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32 /*****************************************************************************/
35 * @file xgpiops_selftest.c
37 * This file contains a diagnostic self-test function for the XGpioPs driver.
39 * Read xgpiops.h file for more information.
42 * MODIFICATION HISTORY:
44 * Ver Who Date Changes
45 * ----- ---- -------- -----------------------------------------------
46 * 1.00a sv 01/18/10 First Release
47 * 3.00 kvn 02/13/15 Modified code for MISRA-C:2012 compliance.
50 *****************************************************************************/
52 /***************************** Include Files ********************************/
57 /************************** Constant Definitions ****************************/
60 /**************************** Type Definitions ******************************/
62 /***************** Macros (Inline Functions) Definitions ********************/
64 /************************** Variable Definitions ****************************/
66 /************************** Function Prototypes *****************************/
68 /*****************************************************************************/
71 * This function runs a self-test on the GPIO driver/device. This function
72 * does a register read/write test on some of the Interrupt Registers.
74 * @param InstancePtr is a pointer to the XGpioPs instance.
77 * - XST_SUCCESS if the self-test passed.
78 * - XST_FAILURE otherwise.
81 ******************************************************************************/
82 s32 XGpioPs_SelfTest(XGpioPs *InstancePtr)
84 s32 Status = XST_SUCCESS;
86 u32 CurrentIntrType = 0U;
87 u32 CurrentIntrPolarity = 0U;
88 u32 CurrentIntrOnAny = 0U;
90 u32 IntrPolarity = 0U;
92 u32 IntrTestValue = 0x22U;
94 Xil_AssertNonvoid(InstancePtr != NULL);
95 Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
98 * Disable the Interrupts for Bank 0 .
100 IntrEnabled = XGpioPs_IntrGetEnabled(InstancePtr, XGPIOPS_BANK0);
101 XGpioPs_IntrDisable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);
104 * Get the Current Interrupt properties for Bank 0.
105 * Set them to a known value, read it back and compare.
107 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &CurrentIntrType,
108 &CurrentIntrPolarity, &CurrentIntrOnAny);
110 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, IntrTestValue,
111 IntrTestValue, IntrTestValue);
113 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &IntrType,
114 &IntrPolarity, &IntrOnAny);
116 if ((IntrType != IntrTestValue) && (IntrPolarity != IntrTestValue) &&
117 (IntrOnAny != IntrTestValue)) {
119 Status = XST_FAILURE;
123 * Restore the contents of all the interrupt registers modified in this
126 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, CurrentIntrType,
127 CurrentIntrPolarity, CurrentIntrOnAny);
129 XGpioPs_IntrEnable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);