You got hired as the rooky embedded system design engineer by the ABC Innovation

Question

You got hired as the rooky embedded system design engineer by the ABC Innovations, Inc. Respond to the following simple queries to show some understanding of C programming on CodeWarrior and system development using Dragon 12-Plus trainer board with HCS12 microcontroller. Show how to load proper values to the two registers associated with PORT J to enable LEDs without affecting any other operations of the port. Show how to load proper values to the two PORT P registers to disable the 7-segments marked DSP1 (leftmost) and DSP3 on your board without affecting any other operations of the marked port.

Explanation / Answer

Answer 1

Led Enable ();

DDRJ = 0XFF

Answer 2

In the first part, it is necessary to send all 1's in Hex it is FF to enable it

now to disable it send 0's on port P to disable it.

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