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IT IS THE USER' S RESPONSIBILITY TO VERIFY THE USER SOFTWARE DESIGN FOR CONSISTENCY AND FUNCTIONALITY THROUGH THE USE OF FORMAL SOFTWARE VALIDATION METHODS. ------------------------------------------------------------------ ================================================================== */ #ifndef GP_TIMER_H_ #define GP_TIMER_H_ #include #include #include enum GP_TIMER { GP_TIMER0 = 0, GP_TIMER1 = 1, GP_TIMER2, GP_TIMER3, GP_TIMER4, GP_TIMER5, GP_TIMER6, GP_TIMER7, GP_TIMER8, }; #define PRESCALER_RATIO_2 0 #define PRESCALER_RATIO_4 1 #define PRESCALER_RATIO_8 2 #define PRESCALER_RATIO_16 3 #define PRESCALER_RATIO_32 4 #define PRESCALER_RATIO_64 5 #define PRESCALER_RATIO_128 6 #define PRESCALER_RATIO_256 7 #define PRESCALER_RATIO_512 8 #define PRESCALER_RATIO_1024 9 #define PRESCALER_RATIO_2048 10 #define PRESCALER_RATIO_4096 11 #define PRESCALER_RATIO_8192 12 #define PRESCALER_RATIO_16384 13 #define PRESCALER_RATIO_32768 14 #define PRESCALER_RATIO_65536 15 #define PRESCALER_RATIO_131072 16 #define PRESCALER_RATIO_262144 17 #define PRESCALER_RATIO_524288 18 #define PRESCALER_RATIO_1048576 19 #define PRESCALER_RATIO_2097152 20 #define PRESCALER_RATIO_4194304 21 #define PRESCALER_RATIO_8388608 22 #define PRESCALER_RATIO_16777216 23 #define PRESCALER_RATIO_33554432 24 #define PRESCALER_RATIO_67108864 25 #define PRESCALER_RATIO_134217728 26 #define PRESCALER_RATIO_268435456 27 #define PRESCALER_RATIO_536870912 28 #define PRESCALER_RATIO_1073741824 29 #define PRESCALER_RATIO_2147483648 30 #define PRESCALER_RATIO_4294967296 31 struct timer_callback_entry { void (*timer_callback) (void *); // the registered timer callback function void *context; // the context of the callback }; struct timer_conf { uint16_t reload_value; unsigned char b_continue; }; struct gp_timer_instance{ //char *instance_name; unsigned int base_addr; unsigned int sys_clk; unsigned int timer_clk[GP_TIMER8]; unsigned char timer_num; unsigned int prescaler; struct timer_conf tc[GP_TIMER8]; struct timer_callback_entry callback_table[GP_TIMER8]; }; /* register definition */ #define TIMER_INT_EN 0x04 #define GLB_CTRL 0x0c #define TIMER_START 0x04 #define TIMER_DIR_COUNT_DOWD 0 #define TIMER_DIR_COUNT_UP 1 #define TIMER0_STATUS 0x10 #define TIMER0_CNT 0x1c #define TIMER1_CNT 0x2c #define TIMER2_CNT 0x3c #define TIMER3_CNT 0x4c #define TIMER0_PERIOD 0x18 #define TIMER0_CON 0x14 #define TIMER_INT 0x00 /*********************************************************************** * Initialize the general purpose timer IP * ***********************************************************************/ unsigned char gp_timer_init(struct gp_timer_instance *this_timer, unsigned int base_address, unsigned int clock, unsigned char gp_timer_cnt); /*********************************************************************** * Configure the timer * ***********************************************************************/ unsigned char gp_timer_config(struct gp_timer_instance *this_timer, unsigned char timer_src, bool continuous,uint32_t pscaler,uint8_t dir,uint16_t period); /*********************************************************************** * Get the snapshot of the specified timer * ***********************************************************************/ unsigned char gp_timer_snapshot_get(struct gp_timer_instance *this_timer, unsigned char timer_src, unsigned int *snapshot); /*********************************************************************** * Get the status of the specified timer * ***********************************************************************/ //unsigned char gp_timer_status_get(struct gp_timer_instance *this_timer, unsigned char timer_src, unsigned char* timer_status); /*********************************************************************** * Start/stop the specified timer * ***********************************************************************/ unsigned char gp_timer_start(struct gp_timer_instance *this_timer, unsigned char timer_src, void (*timer_callback) (void *), void *context); unsigned char gp_timer_stop(struct gp_timer_instance *this_timer, unsigned char timer_src); /*********************************************************************** * The interrupt service routine for timer * ***********************************************************************/ void gp_timer_isr(void *ctx); #endif