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fixed some naming conventions, error catching with opening json file, read all json in, append to array, overwrite file

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Brian
2026-04-06 13:22:54 -06:00
parent ef5ff78b36
commit 9cec82ab1f
1 changed files with 6 additions and 5 deletions
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src/main.c
+6 -5
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@@ -115,11 +115,11 @@ int8_t save_data_to_json_file(struct bme280_data *sensor_readings_data)
timeinfo = localtime(&rawtime); timeinfo = localtime(&rawtime);
strftime(dateString, 32, "%F", timeinfo); strftime(dateString, 32, "%F", timeinfo);
strftime(timeString, 32, "%H_%M_%S", timeinfo); strftime(timeString, 32, "%H:%M:%S", timeinfo);
//puts(dateString); //puts(dateString);
//time(&rawtime); //time(&rawtime);
snprintf(filename, sizeof(filename), "readings_%s.json", dateString); snprintf(filename, sizeof(filename), "%s.json", dateString);
if (!check_file_exists(filename)) if (!check_file_exists(filename))
{ {
@@ -132,7 +132,7 @@ int8_t save_data_to_json_file(struct bme280_data *sensor_readings_data)
jsonFilePtr = fopen(filename, "r+"); jsonFilePtr = fopen(filename, "r+");
if (jsonFilePtr == NULL) if (jsonFilePtr == NULL)
{ {
sprintf("Failed to open %s", filename); fprintf(stderr, "Failed to open %s\n", filename);
exit(1); exit(1);
} }
fread(jsonBuffer, 1024, 1, jsonFilePtr); fread(jsonBuffer, 1024, 1, jsonFilePtr);
@@ -183,7 +183,8 @@ int8_t save_data_to_json_file(struct bme280_data *sensor_readings_data)
#endif #endif
json_object_object_add(parsed_json, timeString, latest_reading_object); json_object_object_add(parsed_json, timeString, latest_reading_object);
//fprintf(jsonFilePtr, json_object_to_json_string(parsed_json)); fseek(jsonFilePtr, 0, SEEK_SET);
ftruncate(fileno(jsonFilePtr), 0);
fputs(json_object_to_json_string(parsed_json), jsonFilePtr); fputs(json_object_to_json_string(parsed_json), jsonFilePtr);
printf("json to write out: %s \n", json_object_to_json_string(latest_reading_object)); printf("json to write out: %s \n", json_object_to_json_string(latest_reading_object));
printf("new json to write out: %s \n", json_object_to_json_string(parsed_json)); printf("new json to write out: %s \n", json_object_to_json_string(parsed_json));
@@ -214,7 +215,7 @@ int8_t read_sensor_data_normal_mode(struct bme280_dev *dev)
dev->delay_ms(200); // wait for first measurement dev->delay_ms(200); // wait for first measurement
readings_result = bme280_get_sensor_data(BME280_ALL, &sensor_readings_data, dev); readings_result = bme280_get_sensor_data(BME280_ALL, &sensor_readings_data, dev);
print_sensor_data(&sensor_readings_data); print_sensor_data(&sensor_readings_data);
//save_data_to_json_file(&sensor_readings_data); save_data_to_json_file(&sensor_readings_data);
return readings_result; return readings_result;
} }