timer2.h

来自「PID control speed of motor using dspIC30」· C头文件 代码 · 共 66 行

#include "p30f2010.h"

#define FCY 29491200
// TCY=1/FCY = 33.9 ns 
/* Timer2 Control Register (T2CON) Bit Defines */

#define T2_ON               0xffff      /* Timer2 ON */
#define T2_OFF              0x7fff      /* Timer2 OFF */

#define T2_IDLE_CON         0xdfff      /* operate during sleep */
#define T2_IDLE_STOP        0xffff      /* stop operation during sleep */

#define T2_GATE_ON          0xffff      /* Timer2 Gate time accumulation enabled  */
#define T2_GATE_OFF         0xffbf      /* Timer2 Gate time accumulation disabled */

#define T2_PS_1_1           0xffcf      /* Prescaler 1:1   */
#define T2_PS_1_8           0xffdf      /*           1:8   */
#define T2_PS_1_64          0xffef      /*           1:64  */
#define T2_PS_1_256         0xffff      /*           1:256 */

#define T2_32BIT_MODE_ON    0xffff      /* Timer 2 and Timer 3 form a 32 bit Timer */
#define T2_32BIT_MODE_OFF   0xfff7      

#define T2_SOURCE_EXT       0xffff      /* External clock source */
#define T2_SOURCE_INT       0xfffd      /* Internal clock source */

/* defines for Timer Interrupts */
#define T2_INT_PRIOR_7      0xffff      /* 111 = Interrupt is priority 7 */ 
#define T2_INT_PRIOR_6      0xfffe      /* 110 = Interrupt is priority 6 */
#define T2_INT_PRIOR_5      0xfffd      /* 101 = Interrupt is priority 5 */
#define T2_INT_PRIOR_4      0xfffc      /* 100 = Interrupt is priority 4 */
#define T2_INT_PRIOR_3      0xfffb      /* 011 = Interrupt is priority 3 */
#define T2_INT_PRIOR_2      0xfffa      /* 010 = Interrupt is priority 2 */
#define T2_INT_PRIOR_1      0xfff9      /* 001 = Interrupt is priority 1 */
#define T2_INT_PRIOR_0      0xfff8      /* 000 = Interrupt is priority 0 */

#define T2_INT_ON           0xffff      /* Interrupt Enable */  
#define T2_INT_OFF          0xfff7      /* Interrupt Disable */

/* Macros to  Enable/Disable interrupts and set Interrupt priority of Timers 2*/

#define EnableIntT2                    _T2IE = 1
#define DisableIntT2                   _T2IE = 0
#define SetPriorityIntT2(priority)     _T2IP = priority

/* Timer2 Function Prototypes */

/* OpenTimer2 */
void OpenTimer2(unsigned int config, unsigned int period);

/* CloseTimer2 */
void CloseTimer2(void);

/* ReadTimer2 */
//unsigned int ReadTimer2(void) __attribute__ ((section (".libperi")));

/* WriteTimer2 */
//void WriteTimer2( unsigned int timer) __attribute__ ((section (".libperi")));

/* ConfigIntTimer2 */
void ConfigIntTimer2(unsigned int config);

void timer2_init(void);

void __attribute__((__interrupt__, __no_auto_psv__, __shadow__)) _T2Interrupt(void);