From bad7a28bfda2f12014a0bcf9e607324697b5c6d4 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@warmcat.com>
Date: Thu, 24 Feb 2022 08:08:48 +0000
Subject: [PATCH] esp32: heltec: change delay

Newer esp-idf has lost ets-delay-us
---
 .../embedded/esp32/esp-heltec-wb32/main/devices.c            | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/minimal-examples/embedded/esp32/esp-heltec-wb32/main/devices.c b/minimal-examples/embedded/esp32/esp-heltec-wb32/main/devices.c
index a4dab2a04..da7cbe9c6 100644
--- a/minimal-examples/embedded/esp32/esp-heltec-wb32/main/devices.c
+++ b/minimal-examples/embedded/esp32/esp-heltec-wb32/main/devices.c
@@ -31,7 +31,10 @@ lws_netdev_instance_wifi_t *wnd;
 static void
 esp32_i2c_delay(void)
 {
-	ets_delay_us(1);
+	volatile int n = 0;
+
+	while (n < 20)
+		n++;
 }
 
 static const lws_bb_i2c_t li2c = {