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32 /*****************************************************************************/
35 * @file xgpiops_selftest.c
36 * @addtogroup gpiops_v2_1
39 * This file contains a diagnostic self-test function for the XGpioPs driver.
41 * Read xgpiops.h file for more information.
44 * MODIFICATION HISTORY:
46 * Ver Who Date Changes
47 * ----- ---- -------- -----------------------------------------------
48 * 1.00a sv 01/18/10 First Release
51 *****************************************************************************/
53 /***************************** Include Files ********************************/
58 /************************** Constant Definitions ****************************/
61 /**************************** Type Definitions ******************************/
63 /***************** Macros (Inline Functions) Definitions ********************/
65 /************************** Variable Definitions ****************************/
67 /************************** Function Prototypes *****************************/
69 /*****************************************************************************/
72 * This function runs a self-test on the GPIO driver/device. This function
73 * does a register read/write test on some of the Interrupt Registers.
75 * @param InstancePtr is a pointer to the XGpioPs instance.
78 * - XST_SUCCESS if the self-test passed.
79 * - XST_FAILURE otherwise.
82 ******************************************************************************/
83 int XGpioPs_SelfTest(XGpioPs *InstancePtr)
85 int Status = XST_SUCCESS;
88 u32 CurrentIntrPolarity;
93 u32 IntrTestValue = 0x22;
95 Xil_AssertNonvoid(InstancePtr != NULL);
96 Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
99 * Disable the Interrupts for Bank 0 .
101 IntrEnabled = XGpioPs_IntrGetEnabled(InstancePtr, XGPIOPS_BANK0);
102 XGpioPs_IntrDisable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);
105 * Get the Current Interrupt properties for Bank 0.
106 * Set them to a known value, read it back and compare.
108 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &CurrentIntrType,
109 &CurrentIntrPolarity, &CurrentIntrOnAny);
111 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, IntrTestValue,
112 IntrTestValue, IntrTestValue);
114 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &IntrType,
115 &IntrPolarity, &IntrOnAny);
117 if ((IntrType != IntrTestValue) && (IntrPolarity != IntrTestValue) &&
118 (IntrOnAny != IntrTestValue)) {
120 Status = XST_FAILURE;
124 * Restore the contents of all the interrupt registers modified in this
127 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, CurrentIntrType,
128 CurrentIntrPolarity, CurrentIntrOnAny);
130 XGpioPs_IntrEnable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);