Hello experts,
I am working on i.mx93 cortex-m33 flexio, I am able to read HIGH/LOW status of pin, but when I configure my flexio pin interrupt on rising edge, and as soon as rising edge occurs cortex-m33 mcu just stuck up, so requesting to look into my problem.
/*
* Copyright 2022 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "pin_mux.h"
#include "clock_config.h"
#include "board.h"
#include "fsl_debug_console.h"
#include "fsl_flexio.h"
#include "fsl_iomuxc.h"
/*******************************************************************************
* Definitions
******************************************************************************/
#define BOARD_LED_FLEXIO FLEXIO1
#define BOARD_LED_FLEXIO_PIN 24U
volatile int x = 0;
void FLEXIO1_IRQHandler(void)
{
x++;
SDK_ISR_EXIT_BARRIER;
}
int main(void)
{
/* Define the init structure for the output LED pin*/
flexio_gpio_config_t led_config = {
kFLEXIO_DigitalInput,
0U,
kFLEXIO_InputInterruptEnable | kFLEXIO_FlagRisingEdgeEnable,
// kFLEXIO_InputInterruptDisabled,
};
flexio_config_t fxioUserConfig;
/* Board pin, clock, debug console init */
/* clang-format off */
const clock_root_config_t flexioClkCfg = {
.clockOff = false,
.mux = 0, /* 24MHz oscillator source */
.div = 1
};
/* clang-format on */
BOARD_InitBootPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
CLOCK_SetRootClock(kCLOCK_Root_Flexio1, &flexioClkCfg);
/* Print a note to terminal. */
PRINTF("\r\n 4. FLEXIO PIN Driver example\r\n");
PRINTF("\r\n The LED is taking turns to shine.\r\n");
/* Init flexio, use default configure
* Disable doze and fast access mode
* Enable in debug mode
*/
FLEXIO_GetDefaultConfig(&fxioUserConfig);
/* Reset the flexio to clear register*/
FLEXIO_Init(BOARD_LED_FLEXIO, &fxioUserConfig);
/* Init output LED FLEXIO. */
FLEXIO_SetPinConfig(BOARD_LED_FLEXIO, BOARD_LED_FLEXIO_PIN, &led_config);
while (1)
{
uint32_t pinstate = FLEXIO_PinRead(BOARD_LED_FLEXIO,BOARD_LED_FLEXIO_PIN);
PRINTF("x %d, pinstate %d\n\r", x, pinstate);
SDK_DelayAtLeastUs(1000000U, SystemCoreClock);
}
}
Above code works fine until input is low on this pin. As soon as when high voltage (rising edge) applied my program just stuck or I guess it is not coming out of ISR.
PS: If I read pin status without interrupt configuration, I am getting HIGH/LOW according to High/Low voltage on pin.
