DSP GPIO input and output settings

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DSP GPIO input and output settings [Copy link]

DSP 28335 GPIO input settings:

When setting the GPIO input, in addition to setting this GPIO as input, you also need to pull the level of this GPIO port high

//RXD3
GpioCtrlRegs.GPBMUX2.bit.GPIO62 = 0; // 0 is set as IO port, 1 is set as peripheral
GpioCtrlRegs.GPBDIR.bit.GPIO62 = 0; // 0 is set as input, 1 is set as output
GpioCtrlRegs.GPBPUD.bit.GPIO62 = 0; // enalble pull up, when the pin is suspended, the signal may be high or low, and it will be given a high level after pulling it up.

GPIO output settings,

//TXD3
GpioCtrlRegs.GPBMUX2.bit.GPIO63 = 0; // 0 is set to IO function
GpioCtrlRegs.GPBDIR.bit.GPIO63=1; // 1 is set to output Output