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-rw-r--r--uart/hello_world/README9
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diff --git a/uart/hello_world/README b/uart/hello_world/README
index 3fda4db..dd28a0f 100644
--- a/uart/hello_world/README
+++ b/uart/hello_world/README
@@ -5,6 +5,15 @@ 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 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
--------------------