Hi Frederik,
CCU4 and CCU8 both can generate a period interrupt in capture mode.
As an example see below.
Please let us know if this solves your problem.
Regards,
Jesus
CCU4 and CCU8 both can generate a period interrupt in capture mode.
As an example see below.
Code:
#include <xmc_gpio.h>
#include <xmc_ccu4.h>
#define INPUT_PIN P1_2
const XMC_GPIO_CONFIG_t gpio_config =
{
.mode = XMC_GPIO_MODE_INPUT_PULL_UP
};
const XMC_CCU4_SLICE_EVENT_CONFIG_t event_config =
{
.mapped_input = CCU40_IN1_P1_2,
.edge = XMC_CCU4_SLICE_EVENT_EDGE_SENSITIVITY_FALLING_EDGE,
};
const XMC_CCU4_SLICE_CAPTURE_CONFIG_t capture_config =
{
.prescaler_initval = XMC_CCU4_SLICE_PRESCALER_32768
};
volatile uint32_t capture_time = 0;
volatile uint16_t overflow = 0;
void CCU40_1_IRQHandler(void)
{
capture_time = (overflow << 16) | (XMC_CCU4_SLICE_GetCaptureRegisterValue(CCU40_CC41, 0) & 0xffffU);
overflow = 0;
}
void CCU40_0_IRQHandler(void)
{
overflow++;
}
int main(void)
{
XMC_GPIO_Init(INPUT_PIN, &gpio_config);
XMC_CCU4_Init(CCU40, XMC_CCU4_SLICE_MCMS_ACTION_TRANSFER_PR_CR);
XMC_CCU4_SLICE_CaptureInit(CCU40_CC41, &capture_config);
XMC_CCU4_SLICE_Capture0Config(CCU40_CC41, XMC_CCU4_SLICE_EVENT_0);
XMC_CCU4_SLICE_ConfigureEvent(CCU40_CC41, XMC_CCU4_SLICE_EVENT_0, &event_config);
XMC_CCU4_EnableClock(CCU40, 1);
XMC_CCU4_SLICE_SetTimerPeriodMatch(CCU40_CC41, 0xffff);
XMC_CCU4_EnableShadowTransfer(CCU40, XMC_CCU4_SHADOW_TRANSFER_SLICE_1);
XMC_CCU4_SLICE_EnableMultipleEvents(CCU40_CC41, XMC_CCU4_SLICE_MULTI_IRQ_ID_PERIOD_MATCH | XMC_CCU4_SLICE_MULTI_IRQ_ID_EVENT0);
XMC_CCU4_SLICE_SetInterruptNode(CCU40_CC41, XMC_CCU4_SLICE_IRQ_ID_PERIOD_MATCH, 0);
XMC_CCU4_SLICE_SetInterruptNode(CCU40_CC41, XMC_CCU4_SLICE_IRQ_ID_EVENT0, 1);
NVIC_SetPriority(CCU40_0_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 63, 0));
NVIC_EnableIRQ(CCU40_0_IRQn);
NVIC_SetPriority(CCU40_1_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 62, 0));
NVIC_EnableIRQ(CCU40_1_IRQn);
XMC_CCU4_SLICE_StartTimer(CCU40_CC41);
/* Placeholder for user application code. The while loop below can be replaced with user application code. */
while(1U)
{
}
}Regards,
Jesus