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Original question:

New to DSP

TMS320C6742: Configure GPIO using registers

Stan woldes
Prodigy 180 points

Part Number: TMS320C6742

Hi i m learning to configure GPIO using registers, and come across the following code, can anyone kindly help to advise the following? what does the whole sentence do? what does the (volatile....) means, what does GPIO_OUT_DATA(0) does and what does  + SOC_GPIO_0_REGS means? 

 

#define GPIOSR_ADDR      (*(volatile unsigned int *)(GPIO_OUT_DATA(0) + SOC_GPIO_0_REGS))