| /****************************************************************************** |
| * |
| * Copyright (C) 2002 - 2015 Xilinx, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
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| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * Use of the Software is limited solely to applications: |
| * (a) running on a Xilinx device, or |
| * (b) that interact with a Xilinx device through a bus or interconnect. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| * this Software without prior written authorization from Xilinx. |
| * |
| ******************************************************************************/ |
| /*****************************************************************************/ |
| /** |
| * |
| * @file xtmrctr_selftest.c |
| * @addtogroup tmrctr_v4_0 |
| * @{ |
| * |
| * Contains diagnostic/self-test functions for the XTmrCtr component. |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- ---- -------- ----------------------------------------------- |
| * 1.00b jhl 02/06/02 First release |
| * 1.10b mta 03/21/07 Updated to new coding style |
| * 2.00a ktn 10/30/09 Updated to use HAL API's. _m is removed from all the macro |
| * definitions. |
| * </pre> |
| * |
| ******************************************************************************/ |
| |
| /***************************** Include Files *********************************/ |
| |
| #include "xil_io.h" |
| #include "xtmrctr.h" |
| #include "xtmrctr_i.h" |
| |
| /************************** Constant Definitions *****************************/ |
| |
| |
| /**************************** Type Definitions *******************************/ |
| |
| |
| /***************** Macros (Inline Functions) Definitions *********************/ |
| |
| |
| /************************** Function Prototypes ******************************/ |
| |
| |
| /************************** Variable Definitions *****************************/ |
| |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * Runs a self-test on the driver/device. This test verifies that the specified |
| * timer counter of the device can be enabled and increments. |
| * |
| * @param InstancePtr is a pointer to the XTmrCtr instance. |
| * @param TmrCtrNumber is the timer counter of the device to operate on. |
| * Each device may contain multiple timer counters. The timer |
| * number is a zero based number with a range of |
| * 0 - (XTC_DEVICE_TIMER_COUNT - 1). |
| * |
| * @return |
| * - XST_SUCCESS if self-test was successful |
| * - XST_FAILURE if the timer is not incrementing. |
| * |
| * @note |
| * |
| * This is a destructive test using the provided timer. The current settings |
| * of the timer are returned to the initialized values and all settings at the |
| * time this function is called are overwritten. |
| * |
| ******************************************************************************/ |
| int XTmrCtr_SelfTest(XTmrCtr * InstancePtr, u8 TmrCtrNumber) |
| { |
| u32 TimerCount1 = 0; |
| u32 TimerCount2 = 0; |
| u16 Count = 0; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(TmrCtrNumber < XTC_DEVICE_TIMER_COUNT); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* |
| * Set the Capture register to 0 |
| */ |
| XTmrCtr_WriteReg(InstancePtr->BaseAddress, TmrCtrNumber, |
| XTC_TLR_OFFSET, 0); |
| |
| /* |
| * Reset the timer and the interrupt |
| */ |
| XTmrCtr_WriteReg(InstancePtr->BaseAddress, TmrCtrNumber, |
| XTC_TCSR_OFFSET, |
| XTC_CSR_INT_OCCURED_MASK | XTC_CSR_LOAD_MASK); |
| |
| /* |
| * Set the control/status register to enable timer |
| */ |
| XTmrCtr_WriteReg(InstancePtr->BaseAddress, TmrCtrNumber, |
| XTC_TCSR_OFFSET, XTC_CSR_ENABLE_TMR_MASK); |
| |
| /* |
| * Read the timer |
| */ |
| TimerCount1 = XTmrCtr_ReadReg(InstancePtr->BaseAddress, |
| TmrCtrNumber, XTC_TCR_OFFSET); |
| /* |
| * Make sure timer is incrementing if the Count rolls over to zero |
| * and the timer still has not incremented an error is returned |
| */ |
| |
| do { |
| TimerCount2 = XTmrCtr_ReadReg(InstancePtr->BaseAddress, |
| TmrCtrNumber, XTC_TCR_OFFSET); |
| Count++; |
| } |
| while ((TimerCount1 == TimerCount2) && (Count != 0)); |
| |
| /* |
| * Reset the timer and the interrupt |
| */ |
| XTmrCtr_WriteReg(InstancePtr->BaseAddress, TmrCtrNumber, |
| XTC_TCSR_OFFSET, |
| XTC_CSR_INT_OCCURED_MASK | XTC_CSR_LOAD_MASK); |
| |
| /* |
| * Set the control/status register to 0 to complete initialization |
| * this disables the timer completely and allows it to be used again |
| */ |
| |
| XTmrCtr_WriteReg(InstancePtr->BaseAddress, TmrCtrNumber, |
| XTC_TCSR_OFFSET, 0); |
| |
| if (TimerCount1 == TimerCount2) { |
| return XST_FAILURE; |
| } |
| else { |
| return XST_SUCCESS; |
| } |
| } |
| /** @} */ |