arm - Failed to read device signature (operation failed, reading signature) -


i having problem last 3 weeks , not able find solution it. let me explain problem in detail.

when try download program, following error failed read device signature ( operation failed .(reading signature)). accessing device using wrong protocol render device unusable. want continue?

controller: lpc2148 oscillator: 12mhz crystal serial connection through max3232 reset , program switch connection software used : flashmagic version9.73.4146 arm7 uart driver version: 5.00.3965

hope can point me in right direction


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