# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1610407375 -3600
# Node ID d58099373644bbf2a9b00fad9f01264eea9bd899
# Parent  790377745ecd89e076da1f4a345b9e27ed7333b0
Added a comment about I2C pre-start status condition testing.

diff -r 790377745ecd -r d58099373644 pkg/devices/lib/i2c/src/jz4730.cc
--- a/pkg/devices/lib/i2c/src/jz4730.cc	Sun Jan 10 22:21:57 2021 +0100
+++ b/pkg/devices/lib/i2c/src/jz4730.cc	Tue Jan 12 00:22:55 2021 +0100
@@ -138,6 +138,10 @@
 bool
 I2c_jz4730_channel::set_address(uint8_t address, bool read)
 {
+  // Waiting for long enough may eliminate a busy condition and thus permit a
+  // new transaction. 10ms appears to be long enough, whereas 1ms does not
+  // appear to be. In case this is insufficient, permit failure.
+
   unsigned int limit = 10;
 
   do