sani7/2023-Webservices_And_Applications
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

check

Browse Source
This commit is contained in:
Obe Van Lierde
2023-11-07 00:41:31 +01:00
parent 59712ff495
commit 1850f1de59
1 changed files with 12 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
project/Core/Src/modbus.c
View File

@@ -14,14 +14,6 @@ struct Data_Modbus {//registers to hold the data of the modbus
struct Data_Modbus datamodbus;
/*
static void echo_close (struct tcp_pcb *pcb )
{
tcp_arg(pcb, NULL);
tcp_sent(pcb, NULL);
tcp_recv(pcb, NULL);
tcp_close(pcb);
}
static err_t echo_recv( void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err )
{
int i;
@@ -64,11 +56,14 @@ static err_t echo_recv( void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t er
}
*/
static void modbus_incomming_data(){
void *data;
u16_t len;
static err_t modbus_incomming_data(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err){
int i;
int len;
char *pc;
printf("data incomming\n");
return ERR_OK;
}
static err_t modbus_accept(void *arg, struct tcp_pcb *pcb, err_t err )
@@ -76,7 +71,7 @@ static err_t modbus_accept(void *arg, struct tcp_pcb *pcb, err_t err )
LWIP_UNUSED_ARG( arg );//Eliminates compiler warning about unused arguments
LWIP_UNUSED_ARG( err );//Eliminates compiler warning about unused arguments
tcp_setprio( pcb, TCP_PRIO_MIN );//Sets the priority of a connection.
tcp_recv( pcb, modbus_incomming_data() );//sets which function is being called when new data arives
tcp_recv( pcb, modbus_incomming_data);//sets which function is being called when new data arives
tcp_err( pcb, NULL );//sets the function thats called when an error ocours
tcp_poll( pcb, NULL, 4 );//the aplication is being polled every 4 seconds
tcp_write( pcb, "TEST\r\n", 8, 0 );//pcb , data , lenght in bytes , apiflags
@@ -88,10 +83,10 @@ static err_t modbus_accept(void *arg, struct tcp_pcb *pcb, err_t err )
void modbus_init( void )
{
struct tcp_pcb *tcp_pcb;
tcp_pcb = tcp_new();
tcp_bind(tcp_pcb, IP_ADDR_ANY, MODBUSPOORT);
struct tcp_pcb *modbus_pcb;
modbus_pcb = tcp_new();//creating a new tcp pcb
tcp_bind(modbus_pcb, IP_ADDR_ANY, MODBUSPOORT);//bind the modbus_pcb to port 502
tcp_pcb = tcp_listen( tcp_pcb );
tcp_accept( tcp_pcb, modbus_accept );
modbus_pcb = tcp_listen( modbus_pcb );//listen
tcp_accept(modbus_pcb, modbus_accept);//set callback function
}