Add config file read/write logic

include/Configuration.h

@@ -1,21 +1,26 @@
 #ifndef ARDUINO_H
- #define ARDUINO_H
- #include <Arduino.h>
+#define ARDUINO_H
+#include <Arduino.h>
 #endif
+#include "FS.h"
+#include "SPIFFS.h"
 
 struct Settings_t
 {
- char* wifiSsid;
- char* wifiPassword;
- char* hostName;
- char* tenantId;
- char* userName;
- char* password;
- char* clientId;
+ char *wifiSsid;
+ char *wifiPassword;
+ char *hostName;
+ char *tenantId;
+ char *userName;
+ char *password;
+ char *clientId;
 };
 
 class Configuration
 {
+private:
+ Settings_t readFromFileSystem(fs::FS &fs);
+ void writeToFileSystem(fs::FS &fs, Settings_t settings);
 public:
  Settings_t getSettings();
 };

src/Configuration.cpp

@@ -2,18 +2,84 @@
 #define CONFIGURATION_H
 #include "Configuration.h"
 #endif
+#include <string.h>
 
 #include "Credentials.h"
 
+const char *CONFIG_FILE_NAME = "settings";
+
 Settings_t Configuration::getSettings()
 {
  Settings_t settings;
- settings.wifiSsid = (char*)WIFI_SSID;
- settings.wifiPassword = (char*)WIFI_PWD;
- settings.hostName = (char*)C8Y_HOST;
- settings.tenantId = (char*)C8Y_TENANT;
- settings.userName = (char*)C8Y_USERNAME;
- settings.password = (char*)C8Y_PASSWORD;
- settings.clientId = (char*)C8Y_CLIENTID;
+ settings.wifiSsid = (char *)WIFI_SSID;
+ settings.wifiPassword = (char *)WIFI_PWD;
+ settings.hostName = (char *)C8Y_HOST;
+ settings.tenantId = (char *)C8Y_TENANT;
+ settings.userName = (char *)C8Y_USERNAME;
+ settings.password = (char *)C8Y_PASSWORD;
+ settings.clientId = (char *)C8Y_CLIENTID;
+ return settings;
+}
+
+void Configuration::writeToFileSystem(fs::FS &fs, Settings_t settings)
+{
+ Serial.printf("Writing file: %s\r\n", CONFIG_FILE_NAME);
+
+ File file = fs.open(CONFIG_FILE_NAME, FILE_WRITE);
+ if(!file){
+ Serial.println("- failed to open file for writing");
+ return;
+ }
+
+ String message;
+ message += settings.wifiSsid + '\n';
+ message += settings.wifiPassword + '\n';
+ message += settings.hostName + '\n';
+ message += settings.tenantId + '\n';
+ message += settings.userName + '\n';
+ message += settings.password + '\n';
+ message += settings.clientId + '\n';
+
+ if(file.print(message)){
+ Serial.println("- file written");
+ } else {
+ Serial.println("- write failed");
+ }
+ file.close();
+}
+
+
+Settings_t Configuration::readFromFileSystem(fs::FS &fs)
+{
+ Serial.printf("Reading file: %s\r\n", CONFIG_FILE_NAME);
+
+ char buffer[4096];
+
+ File file = fs.open(CONFIG_FILE_NAME, FILE_READ);
+ if (!file || file.isDirectory())
+ {
+ Serial.println("- failed to read the file");
+ throw(-1);
+ }
+
+ int length = 0;
+ while (file.available())
+ {
+ char c = file.read();
+ buffer[length++] = c;
+ }
+ buffer[length] = '\0';
+
+ Settings_t settings;
+ settings.wifiSsid = strtok(buffer, "\n");
+ settings.wifiPassword = strtok(NULL, "\n");
+ settings.hostName = strtok(NULL, "\n");
+ settings.tenantId = strtok(NULL, "\n");
+ settings.userName = strtok(NULL, "\n");
+ settings.password = strtok(NULL, "\n");
+ settings.clientId = strtok(NULL, "\n");
+
+ file.close();
+
  return settings;
 }