adjust 1s store period

src/Makefile

@@ -3,15 +3,49 @@ CC=gcc
 CFLAGS=-Wall
 LDFLAGS=-lwiringPi -lcurl -lconfig
 
-counter:	counter.o LS7366R.o influx.o ringbuffer.o led.o
+INST_DIR=/opt/sbin
-	$(CC) -o $@ $(LDFLAGS) $^
 
-.c.o:
+REFCNT:=$(shell git rev-list --all --count) 
-	$(CC) $(CFLAGS) -c $<
+VERSION:=$(shell cat VERSION)
 
 .PHONY: all
 all:	counter
 
+counter:	counter.o LS7366R.o influx.o ringbuffer.o led.o logging.o version.o
+	$(CC) -o $@ $(LDFLAGS) $^
+
+version.o:	version.c VERSION
+	$(CC) -DD_REFCNT=$(REFCNT) -DD_VERSION=\"$(VERSION)\" -c $<
+
+.c.o:
+	$(CC) $(CFLAGS) -c $<
+
 .PHONY: clean
 clean:
 	-rm -f *.o counter
+
+.PHONY: update
+update:
+	sudo systemctl stop counter
+	sudo cp counter $(INST_DIR)
+	sudo systemctl start counter
+
+.PHONY: install
+install:
+	sudo mkdir -p $(INST_DIR)
+	sudo cp counter counter.service $(INST_DIR)
+	sudo systemctl enable $(INST_DIR)/counter.service
+	sudo systemctl start counter
+
+.PHONY: stop
+stop:
+	sudo systemctl stop counter
+
+.PHONY: start
+start:
+	sudo systemctl start counter
+
+.PHONY: restart
+restart:
+	sudo systemctl restart counter
+

src/VERSION

@@ -0,0 +1 @@
+0.97

src/counter.c

@@ -5,13 +5,18 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <libconfig.h>
+#include <math.h>
 
 #include "LS7366R.h"
 #include "influx.h"
 #include "ringbuffer.h"
 #include "led.h"
+#include "logging.h"
 
 
+extern char VERSION[];
+extern uint32_t REFCNT;
+
 const int CTRL_OUT = 16;
 const int INTR_IN  = 19;
 const int SPI_CHAN = 0;
@@ -51,7 +56,7 @@ void init() {
 void readConfig() {
   config_init(&cfg);
   if (! config_read_file(&cfg, "/opt/etc/counter.cfg")) {
-    fprintf(stderr, "failed to read config file: %s:%d - %s\n",
+    logmsg(LOG_ERR, "failed to read config file: %s:%d - %s\n",
         config_error_file(&cfg), config_error_line(&cfg),
         config_error_text(&cfg));
     config_destroy(&cfg);
@@ -64,6 +69,7 @@ void start() {
 }
 
 int main (void) {
+  fprintf(stderr, "VERSION: %s, REFCNT: %u\n", VERSION, REFCNT);
 
   readConfig();
   init();
@@ -76,31 +82,40 @@ int main (void) {
   if (! config_lookup_float(&cfg, EPSILON_KEY, &epsilon)) {
     epsilon = DEFAULT_EPSILON;
   }
+  fprintf(stderr, "CONFIG: epsilon=%f\n", epsilon);
   
 
   double lastF = 0;
   bool settled = false;
   uint8_t ledTick = 0;  
+
   while (1) {
-    uint32_t diff = ringbufferGet();
+    uint32_t period = ringbufferGet();
   
-    double f = 1.0 / (((double) diff) / 1000000.0);
+    double fRaw = 1.0 / (((double) period) / 1000000.0);
+    int valid = settled ? 1 : 0;
 
-    if (settled && (abs(f - lastF) > epsilon)) {
+    double gradient = fRaw - lastF;
-      printf("Current f=%f, last f=%f, gradient too large, skipped\n", f, lastF);
+    double fSmoothed = fRaw;
+    if (settled && (fabs(gradient) > epsilon)) {
+      logmsg(LOG_INFO, "Current f=%f, last f=%f, gradient %f too large, invalid\n", fRaw, lastF, gradient);
       skipped++;
-      f = lastF;
+      fSmoothed = lastF;
+      valid = 0;
+    } else {
+      lastF = fRaw;
+    }
+
+    if (settled) {
+      influxAddFrequency(period, fRaw, fSmoothed, gradient, valid);
     }
-    lastF = f;
-//    printf("%f\n", f);
-    influxAddFrequency(f);
 
     ledTick++;
     if (ledTick == 50) {
       ledTick = 0;
       led(E_GREEN, false);
       if (! settled) {
-        printf("Now it is settled\n");
+        logmsg(LOG_INFO, "Now it is settled\n");
         settled = true;
       }
     }

src/counter.service

@@ -6,9 +6,7 @@ After=network-online.target
 
 [Service]
 Type=simple
-GuessMainPID=yes
+ExecStart=/opt/sbin/counter
-ExecStart=/opt/bin/counter
-ExecStop=kill -SIGINT $mainpid
 Restart=on-failure
 WorkingDirectory=/tmp
 

src/influx.c

@@ -1,5 +1,6 @@
 #include <stdint.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <curl/curl.h>
 #include <time.h>
 #include <string.h>
@@ -7,6 +8,7 @@
 #include <libconfig.h>
 
