u16 LCD_GetPoint(u16 x,u16 y)//读取某像素点的颜色值
{
u16 pixel=0;
Set_Addr(x,y);
LCD_Read();
DelayN(2);
pixel=LCD_Read();
return pixel;
}
*/ DEVICE_CMD Listen_Socket(REBREQ *sock)
/*
** Setup a server (listening) socket (TCP or UDP).
**
** Before usage:
** Open_Socket();
** Set local_port to desired port number.
**
** Use this instead of Connect_Socket().
**
***********************************************************************/
{
int result;
int len = 1;
SOCKAI sa;
// Setup socket address range and port:
Set_Addr(&sa, INADDR_ANY, sock->net.local_port);
// Allow listen socket reuse:
result = setsockopt(sock->socket, SOL_SOCKET, SO_REUSEADDR, (char*)(&len), sizeof(len));
if (result) {
lserr:
sock->error = GET_ERROR;
return DR_ERROR;
}
// Bind the socket to our local address:
result = bind(sock->socket, (struct sockaddr *)&sa, sizeof(sa));
if (result) goto lserr;
SET_FLAG(sock->state, RSM_BIND);
// For TCP connections, setup listen queue:
if (!GET_FLAG(sock->modes, RST_UDP)) {
result = listen(sock->socket, SOMAXCONN);
if (result) goto lserr;
SET_FLAG(sock->state, RSM_LISTEN);
}
Get_Local_IP(sock);
sock->command = RDC_CREATE; // the command done on wakeup
return DR_PEND;
}
void LCD_SetPoint(u16 x,u16 y,u8 color)//以指定的颜色填充某一像素点
{
Set_Addr(x,y);
Write_DAT(colors[color]);
}
*/ DEVICE_CMD Connect_Socket(REBREQ *sock)
/*
** Connect a socket to a service.
** Only required for connection-based protocols (e.g. not UDP).
** The IP address must already be resolved before calling.
**
** This function is asynchronous. It will return immediately.
** You can call this function again to check the pending connection.
**
** The function will return:
** =0: connection succeeded (or already is connected)
** >0: in-progress, still trying
** <0: error occurred, no longer trying
**
** Before usage:
** Open_Socket() -- to allocate the socket
**
***********************************************************************/
{
int result;
SOCKAI sa;
if (GET_FLAG(sock->modes, RST_LISTEN))
return Listen_Socket(sock);
if (GET_FLAG(sock->state, RSM_CONNECT)) return DR_DONE; // already connected
Set_Addr(&sa, sock->net.remote_ip, sock->net.remote_port);
result = connect(sock->socket, (struct sockaddr *)&sa, sizeof(sa));
if (result != 0) result = GET_ERROR;
WATCH2("connect() error: %d - %s\n", result, strerror(result));
switch (result) {
case 0: // no error
case NE_ISCONN:
// Connected, set state:
CLR_FLAG(sock->state, RSM_ATTEMPT);
SET_FLAG(sock->state, RSM_CONNECT);
Get_Local_IP(sock);
Signal_Device(sock, EVT_CONNECT);
return DR_DONE; // done
#ifdef TO_WIN32
case NE_INVALID: // Corrects for Microsoft bug
#endif
case NE_WOULDBLOCK:
case NE_INPROGRESS:
case NE_ALREADY:
// Still trying:
SET_FLAG(sock->state, RSM_ATTEMPT);
return DR_PEND;
default:
// An error happened:
CLR_FLAG(sock->state, RSM_ATTEMPT);
sock->error = result;
//Signal_Device(sock, EVT_ERROR);
return DR_ERROR;
}
}
