uart: Add some flow control (RTS#) examples.

[sigrok-dumps.git] / uart / hello_world / README

diff --git a/uart/hello_world/README b/uart/hello_world/README
index 11d180b46857d3260802f455a55ecdd3e3946648..57365d63825e30abfdc19362d0c8c1da03312535 100644 (file)
--- a/uart/hello_world/README
+++ b/uart/hello_world/README
@@ -3,22 +3,28 @@ Hello World UART output using various options
 -------------------------------------------------------------------------------
 
 This is a collection of example UART communication (only in one direction).
-The repeatedly transmitted data is "Hello World!\r\n", using 8n1 settings.
+The repeatedly transmitted data is "Hello World!\r\n", using various settings,
+such as 8n1, 8o1, 8e1, 7o1, 7e1, etc.
+
+The hardware sending the data is an Olimex STM32-H103 eval kit with an
+ST STM32 (ARM Cortex-M3) microcontroller. The firmware used is based on a
+simple libopencm3 UART example. The USART1 (USART1.TX pin) is used.
+
+For details see:
+http://libopencm3.org
+http://libopencm3.git.sourceforge.net/git/gitweb.cgi?p=libopencm3/libopencm3;a=tree;f=examples/stm32/f1/stm32-h103/usart_printf
+http://olimex.com/dev/stm32-h103.html
 
 
 Logic analyzer setup
 --------------------
 
-The logic analyzer used for capturing is a ChronoVu LA8 at a sample rate
-of 5MHz (for baud rates 921600 - 230400), 1MHz (for 115200 - 19200),
-and 625kHz (for baud rates 9600 - 110).
-
-The ChronoVu LA8 probes were connected to the UART like this:
+The logic analyzer used was a ChronoVu LA8 at a sample rate of 5MHz (for baud
+rates 921600 - 230400), 1MHz (115200 - 19200), and 625kHz (9600 - 1200):
 
   Probe       UART
-  -------------------
+  ----------------
   0 (green)   TX
-  GND         GND
 
 
 Data