Hi Richard, Perhaps you could share your code? I'm using my derivative of the WiflyInterface, and with this code:
#include "mbed.h"
#include "WiflyInterface.h"
WiflyInterface eth(p28, p27, p23, p24, SSID, PASSCODE, WPA);
RawSerial pc(USBTX, USBRX);
static TCPSocketConnection socket;
#define ECHO_SERVER_ADDRESS "192.168.1.200"
#define ECHO_SERVER_PORT 80
DigitalOut myled(LED1);
int main() {
pc.baud(460800); // I like a snappy terminal, so crank it up!
pc.printf("\r\nWiFly Static Socket - Build " __DATE__ " " __TIME__ "\r\n");
do {
eth.init(); // start it up as a client of my network using DHCP
eth.baud(230400);
if (eth.connect())
break;
pc.printf(" Failed to connect, retrying...\r\n");
wait(1.0);
eth.reset();
} while (1);
int i = socket.connect(ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT);
if (i == 0)
pc.printf("connect success\r\n");
while(1) {
myled = 1;
wait(0.2);
myled = 0;
wait(0.2);
}
}
it prints this:
WiFly Static Socket - Build Apr 1 2014 15:31:25
connect success
Of course, the WiflyInterface constructor matches my baseboard and network. I also tried the same code with "static TCPSocketConnection socket;" inside main - no difference.
So, the other thing that comes to mind is if you have this defined in a thread - then even though static, perhaps the stack size may be a problem.
David Smart.
1 reply
I am using Wifly interface and rtos. If I define like this " static TCPSocketConnection socket;" and then when i do socket.connect(ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT), it will cause a hard fault. Specifically, it's IMPRECISERR. But if I define socket as a local variable. Every thing will be fine. Why does this happen??