Improve the example in README, fix OpenCyphal#159

pavel-kirienko · pavel-kirienko · commit 1c91c49d26e3 · 2020-12-29T09:08:47.000+02:00
diff --git a/README.md b/README.md
@@ -120,7 +120,7 @@ prioritized transmission queue into the CAN driver (or several, if redundant int
 ```c
 for (const CanardFrame* txf = NULL; (txf = canardTxPeek(&ins)) != NULL;)  // Look at the top of the TX queue.
 {
-    if (txf->timestamp_usec > getCurrentMicroseconds())  // Ensure TX deadline not expired.
+    if ((0U == txf->timestamp_usec) || (txf->timestamp_usec > getCurrentMicroseconds()))  // Check the deadline.
     {
         if (!pleaseTransmit(txf))              // Send the frame. Redundant interfaces may be used here.
         {

Original file line number	Diff line number	Diff line change
`@@ -120,7 +120,7 @@ prioritized transmission queue into the CAN driver (or several, if redundant int`
`120`	`120`	```c
`121`	`121`	`for (const CanardFrame* txf = NULL; (txf = canardTxPeek(&ins)) != NULL;) // Look at the top of the TX queue.`
`122`	`122`	`{`
`123`		`- if (txf->timestamp_usec > getCurrentMicroseconds()) // Ensure TX deadline not expired.`
	`123`	`+ if ((0U == txf->timestamp_usec) \|\| (txf->timestamp_usec > getCurrentMicroseconds())) // Check the deadline.`
`124`	`124`	`{`
`125`	`125`	`if (!pleaseTransmit(txf)) // Send the frame. Redundant interfaces may be used here.`
`126`	`126`	`{`