 #include "led.h"
+#include "logging.h"
 
 
 const char INFLUXURL_KEY[] = "influxUrl";
@@ -18,6 +20,12 @@ const char INFLUXPASS_KEY[] = "influxPass";
 const char *influxPass;
 const char INFLUXTAG_KEY[] = "influxTag";
 const char *influxTag;
+const char DEFAULT_LOCATION[] = "Essen_DE";
+const char LOCATION_KEY[] = "location";
+const char *location;
+
+const uint8_t ONE_SECOND_DIVIDER = 50;
+
 
 extern uint32_t skipped;
 
@@ -25,15 +33,34 @@ extern uint32_t skipped;
 // #define BUFSIZE 131070
 #define BUFSIZE 65535
 // #define BUFSIZE 1024
-char influxBuffer[BUFSIZE];
+// char influxBuffer[BUFSIZE];
-char *bufferNextEntry;
+// char *bufferNextEntry;
+
+typedef struct influxBuffer {
+    uint32_t entries;
+    uint32_t totalEntries;
+    char *nextEntry;
+    char buffer[BUFSIZE];
+} tInfluxBuffer;
+
+typedef enum {
+    PERIOD_20MS = 0,
+    PERIOD_1S,
+    PERIOD_END
+} ePeriod;
+
+tInfluxBuffer *influxBuffers[PERIOD_END];
 
 #define HOSTNAMESIZE 128
 char hostname[HOSTNAMESIZE];
 
-static void influxClearBuffer() {
+static void influxClearBuffer(tInfluxBuffer *influxBuffer, bool initial) {
-    memset(influxBuffer, 0, BUFSIZE);
+    memset(influxBuffer->buffer, 0, BUFSIZE);
-    bufferNextEntry = influxBuffer;
+    influxBuffer->nextEntry = influxBuffer->buffer;
+    influxBuffer->entries = 0;
+    if (initial) {
+        influxBuffer->totalEntries = 0;
+    }
 
 }
 
@@ -41,22 +68,33 @@ void influxInit(config_t *pCfg) {
     if (! config_lookup_string(pCfg, INFLUXURL_KEY, &influxUrl)) {
         influxUrl = DEFAULT_INFLUXURL;
     }
+    fprintf(stderr, "CONFIG: influxUrl=%s\n", influxUrl);
     if (! config_lookup_string(pCfg, INFLUXUSER_KEY, &influxUser)) {
         influxUser = NULL;
     }
+    fprintf(stderr, "CONFIG: influxUser=%s\n", (influxUser == NULL ? "<null>" : influxUser));
     if (! config_lookup_string(pCfg, INFLUXPASS_KEY, &influxPass)) {
         influxPass = NULL;
     }
+    fprintf(stderr, "CONFIG: influxPass=%s\n", (influxPass == NULL ? "<null>" : influxPass));
+    if (! config_lookup_string(pCfg, LOCATION_KEY, &location)) {
+        location = DEFAULT_LOCATION;
+    }
+    fprintf(stderr, "CONFIG: location=%s\n", location);
     if (! config_lookup_string(pCfg, INFLUXTAG_KEY, &influxTag)) {
         gethostname(hostname, HOSTNAMESIZE);
         influxTag = hostname;
     }
-    influxClearBuffer();
+    fprintf(stderr, "CONFIG: influxTag=%s\n", influxTag);
+    influxBuffers[PERIOD_20MS] = (tInfluxBuffer*) malloc(sizeof(tInfluxBuffer));
+    influxClearBuffer(influxBuffers[PERIOD_20MS], true);
+    influxBuffers[PERIOD_1S] = (tInfluxBuffer*) malloc(sizeof(tInfluxBuffer));
+    influxClearBuffer(influxBuffers[PERIOD_1S], true);
 }
 
 
 
-static void influxSendRequest() {
+static void influxSendRequest(tInfluxBuffer *influxBuffer) {
     led(E_RED, false);
     led(E_BLUE, true);
     CURL *curl = curl_easy_init();
@@ -67,10 +105,10 @@ static void influxSendRequest() {
             curl_easy_setopt(curl, CURLOPT_USERNAME, influxUser);
             curl_easy_setopt(curl, CURLOPT_PASSWORD, influxPass);
         }
-        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, influxBuffer);
+        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, influxBuffer->buffer);
         CURLcode res = curl_easy_perform(curl);
         if(res != CURLE_OK) {
-            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
+            logmsg(LOG_ERR, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
             led(E_RED, true);
         }
         curl_easy_cleanup(curl);
@@ -78,27 +116,64 @@ static void influxSendRequest() {
     led(E_BLUE, false);
 }
 
