DHCPがサーバーからの応答の処理部分で上手く動かないので他のUDPアプリを試してみます。
contrib-1.4.1/apps/sntpを試します。
sntpサーバアドレスを変更して（lwipopts.hに追加)
/* SNTP */ #define SNTP_SERVER_DNS LWIP_DNS #if SNTP_SERVER_DNS #define SNTP_SERVER_ADDRESS "ntp.jst.mfeed.ad.jp" #else #define SNTP_SERVER_ADDRESS "210.173.160.57" #endif #define SNTP_DEBUG LWIP_DBG_ON
で動かしてみます。
LPC2388 lwIP:72000000Hz PHYInit:0 PHYInit:1 PHYInit:2 PHYInit:3 PHYInit:4 PHYInit:5 6 sntp_send_request: Sending request to server udp_send udp_send: not yet bound to a port, binding now udp_bind(ipaddr = 0.0.0.0, port = 0) udp_bind: bound to 0.0.0.0, port 49153 udp_send: added header in given pbuf 0x40000a70 udp_send: sending datagram of length 56 udp_send: UDP packet length 56 udp_send: UDP checksum 0x0ddd udp_send: ip_output_if (,,,,IP_PROTO_UDP,) udp_input: received datagram of length 56 UDP header: +-------------------------------+ | 123 | 49153 | (src port, dest port) +-------------------------------+ | 56 | 0x28fe | (len, chksum) +-------------------------------+ udp (192.168.11.100, 49153) <-- (210.173.160.57, 123) pcb (0.0.0.0, 49153) --- (0.0.0.0, 0) udp_input: calculating checksum sntp_process: Thu Dec 29 02:17:01 2016 sntp_recv: Scheduled next time request: 3600000 ms
問題なく時刻を取得できました。
UDPの受信が駄目なわけでなくDHCPの受信側に問題が有るようです。
DNSも動きました。サーバのアドレス指定は以下で設定しました。
IP4_ADDR(&xDns, 8, 8, 8, 8);
dns_setserver(0, &xDns);
LPC2388 lwIP:72000000Hz dns_init: initializing udp_bind(ipaddr = 0.0.0.0, port = 0) udp_bind: bound to 0.0.0.0, port 49153 PHYInit:0 PHYInit:1 PHYInit:2 PHYInit:3 PHYInit:4 dns_tmr: dns_check_entries dns_tmr: dns_check_entries PHYInit:5 6 IP:192.168.11.100 dns_enqueue: "ntp.jst.mfeed.ad.jp": use DNS entry 0 dns_send: dns_servers[0] "ntp.jst.mfeed.ad.jp": request udp_connect: connected to 0.0.0.0,port 49153 udp_send udp_send: added header in given pbuf 0x400010e8 udp_send: sending datagram of length 45 udp_send: UDP packet length 45 udp_send: UDP checksum 0x6630 udp_send: ip_output_if (,,,,IP_PROTO_UDP,) sntp_request: Waiting for server address to be resolved. udp_input: received datagram of length 93 UDP header: +-------------------------------+ | 53 | 49153 | (src port, dest port) +-------------------------------+ | 93 | 0x6239 | (len, chksum) +-------------------------------+ udp (192.168.11.100, 49153) <-- (208.67.222.222, 53) pcb (0.0.0.0, 49153) --- (208.67.222.222, 53) udp_input: calculating checksum dns_recv: "ntp.jst.mfeed.ad.jp": response = 210.173.160.27 sntp_dns_found: Server address resolved, sending request sntp_send_request: Sending request to server udp_send udp_send: not yet bound to a port, binding now udp_bind(ipaddr = 0.0.0.0, port = 0) udp_bind: bound to 0.0.0.0, port 49154 udp_send: added header in given pbuf 0x400010e8 udp_send: sending datagram of length 56 udp_send: UDP packet length 56 udp_send: UDP checksum 0x2add udp_send: ip_output_if (,,,,IP_PROTO_UDP,) udp_input: received datagram of length 56 UDP header: +-------------------------------+ | 123 | 49154 | (src port, dest port) +-------------------------------+ | 56 | 0xe57f | (len, chksum) +-------------------------------+ udp (192.168.11.100, 49154) <-- (210.173.160.27, 123) pcb (0.0.0.0, 49154) --- (0.0.0.0, 0) pcb (0.0.0.0, 49153) --- (208.67.222.222, 53) udp_input: calculating checksum sntp_process: Thu Dec 29 05:04:22 2016 sntp_recv: Scheduled next time request: 3600000 ms
追記
DHCPも動くようになりました。
SNTPは、デバッグ出力だけでは使えないので以下の修正をしました。
lwipopts.h
#include <time.h>
#define SNTP_DEBUG LWIP_DBG_OFF
void sntp_set_system_time_func(time_t sec);
#define SNTP_SET_SYSTEM_TIME(sec) sntp_set_system_time_func(sec)
main.c
void sntp_set_system_time_func(time_t sec)
{
sntp_stop();
printf("sntp_set_system_time:%s\n",ctime(&sec));
}
sntp_set_system_time_funcからRTCを設定するようにしたいと思います。
LPC23xx_24xxSampleSoftware.r6\RTCのrtc.[ch]を使って設定するようにしました。
void sntp_set_system_time_func(time_t sec)
{
struct tm *time_inf;
struct tm ctm;
time_t csec;
RTCTime local_time, current_time;
sntp_stop();
sec += 9*3600; //GMT->JST
printf("sntp_set_system_time:%s",ctime(&sec));
/* Initialize RTC module */
RTCInit();
/* set local time */
time_inf = gmtime(&sec);
local_time.RTC_Sec = time_inf->tm_sec;
local_time.RTC_Min = time_inf->tm_min;
local_time.RTC_Hour = time_inf->tm_hour;
local_time.RTC_Mday = time_inf->tm_mday;
local_time.RTC_Wday = time_inf->tm_wday;
local_time.RTC_Yday = time_inf->tm_yday;
local_time.RTC_Mon = time_inf->tm_mon;
local_time.RTC_Year = time_inf->tm_year + 1900;
RTCSetTime(local_time); /* Set local time */
/* install RTC timer handler mainly for alarm control */
if (install_irq(RTC_INT, (void *) RTCHandler, HIGHEST_PRIORITY) == FALSE) {
printf("install_irq error\n"); /* very bad happened */
}
/* mask off alarm mask, turn on IMYEAR in the counter increment interrupt register */
RTCSetAlarmMask(AMRSEC | AMRMIN | AMRHOUR | AMRDOM | AMRDOW | AMRDOY | AMRMON | AMRYEAR);
RTC_CIIR = IMMIN | IMYEAR;
RTCStart();
#if 1 // check
vTaskDelay(1000*3);
current_time = RTCGetTime();
ctm.tm_sec = current_time.RTC_Sec;
ctm.tm_min = current_time.RTC_Min;
ctm.tm_hour = current_time.RTC_Hour;
ctm.tm_mday = current_time.RTC_Mday;
ctm.tm_wday = current_time.RTC_Wday;
ctm.tm_yday = current_time.RTC_Yday;
ctm.tm_mon = current_time.RTC_Mon;
ctm.tm_year = current_time.RTC_Year - 1900;
csec = mktime(&ctm);
printf("RTCGetTime:%s",ctime(&csec));
#endif
}
