From 2eb47bea14a5c98eddcedbc4ff38583d9bfbb1d3 Mon Sep 17 00:00:00 2001 From: Dean Date: Mon, 16 Jul 2012 17:11:14 +0000 Subject: Tag for the LUFA-120730-BETA release. git-svn-id: http://lufa-lib.googlecode.com/svn/tags/LUFA-120730-BETA@2407 d5102386-fcda-11dd-9fdb-3debd5008f28 --- LUFA/Common/ArchitectureSpecific.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'LUFA/Common/ArchitectureSpecific.h') diff --git a/LUFA/Common/ArchitectureSpecific.h b/LUFA/Common/ArchitectureSpecific.h index f7dca663..9b719a22 100644 --- a/LUFA/Common/ArchitectureSpecific.h +++ b/LUFA/Common/ArchitectureSpecific.h @@ -65,6 +65,24 @@ /* Macros: */ #if (ARCH == ARCH_AVR8) || (ARCH == ARCH_XMEGA) || defined(__DOXYGEN__) #if (ARCH == ARCH_AVR8) || defined(__DOXYGEN__) + /** Re-enables the AVR's JTAG bus in software, until a system reset. This will re-enable JTAG debugging + * interface after is has been disabled in software via \ref JTAG_DISABLE(). + * + * \note This macro is not available for all architectures. + */ + #define JTAG_ENABLE() MACROS{ \ + __asm__ __volatile__ ( \ + "in __tmp_reg__,__SREG__" "\n\t" \ + "cli" "\n\t" \ + "out %1, %0" "\n\t" \ + "out __SREG__, __tmp_reg__" "\n\t" \ + "out %1, %0" "\n\t" \ + : \ + : "r" (MCUCR & ~(1 << JTD)), \ + "M" (_SFR_IO_ADDR(MCUCR)) \ + : "r0"); \ + }MACROE + /** Disables the AVR's JTAG bus in software, until a system reset. This will override the current JTAG * status as set by the JTAGEN fuse, disabling JTAG debugging and reverting the JTAG pins back to GPIO * mode. @@ -79,7 +97,7 @@ "out __SREG__, __tmp_reg__" "\n\t" \ "out %1, %0" "\n\t" \ : \ - : "r" (1 << JTD), \ + : "r" (MCUCR | (1 << JTD)), \ "M" (_SFR_IO_ADDR(MCUCR)) \ : "r0"); \ }MACROE -- cgit v1.2.3