Update i2c_master.xc

Added proposed fix from xmos#89
jdslabs · Aug 27, 2024 · e2e75e1 · e2e75e1
1 parent 82e82f2
commit e2e75e1
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/lib_i2c/src/i2c_master.xc b/lib_i2c/src/i2c_master.xc
@@ -175,10 +175,13 @@ static int tx8(
   static const unsigned kbits_per_second,
   unsigned &fall_time)
 {
-  // Data is transmitted MSB first
+  // Data is transmitted MSB first; Added proposed fix from https://github.com/xmos/lib_i2c/issues/89
   data = bitrev(data) >> 24;
   for (int i = 8; i != 0; i--) {
-    p_sda <: data & 0x1;
+    if (data & 1)
+      p_sda :> void;
+    else
+      p_sda <: 0;
     data >>= 1;
     high_pulse(p_scl, kbits_per_second, fall_time);
   }