commit 4b3f1d712b845a44a0d2680197cfb6c3fe4478bd
author Paul Sokolovsky <pfalcon@users.sourceforge.net> Mon Sep 19 00:23:38 2016 +0300
committer Paul Sokolovsky <pfalcon@users.sourceforge.net> Mon Sep 19 00:23:38 2016 +0300
tree abd77c22dc32fe8ea5b7f8bdb14417882b2f7b6f
parent 3fe047f08f12ac922e5486284a2f2254670cd9a9

esp8266/esp_mphal: Add tentative change to mp_hal_stdin_rx_chr() to wait IRQ.

Instead of busy-looping waiting for UART input. Not enabled by default,
needs more testing.

esp8266/esp_mphal.c

diff --git a/esp8266/esp_mphal.c b/esp8266/esp_mphal.c
index dc6944f..7c9590a 100644
--- a/esp8266/esp_mphal.c
+++ b/esp8266/esp_mphal.c
@@ -60,7 +60,14 @@
         if (c != -1) {
             return c;
         }
+        #if 0
+        // Idles CPU but need more testing before enabling
+        if (!ets_loop_iter()) {
+            asm("waiti 0");
+        }
+        #else
         mp_hal_delay_us(1);
+        #endif
     }
 }