2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
359 lines
10 KiB
C
Executable file
359 lines
10 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2007 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/****************************************************************************/
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/**
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*
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* @file xsysmon_low_level_example.c
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*
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* This file contains a design example using the basic driver functions
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* of the System Monitor driver. The example here shows using the
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* driver/device in polled mode to check the on-chip temperature and voltages.
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*
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*
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* @note
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*
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* The values of the on-chip temperature and the on-chip Vccaux voltage are read
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* from the device and then the alarm thresholds are set in such a manner that
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* the alarms occur.
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*
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*
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* <pre>
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*
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ----- -------- -----------------------------------------------------
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* 1.00a xd/sv 05/22/07 First release
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* 2.00a sv 07/07/08 Changed the example to read 16 bits of data from the
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* the ADC data registers.
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* 4.00a ktn 10/22/09 Updated the example to use macros that have been
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* renamed to remove _m from the name of the macro.
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* 5.01a bss 03/13/12 Modified while loop condition to wait for EOS bit
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* to become high
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* 5.03a bss 04/25/13 Modified SysMonLowLevelExample function to set
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* Sequencer Mode as Safe mode instead of Single
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* channel mode before configuring Sequencer registers.
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* CR #703729
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* </pre>
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*
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*****************************************************************************/
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/***************************** Include Files ********************************/
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#include "xsysmon_hw.h"
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#include "xparameters.h"
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#include "xstatus.h"
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/************************** Constant Definitions ****************************/
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/*
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* The following constants map to the XPAR parameters created in the
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* xparameters.h file. They are defined here such that a user can easily
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* change all the needed parameters in one place.
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*/
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#define SYSMON_BASEADDR XPAR_SYSMON_0_BASEADDR
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/**************************** Type Definitions ******************************/
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/***************** Macros (Inline Functions) Definitions ********************/
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/************************** Function Prototypes *****************************/
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int SysMonLowLevelExample(u32 BaseAddress);
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/************************** Variable Definitions ****************************/
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/****************************************************************************/
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/**
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*
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* Main function that invokes the example given in this file.
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*
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* @param None.
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*
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* @return
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* - XST_SUCCESS if the example has completed successfully.
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* - XST_FAILURE if the example has failed.
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*
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* @note None.
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*
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*****************************************************************************/
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int main(void)
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{
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int Status;
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/*
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* Run the SysMonitor Low level example, specify the Base Address that
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* is generated in xparameters.h.
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*/
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Status = SysMonLowLevelExample(SYSMON_BASEADDR);
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if (Status != XST_SUCCESS) {
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return XST_FAILURE;
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}
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return XST_SUCCESS;
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}
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/****************************************************************************/
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/**
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*
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* This function runs a test on the System Monitor device using the
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* basic driver functions.
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* The function does the following tasks:
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* - Reset the device
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* - Setup alarm thresholds for on-chip temperature and VCCAUX.
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* - Setup sequence registers to continuously monitor on-chip temperature
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* and VCCAUX.
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* - Setup configuration registers to start the sequence.
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* - Read latest on-chip temperature and VCCAUX, as well as their maximum
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* and minimum values. Also check if alarm(s) are set.
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*
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* @param BaseAddress is the XPAR_<SYSMON_ADC_instance>_BASEADDRESS value
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* from xparameters.h.
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*
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* @return XST_SUCCESS
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*
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* @note None.
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*
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****************************************************************************/
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int SysMonLowLevelExample(u32 BaseAddress)
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{
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u32 RegValue;
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u16 TempData;
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u16 VccauxData;
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/*
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* Reset the device.
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*/
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XSysMon_WriteReg(BaseAddress, XSM_SRR_OFFSET, XSM_SRR_IPRST_MASK);
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/*
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* Disable the Channel Sequencer before configuring the Sequence
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* registers.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_CFR1_OFFSET) &
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(~ XSM_CFR1_SEQ_VALID_MASK);
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XSysMon_WriteReg(BaseAddress, XSM_CFR1_OFFSET, RegValue |
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XSM_CFR1_SEQ_SAFEMODE_MASK);
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/*
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* Setup the Averaging to be done for the channels in the
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* Configuration 0 register as 16 samples:
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*/
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RegValue = XSysMon_ReadReg(BaseAddress,
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XSM_CFR0_OFFSET) & (~XSM_CFR0_AVG_VALID_MASK);
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XSysMon_WriteReg(BaseAddress, XSM_CFR0_OFFSET,
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RegValue | XSM_CFR0_AVG16_MASK);
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/*
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* Setup the Sequence register for 1st Auxiliary channel
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* Setting is:
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* - Add acquisition time by 6 ADCCLK cycles.
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* - Bipolar Mode
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*
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* Setup the Sequence register for 16th Auxiliary channel
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* Setting is:
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* - Add acquisition time by 6 ADCCLK cycles.
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* - Unipolar Mode
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*/
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/*
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* Set the Acquisition time for the specified channels.
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*/
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XSysMon_WriteReg(BaseAddress,XSM_SEQ07_OFFSET,
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(XSM_SEQ_CH_AUX00 | XSM_SEQ_CH_AUX15) >>
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XSM_SEQ_CH_AUX_SHIFT);
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/*
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* Set the input mode for the specified channels.
