[En-Nut-Discussion] ARM Semihosting console

[Uwe Bonnes]

Hello,

I have added a console using ARM semihosting. Tested with
L1Discovery/Stlink-V2 debugger and F4Discovery/BMP Debugger.

By using
#ifndef DEV_UART
#include <dev/semihosting.h>
#define DEV_UART devSemihosting
#endif
#ifndef DEV_UART_NAME
#define DEV_UART_NAME  devSemihosting.dev_name

in your board file, console IO is redirected to the debugger. The programm
will _not_ run with the debugger detached. It is usefull for board/device
bring up as no real uart is needed with semihosting.

Can people test with other CM3 devices? It should work on all
ARMv6-M/ARMv7-M, so maybe on AT91SAM7 too.

Bye

-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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