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how to solve Trap due to unimplemented FLASH memory access,

 
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dnatechnical



Joined: 26 Nov 2009
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how to solve Trap due to unimplemented FLASH memory access,
PostPosted: Tue Dec 08, 2009 9:09 am     Reply with quote

During simulation I find following message.
Anyone help me?
Quote:
Trap due to unimplemented FLASH memory access, occurred from instruction at 0x00370e
FvM



Joined: 27 Aug 2008
Posts: 2337
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PostPosted: Tue Dec 08, 2009 9:43 am     Reply with quote

These things happen.
If you expect a more specific answer, provide some information.
dnatechnical



Joined: 26 Nov 2009
Posts: 19

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PostPosted: Sat Jan 09, 2010 9:45 pm     Reply with quote

I'm using modbus, I'm using dspic30f6010a.
Code:

float m_decp[0];

(modbus_write_multiple_registers(MODBUS_ADDRESS,0x201,2,m_decl[0]));

For this I get error:
Quote:
CORE-E0002: Trap due to misaligned data word access, occurred from instruction at 0x003a4c

PIC get reset.

Anyone can help for this?
FvM



Joined: 27 Aug 2008
Posts: 2337
Location: Germany

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PostPosted: Sun Jan 10, 2010 3:44 am     Reply with quote

Looking at the prototype of modbus_write_multiple_registers, the problem reveals as a simple coding error
Code:
exception modbus_write_multiple_registers(int8 address, int16 start_address, int16 quantity, int16 *values);

The values argument must be supplied by reference: &m_decl[0].
PCD performs no type checking for pointers in function calls, so no type cast is required.
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