MC100/Applications/bsp/at32/hall_tmr.c

#include "bsp/bsp_driver.h"
#include "libs/utils.h"
#include "libs/logger.h"
#include "hall_tmr.h"

void hall_tmr_init(void) {
	gpio_init_type gpio_init_struct = {0};
	tmr_input_config_type tmr_input_config_struct;
	
	crm_periph_clock_enable(HALL_TIMER_RCU, TRUE);
	crm_periph_clock_enable(HALL_A_RCU, TRUE);
	crm_periph_clock_enable(HALL_B_RCU, TRUE);
	crm_periph_clock_enable(HALL_C_RCU, TRUE);
	
	/* timer hall sensor pin Configuration */
	gpio_default_para_init(&gpio_init_struct);
	gpio_init_struct.gpio_pins = HALL_A_PIN;
	gpio_init_struct.gpio_mode = GPIO_MODE_INPUT;
	gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
	gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
	gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
	gpio_init(HALL_A_GROUP, &gpio_init_struct);
	
	gpio_init_struct.gpio_pins = HALL_B_PIN;
	gpio_init(HALL_B_GROUP, &gpio_init_struct);
	
	gpio_init_struct.gpio_pins = HALL_C_PIN;
	gpio_init(HALL_C_GROUP, &gpio_init_struct);
	
	/* remap hall timer input pins */
	gpio_pin_remap_config(HALL_CAPTURE_IOMUX, TRUE);
	
	/* timer hall interface configuration */
	tmr_base_init(HALL_TIMER, 0xFFFF, 0);
	tmr_cnt_dir_set(HALL_TIMER, TMR_COUNT_UP);
	
	/* config ti1 trc as input source */
	tmr_input_default_para_init(&tmr_input_config_struct);
	tmr_input_config_struct.input_channel_select = TMR_SELECT_CHANNEL_1;
	tmr_input_config_struct.input_mapped_select = TMR_CC_CHANNEL_MAPPED_STI;
	tmr_input_config_struct.input_polarity_select = TMR_INPUT_RISING_EDGE;
	tmr_input_config_struct.input_filter_value = 0xF;
	tmr_input_channel_init(HALL_TIMER, &tmr_input_config_struct, TMR_CHANNEL_INPUT_DIV_1);
	
	/* xor funtion enable */
	tmr_channel1_input_select(HALL_TIMER, TMR_CHANEL1_2_3_CONNECTED_C1IRAW_XOR);
	
	/* select the tmr input trigger: C1INC */
	tmr_trigger_input_select(HALL_TIMER, TMR_SUB_INPUT_SEL_C1INC);
	
	/* select the slave mode: reset mode */
	tmr_sub_mode_select(HALL_TIMER, TMR_SUB_RESET_MODE);
	
	/* clear interrupt flag of hall timer */
	tmr_flag_clear(HALL_TIMER, TMR_TRIGGER_FLAG | TMR_OVF_FLAG);
	
	/* enable overflow flag of hall timer */
	tmr_interrupt_enable(HALL_TIMER, TMR_TRIGGER_INT, TRUE);
	
	/* enable hall timer */
	tmr_counter_enable(HALL_TIMER, TRUE);

	nvic_irq_enable(HALL_TMR_IRQn, HALL_IRQ_PRIORITY, 0);
}

__weak void HALL_IRQHandler(void) {

}
void HALL_TMR_IRQHandler(void) {
	 if (tmr_flag_get(HALL_TIMER, TMR_TRIGGER_FLAG | TMR_C1_FLAG) != RESET) {
	 	tmr_flag_clear(HALL_TIMER, TMR_TRIGGER_FLAG | TMR_C1_FLAG | TMR_OVF_FLAG);
		HALL_IRQHandler();
	 }
}