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*/
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XSysMon_WriteReg(BaseAddress, XSM_SEQ05_OFFSET,
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XSM_SEQ_CH_AUX00 >> XSM_SEQ_CH_AUX_SHIFT);
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/*
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* Enable the averaging on the following channels in the Sequencer
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* registers:
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* - On-chip Temperature
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* - On-chip VCCAUX supply sensor
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* - 1st Auxiliary Channel
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* - 16th Auxiliary Channel
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*/
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XSysMon_WriteReg(BaseAddress,XSM_SEQ02_OFFSET,
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XSM_SEQ_CH_TEMP | XSM_SEQ_CH_VCCAUX);
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XSysMon_WriteReg(BaseAddress, XSM_SEQ03_OFFSET,
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(XSM_SEQ_CH_AUX00 | XSM_SEQ_CH_AUX15) >>
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XSM_SEQ_CH_AUX_SHIFT);
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/*
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* Enable the following channels in the Sequencer registers:
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* - On-chip Temperature
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* - On-chip VCCAUX supply sensor
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* - 1st Auxiliary Channel
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* - 16th Auxiliary Channel
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*/
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XSysMon_WriteReg(BaseAddress, XSM_SEQ00_OFFSET,
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XSM_SEQ_CH_TEMP | XSM_SEQ_CH_VCCAUX);
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XSysMon_WriteReg(BaseAddress, XSM_SEQ01_OFFSET,
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(XSM_SEQ_CH_AUX00 | XSM_SEQ_CH_AUX15) >>
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XSM_SEQ_CH_AUX_SHIFT);
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/*
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* Set the ADCCLK frequency equal to 1/32 of System clock for the System
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* Monitor/ADC in the Configuration Register 2.
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*/
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XSysMon_WriteReg(BaseAddress, XSM_CFR2_OFFSET, 32 <<
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XSM_CFR2_CD_SHIFT);
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/*
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* Enable the Channel Sequencer in continuous sequencer cycling mode.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_CFR1_OFFSET) &
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(~ XSM_CFR1_SEQ_VALID_MASK);
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XSysMon_WriteReg(BaseAddress, XSM_CFR1_OFFSET, RegValue |
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XSM_CFR1_SEQ_CONTINPASS_MASK);
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/*
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* Wait till the End of Sequence occurs
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*/
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XSysMon_ReadReg(BaseAddress, XSM_SR_OFFSET); /* Clear the old status */
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while (((XSysMon_ReadReg(BaseAddress, XSM_SR_OFFSET)) &
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XSM_SR_EOS_MASK) != XSM_SR_EOS_MASK);
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/*
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* Read the current value of the on-chip temperature.
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*/
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TempData = XSysMon_ReadReg(BaseAddress, XSM_TEMP_OFFSET);
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/*
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* Read the current value of the on-chip VCCAUX voltage.
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*/
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VccauxData = XSysMon_ReadReg(BaseAddress, XSM_VCCAUX_OFFSET);
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/*
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* Disable all the alarms in the Configuration Register 1.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_CFR1_OFFSET);
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RegValue |= XSM_CFR1_ALM_ALL_MASK;
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XSysMon_WriteReg(BaseAddress, XSM_CFR1_OFFSET, RegValue);
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/*
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* Setup Alarm threshold registers for
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* On-chip Temperature High limit
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* VCCAUX High limit
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* VCCAUX Low limit
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*/
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XSysMon_WriteReg(BaseAddress, XSM_ATR_TEMP_UPPER_OFFSET,
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TempData - 0x6F);
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XSysMon_WriteReg(BaseAddress, XSM_ATR_VCCAUX_UPPER_OFFSET,
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VccauxData - 0x6F);
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XSysMon_WriteReg(BaseAddress, XSM_ATR_VCCAUX_LOWER_OFFSET,
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VccauxData + 0x6F);
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/*
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* Enable Alarm 0 for on-chip temperature and Alarm 2 for on-chip
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* VCCAUX in the Configuration Register 1.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress,
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XSM_CFR1_OFFSET) & (~XSM_CFR1_ALM_ALL_MASK);
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RegValue |= ((~(XSM_CFR1_ALM_VCCAUX_MASK | XSM_CFR1_ALM_TEMP_MASK)) &
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XSM_CFR1_ALM_ALL_MASK);
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XSysMon_WriteReg(BaseAddress, XSM_CFR1_OFFSET, RegValue);
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/*
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* Read the current value of on-chip temperature.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_TEMP_OFFSET);
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/*
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* Read the Maximum value of on-chip temperature.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_MAX_TEMP_OFFSET);
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/*
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* Read the Minimum value of on-chip temperature.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_MIN_TEMP_OFFSET);
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/*
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* Check if alarm for on-chip temperature is set.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_AOR_OFFSET) &
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XSM_AOR_TEMP_MASK;
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if (RegValue) {
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/*
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* Alarm for on-chip temperature is set.
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* The required processing should be put here.
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*/
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}
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/*
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* Read the current value of on-chip VCCAUX.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_VCCAUX_OFFSET);
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/*
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* Read the Maximum value of on-chip VCCAUX.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_MAX_VCCAUX_OFFSET);
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/*
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* Read the Minimum value of on-chip VCCAUX.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_MIN_VCCAUX_OFFSET);
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/*
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* Check if the alarm for on-chip VCCAUX is set.
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*/
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RegValue = XSysMon_ReadReg(BaseAddress, XSM_AOR_OFFSET) &
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XSM_AOR_VCCAUX_MASK;
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if (RegValue) {
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/*
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* Alarm for on-chip VCCAUX is set.
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* The required processing should be put here.
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*/
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}
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return XST_SUCCESS;
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}
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