CaptureCC32XX.h File Reference

Detailed Description

Capture driver interface for CC32XX devices.

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Operation

This driver uses a general purpose timer hardware peripheral to implement the capture functionality. The capture driver only uses half of a timer peripheral (16-bit timer). This is not a software limitation but due to the general purpose timer hardware implementation. For CC32XX devices, the system clock is 80 MHz. A 16-bit timer peripheral has 24-bits of resolution when the prescaler register is used as an 8-bit linear extension.

Resource Allocation

Each general purpose timer block contains two timers, Timer A and Timer B, that can be configured to operate independently. This behavior is managed through a set of resource allocation APIs. For example, the TimerCC32XX_allocateTimerResource API will allocate a timer for exclusive use. Any attempt to re-allocate this resource by the TimerCC32XX, PWMCC32XX, or CaptureCC32xx drivers will result in a false value being returned from the allocation API. To free a timer resource, the TimerCC32XX_freeTimerResource is used. The application is not responsible for calling these allocation APIs directly.

Capture Modes

This device implementation only works with the following modes for Capture_Mode :

• Capture_RISING_EDGE
• Capture_FALLING_EDGE
• Capture_ANY_EDGE All other modes will fail.

#include <stdbool.h>
#include <stdint.h>
#include <ti/drivers/Capture.h>
#include <ti/drivers/Power.h>
#include <ti/drivers/dpl/HwiP.h>
#include <ti/devices/cc32xx/inc/hw_ints.h>
#include <ti/devices/cc32xx/inc/hw_ocp_shared.h>

Include dependency graph for CaptureCC32XX.h:

Go to the source code of this file.

Data Structures
struct	CaptureCC32XX_HWAttrs
	CaptureCC32XX Hardware Attributes. More...
struct	CaptureCC32XX_Object
	CaptureCC32XX_Object. More...

Macros
PIN 01, GPIO10, uses Timer0B for Capture.
#define	CaptureCC32XX_PIN_01
PIN 02, GPIO11, uses Timer1A for Capture.
#define	CaptureCC32XX_PIN_02
PIN 03, GPIO12, uses Timer1B for Capture.
#define	CaptureCC32XX_PIN_03
PIN 04, GPIO13, uses Timer2A for Capture.
#define	CaptureCC32XX_PIN_04
PIN 05, GPIO14, uses Timer2B for Capture.
#define	CaptureCC32XX_PIN_05
PIN 06, GPIO15, uses Timer3A for Capture.
#define	CaptureCC32XX_PIN_06
PIN 07, GPIO16, uses Timer3B for Capture.
#define	CaptureCC32XX_PIN_07
PIN 15, GPIO22, uses Timer2A for Capture.
#define	CaptureCC32XX_PIN_15
PIN 17, GPIO24 (TDO), uses Timer3A for Capture.
#define	CaptureCC32XX_PIN_17
PIN 50, GPIO0, uses Timer0A for Capture.
#define	CaptureCC32XX_PIN_50
PIN 53, GPIO30, uses Timer2B for Capture.
#define	CaptureCC32XX_PIN_53
PIN 55, GPIO1, uses Timer0B for Capture.
#define	CaptureCC32XX_PIN_55
PIN 57, GPIO2, uses Timer1A for Capture.
#define	CaptureCC32XX_PIN_57
PIN 60, GPIO5, uses Timer2B for Capture.
#define	CaptureCC32XX_PIN_60
PIN 61, GPIO6, uses Timer3A for Capture.
#define	CaptureCC32XX_PIN_61
PIN 63, GPIO8, uses Timer3A for Capture.
#define	CaptureCC32XX_PIN_63
PIN 64, GPIO9, uses Timer0A for Capture.
#define	CaptureCC32XX_PIN_64

Variables
const Capture_FxnTable	CaptureCC32XX_fxnTable

Variable Documentation

CaptureCC32XX_fxnTable

const Capture_FxnTable CaptureCC32XX_fxnTable