PIC24F
I/O Ports Library Help
Table Of Contents
2 Using Library Functions in Your Code
4.5 SetPriorityIntX (X = 0 to 4)
For this peripheral library:
· A parallel I/O port that shares a pin with a peripheral is, in general, subservient to the peripheral.
· When a peripheral is enabled and the peripheral is actively driving an associated pin, the use of the pin as a general purpose output pin is disabled.
Library routine parameters can be constructed using either AND based mask or AND_OR based mask setting. For more information on these masks, see 16-bit Peripheral Libraries.
Examples of use for both the methods are below.
Example of Use ( AND mask )
CloseINT0(EXT_INT_PRI_3 & EXT_INT_ENABL & RISING_EDGE_INT);
Example of Use ( AND_OR mask )
#define USE_AND_OR /* To enable AND_OR mask setting */
#include<ports.h>
/*
User code
*/
CloseINT0(EXT_INT_PRI_3 | EXT_INT_ENABL | RISING_EDGE_INT);
/*
User code
*/
Function Prototype |
void CloseINT0(void); void CloseINT1(void); void CloseINT2(void); void CloseINT3(void); void CloseINT4(void); |
Include |
ports.h |
Description |
This function disables the external interrupt on INT pin. |
Arguments |
None |
Return Value |
None |
Remarks: |
This function disables the interrupt on INT pin and clears the corresponding Interrupt flag. |
Source File: |
CloseInt0.c CloseInt1.c CloseInt2.c CloseInt3.c CloseInt4.c |
Function Prototype |
void ConfigINT0(unsigned int config); void ConfigINT1(unsigned int config); void ConfigINT2(unsigned int config); void ConfigINT3(unsigned int config); void ConfigINT4(unsigned int config); |
Include |
ports.h |
Description |
This function disables the external interrupt on INT pin. |
Arguments |
config - Interrupt edge, priority and enable/disable information as defined below: Interrupt edge selection RISING_EDGE_INT FALLING_EDGE_INT Interrupt enable INT_ENABLE INT_DISABLE Interrupt priority INT_PRI_0 INT_PRI_1 INT_PRI_2 INT_PRI_3 INT_PRI_4 INT_PRI_5 INT_PRI_6 INT_PRI_7 |
Return Value |
None |
Remarks: |
This function clears the interrupt flag corresponding to the INTx pin and then selects the edge detect polarity. It then sets the interrupt priority and enables/disables the interrupt. |
Source File: |
ConfigInt0.c ConfigInt1.c ConfigInt2.c ConfigInt3.c ConfigInt4.c |
Function Prototype |
void ConfigCNPullups(long int config); |
Include |
ports.h |
Description |
This function configures the pull-up resistors for CN pins. |
Arguments |
config - This is the 32-bit value for configuring pull-ups. The lower word is stored into CNPU1 register and next upper word is stored into CNPU2 register. The upper 10 bits of CNPU2 register are unimplemented. |
Return Value |
None |
Remarks: |
This function disables the interrupt on INT pin and clears the corresponding Interrupt flag. |
Source File: |
ConfigCNPullups.c |
Function Prototype |
void ConfigIntCN(long int config); |
Include |
ports.h |
Description |
This function configures the CN interrupts. |
Arguments |
config - This is the 32-bit value for configuring the CN interrupts. The lower 22 bits contain the individual enable/disable information for the CN interrupts. Setting bit x (x = 0, 1, ...,21) would enable the CNx interrupt. The upper-most byte contains the Interrupt Priority and Enable/Disable bits. The lower word is stored into the CNEN1register and next upper byte is stored into the CNEN2 register and the upper most byte is used for setting priority and enable/disable the CN interrupts. |
Return Value |
None |
Remarks: |
This function clears the CN interrupt flag and enables/disables the individual interrupts on CN pins. This also configures the interrupt priority and enables/disables the CN Interrupt Enable bit. |
Source File: |
ConfigIntCN.c |
Macro |
EnableCN0 EnableCN1 EnableCN2 .... EnableCN21 |
Include |
ports.h |
Description |
This macro enables the individual change notification interrupt. |
Arguments |
None |
Remarks |
None |
Macro |
DisableCN0 DisableCN1 DisableCN2 .... DisableCN21 |
Include |
ports.h |
Description |
This macro disables individual change notification interrupt. |
Arguments |
None |
Remarks |
None |
Macro |
DisableINT0 DisableINT1 DisableINT2 DisableINT3 DisableINT4 |
Include |
ports.h |
Description |
This macro disables the individual external interrupt. |
Arguments |
None |
Remarks |
None |
Macro |
EnableINT0 EnableINT1 EnableINT2 EnableINT3 EnableINT4 |
Include |
ports.h |
Description |
This macro enables the individual external interrupt. |
Arguments |
None |
Remarks |
None |
Macro |
SetPriorityInt0 SetPriorityInt1 SetPriorityInt2 SetPriorityInt3 SetPriorityInt4 |
Include |
ports.h |
Description |
This macro sets priority for external interrupts. |
Arguments |
priority |
Remarks |
This macro sets External Interrupt Priority bits of Interrupt Priority Control register. |