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发表于 2015-07-02 15:09:42
#include <stdio.h>
#include "platform.h"
#include "xil_types.h"
#include "xgpio.h"
#include "xtmrctr.h"
#include "xparameters.h"
#include "xgpiops.h"
#include "xil_io.h"
#include "xil_exception.h"
#include "xscugic.h"
static XGpioPs psGpioInstancePtr;
extern XGpioPs_Config XGpioPs_ConfigTable[XPAR_XGPIOPS_NUM_INSTANCES];
static int iPinNumber = 7; /*Led LD9 is connected to MIO pin 7*/
XScuGic InterruptController; /* Instance of the Interrupt Controller */
static XScuGic_Config *GicConfig;/* The configuration parameters of the
controller */
static int InterruptFlag;
void print(char *str);
extern char inbyte(void);
void Timer_InterruptHandler(void *data, u8 TmrCtrNumber)
{
print("\r\n");
print("\r\n");
print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\n");
print(" Inside Timer ISR \n \r ");
XTmrCtr_Stop(data,TmrCtrNumber);
// PS GPIO Writing
print("LED 'LD9' Turned ON \r\n");
XGpioPs_WritePin(&psGpioInstancePtr,iPinNumber,1);
XTmrCtr_Reset(data,TmrCtrNumber);
print(" Timer ISR Exit\n \n \r");
print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\n");
print("\r\n");
print("\r\n");
InterruptFlag = 1;
}
int SetUpInterruptSystem(XScuGic *XScuGicInstancePtr)
{
/*
* Connect the interrupt controller interrupt handler to the hardware
* interrupt handling logic in the ARM processor.
*/
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler) XScuGic_InterruptHandler,
XScuGicInstancePtr);
/*
* Enable interrupts in the ARM
*/
Xil_ExceptionEnable();
return XST_SUCCESS;
}
int ScuGicInterrupt_Init(u16 DeviceId,XTmrCtr *TimerInstancePtr)
{
int Status;
/*
* Initialize the interrupt controller driver so that it is ready to
* use.
*/
GicConfig = XScuGic_LookupConfig(DeviceId);
if (NULL == GicConfig) {
return XST_FAILURE;
}
Status = XScuGic_CfgInitialize(&InterruptController, GicConfig,
GicConfig->CpuBaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Setup the Interrupt System
*/
Status = SetUpInterruptSystem(&InterruptController);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Connect a device driver handler that will be called when an
* interrupt for the device occurs, the device driver handler performs
* the specific interrupt processing for the device
*/
Status = XScuGic_Connect(&InterruptController,
XPAR_FABRIC_AXI_TIMER_0_INTERRUPT_INTR,
(Xil_ExceptionHandler)XTmrCtr_InterruptHandler,
(void *)TimerInstancePtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Enable the interrupt for the device and then cause (simulate) an
* interrupt so the handlers will be called
*/
XScuGic_Enable(&InterruptController, XPAR_FABRIC_AXI_TIMER_0_INTERRUPT_INTR);
return XST_SUCCESS;
}
int main()
{
static XGpio GPIOInstance_Ptr;
XGpioPs_Config*GpioConfigPtr;
XTmrCtr TimerInstancePtr;
int xStatus;
u32 Readstatus=0,OldReadStatus=0;
//u32 EffectiveAdress = 0xE000A000;
int iPinNumberEMIO = 54;
u32 uPinDirectionEMIO = 0x0;
// Input Pin
// Pin direction
u32 uPinDirection = 0x1;
int exit_flag,choice,internal_choice;
init_platform();
/* data = *(u32 *)(0x42800004);
print("OK \n");
data = *(u32 *)(0x41200004);
print("OK-1 \n");
*/
print("##### Application Starts #####\n\r");
print("\r\n");
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-1 :AXI GPIO Initialization
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
xStatus = XGpio_Initialize(&GPIOInstance_Ptr,XPAR_AXI_GPIO_0_DEVICE_ID);
if(XST_SUCCESS != xStatus)
print("GPIO INIT FAILED\n\r");
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-2 :AXI GPIO Set the Direction
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XGpio_SetDataDirection(&GPIOInstance_Ptr, 1,1);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-3 :AXI Timer Initialization
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
xStatus = XTmrCtr_Initialize(&TimerInstancePtr,XPAR_AXI_TIMER_0_DEVICE_ID);
if(XST_SUCCESS != xStatus)
print("TIMER INIT FAILED \n\r");
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-4 :Set Timer Handler
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XTmrCtr_SetHandler(&TimerInstancePtr,
Timer_InterruptHandler,
&TimerInstancePtr);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-5 :Setting timer Reset Value
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XTmrCtr_SetResetValue(&TimerInstancePtr,
0, //Change with generic value
0xf0000000);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-6 :Setting timer Option (Interrupt Mode And Auto Reload )
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XTmrCtr_SetOptions(&TimerInstancePtr,
XPAR_AXI_TIMER_0_DEVICE_ID,
(XTC_INT_MODE_OPTION | XTC_AUTO_RELOAD_OPTION ));