-void influxAddFrequency(double f) {
+void influxAddFrequency(uint32_t period, double fRaw, double fSmoothed, double gradient, 
-    static uint32_t entries = 0;
+                        int valid) {
-    static uint32_t totalEntries = 0;
+    static uint8_t divider = 0;
+    static uint32_t summedUpTime = 0;
     char tmpBuf[256];
     struct timespec t;
 
     clock_gettime(CLOCK_REALTIME, &t);
     uint64_t tt = (((uint64_t)t.tv_sec) * 1000) + (((uint64_t)t.tv_nsec) / 1000000);
-    int c = sprintf(tmpBuf, "mainsfrequency,host=%s freq=%f %llu\n", influxTag, f, tt);
+    int c = sprintf(tmpBuf, "mainsfrequency,host=%s,valid=%d,location=%s "
+                            "period=%u,freq=%f,freqSmoothed=%f,gradient=%f,freqRaw=%f "
+                            "%llu\n",
+                            influxTag, valid, location, 
+                            period, fSmoothed, fSmoothed, gradient, fRaw, 
+                            tt);
 
-    if ((bufferNextEntry + c + 10) > (influxBuffer + BUFSIZE)) {
+    if ((influxBuffers[PERIOD_20MS]->nextEntry + c + 10) > (influxBuffers[PERIOD_20MS]->buffer + BUFSIZE)) {
-        influxSendRequest();
+        influxSendRequest(influxBuffers[PERIOD_20MS]);
-        influxClearBuffer();
+        influxBuffers[PERIOD_20MS]->totalEntries += influxBuffers[PERIOD_20MS]->entries;
-        totalEntries += entries;
+        logmsg(LOG_INFO, "%u 20ms-entries sent to database, in total %u, invalid: %u\n", 
-        fprintf(stderr, "%u entries sent to database, in total %u, skipped: %u\n", entries, totalEntries, skipped);
+            influxBuffers[PERIOD_20MS]->entries, influxBuffers[PERIOD_20MS]->totalEntries, skipped);
-        entries = 0;
+        influxClearBuffer(influxBuffers[PERIOD_20MS], false);
     }
 
-    memcpy(bufferNextEntry, tmpBuf, c);
+    memcpy(influxBuffers[PERIOD_20MS]->nextEntry, tmpBuf, c);
-    bufferNextEntry += c;
+    influxBuffers[PERIOD_20MS]->nextEntry += c;
-    entries++;
+    influxBuffers[PERIOD_20MS]->entries += 1;
+
+    summedUpTime += period;
+    divider += 1;
+
+    if (divider == ONE_SECOND_DIVIDER) {
+        double freq1S = ((double)ONE_SECOND_DIVIDER) / (((double)summedUpTime) / 1000000.0); 
+        logmsg(LOG_DEBUG, "%llu: %u %f\n", tt, summedUpTime, freq1S);
+
+        int c = sprintf(tmpBuf, "mainsfrequency1S,host=%s,location=%s "
+                                "freq=%f "
+                                "%llu\n",
+                                influxTag, location, 
+                                freq1S, 
+                                tt);
+
+        //if ((influxBuffers[PERIOD_1S]->nextEntry + c + 10) > (influxBuffers[PERIOD_1S]->buffer + BUFSIZE)) {
+        if (influxBuffers[PERIOD_1S]->entries == 30) {
+            influxSendRequest(influxBuffers[PERIOD_1S]);
+            influxBuffers[PERIOD_1S]->totalEntries += influxBuffers[PERIOD_1S]->entries;
+            logmsg(LOG_INFO, "%u 1s-entries sent to database, in total %u\n", 
+                influxBuffers[PERIOD_1S]->entries, influxBuffers[PERIOD_1S]->totalEntries);
+            influxClearBuffer(influxBuffers[PERIOD_1S], false);
+        }
+
+        memcpy(influxBuffers[PERIOD_1S]->nextEntry, tmpBuf, c);
+        influxBuffers[PERIOD_1S]->nextEntry += c;
+        influxBuffers[PERIOD_1S]->entries += 1;
+
+        divider = 0;
+        summedUpTime = 0.0;
+    }
 }
 
 

src/influx.h

@@ -3,7 +3,7 @@
 
 #include <libconfig.h>
 
-void influxAddFrequency(double f);
+void influxAddFrequency(uint32_t period, double fRaw, double fSmoothed, double gradient, int valid);
 void influxInit(config_t *pCfg);
 
 #endif // _INFLUX_H_

src/logging.c

@@ -0,0 +1,13 @@
+#include <syslog.h>
+#include <stdarg.h>
+
+void logmsg(int prio, const char* format, ...) {
+  va_list vl;
+  
+  openlog("counter", 0, LOG_LOCAL0);
+  va_start(vl, format);
+  vsyslog(prio, format, vl);
+  va_end(vl);
+  closelog();
+}
+

src/logging.h

@@ -0,0 +1,8 @@
+#ifndef _LOGGING_H_
+#define _LOGGING_H_
+
+#include <syslog.h>
+
+void logmsg(int prio, const char* format, ...);
+
+#endif // _LOGGING_H_

src/version.c

@@ -0,0 +1,6 @@
+#include <stdint.h>
+
+const uint32_t REFCNT = D_REFCNT;
+const char VERSION[] = D_VERSION;
+
+