From 2d8b1d70b43af7a72533176ccaec7b96510c07d0 Mon Sep 17 00:00:00 2001 From: utzig Date: Mon, 21 Jul 2014 13:11:35 +0000 Subject: [AVR] Add ICU test (RT-only) git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7052 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- testhal/AVR/ICU/readme.txt | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 testhal/AVR/ICU/readme.txt (limited to 'testhal/AVR/ICU/readme.txt') diff --git a/testhal/AVR/ICU/readme.txt b/testhal/AVR/ICU/readme.txt new file mode 100644 index 000000000..c9b431083 --- /dev/null +++ b/testhal/AVR/ICU/readme.txt @@ -0,0 +1,25 @@ +***************************************************************************** +** ChibiOS/RT port for Atmel AVR ATmega1280. ** +***************************************************************************** + +** TARGET ** + +The demo runs on an Arduino Mega board. + +** The Demo ** + +This demo uses ICP3 (ICU3 input) which is located on pin PE7 to measure signal +width and period. The signal is output on pin PD4 using standard PAL calls and +thread sleep functions. PD4 must be wired to PE7. It outputs three different +waveforms with aproximately 1s duration using 50%, 25% and 75% respective duty +cycles. After that it just turns on ICU3 and waits for it to overflow. The values +read on each of these operations is output to SERIAL1. + +** Build Procedure ** + +The demo was built using the GCC AVR toolchain. It should build with WinAVR too! + +** Notes ** + +This demo runs natively so the Arduino bootloader must be removed and the FUSEs +reprogrammed. The values used for fuses are LFUSE=0xe7 and HFUSE=0x99. -- cgit v1.2.3