imu_krooz_sd_arch.c

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#include "subsystems/imu.h"

#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/exti.h>
#include <libopencm3/cm3/nvic.h>

#include "subsystems/imu/imu_krooz_sd_arch.h"

void imu_krooz_sd_arch_init(void)
{
  rcc_periph_clock_enable(RCC_SYSCFG);
  rcc_periph_clock_enable(RCC_GPIOB);
  rcc_periph_clock_enable(RCC_GPIOB);
  gpio_mode_setup(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO5);
  gpio_mode_setup(GPIOC, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO6);

  nvic_enable_irq(NVIC_EXTI9_5_IRQ);
  exti_select_source(EXTI5, GPIOB);
  exti_select_source(EXTI6, GPIOC);
  exti_set_trigger(EXTI5, EXTI_TRIGGER_RISING);
  exti_set_trigger(EXTI6, EXTI_TRIGGER_FALLING);
  exti_enable_request(EXTI5);
  exti_enable_request(EXTI6);
  nvic_set_priority(NVIC_EXTI9_5_IRQ, 0x0F);
}

void exti9_5_isr(void)
{
  /* clear EXTI */
  if (EXTI_PR & EXTI6) {
    exti_reset_request(EXTI6);
    imu_krooz.hmc_eoc = TRUE;
  }
  if (EXTI_PR & EXTI5) {
    exti_reset_request(EXTI5);
    imu_krooz.mpu_eoc = TRUE;
  }
}