From b7889ed69430e42a42b1c3d58a6745f700755370 Mon Sep 17 00:00:00 2001
From: Lady Ada <limor@ladyada.net>
Date: Fri, 6 Dec 2019 21:20:19 -0500
Subject: [PATCH] fix i2c scan

---
 src/adafruit_blinka/microcontroller/mcp2221/mcp2221.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/adafruit_blinka/microcontroller/mcp2221/mcp2221.py b/src/adafruit_blinka/microcontroller/mcp2221/mcp2221.py
index bd44474..aae81e5 100644
--- a/src/adafruit_blinka/microcontroller/mcp2221/mcp2221.py
+++ b/src/adafruit_blinka/microcontroller/mcp2221/mcp2221.py
@@ -279,12 +279,12 @@ class MCP2221:
         found = []
         for addr in range(start, end+1):
             # try a write
-            self.i2c_writeto(addr, b'\x00')
+            try:
+                self.i2c_writeto(addr, b'\x00')
+            except RuntimeError: # no reply!
+                continue
             # store if success
-            if self._i2c_status() == 0x00:
-                found.append(addr)
-            # cancel and continue
-            self._i2c_cancel()
+            found.append(addr)
         return found
 
     #----------------------------------------------------------------
-- 
2.49.0