cc2538_gptimer.h
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/*
* Copyright (C) 2014 Loci Controls Inc.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @defgroup cpu_cc2538_gptimer CC2538 General Purpose Timer
* @ingroup cpu_cc2538_regs
* @{
*
* @file
* @brief CC2538 General Purpose Timer (GPTIMER) driver
*
* @author Ian Martin <ian@locicontrols.com>
*/
#ifndef CC2538_GPTIMER_H
#define CC2538_GPTIMER_H
#include <stdint.h>
#include "cc2538.h"
#ifdef __cplusplus
extern "C" {
#endif
#define GPTIMER_NUMOF 4 /**< The CC2538 has four general-purpose timer units. */
#define NUM_CHANNELS_PER_GPTIMER 2 /**< Each G.P. timer unit has two channels: A and B. */
enum {
GPTIMER_ONE_SHOT_MODE = 1, /**< GPTIMER one-shot mode */
GPTIMER_PERIODIC_MODE = 2, /**< GPTIMER periodic mode */
GPTIMER_CAPTURE_MODE = 3, /**< GPTIMER capture mode */
};
enum {
GPTMCFG_32_BIT_TIMER = 0, /**< 32-bit timer configuration */
GPTMCFG_32_BIT_REAL_TIME_CLOCK = 1, /**< 32-bit real-time clock */
GPTMCFG_16_BIT_TIMER = 4, /**< 16-bit timer configuration */
};
/**
* @brief GPTIMER component registers
*/
typedef struct {
cc2538_reg_t CFG; /**< GPTIMER Configuration */
/**
* @brief Timer A
*/
union {
cc2538_reg_t TAMR; /**< GPTIMER Timer A mode */
struct {
cc2538_reg_t TAMR2 : 2; /**< GPTM Timer A mode */
cc2538_reg_t TACMR : 1; /**< GPTM Timer A capture mode */
cc2538_reg_t TAAMS : 1; /**< GPTM Timer A alternate mode */
cc2538_reg_t TACDIR : 1; /**< GPTM Timer A count direction */
cc2538_reg_t TAMIE : 1; /**< GPTM Timer A match interrupt enable */
cc2538_reg_t TAWOT : 1; /**< GPTM Timer A wait-on-trigger */
cc2538_reg_t TASNAPS : 1; /**< GPTM Timer A snap shot mode */
cc2538_reg_t TAILD : 1; /**< GPTM Timer A interval load write */
cc2538_reg_t TAPWMIE : 1; /**< GPTM Timer A PWM interrupt enable */
cc2538_reg_t TAMRSU : 1; /**< Timer A match register update mode */
cc2538_reg_t TAPLO : 1; /**< Legacy PWM operation */
cc2538_reg_t RESERVED5 : 20; /**< Reserved bits */
} TAMRbits;
} cc2538_gptimer_tamr;
/**
* @brief Timer B
*/
union {
cc2538_reg_t TBMR; /**< GPTIMER Timer B mode */
struct {
cc2538_reg_t TBMR2 : 2; /**< GPTM Timer B mode */
cc2538_reg_t TBCMR : 1; /**< GPTM Timer B capture mode */
cc2538_reg_t TBAMS : 1; /**< GPTM Timer B alternate mode */
cc2538_reg_t TBCDIR : 1; /**< GPTM Timer B count direction */
cc2538_reg_t TBMIE : 1; /**< GPTM Timer B match interrupt enable */
cc2538_reg_t TBWOT : 1; /**< GPTM Timer B wait-on-trigger */
cc2538_reg_t TBSNAPS : 1; /**< GPTM Timer B snap shot mode */
cc2538_reg_t TBILD : 1; /**< GPTM Timer B interval load write */
cc2538_reg_t TBPWMIE : 1; /**< GPTM Timer B PWM interrupt enable */
cc2538_reg_t TBMRSU : 1; /**< Timer B match register update mode */
cc2538_reg_t TBPLO : 1; /**< Legacy PWM operation */
cc2538_reg_t RESERVED6 : 20; /**< Reserved bits */
} TBMRbits;
} cc2538_gptimer_tbmr;
/**
* @brief Timer Control
*/
union {
cc2538_reg_t CTL; /**< GPTIMER Control */
struct {
cc2538_reg_t TAEN : 1; /**< GPTM Timer A enable */
cc2538_reg_t TASTALL : 1; /**< GPTM Timer A stall enable */
cc2538_reg_t TAEVENT : 1; /**< GPTM Timer A event mode */
cc2538_reg_t RESERVED1 : 1; /**< Reserved bits */
cc2538_reg_t TAOTE : 1; /**< GPTM Timer A PWM output trigger enable */
cc2538_reg_t TAPWML : 1; /**< GPTM Timer A PWM output level */
cc2538_reg_t RESERVED2 : 1; /**< Reserved bits */
cc2538_reg_t TBEN : 1; /**< GPTM Timer B enable */
cc2538_reg_t TBSTALL : 1; /**< GPTM Timer B stall enable */
cc2538_reg_t TBEVENT : 1; /**< GPTM Timer B event mode */
cc2538_reg_t RESERVED3 : 1; /**< Reserved bits */
