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58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
// comment inline
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/*This is a multipleline comments
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Line 2
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Line 3*/
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/*Gerardo Marx
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30th June 2026
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GPIOs management with dual CPUs
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----------------
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CPU1: GPIO22 and GPIO97 using bitfield approach
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CPU2: GPIO52 using driverlib approach
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|-----------|
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|GPIO22 |
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| ---- |
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|GPIO97 |
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| |
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|GPIO52 |
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|-----------|
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*/
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// Libraries and includes
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#include "F28x_Project.h"
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#include "driverlib.h" //???
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#include "device.h"
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// Variables and definitions
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// main
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void main(void){
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// 1: Init system
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InitSysCtrl();
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// 2: Configure GPIOs
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EALLOW; //enable GPIO config
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// 2.1 GPIO22
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GpioCtrlRegs.GPAGMUX2.bit.GPIO22 = 0; //pin as gpio
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GpioCtrlRegs.GPADIR.bit.GPIO22 = 1; // configure as output
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GpioCtrlRegs.GPACSEL3.bit.GPIO22 = 0; // cpu1
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// 2.2 GPIO97
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GpioCtrlRegs.GPDGMUX1.bit.GPIO97 = 0; //pin as gpio
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GpioCtrlRegs.GPDDIR.bit.GPIO97 = 1; // configure as output
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GpioCtrlRegs.GPDCSEL1.bit.GPIO97 = 0; //cpu1
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// 2.3 GPIO52
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GpioCtrlRegs.GPBGMUX2.bit.GPIO52 = 0; //pin as gpio
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GpioCtrlRegs.GPBDIR.bit.GPIO52 = 1; // configure as output
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GpioCtrlRegs.GPBCSEL3.bit.GPIO52 = 2; //cpu2
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// 3: Change state of the GPIOs
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GpioDataRegs.GPASET.bit.GPIO22 = 1; // set logical 1
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GpioDataRegs.GPDSET.bit.GPIO97 = 1; // set logical 1
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// 4: Enter into the infinite loop
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}
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