timer_driver.c

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#include "timer_driver.h"
 
static volatile uint32_t board_timer_ticks_ = 0U;
 
void board_timer_init(uint32_t timer_value_ms)
{
    Chip_RIT_Init(LPC_RITIMER);
    Chip_RIT_SetTimerInterval(LPC_RITIMER, timer_value_ms);
    board_timer_ticks_ = 0U;
 
    NVIC_ClearPendingIRQ(RITIMER_IRQn);
    NVIC_EnableIRQ(RITIMER_IRQn);
}
 
void board_timer_irq_handler(void)
{
    board_timer_ticks_++;
    Chip_RIT_ClearInt(LPC_RITIMER);
}
 
uint32_t board_timer_get_ticks(void)
{
    return board_timer_ticks_;
}