These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: EMAC/uIP/apps/hello-world/hello-world.c
- Revision:
- 0:bf7b9fba3924
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EMAC/uIP/apps/hello-world/hello-world.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,100 @@ +/** + * \addtogroup helloworld + * @{ + */ + +/** + * \file + * An example of how to write uIP applications + * with protosockets. + * \author + * Adam Dunkels <adam@sics.se> + */ + +/* + * This is a short example of how to write uIP applications using + * protosockets. + */ + +/* + * We define the application state (struct hello_world_state) in the + * hello-world.h file, so we need to include it here. We also include + * uip.h (since this cannot be included in hello-world.h) and + * <string.h>, since we use the memcpy() function in the code. + */ +#include "hello-world.h" +#include "uip.h" +#include <string.h> + +/* + * Declaration of the protosocket function that handles the connection + * (defined at the end of the code). + */ +static int handle_connection(struct hello_world_state *s); +/*---------------------------------------------------------------------------*/ +/* + * The initialization function. We must explicitly call this function + * from the system initialization code, some time after uip_init() is + * called. + */ +void +hello_world_init(void) +{ + /* We start to listen for connections on TCP port 1000. */ + uip_listen(HTONS(1000)); +} +/*---------------------------------------------------------------------------*/ +/* + * In hello-world.h we have defined the UIP_APPCALL macro to + * hello_world_appcall so that this funcion is uIP's application + * function. This function is called whenever an uIP event occurs + * (e.g. when a new connection is established, new data arrives, sent + * data is acknowledged, data needs to be retransmitted, etc.). + */ +void +hello_world_appcall(void) +{ + /* + * The uip_conn structure has a field called "appstate" that holds + * the application state of the connection. We make a pointer to + * this to access it easier. + */ + struct hello_world_state *s = &(uip_conn->appstate); + + /* + * If a new connection was just established, we should initialize + * the protosocket in our applications' state structure. + */ + if(uip_connected()) { + PSOCK_INIT(&s->p, s->inputbuffer, sizeof(s->inputbuffer)); + } + + /* + * Finally, we run the protosocket function that actually handles + * the communication. We pass it a pointer to the application state + * of the current connection. + */ + handle_connection(s); +} +/*---------------------------------------------------------------------------*/ +/* + * This is the protosocket function that handles the communication. A + * protosocket function must always return an int, but must never + * explicitly return - all return statements are hidden in the PSOCK + * macros. + */ +static int +handle_connection(struct hello_world_state *s) +{ + PSOCK_BEGIN(&s->p); + + PSOCK_SEND_STR(&s->p, "Hello. What is your name?\n"); + PSOCK_READTO(&s->p, '\n'); + strncpy(s->name, s->inputbuffer, sizeof(s->name)); + PSOCK_SEND_STR(&s->p, "Hello "); + PSOCK_SEND_STR(&s->p, s->name); + PSOCK_CLOSE(&s->p); + + PSOCK_END(&s->p); +} +/*---------------------------------------------------------------------------*/