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-7  S GPIO Intialization
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GpioConfigPtr = XGpioPs_LookupConfig(XPAR_PS7_GPIO_0_DEVICE_ID);
if(GpioConfigPtr == NULL)
return XST_FAILURE;
xStatus = XGpioPs_CfgInitialize(&psGpioInstancePtr,
GpioConfigPtr,
GpioConfigPtr->BaseAddr);
if(XST_SUCCESS != xStatus)
print(" PS GPIO INIT FAILED \n\r");
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-8 S GPIO pin setting to Output
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XGpioPs_SetDirectionPin(&psGpioInstancePtr, iPinNumber,uPinDirection);
XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, iPinNumber,1);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-9 :EMIO PIN Setting to Input port
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XGpioPs_SetDirectionPin(&psGpioInstancePtr,
iPinNumberEMIO,uPinDirectionEMIO);
XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, iPinNumberEMIO,0);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-10 : SCUGIC interrupt controller Initialization
//Registration of the Timer ISR
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
xStatus=
ScuGicInterrupt_Init(XPAR_PS7_SCUGIC_0_DEVICE_ID,&TimerInstancePtr);
if(XST_SUCCESS != xStatus)
print("  SCUGIC INIT FAILED \n\r");
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//Step-11 :User selection procedure to select and execute tests
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
exit_flag = 0;
while(exit_flag != 1)
{
print(" SELECT the Operation from the Below Menu \r\n");
print("###################### Menu Starts ########################\r\n");
print(" ress '1' to use NORMAL GPIO as an input (BTNU switch)\r\n");
print("ress '2' to use EMIO as an input (BTNR switch)\r\n");
print("ress any other key to Exit\r\n");
print(" ##################### Menu Ends #########################\r\n");
choice = inbyte();
printf("Selection : %c \r\n",choice);
internal_choice = 1;
switch(choice)
{
//~~~~~~~~~~~~~~~~~~~~~~~
// Use case for AXI GPIO
//~~~~~~~~~~~~~~~~~~~~~~~~
case '1':
exit_flag = 0;
print("Press Switch 'BTNU' push button on board \r\n");
print(" \r\n");
while(internal_choice != '0')
{
Readstatus = XGpio_DiscreteRead(&GPIOInstance_Ptr, 1);
if(1== Readstatus && 0 == OldReadStatus )
{
print("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\r\n");
print("BTNU PUSH Button pressed \n\r");
print("LED 'LD9' Turned OFF \r\n");
XGpioPs_WritePin(&psGpioInstancePtr,iPinNumber,0);
//Start Timer
XTmrCtr_Start(&TimerInstancePtr,0);
print("timer start \n\r");
//Wait For interrupt;
print("Wait for the Timer interrupt to tigger \r\n");
print("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\r\n");
print(" \r\n");
while(InterruptFlag != 1);
InterruptFlag = 0;
print(" ###########################################\r\n ");
print("Press '0' to go to Main Menu \n\r ");
print("Press any other key to remain in AXI GPIO Test \n\r ");
print(" ###########################################\r\n ");
internal_choice = inbyte();
printf("Select = %c \r\n",internal_choice);
if(internal_choice != '0')
{
print("Press Switch 'BTNU' push button on board \r\n");
}
}
OldReadStatus = Readstatus;
}
print(" \r\n");
print(" \r\n");
break;
case '2' :
//~~~~~~~~~~~~~~~~~~~~~~~
//Usecase for PS GPIO
//~~~~~~~~~~~~~~~~~~~~~~~~
exit_flag = 0;
print("Press Switch 'BTNR' push button on board \r\n");
print(" \r\n");
while(internal_choice != '0')
{
Readstatus = XGpioPs_ReadPin(&psGpioInstancePtr,
iPinNumberEMIO);
if(1== Readstatus && 0 == OldReadStatus )
{
print("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\r\n");
print("BTNR PUSH Button pressed \n\r");
print("LED 'LD9' Turned OFF \r\n");
XGpioPs_WritePin(&psGpioInstancePtr,iPinNumber,0);
//Start Timer
XTmrCtr_Start(&TimerInstancePtr,0);
print("timer start \n\r");
//Wait For interrupt;
print("Wait for the Timer interrupt to tigger \r\n");
print("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\r\n");
print(" \r\n");
while(InterruptFlag != 1);
InterruptFlag = 0;
print(" ###########################################\r\n ");
print("Press '0' to go to Main Menu \n\r ");
print("Press any other key to remain in EMIO Test \n\r ");
print(" ###########################################\r\n ");
internal_choice = inbyte();
printf("Select = %c \r\n",internal_choice);
if(internal_choice != '0')
{
print("Press Switch 'BTNR' push button on board \r\n");
}
}
OldReadStatus = Readstatus;
}
print(" \r\n");
print(" \r\n");
break;
default :
exit_flag = 1;
break;
}
}
print("\r\n");
print("***********\r\n");
print("BYE \r\n");
print("***********\r\n");
cleanup_platform();
return 0;
}
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