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PicoW_UDP_Lib
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Converting source to lib.

This commit is contained in:
Ulysse Cura 2026-09-01 17:41:01 +02:00
parent abc92dfe4d
commit 3431525a1f
2 changed files with 264 additions and 0 deletions
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92
lwipopts.h Normal file
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#ifndef _LWIPOPTS_EXAMPLE_COMMONH_H
#define _LWIPOPTS_EXAMPLE_COMMONH_H
// Common settings used in most of the pico_w examples
// (see https://www.nongnu.org/lwip/2_1_x/group__lwip__opts.html for details)
// allow override in some examples
#ifndef NO_SYS
#define NO_SYS 1
#endif
// allow override in some examples
#ifndef LWIP_SOCKET
#define LWIP_SOCKET 0
#endif
#if PICO_CYW43_ARCH_POLL
#define MEM_LIBC_MALLOC 1
#else
// MEM_LIBC_MALLOC is incompatible with non polling versions
#define MEM_LIBC_MALLOC 0
#endif
#define MEM_ALIGNMENT 4
#ifndef MEM_SIZE
#define MEM_SIZE 4000
#endif
#define MEMP_NUM_TCP_SEG 32
#define MEMP_NUM_ARP_QUEUE 10
#define PBUF_POOL_SIZE 24
#define LWIP_ARP 1
#define LWIP_ETHERNET 1
#define LWIP_ICMP 1
#define LWIP_RAW 1
#define TCP_WND (8 * TCP_MSS)
#define TCP_MSS 1460
#define TCP_SND_BUF (8 * TCP_MSS)
#define TCP_SND_QUEUELEN ((4 * (TCP_SND_BUF) + (TCP_MSS - 1)) / (TCP_MSS))
#define LWIP_NETIF_STATUS_CALLBACK 1
#define LWIP_NETIF_LINK_CALLBACK 1
#define LWIP_NETIF_HOSTNAME 1
#define LWIP_NETCONN 0
#define MEM_STATS 0
#define SYS_STATS 0
#define MEMP_STATS 0
#define LINK_STATS 0
// #define ETH_PAD_SIZE 2
#define LWIP_CHKSUM_ALGORITHM 3
#define LWIP_DHCP 1
#define LWIP_IPV4 1
#define LWIP_TCP 1
#define LWIP_UDP 1
#define LWIP_DNS 1
#define LWIP_TCP_KEEPALIVE 1
#define LWIP_NETIF_TX_SINGLE_PBUF 1
#define DHCP_DOES_ARP_CHECK 0
#define LWIP_DHCP_DOES_ACD_CHECK 0
#ifndef NDEBUG
#define LWIP_DEBUG 1
#define LWIP_STATS 1
#define LWIP_STATS_DISPLAY 1
#endif
#define ETHARP_DEBUG LWIP_DBG_OFF
#define NETIF_DEBUG LWIP_DBG_OFF
#define PBUF_DEBUG LWIP_DBG_OFF
#define API_LIB_DEBUG LWIP_DBG_OFF
#define API_MSG_DEBUG LWIP_DBG_OFF
#define SOCKETS_DEBUG LWIP_DBG_OFF
#define ICMP_DEBUG LWIP_DBG_OFF
#define INET_DEBUG LWIP_DBG_OFF
#define IP_DEBUG LWIP_DBG_OFF
#define IP_REASS_DEBUG LWIP_DBG_OFF
#define RAW_DEBUG LWIP_DBG_OFF
#define MEM_DEBUG LWIP_DBG_OFF
#define MEMP_DEBUG LWIP_DBG_OFF
#define SYS_DEBUG LWIP_DBG_OFF
#define TCP_DEBUG LWIP_DBG_OFF
#define TCP_INPUT_DEBUG LWIP_DBG_OFF
#define TCP_OUTPUT_DEBUG LWIP_DBG_OFF
#define TCP_RTO_DEBUG LWIP_DBG_OFF
#define TCP_CWND_DEBUG LWIP_DBG_OFF
#define TCP_WND_DEBUG LWIP_DBG_OFF
#define TCP_FR_DEBUG LWIP_DBG_OFF
#define TCP_QLEN_DEBUG LWIP_DBG_OFF
#define TCP_RST_DEBUG LWIP_DBG_OFF
#define UDP_DEBUG LWIP_DBG_OFF
#define TCPIP_DEBUG LWIP_DBG_OFF
#define PPP_DEBUG LWIP_DBG_OFF
#define SLIP_DEBUG LWIP_DBG_OFF
#define DHCP_DEBUG LWIP_DBG_OFF
#endif /* __LWIPOPTS_H__ */

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main.c Normal file
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// Necessary includes from the Pico SDK
#include <pico/stdio.h>
#include <stdio.h>
#include <pico/cyw43_arch.h>
#include <lwip/udp.h>
#include <time.h>
#define CLIENT
//#define SERVER
#define STA_MODE
//#define AP_MODE
#ifdef STA_MODE
#define SSID "thinkpad-T440p"
#define PASSWORD "CDuKaka2000!"
