From 1c5b27f41d4796204008138f580adf1d288bf335 Mon Sep 17 00:00:00 2001
From: Guy McSwain <guy.mcswain@gmail.com>
Date: Thu, 25 Jun 2020 22:26:41 -0500
Subject: [PATCH] Fix issue #356, document wave_tx_at API is not supported on
 chained waves.

---
 pigpio.h      | 2 +-
 pigpio.py     | 2 +-
 pigpiod_if2.h | 2 +-
 pigs.1        | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/pigpio.h b/pigpio.h
index 7aa6f78..c318515 100644
--- a/pigpio.h
+++ b/pigpio.h
@@ -2181,7 +2181,7 @@ D*/
 int gpioWaveTxAt(void);
 /*D
 This function returns the id of the waveform currently being
-transmitted.
+transmitted using [*gpioWaveTxSend*].  Chained waves are not supported.
 
 Returns the waveform id or one of the following special values:
 
diff --git a/pigpio.py b/pigpio.py
index 2d418b1..7fc80a5 100644
--- a/pigpio.py
+++ b/pigpio.py
@@ -2466,7 +2466,7 @@ class pi():
    def wave_tx_at(self):
       """
       Returns the id of the waveform currently being
-      transmitted.
+      transmitted using [*wave_send**].  Chained waves are not supported.
 
       Returns the waveform id or one of the following special
       values:
diff --git a/pigpiod_if2.h b/pigpiod_if2.h
index 79d0223..9700cc0 100644
--- a/pigpiod_if2.h
+++ b/pigpiod_if2.h
@@ -1609,7 +1609,7 @@ D*/
 int wave_tx_at(int pi);
 /*D
 This function returns the id of the waveform currently being
-transmitted.
+transmitted by [*wave_send**].  Chained waves are not supported.
 
 . .
 pi: >=0 (as returned by [*pigpio_start*]).
diff --git a/pigs.1 b/pigs.1
index b315910..8fa4337 100644
--- a/pigs.1
+++ b/pigs.1
@@ -4823,7 +4823,7 @@ $ pigs wvas 7 38400 8 2 0 0x41 0x42
 
 .br
 This command returns the id of the waveform currently
-being transmitted.
+being transmitted.  Note: chained waves are not supported.
 
 .br
 Returns the waveform id or one of the following special