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From: bugzilla-daemon@bugs.ecos.sourceware.org
To: ecos-bugs@ecos.sourceware.org
Subject: [Bug 1001683] New: Cortex-M3: Startup Code does not initialize last of available interrupts vectors
Date: Wed, 10 Oct 2012 09:37:00 -0000	[thread overview]
Message-ID: <bug-1001683-13@http.bugs.ecos.sourceware.org/> (raw)

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           Summary: Cortex-M3: Startup Code does not initialize last of
                    available interrupts vectors
           Product: eCos
           Version: CVS
          Platform: Other (please specify)
        OS/Version: Cortex-M
            Status: UNCONFIRMED
          Severity: normal
          Priority: low
         Component: HAL
        AssignedTo: unassigned@bugs.ecos.sourceware.org
        ReportedBy: martin.hopfeld@sse-erfurt.de
                CC: ecos-bugs@ecos.sourceware.org
             Class: Advice Request


Created an attachment (id=1954)
 --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=1954)
Fix Cortex-M interrupt vector initialization

Using an STM32F103 I ran into a HardFault exception when using DMA2_CH5 with
interrupts enabled.

It seems no interrupt handler is registered by the startup code for this
particular interrupt source. The DMA2_CH5 interrupt is the last entry in the
interrupt list according to STM32F103 reference manual.

Please see attached patch to the startup code on Cortex-M architecture to use
the correct constant (CYGNUM_HAL_VSR_COUNT) when iterating over all interrupts
and installing hal_default_interrupt_vsr().

This patch works for me and allows DMA2_CH5 to signal transfer complete by
interrupt.

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             reply	other threads:[~2012-10-10  9:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-10  9:37 bugzilla-daemon [this message]
2012-10-10  9:37 bugzilla-daemon

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