#endif // STA_MODE
#ifdef AP_MODE
#define AP_SSID "PicoAP"
#define AP_PASSWORD "PicoPassword!"
#define AP_CHANNEL 3
#endif // AP_MODE
#ifdef CLIENT
#define CLIENT_PORT 4243
static void udp_recv_callback(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port)
{
puts("Callback");
if(p->len == 1)
{
printf("a:%d\n", ((uint8_t *)p->payload)[0]);
}
pbuf_free(p);
}
#endif // CLIENT
int main()
{
stdio_init_all();
sleep_ms(2000);
puts("Pi Starting...");
if(cyw43_arch_init_with_country(CYW43_COUNTRY_FRANCE))
{
puts("CYW43 arch init failed");
return -1;
}
if(cyw43_wifi_pm(&cyw43_state, CYW43_NO_POWERSAVE_MODE))
{
puts("CYW43 no powersave mode failed");
return -1;
}
puts("CYW43 arch initialized");
#ifdef STA_MODE
cyw43_arch_enable_sta_mode();
for(int error_code = 1; error_code; )
{
printf("WiFi connection attempt to \"%s\"\n", SSID);
error_code = cyw43_arch_wifi_connect_timeout_ms(SSID, PASSWORD, CYW43_AUTH_WPA2_AES_PSK, 10000);
if(error_code)
{
const char *error_message;
switch(error_code)
{
case PICO_ERROR_TIMEOUT:
error_message = "Timeout reached";
break;
case PICO_ERROR_BADAUTH:
error_message = "Bad password";
break;
case PICO_ERROR_CONNECT_FAILED:
error_message = "Some reason";
break;
}
printf("Connection failed : %s\n", error_message);
}
}
puts("WiFi connected");
#endif // STA_MODE
#ifdef AP_MODE
cyw43_arch_enable_ap_mode(AP_SSID, AP_PASSWORD, CYW43_AUTH_WPA2_AES_PSK);
cyw43_wifi_ap_set_channel(&cyw43_state, AP_CHANNEL);
puts("AP mode enabled");
#endif //AP_MODE
#ifdef CLIENT
struct udp_pcb *pcb = udp_new();
if(!pcb)
{
puts("UDP pcb init failed");
return -1;
}
udp_recv(pcb, udp_recv_callback, NULL);
if(udp_bind(pcb, IP4_ADDR_ANY, CLIENT_PORT))
{
puts("UDP pcb bind failed");
return -1;
}
#endif // CLIENT
// ========================== Main loop ==========================
while(true)
{
cyw43_arch_poll();
#ifdef STA_MODE
int ret = cyw43_wifi_link_status(&cyw43_state, CYW43_ITF_STA);
if(ret != CYW43_LINK_JOIN)
{
const char *status_message;
switch(ret)
{
case CYW43_LINK_DOWN:
status_message = "WiFi down";
break;
case CYW43_LINK_JOIN:
status_message = "WiFi up";
break;
case CYW43_LINK_FAIL:
status_message = "WiFi connection failed";
break;
case CYW43_LINK_NONET:
status_message = "Network not found";
break;
case CYW43_LINK_BADAUTH:
status_message = "Bad auth";
break;
}
puts(status_message);
}
#endif // STA_MODE
tight_loop_contents();
}
}