I have a TCPSocket* object which holds a connection to a client. This object is passed to another object to send data back to the client:
uint32_t count = 10; char message[4]; message[0] = count & 0xff; message[1] = (count >> 8) & 0xff; message[2] = (count >> 16) & 0xff; message[3] = (count >> 24) & 0xff; client->send(&message, strlen(message)); When this part of the program is called, the following appears on the serial line, and no data is received by the client:
++ MbedOS Fault Handler ++ FaultType: HardFault Context: R0 : 00000000 R1 : 10008000 R2 : 00000004 R3 : 2007C000 R4 : 10000914 R5 : 00000000 R6 : 00000000 R7 : 10004330 R8 : 10004320 R9 : FFFFF435 R10 : 00000000 R11 : 00000000 R12 : 00012AC1 SP : 10002AF0 LR : 0000D1A1 PC : 00005938 xPSR : 21000000 PSP : 10002AD0 MSP : 10007FD8 CPUID: 412FC230 HFSR : 40000000 MMFSR: 00000000 BFSR : 00000082 UFSR : 00000000 DFSR : 0000000A AFSR : 00000000 BFAR : 10008010 Mode : Thread Priv : Privileged Stack: PSP -- MbedOS Fault Handler -- ++ MbedOS Error Info ++ Error Status: 0x80FF013D Code: 317 Module: 255 Error Message: Fault exception Location: 0xD337 Error Value: 0x5938 Current Thread: main Id: 0x10002B48 Entry: 0xD7D7 StackSize: 0x1000 StackMem: 0x10001B48 SP: 0x10007F88 For more info, visit: https://armmbed.github.io/mbedos-error/?error=0x80FF013D -- MbedOS Error Info -- Everything is in one thread so I cant see what could be causing this.
These are the relevant parts of the program:
main:
// Network interface EthernetInterface net; TCPSocket listener; //listens for incoming connection requests TCPSocket* client; CommandProcessor commandProcessor(client); int main(){ int remaining; int rcount; char *p; char *buffer = new char[16]; nsapi_size_or_error_t result; int n = net.set_network("192.168.1.103","255.255.255.0","192.168.1.2"); pc.printf("\n Success? %d\n", n); net.connect(); listener.open(&net); listener.bind(3045); listener.listen(1); client = listener.accept(NULL); client->set_timeout(1000); led1 = 1; while(1) { int remaining = 16; int rcount = 0; p = buffer; while (remaining > 0 && 0 < (result = client->recv(p, remaining))) { p += result; rcount += result; remaining -= result; } if (remaining == 0) //full message received { commandProcessor.process(buffer); } } } CommandProcessor:
CommandProcessor::CommandProcessor(TCPSocket* client) { this->client = client; } void CommandProcessor::process(char* message) { switch(message[0]) { //Command is first byte of message case 0x3: { uint32_t count = 10 ; char* message = new char[4]; message[0] = count & 0xff; message[1] = (count >> 8) & 0xff; message[2] = (count >> 16) & 0xff; message[3] = (count >> 24) & 0xff; client->send(message, sizeof(message)); } } 
