berkaysit
commented
6 years ago It's better if give more information;
I have Arduino MKR1000 and MariaDB Server installed on a remote machine on Azure.
The Example "Connect_Wifi" works great if I change the #include <WiFi.h> statement as #include <WiFi101.h> So we see the example can connect to Maria DB without doubt. After that, I would like to change the code of basic_select example. Because of it writen for Ethernet, I replaced the lines about network connection with Wifi101 required strings. So, I replaced the following original lines
EthernetClient client;
MySQL_Connection conn((Client *)&client);
// Create an instance of the cursor passing in the connection
MySQL_Cursor cur = MySQL_Cursor(&conn);
void setup() {
Serial.begin(115200);
while (!Serial); // wait for serial port to connect
Ethernet.begin(mac_addr);
Serial.println("Connecting...");
if (conn.connect(server_addr, 3306, user, password)) {
delay(1000);
}
else
Serial.println("Connection failed.");
}with following lines
WiFiClient client; // Use this for WiFi instead of EthernetClient
MySQL_Connection conn((Client *)&client);
// Create an instance of the cursor passing in the connection
MySQL_Cursor cur = MySQL_Cursor(&conn);
void setup() {
Serial.begin(115200);
while (!Serial); // wait for serial port to connect
// Begin WiFi section
int status = WiFi.begin(ssid, pass);
if ( status != WL_CONNECTED) {
Serial.println("Couldn't get a wifi connection");
while(true);
}
// print out info about the connection:
else {
Serial.println("Connected to network");
IPAddress ip = WiFi.localIP();
Serial.print("My IP address is: ");
Serial.println(ip);
}
// End WiFi sectionLater, I uploeded the sketch to the Arduino and it stoped working. It even can not connect as a COM port to PC. If I comment the line MySQL_Cursor cur = MySQL_Cursor(&conn); and all the loop() block, it can work, of course only make a WiFi connection.
ChuckBell
https://github.com/ChuckBell/MySQL_Connector_Arduino/blob/17a379a6604f65cc3278b40eab449c5a48a90a35/examples/basic_select/basic_select.ino#L47
This line locks the Arduino MKR1000 after uploding the example sketch. Arduino couldn't get any COM port on Windows Device Manager and doesn't do anything. I have to use reset pin for bootloader startup and upload another safe sketch (Blink ) in order to set the device normal operating.