ChuckBell
commented
5 years ago What version of MySQL are you using?
On Fri, Jan 11, 2019 at 11:16 chakthy notifications@github.com wrote:
I have been trying to use some of the examples to establish a connection with MySQL server. So far the WiFi connection is established, but once it goes to the "conn.connect(server_addr, 3306, user, password)" it seems to hang there. Memory doesn't seem to be an issue: Sketch uses 16612 bytes (33%) of program storage space. Maximum is 49152 bytes. Global variables use 683 bytes (11%) of dynamic memory, leaving 5461 bytes for local variables. Maximum is 6144 bytes.
MySQL server is running on a virtual machine inside my Mac. I have tested the mysql connection between the Mac and the virtual machine (both using different IP addresses). I added code on the Arduino to ping the virtual machine and it gets detected. I have tried another code to connect directly into the server that has the databases and it works, but of course this doesn't connect to MySQL so I tried to use the conn.connect() afterwards but it didn't work either. The connection doesn't fail, and the Arduino remains connected to the network. But the code doesn't go to the next line after the conn.connect(). Not sure if this is related to slight differences on the Arduino WiFi rev.2 Any ideas on how to debug the problem?
This is the code I'm using
include
include
include
include
byte mac_addr[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
char ssid[] = “my_network"; // your network SSID (name) char pass[] = “my_pass"; // your network password (use for WPA, or use as key for WEP) int status = WL_IDLE_STATUS; // the Wifi radio's status
IPAddress server_addr(X,X,X,X); // IP of the MySQL server here char user[] = “my_user"; char password[] = “my_pass2";
// Sample query char INSERT_SQL[] = "INSERT INTO RFID.log (card_num) VALUES ('2019')";
WiFiClient client; // Use this for WiFi instead of EthernetClient MySQL_Connection conn((Client )&client); MySQL_Cursor cursor;
void setup() { //Initialize serial and wait for port to open: Serial.begin(115200); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only }
// check for the WiFi module: if (WiFi.status() == WL_NO_MODULE) { Serial.println("Communication with WiFi module failed!"); // don't continue while (true); }
String fv = WiFi.firmwareVersion(); if (fv < "1.0.0") { Serial.println("Please upgrade the firmware"); }
// attempt to connect to Wifi network: while (status != WL_CONNECTED) { Serial.print("Attempting to connect to WPA SSID: "); Serial.println(ssid); // Connect to WPA/WPA2 network: status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
// you're connected now, so print out the data: Serial.print("You're connected to the network"); printCurrentNet(); printWifiData(); delay(5000);
Serial.println("Connecting to SQL..."); if (conn.connect(server_addr, 3306, user, password)) { delay(1000); Serial.println("Connected"); } else Serial.println("Connection failed."); conn.close();
}
void loop() { // check the network connection once every 10 seconds: delay(10000); printCurrentNet();
Serial.println("Recording data."); if (conn.connected()) cursor->execute(INSERT_SQL);
delay(5000);
// Initiate the query class instance MySQL_Cursor *cur_mem = new MySQL_Cursor(&conn); // Execute the query cur_mem->execute(INSERT_SQL); // Note: since there are no results, we do not need to read any data // Deleting the cursor also frees up memory used delete cur_mem;
}
void printWifiData() { // print your board's IP address: IPAddress ip = WiFi.localIP(); Serial.print("IP Address: "); Serial.println(ip);
// print your MAC address: byte mac[6]; WiFi.macAddress(mac); Serial.print("MAC address: "); printMacAddress(mac); }
void printCurrentNet() { // print the SSID of the network you're attached to: Serial.print("SSID: "); Serial.println(WiFi.SSID());
// print the MAC address of the router you're attached to: byte bssid[6]; WiFi.BSSID(bssid); Serial.print("BSSID: "); printMacAddress(bssid);
// print the received signal strength: long rssi = WiFi.RSSI(); Serial.print("signal strength (RSSI):"); Serial.println(rssi);
// print the encryption type: byte encryption = WiFi.encryptionType(); Serial.print("Encryption Type:"); Serial.println(encryption, HEX); Serial.println(); }
void printMacAddress(byte mac[]) { for (int i = 5; i >= 0; i--) { if (mac[i] < 16) { Serial.print("0"); } Serial.print(mac[i], HEX); if (i > 0) { Serial.print(":"); } } Serial.println(); }
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chakthy
Bolukan
jonesek
taufeeq-a
I have been trying to use some of the examples to establish a connection with MySQL server. So far the WiFi connection is established, but once it goes to the "conn.connect(server_addr, 3306, user, password)" it seems to hang there. Memory doesn't seem to be an issue: Sketch uses 16612 bytes (33%) of program storage space. Maximum is 49152 bytes. Global variables use 683 bytes (11%) of dynamic memory, leaving 5461 bytes for local variables. Maximum is 6144 bytes.
