFRAC" && vbm "BUFFER_TTL_ADJ_FLOAT:$BUFFER_TTL_ADJ_FLOAT";
vbm "STATUS:Calculated adjusted BUFFER_TTL (seconds):$BUFFER_TTL_ADJ_FLOAT";