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lpc1343 value error

Question asked by jay ch on Jul 2, 2018
Latest reply on Jul 3, 2018 by jay ch

i am starting to maintain an old IAR project 

there is a global variable, volatile dali_terminal_t terminal_arr[64] = {0};

 terminal_arr is about 768 bytes.


below figure is before the statement: terminal_arr[addr].group_low = backcmd;   // backcmd is 0x86



after run the statement, group_low value has lost.


im new to LPC , dont know how to debug it and so hope you could give a hand.