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-rw-r--r--modbuslog.c71
1 files changed, 63 insertions, 8 deletions
diff --git a/modbuslog.c b/modbuslog.c
index 6d14ce1..e9346eb 100644
--- a/modbuslog.c
+++ b/modbuslog.c
@@ -18,6 +18,7 @@
*/
// gcc modbuslog.c -o modbuslog `pkg-config --libs --cflags libmodbus libconfig`
+
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
@@ -26,6 +27,7 @@
#include <unistd.h>
#include <sys/select.h>
#include <signal.h>
+#include <fcntl.h>
#include <libconfig.h>
#include <modbus.h>
@@ -39,7 +41,6 @@
#define SLAVE_ID 1
#define START_ADDRESS 0
#define NUMBER_REGISTERS 14
-#define DEBUG 1
void minute_check(int signum) {
alarm(60);
@@ -69,7 +70,15 @@ void find_mac(unsigned char* mac_address) {
int main(int argc, char *argv[]) {
- const char *CONFIG_FILE = "modbuslog.cfg";
+ const char *configfile = "modbuslog.cfg";
+
+ int DEBUG = 0;
+ int k;
+ for (k = 1; k < argc; k++) {
+ if (strcmp(argv[k], "-d") == 0) {
+ DEBUG = 1;
+ }
+ }
config_t cfg;
//config_setting_t *setting;
@@ -86,11 +95,11 @@ int main(int argc, char *argv[]) {
find_mac(mac_address);
- if (!config_read_file(&cfg, CONFIG_FILE)) {
+ if (!config_read_file(&cfg, configfile)) {
fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
config_error_line(&cfg), config_error_text(&cfg));
config_destroy(&cfg);
- fprintf(stderr, "Unable to find CONFIG_FILE.\n");
+ fprintf(stderr, "Unable to find configfile.\n");
return -1;
}
@@ -122,7 +131,7 @@ int main(int argc, char *argv[]) {
select(0, NULL, NULL, NULL, NULL);
time_t t = time(NULL);
- int unixtime_min = (((int) t) / 60 * 60);
+ time_t unixtime_min = (((int) t) / 60 * 60);
//int unixtime = (int) t;
//printf("%d\n", unixtime);
@@ -159,7 +168,7 @@ int main(int argc, char *argv[]) {
int intervalduration;
- if (intervalunit[0] == 'H')
+ if (intervalunit[0] == 'h')
intervalduration = intervalvalue * 3600;
else
intervalduration = intervalvalue * 60;
@@ -192,15 +201,61 @@ int main(int argc, char *argv[]) {
if (rc == -1) {
fprintf(stderr, "ERROR: %s\n", modbus_strerror(errno));
//return -1;
+ rc = modbus_read_input_registers(ctx, startaddress,
+ numregisters, tab_reg);
}
- for (i = 0; i < rc; i = i + 2) {
- printf("reg[%d]=%d\n", i, tab_reg[i] + tab_reg[i + 1]);
+ //<mac address>_YYYY_MM_DD_HH_MM_SS.log
+ time_t unixtime_day = ((((int) t) / 86400 * 86400) + 86400);
+
+ struct tm midnight = *localtime(&unixtime_day);
+
+ char filename[50];
+
+ sprintf(filename, "%s_%04i_%02i_%02i_%02i_%02i_%02i.log",
+ mac_address, midnight.tm_year + 1900,
+ midnight.tm_mon + 1, midnight.tm_mday, midnight.tm_hour,
+ midnight.tm_min, midnight.tm_sec);
+
+ //printf("%s\n",filename);
+
+ FILE *fp = fopen(filename, "r");
+ if (fp) {
+ fclose(fp);
+ } else {
+ // file doesn't exist. create it.
+ FILE *fp = fopen(filename, "w");
+ fprintf(
+ fp,
+ "IntervalID|UTCDate|UTCTime|LOCALDate|LOCALTime|SensorID|RegisterID|Reading\n");
+ fclose(fp);
}
+ FILE *filehandle = fopen(filename, "a+");
+
+ uint16_t registervalue = 0;
+
+ int p;
+ for (p = 0; p < numregisters; p = p + 2) {
+ registervalue += tab_reg[i] + tab_reg[i + 1];
+ }
+
+ struct tm utc = *gmtime(&unixtime_min);
+ struct tm lc = *localtime(&unixtime_min);
+
+ fprintf(
+ filehandle,
+ "1|%04i%02i%02i|%02i%02i%02i|%04i%02i%02i|%02i%02i%02i|%i|%i|%i\n",
+ utc.tm_year + 1900, utc.tm_mon + 1, utc.tm_mday,
+ utc.tm_hour, utc.tm_min, utc.tm_sec, lc.tm_year + 1900,
+ lc.tm_mon + 1, lc.tm_mday, lc.tm_hour, lc.tm_min,
+ lc.tm_sec, slaveid, startaddress, registervalue);
+ fclose(filehandle);
+
modbus_close(ctx);
modbus_free(ctx);
+ sleep(1);
//return 0;
}