first 'app': added SNTP client from contrib (unmodified from 196cbae376dfd484b4833503dd43057b4c3462fa, 28.08.2015)

src/include/lwip/apps/sntp.h

@@ -0,0 +1,58 @@
+#ifndef LWIP_SNTP_H
+#define LWIP_SNTP_H
+
+#include "lwip/opt.h"
+#include "lwip/ip_addr.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** The maximum number of SNTP servers that can be set */
+#ifndef SNTP_MAX_SERVERS
+#define SNTP_MAX_SERVERS           LWIP_DHCP_MAX_NTP_SERVERS
+#endif
+
+/** Set this to 1 to implement the callback function called by dhcp when
+ * NTP servers are received. */
+#ifndef SNTP_GET_SERVERS_FROM_DHCP
+#define SNTP_GET_SERVERS_FROM_DHCP LWIP_DHCP_GET_NTP_SRV
+#endif
+
+/* Set this to 1 to support DNS names (or IP address strings) to set sntp servers */
+#ifndef SNTP_SERVER_DNS
+#define SNTP_SERVER_DNS            0
+#endif
+
+/** One server address/name can be defined as default if SNTP_SERVER_DNS == 1:
+ * #define SNTP_SERVER_ADDRESS "pool.ntp.org"
+ */
+
+/* SNTP operating modes: default is to poll using unicast.
+   The mode has to be set before calling sntp_init(). */
+#define SNTP_OPMODE_POLL            0
+#define SNTP_OPMODE_LISTENONLY      1
+void sntp_setoperatingmode(u8_t operating_mode);
+
+void sntp_init(void);
+void sntp_stop(void);
+
+void sntp_setserver(u8_t idx, const ip_addr_t *addr);
+ip_addr_t sntp_getserver(u8_t idx);
+
+#if SNTP_SERVER_DNS
+void sntp_setservername(u8_t idx, char *server);
+char *sntp_getservername(u8_t idx);
+#endif /* SNTP_SERVER_DNS */
+
+#if SNTP_GET_SERVERS_FROM_DHCP
+void sntp_servermode_dhcp(int set_servers_from_dhcp);
+#else /* SNTP_GET_SERVERS_FROM_DHCP */
+#define sntp_servermode_dhcp(x)
+#endif /* SNTP_GET_SERVERS_FROM_DHCP */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_SNTP_H */