Overview

This file contains a design example using the driver functions of the XADC/ADC driver.

This example here shows the usage of the driver/device in interrupt mode to handle on-chip temperature and voltage alarm interrupts.

Note

This code assumes that no Operating System is being used.

The values of the on-chip temperature and the on-chip Vccaux voltage are read from the device and then the alarm thresholds are set in such a manner that the alarms occur.

MODIFICATION HISTORY:

Ver   Who    Date     Changes



1.00a bss    01/20/12 First release
2.2   ms     01/23/17 Modified xil_printf statement in main function to
                      ensure that "Successfully ran" and "Failed" strings
                      are available in all examples. This is a fix for
                      CR-965028.
2.7   cog    07/24/23 Added support for SDT flow

Functions
int	XAdcIntrExample (XScuGic IntcInstancePtr, XAdcPs XAdcInstPtr, u16 XAdcDeviceId, u16 XAdcIntrId, int *Temp)
	This function runs a test on the XADC/ADC device using the driver APIs. More...

int	main (void)
	Main function that invokes the XADC Interrupt example. More...

Function Documentation

int main ( void )

Main function that invokes the XADC Interrupt example.

Parameters

None.

Returns

XST_SUCCESS if the example has completed successfully.
XST_FAILURE if the example has failed.

Note: None.

References XAdcIntrExample().

int XAdcIntrExample	(	XScuGic *	IntcInstancePtr,
		XAdcPs *	XAdcInstPtr,
		u16	XAdcDeviceId,
		u16	XAdcIntrId,
		int *	Temp
	)

This function runs a test on the XADC/ADC device using the driver APIs.

The function does the following tasks:

Initiate the XADC/ADC device driver instance
Run self-test on the device
Reset the device
Set up alarms for on-chip temperature and VCCPAUX
Set up sequence registers to continuously monitor on-chip temperature and VCCPAUX
Setup interrupt system
Enable interrupts
Set up configuration registers to start the sequence
Wait until temperature alarm interrupt or VCCPAUX alarm interrupt occurs

Parameters

IntcInstancePtr	is a pointer to the Interrupt Controller driver Instance.
XAdcInstPtr	is a pointer to the XAdcPs driver Instance.
XAdcDeviceId	is the XPAR_<SYSMON_ADC_instance>_DEVICE_ID value from xparameters.h.
XAdcIntrId	is XPAR_<INTC_instance>_<SYSMON_ADC_instance>_VEC_ID value from xparameters.h
Temp	is an output parameter, it is a pointer through which the current temperature value is returned to the main function.

Returns

XST_SUCCESS if the example has completed successfully.
XST_FAILURE if the example has failed.

Note: This function may never return if no interrupt occurs.

References XAdcPs_Config::BaseAddress, XADCPS_ATR_TEMP_LOWER, XADCPS_ATR_TEMP_UPPER, XADCPS_ATR_VCCPAUX_LOWER, XADCPS_ATR_VCCPAUX_UPPER, XAdcPs_CfgInitialize(), XADCPS_CFR1_ALM_TEMP_MASK, XADCPS_CFR1_ALM_VCCPAUX_MASK, XADCPS_CH_TEMP, XADCPS_CH_VCCPAUX, XAdcPs_GetAdcData(), XAdcPs_IntrClear(), XAdcPs_IntrEnable(), XAdcPs_IntrGetStatus(), XADCPS_INTX_ALM0_MASK, XADCPS_INTX_ALM5_MASK, XAdcPs_LookupConfig(), XAdcPs_SelfTest(), XADCPS_SEQ_MODE_INDEPENDENT, XADCPS_SEQ_MODE_SAFE, XAdcPs_SetAlarmEnables(), XAdcPs_SetAlarmThreshold(), and XAdcPs_SetSequencerMode().

Referenced by main().

Overview

Functions

Function Documentation