|
From: | Aleksandar Markovic |
Subject: | Re: [PATCH rc4 19/29] target/avr: Add section about AVR into QEMU documentation |
Date: | Sat, 1 Feb 2020 14:19:36 +0100 |
From: Michael Rolnik <address@hidden>
Explains basic ways of using AVR target in QEMU.
Signed-off-by: Michael Rolnik <address@hidden>
Message-Id: <20200118191416.19934-16-address@hidden >
Signed-off-by: Richard Henderson <address@hidden>
[PMD: Fixed typos]
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
---
qemu-doc.texi | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 2328e7e..aaf4e54 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1723,6 +1723,7 @@ differences are mentioned in the following sections.
* Microblaze System emulator::
* SH4 System emulator::
* Xtensa System emulator::
+* AVR System emulator::
@end menu
@node PowerPC System emulator
@@ -2496,6 +2497,56 @@ so should only be used with trusted guest OS.
@c man end
+@node AVR System emulator
+@section AVR System emulator
+@cindex system emulation (AVR)
+
+Use the executable @file{qemu-system-avr} to emulates a AVR 8 bit based machine
+having one for the following cores: avr1, avr2, avr25, avr3, avr31, avr35, avr4,
+avr5, avr51, avr6, avrtiny, xmega2, xmega3, xmega4, xmega5, xmega6 and xmega7.
+
+As for now it supports few Arduino boards for educational and testing purposes.
+These boards use a ATmega controller, which model is limited to USART & 16 bit
+timer devices, enought to run FreeRTOS based applications (like this @url{https://github.com/seharris/qemu-avr-tests/blob/ }master/free-rtos/Demo/AVR_ ATMega2560_GCC/demo.elf,,demo )
+
+Following are examples of possible usages, assuming demo.elf is compiled for
+AVR cpu
+@itemize
+
+@item Continuous non interrupted execution
+@example
+qemu-system-avr -machine mega2560 -bios demo.elf
+@end example
+
+@item Continuous non interrupted execution with serial output into telnet window
+@example
+qemu-system-avr -machine mega2560 -bios demo.elf -serial tcp::5678,server,nowait -nographic
+@end example
+and then in another shell
+@example
+telnet localhost 5678
+@end example
+
+@item Debugging wit GDB debugger
+@example
+qemu-system-avr -machine mega2560 -bios demo.elf -s -S
+@end example
+and then in another shell
+@example
+avr-gdb demo.elf
+@end example
+and then within GDB shell
+@example
+target remote :1234
+@end example
+
+@item Print out executed instructions
+@example
+qemu-system-avr -machine mega2560 -bios demo.elf -d in_asm
+@end example
+
+@end itemize
+
@node QEMU User space emulator
@chapter QEMU User space emulator
--
2.7.4
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