Merge pull request #295 from yaxu/patch-1

Make clear that you cannot transmit and receive data at the same time

Author: jhansson-ard

content/learn/07.built-in-libraries/04.software-serial/software-serial.md

@@ -19,6 +19,7 @@ To use this library:
 
 SoftwareSerial library has the following known limitations:
 
+* It cannot transmit and receive data at the same time.
 * If using multiple software serial ports, only one can receive data at a time.
 * Not all pins on the Mega and Mega 2560 boards support change interrupts, so only the following can be used for RX: 10, 11, 12, 13, 14, 15, 50, 51, 52, 53, A8 (62), A9 (63), A10 (64), A11 (65), A12 (66), A13 (67), A14 (68), A15 (69).
 Not all pins on the Leonardo and Micro boards support change interrupts, so only the following can be used for RX: 8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).
@@ -668,4 +669,4 @@ void loop() {
 * [read()](#read)
 * [print()](#print)
 * [println()](#println)
-* [listen()](#listen)
+* [listen()](#listen)