xc_drv_aotimer.c

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/*-----------------------------------------------------------------------------------
                                       INCLUDE HEADE FILES
 ------------------------------------------------------------------------------------*/
#include "xc_drv_aotimer.h"
 
/*------------------------------------------------------------------------------------
                                          Local Variables
 -------------------------------------------------------------------------------------*/
static bool aotimer_rst_flag                   = false;
 
/*------------------------------------------------------------------------------------
                                         Func Prototype
 -------------------------------------------------------------------------------------*/
aotimer_handler_callback aotimer_n_callback[2] = {aotimer0_callback,
                                                  aotimer1_callback};
 
/*------------------------------------------------------------------------------------
                                            Functions
 -------------------------------------------------------------------------------------*/
 
 
                                                  
void xc_aotimer_init(uint8_t reg_idx, AOTimer_InitCfg_t *init_cfg)
{
    if (aotimer_rst_flag == false) {
        cprao_aon_clken_grctl__timer_ao_pclk_en__setf(ENABLE);
        aotimer_rst_flag = true;
    }
    
    //The clocks for ao timer0 and ao timer1 need to be turned on at the same time.
    if (AOTIMER0_IDX == reg_idx) {
        cprao_aon_clken_grctl__timer0_ao_pclk_en__setf(ENABLE);
        cprao_aon_clken_grctl__timer1_ao_pclk_en__setf(ENABLE);
    } else if (AOTIMER1_IDX == reg_idx) {
        cprao_aon_clken_grctl__timer0_ao_pclk_en__setf(ENABLE);
        cprao_aon_clken_grctl__timer1_ao_pclk_en__setf(ENABLE);
    }
    cpr_lp_ctl__timer_sysclk_sel__setf(ENABLE);
 
    aotimer_tcr__tes__setf(reg_idx, DISABLE);
    aotimer_tcr__tms__setf(reg_idx, (uint8_t)init_cfg->aotimer_mode);
    (void)aotimer_tic__tic__getf(reg_idx);
}
 
 
 
 
static uint32_t xc_aotimer_us_to_ticks(uint32_t us)
{
    uint32_t ticks = AOTIMER_TICK_CAL(us);
 
    if (ticks < AOTIMER_MIN_TLC_VAL)
        ticks = AOTIMER_MIN_TLC_VAL;
 
    return ticks;
}
 
 
 
 
void xc_aotimer_set_value(uint8_t reg_idx, uint32_t us)
{
    uint32_t ticks = xc_aotimer_us_to_ticks(us);
 
    aotimer_tcr__tes__setf(reg_idx, AOTIMER_TCR_TES_DISABLE);
 
    aotimer_tlc_set(reg_idx, ticks);
}
 
 
 
void xc_aotimer_start(uint8_t reg_idx)
{
    NVIC_EnableIRQ( (IRQn_Type)(TIMER_AO0_IRQn+reg_idx) );   
    aotimer_tcr__tim__setf(reg_idx, 0);
    aotimer_tcr__tes__setf(reg_idx, ENABLE);
    // Wait for timer enable
    while(aotimer_tcr__tes__getf(reg_idx) != ENABLE)
    {
        __nop();
    }
}
 
void xc_aotimer_stop(uint8_t reg_idx)
{
    aotimer_tcr__tes__setf(reg_idx, DISABLE);
}
 
void AOTIMER0_Handler(void)
{
    cprao_aon_reg1__timer_ao_sleep_clksw__setf(0);
    (void)aotimer_tic__tic__getf(AOTIMER0_IDX);
    if (aotimer_n_callback[0] != NULL)
        aotimer_n_callback[0](NULL);
}
 
void AOTIMER1_Handler(void)
{
    cprao_aon_reg1__timer_ao_sleep_clksw__setf(0);
    (void)aotimer_tic__tic__getf(AOTIMER1_IDX);
    if (aotimer_n_callback[1] != NULL)
        aotimer_n_callback[1](NULL);
}
 
__WEAK void aotimer0_callback(void *context)
{ /* AOTimer0 中断回调处理事件 */
}
 
__WEAK void aotimer1_callback(void *context)
{ /* AOTimer1 中断回调处理事件 */
}