本帖最后由 bailao99 于 2015-3-17 13:13 编辑

Working GPIO input interrupt demo for FRDM-K22F with Kenitis SDK V1.1.0

The following (after the "- - - - - -") is debugged code for showing SW2, and SW3 pressed  or not on the FRDM-K22F module. It is based on Kenitis SDK V1.1.0. It is built with Keil V5.13 and downloaded with JLINK SWD mode.

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#include <string.h>
#include <stdio.h>
#include "fsl_uart_hal.h"
#include "gpio_pins.h"
#include "fsl_clock_manager.h"
#include "fsl_port_hal.h"
#include "board.h"

volatile uint8_t switch_2_isr_entered = 0; // Variable to indicate that the SW2
volatile uint8_t switch_3_isr_entered = 0; // Variable to indicate that the SW3

gpio_input_pin_user_config_t Sw2Pins =
{
  .pinName = kGpioSW1,
  .config.isPullEnable = false,
  .config.pullSelect = kPortPullUp,
  .config.isPassiveFilterEnabled = false,
  .config.interrupt = kPortIntFallingEdge,
};

gpio_input_pin_user_config_t Sw3Pins =
{
  .pinName = kGpioSW2,
  .config.isPullEnable = false,
  .config.pullSelect = kPortPullUp,
  .config.isPassiveFilterEnabled = false,
  .config.interrupt = kPortIntFallingEdge,
};

int main(void)
{
  // init the hardware board
  hardware_init();
  // init the debug uart
  dbg_uart_init();
   
  /* PB17(Sw3Pin),PC1(Sw2Pin) as GPIO */
  PORT_HAL_SetMuxMode(PORTB_BASE,17u,kPortMuxAsGpio);
  PORT_HAL_SetMuxMode(PORTC_BASE,0u,kPortMuxAsGpio);

  // Initialize the GPIO pins  
  GPIO_DRV_InputPinInit(&Sw2Pins);
  GPIO_DRV_InputPinInit(&Sw3Pins);

  printf(" Hello World! ");
   
  for (;;)
  {
    if(1==switch_2_isr_entered)
    {
      switch_2_isr_entered = 0;
      printf(" SW2 Pressed! ");         
    }
    if(1==switch_3_isr_entered)
    {
      switch_3_isr_entered = 0;
      printf(" SW3 Pressed! ");         
    }
  }  
  return 0;
}

Prepare the Demo
1. Connect a USB cable between the PC host and the OpenSDA USB port on FRDM-K22F.
2. Open a serial terminal with these settings:
• 115200 baud rate
• 8 data bits
• No parity
• One stop bit
• No flow control
3. Download the program to FRDM-K22F board.
4. Either press the reset button on FRDM-K22F to begin running the demo.
5. Press SW2 switch or SW3 switch to check the result.
Here is output.
output.jpg (18.79 KB, 下载次数: 0) 下载附件 switch_interrupt_demo ouput 2015-3-17 05:30 上传
switch_interrupt_demo.zip (22.7 KB, 下载次数: 2) 2015-3-17 05:31 上传 点击文件名下载附件
switch_interrupt_demo.zip

Attention: My KSDK V1.1.0 path is D:KSDK_1.1.0. If your KSDK V1.1.0 path is not agree with me, the demo will not work  until the configuation in project options->C/C++->Include path,Linker->Scatter File, Linker->Misc controls is correct.