MySQL server is running on a virtual machine inside my Mac. I have tested the mysql connection between the Mac and the virtual machine (both using different IP addresses). I added code on the Arduino to ping the virtual machine and it gets detected. I have tried another code to connect directly into the server that has the databases and it works, but of course this doesn't connect to MySQL so I tried to use the conn.connect() afterwards but it didn't work either. The connection doesn't fail, and the Arduino remains connected to the network. But the code doesn't go to the next line after the conn.connect(). Not sure if this is related to slight differences on the Arduino WiFi rev.2 Any ideas on how to debug the problem?
This is the code I'm using
include
include
include
include
byte mac_addr[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
char ssid[] = “my_network"; // your network SSID (name) char pass[] = “my_pass"; // your network password (use for WPA, or use as key for WEP) int status = WL_IDLE_STATUS; // the Wifi radio's status
IPAddress server_addr(X,X,X,X); // IP of the MySQL server here char user[] = “my_user"; char password[] = “my_pass2";
// Sample query char INSERT_SQL[] = "INSERT INTO RFID.log (card_num) VALUES ('2019')";
WiFiClient client; // Use this for WiFi instead of EthernetClient MySQL_Connection conn((Client )&client); MySQL_Cursor cursor;
void setup() { //Initialize serial and wait for port to open: Serial.begin(115200); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only }
// check for the WiFi module: if (WiFi.status() == WL_NO_MODULE) { Serial.println("Communication with WiFi module failed!"); // don't continue while (true); }
String fv = WiFi.firmwareVersion(); if (fv < "1.0.0") { Serial.println("Please upgrade the firmware"); }
// attempt to connect to Wifi network: while (status != WL_CONNECTED) { Serial.print("Attempting to connect to WPA SSID: "); Serial.println(ssid); // Connect to WPA/WPA2 network: status = WiFi.begin(ssid, pass);
}
// you're connected now, so print out the data: Serial.print("You're connected to the network"); printCurrentNet(); printWifiData(); delay(5000);
Serial.println("Connecting to SQL..."); if (conn.connect(server_addr, 3306, user, password)) { delay(1000);
Serial.println("Connected"); } else Serial.println("Connection failed."); conn.close();
}
void loop() { // check the network connection once every 10 seconds: delay(10000); printCurrentNet();
Serial.println("Recording data."); if (conn.connected()) cursor->execute(INSERT_SQL);
// Initiate the query class instance MySQL_Cursor *cur_mem = new MySQL_Cursor(&conn); // Execute the query cur_mem->execute(INSERT_SQL); // Note: since there are no results, we do not need to read any data // Deleting the cursor also frees up memory used delete cur_mem;
}
void printWifiData() { // print your board's IP address: IPAddress ip = WiFi.localIP(); Serial.print("IP Address: "); Serial.println(ip);
// print your MAC address: byte mac[6]; WiFi.macAddress(mac); Serial.print("MAC address: "); printMacAddress(mac); }
void printCurrentNet() { // print the SSID of the network you're attached to: Serial.print("SSID: "); Serial.println(WiFi.SSID());
// print the MAC address of the router you're attached to: byte bssid[6]; WiFi.BSSID(bssid); Serial.print("BSSID: "); printMacAddress(bssid);
// print the received signal strength: long rssi = WiFi.RSSI(); Serial.print("signal strength (RSSI):"); Serial.println(rssi);
// print the encryption type: byte encryption = WiFi.encryptionType(); Serial.print("Encryption Type:"); Serial.println(encryption, HEX); Serial.println(); }
void printMacAddress(byte mac[]) { for (int i = 5; i >= 0; i--) { if (mac[i] < 16) { Serial.print("0"); } Serial.print(mac[i], HEX); if (i > 0) { Serial.print(":"); } } Serial.println(); }