cc2538_reg_t TBOTE : 1; /**< GPTM Timer B PWM output trigger enable */
cc2538_reg_t TBPWML : 1; /**< GPTM Timer B PWM output level */
cc2538_reg_t RESERVED4 : 17; /**< Reserved bits */
} CTLbits;
} cc2538_gptimer_ctl;
cc2538_reg_t SYNC; /**< GPTIMER Synchronize */
cc2538_reg_t RESERVED2; /**< Reserved word */
/**
* @brief Interrupt mask control
*/
union {
cc2538_reg_t IMR; /**< GPTIMER Interrupt Mask */
struct {
cc2538_reg_t TATOIM : 1; /**< GPTM Timer A time-out interrupt mask */
cc2538_reg_t CAMIM : 1; /**< GPTM Timer A capture match interrupt mask */
cc2538_reg_t CAEIM : 1; /**< GPTM Timer A capture event interrupt mask */
cc2538_reg_t RESERVED1 : 1; /**< Reserved bits */
cc2538_reg_t TAMIM : 1; /**< GPTM Timer A match interrupt mask */
cc2538_reg_t RESERVED2 : 3; /**< Reserved bits */
cc2538_reg_t TBTOIM : 1; /**< GPTM Timer B time-out interrupt mask */
cc2538_reg_t CBMIM : 1; /**< GPTM Timer B capture match interrupt mask */
cc2538_reg_t CBEIM : 1; /**< GPTM Timer B capture event interrupt mask */
cc2538_reg_t TBMIM : 1; /**< GPTM Timer B match interrupt mask */
cc2538_reg_t RESERVED3 : 20; /**< Reserved bits */
} IMRbits;
} cc2538_gptimer_imr;
cc2538_reg_t RIS; /**< GPTIMER Raw Interrupt Status */
cc2538_reg_t MIS; /**< GPTIMER Masked Interrupt Status */
cc2538_reg_t ICR; /**< GPTIMER Interrupt Clear */
cc2538_reg_t TAILR; /**< GPTIMER Timer A Interval Load */
cc2538_reg_t TBILR; /**< GPTIMER Timer B Interval Load */
cc2538_reg_t TAMATCHR; /**< GPTIMER Timer A Match */
cc2538_reg_t TBMATCHR; /**< GPTIMER Timer B Match */
cc2538_reg_t TAPR; /**< GPTIMER Timer A Prescale Register */
cc2538_reg_t TBPR; /**< GPTIMER Timer B Prescale Register */
cc2538_reg_t TAPMR; /**< GPTIMER Timer A Prescale Match Register */
cc2538_reg_t TBPMR; /**< GPTIMER Timer B Prescale Match Register */
cc2538_reg_t TAR; /**< GPTIMER Timer A */
cc2538_reg_t TBR; /**< GPTIMER Timer B */
cc2538_reg_t TAV; /**< GPTIMER Timer A Value */
cc2538_reg_t TBV; /**< GPTIMER Timer B Value */
cc2538_reg_t RESERVED3; /**< Reserved word */
cc2538_reg_t TAPS; /**< GPTIMER Timer A Prescale Snapshot */
cc2538_reg_t TBPS; /**< GPTIMER Timer B Prescale Snapshot */
cc2538_reg_t TAPV; /**< GPTIMER Timer A Prescale Value */
cc2538_reg_t TBPV; /**< GPTIMER Timer B Prescale Value */
cc2538_reg_t RESERVED[981]; /**< Reserved */
cc2538_reg_t PP; /**< GPTIMER Peripheral Properties */
cc2538_reg_t RESERVED4[15]; /**< Reserved */
} cc2538_gptimer_t;
/**
* @brief Base address of general-purpose timers (GPT)
*/
#define GPTIMER_BASE (0x40030000)
#define GPTIMER0 ( (cc2538_gptimer_t*)0x40030000 ) /**< GPTIMER0 Instance */
#define GPTIMER1 ( (cc2538_gptimer_t*)0x40031000 ) /**< GPTIMER1 Instance */
#define GPTIMER2 ( (cc2538_gptimer_t*)0x40032000 ) /**< GPTIMER2 Instance */
#define GPTIMER3 ( (cc2538_gptimer_t*)0x40033000 ) /**< GPTIMER3 Instance */
void isr_timer0_chan0(void); /**< RIOT Timer 0 Channel 0 Interrupt Service Routine */
void isr_timer0_chan1(void); /**< RIOT Timer 0 Channel 1 Interrupt Service Routine */
void isr_timer1_chan0(void); /**< RIOT Timer 1 Channel 0 Interrupt Service Routine */
void isr_timer1_chan1(void); /**< RIOT Timer 1 Channel 1 Interrupt Service Routine */
void isr_timer2_chan0(void); /**< RIOT Timer 2 Channel 0 Interrupt Service Routine */
void isr_timer2_chan1(void); /**< RIOT Timer 2 Channel 1 Interrupt Service Routine */
void isr_timer3_chan0(void); /**< RIOT Timer 3 Channel 0 Interrupt Service Routine */
void isr_timer3_chan1(void); /**< RIOT Timer 3 Channel 1 Interrupt Service Routine */
#ifdef __cplusplus
} /* end extern "C" */
#endif
#endif /* CC2538_GPTIMER_H */
/* @} */