TMS320F28377D对寄存器写0来节省空间是什么意思？

只看该作者 · 2016-12-16 10:19

本帖最后由 holddreamair 于 2016-12-16 13:28 编辑

在TI的DSP例程中有下面一段内容：
      //Fill all registers with zeros. Writing to each register separately
      //for six GPIO modules would make this function *very* long. Fortunately,
      //we'd be writing them all with zeros anyway, so this saves a lot of space.

            gpioBaseAddr = (Uint32 *)&GpioCtrlRegs;
            for (regOffset = 0; regOffset < sizeof(GpioCtrlRegs)/2; regOffset++)
            {
                     gpioBaseAddr[regOffset] = 0x00000000;
            }

            gpioBaseAddr = (Uint32 *)&GpioDataRegs;
            for (regOffset = 0; regOffset < sizeof(GpioDataRegs)/2; regOffset++)
            {
                     gpioBaseAddr[regOffset] = 0x00000000;
            }
请问寄存器写0来节省空间是什么意思？