microchip-application-pec930-pec930_peripheral/Examples/gpio/gpio_interrupt/readme.md

GPIO Interrupt

This example is used to trig gpio interrupt.

• Select GPIO Port

  // in main.c
  /**
   *  Select Interrupt pin
   */
  #define GPIO_INPUT_PORTx        GPIOB
  #define GPIO_INPUT_PINx         GPIO_Pin_00
  #define CONFIG_GPIO_IRQ         GPIOB_IRQn
  

• Select GPIO interrupt trigger mode

  // in main.c
  /**
   *  Select Interrupt source
   */
  #define GPIO_INTERRUPT_TRIGGER  GPIO_Trigger_Level
  #define GPIO_INTERRUPT_POLARITY GPIO_Polarity_Low_Fall
  

Note-Log

Use serial port with baudrate 115200 8bit, no parity check.

• Select UART log pin

  // in syslog.c
  #define CONFIG_LOG_DEVICE_TX_IO_PORTx   GPIOA
  #define CONFIG_LOG_DEVICE_TX_IO_PINx    GPIO_Pin_15
  #define CONFIG_LOG_DEVICE_TX_IO_AF      GPIO_AF_1
  

• If you want to use PB1 as an interrupt, set IO to normal IO.(RST pin by default)

  SYSCFG_SetRstPin2NormalIO(true);   // set RST IO to normal IO
  

• If you want to use PB[2:5] as an interrupt, set IO to normal IO, and Restore IO to JTAG IO at the end.(JTAG pin by default)

  SYSCFG_SetICEPin2NormalIO(true);   // set JTAG IO to normal IO
  SYSCFG_SetICEPin2NormalIO(false);  // set normal IO to JTAG IO