From e069bdfd480cb1927e05d3155721b81f919d294f Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Sun, 2 Jul 2023 14:54:42 +0200
Subject: Slow down wifi associations, use LEDs less

First, trying to re-connect to wifi every 10 seconds is way too fast.

Second, if there's an error, keep quiet about it unless the button is
pushed.  The RTC will probably not drift too far...!
---
 morningtown.c | 27 ++++++++++-----------------
 1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/morningtown.c b/morningtown.c
index 5fd6d3f..c175e38 100644
--- a/morningtown.c
+++ b/morningtown.c
@@ -58,6 +58,7 @@ int main()
 	int last_conn;
 	int pre_wake = 0;
 	int wake_now = 0;
+	int initial_sync;
 
 	gpio_init(LED_GREEN);
 	gpio_init(LED_RED);
@@ -84,14 +85,15 @@ int main()
 	rtc_init();
 
 	ntp_state = ntp_init();
-	last_conn = 200;
+	last_conn = 20000;
+	initial_sync = 0;
 	while (1) {
 
 		watchdog_update();
 
 		int st = cyw43_wifi_link_status(&cyw43_state, CYW43_ITF_STA);
 
-		if ( (st != CYW43_LINK_JOIN) && (last_conn > 100) ) {
+		if ( (st != CYW43_LINK_JOIN) && (last_conn > 10000) ) {
 			cyw43_arch_wifi_connect_async(WIFI_SSID,
 			                              WIFI_PASSWORD,
 			                              CYW43_AUTH_WPA2_AES_PSK);
@@ -99,9 +101,8 @@ int main()
 			last_conn = 0;
 		}
 
-		if ( ntp_ok(ntp_state) ) {
-			check_clock(&pre_wake, &wake_now);
-		}
+		if ( ntp_ok(ntp_state) ) initial_sync = 1;
+		if ( initial_sync ) check_clock(&pre_wake, &wake_now);
 
 		/* Determine the LED status */
 		if ( gpio_get(TEST_BUTTON) == 0 ) {
@@ -111,18 +112,10 @@ int main()
 			cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN,
 			                    (st == CYW43_LINK_JOIN));
 		} else {
-			if ( !ntp_ok(ntp_state) ) {
-				/* Booting up */
-				cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN,
-				                    (st == CYW43_LINK_JOIN));
-				gpio_put(LED_RED, 1);
-				gpio_put(LED_GREEN, 0);
-			} else {
-				/* Normal operation */
-				gpio_put(LED_GREEN, pre_wake || wake_now);
-				gpio_put(LED_RED, wake_now);
-				cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
-			}
+			/* Normal operation */
+			gpio_put(LED_GREEN, pre_wake || wake_now);
+			gpio_put(LED_RED, wake_now);
+			cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
 		}
 
 		last_conn += 1;
-- 
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