initial commit

lib/amb1_sdk/common/example/sntp_showtime/example_sntp_showtime.c

@@ -0,0 +1,60 @@
+#include "FreeRTOS.h"
+#include "task.h"
+#include <platform/platform_stdlib.h>
+#include <sntp/sntp.h>
+
+#define TIME_MODE    1	//0: for UTC with microseconds, 1: for timezone with seconds
+
+static void show_time(void)
+{
+#if (TIME_MODE == 0)
+	unsigned int update_tick = 0;
+	long update_sec = 0, update_usec = 0;
+
+	sntp_get_lasttime(&update_sec, &update_usec, &update_tick);
+
+	if(update_tick) {
+		long tick_diff_sec, tick_diff_ms, current_sec, current_usec;
+		unsigned int current_tick = xTaskGetTickCount();
+
+		tick_diff_sec = (current_tick - update_tick) / configTICK_RATE_HZ;
+		tick_diff_ms = (current_tick - update_tick) % configTICK_RATE_HZ / portTICK_RATE_MS;
+		update_sec += tick_diff_sec;
+		update_usec += (tick_diff_ms * 1000);
+		current_sec = update_sec + update_usec / 1000000;
+		current_usec = update_usec % 1000000;
+		printf("%s + %d usec\n", ctime(&current_sec), current_usec);
+	}
+#elif (TIME_MODE == 1)
+	int timezone = 8;	// use UTC+8 timezone for example
+	struct tm tm_now = sntp_gen_system_time(timezone);
+	printf("%d-%d-%d %d:%d:%d UTC%s%d\n",
+		tm_now.tm_year, tm_now.tm_mon, tm_now.tm_mday, tm_now.tm_hour, tm_now.tm_min, tm_now.tm_sec,
+		(timezone > 0) ? "+" : "", timezone);
+#endif
+}
+
+static void example_sntp_showtime_thread(void *param)
+{
+	int should_stop = 0;
+	// Delay to wait for IP by DHCP
+	vTaskDelay(10000);
+	printf("\nExample: SNTP show time\n");
+
+	sntp_init();
+
+	while(1) {
+		show_time();
+		vTaskDelay(1000);
+		if(should_stop)
+			break;
+	}
+
+	vTaskDelete(NULL);
+}
+
+void example_sntp_showtime(void)
+{
+	if(xTaskCreate(example_sntp_showtime_thread, ((const char*)"example_sntp_showtime_thread"), 1024, NULL, tskIDLE_PRIORITY + 1, NULL) != pdPASS)
+		printf("\n\r%s xTaskCreate failed\n", __FUNCTION__);
+}

lib/amb1_sdk/common/example/sntp_showtime/example_sntp_showtime.h

@@ -0,0 +1,6 @@
+#ifndef EXAMPLE_SNTP_SHOWTIME_H
+#define EXAMPLE_SNTP_SHOWTIME_H
+
+void example_sntp_showtime(void);
+
+#endif /* EXAMPLE_SNTP_SHOWTIME_H */

lib/amb1_sdk/common/example/sntp_showtime/readme.txt

@@ -0,0 +1,14 @@
+LWIP SNTP SHOWTIME EXAMPLE
+
+Description:
+Show system time maintained by time from NTP server and system tick.
+
+Configuration:
+Can Modify SNTP_SERVER_ADDRESS and SNTP_UPDATE_DELAY in sntp.c for NTP time update
+
+[platform_opts.h]
+	#define CONFIG_EXAMPLE_SNTP_SHOWTIME    1
+
+Execution:
+Can make automatical Wi-Fi connection when booting by using wlan fast connect example.
+A lwip ntp showtime example thread will be started automatically when booting.