程序初始化前线使用Components工具对时钟和GPIO进行配置，然后再main函数里面初始化。

时钟配置参考：

S32K144之时钟配置 - 明明1109 - 博客园 (cnblogs.com)

gpio配置

S32K SDK使用详解之PinSettings组件配置与使用详解(S32K1xx PORT 和GPIO模块)_嵌入式与汽车电子开发-商业新知 (shangyexinzhi.com)

1，S32K144编程第一步先初始化时钟

/* Initialize and configure clocks* 	-	see clock manager component for details*/CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT,g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);

2，初始化GPIO 

PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr); //初始化IO

初始化之后就可以，在程序用调用相关GPIO的驱动程序了。

int main(void)
{/* Write your local variable definition here *//*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/#ifdef PEX_RTOS_INITPEX_RTOS_INIT();                   /* Initialization of the selected RTOS. Macro is defined by the RTOS component. */#endif/*** End of Processor Expert internal initialization.                    ***//* Write your code here *///  WDOG_disable();/* Disable Watchdog in case it is not done in startup code *//* Initialize and configure clocks* 	-	see clock manager component for details*/CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT,g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr); //初始化IO/* Output direction for LED0 & LED1 */// PINS_DRV_SetPinsDirection(GPIO_PORT, (1 << LED1));/* Set Output value LED0 & LED1 *///PINS_DRV_SetPins(GPIO_PORT, 1 << LED1);LPUART_DRV_Init(INST_LPUART0, &lpuart0_State, &lpuart0_InitConfig0); //初始化串口// PINS_DRV_ClearPins(GPIO_PORT, 1 << LED2);/* For example: for(;;) { } */while(1){// PINS_DRV_SetPins(PTA,1<<15);//将PTA15设置为高/* Toggle output value LED0 & LED1 *///PINS_DRV_TogglePins(GPIO_PORT, ((1 << LED1)));LED0(0);delay_ms(1000);LED0(1);delay_ms(1000);u0_printf("KEY1 按下\r\n");//PINS_DRV_ClearPins(PTA,1<<15);//将PTA15设置为低//PINS_DRV_ClearPins(PTE,1<<6);//将PTE6设置为低}/*** Don't write any code pass this line, or it will be deleted during code generation. ***//*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/#ifdef PEX_RTOS_STARTPEX_RTOS_START();                  /* Startup of the selected RTOS. Macro is defined by the RTOS component. */#endif/*** End of RTOS startup code.  ***//*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/for(;;) {if(exit_code != 0) {break;}}return exit_code;/*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/
} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

3，常用函数介绍

1，初始化函数
/*FUNCTION************************************************************************ Function Name : PINS_DRV_Init* Description   : This function configures the pins with the options provided* in the given structure.** Implements    : PINS_DRV_Init_Activity*END**************************************************************************/
status_t PINS_DRV_Init(uint32_t pinCount,const pin_settings_config_t config[])
{uint32_t i;for (i = 0U; i < pinCount; i++){PINS_Init(&config[i]);}return STATUS_SUCCESS;
}2，将GPIO输出置高
/*FUNCTION************************************************************************ Function Name : PINS_DRV_SetPins* Description   : This function configures output pins listed in parameter pins (bits that are* '1') to have a value of 'set' (HIGH). Pins corresponding to '0' will be* unaffected.** Implements    : PINS_DRV_SetPins_Activity*END**************************************************************************/
void PINS_DRV_SetPins(GPIO_Type * const base,pins_channel_type_t pins)
{PINS_GPIO_SetPins(base, pins);
}3，将GPIO输出置低
/*FUNCTION************************************************************************ Function Name : PINS_DRV_ClearPins* Description   : This function configures output pins listed in parameter pins (bits that are* '1') to have a 'cleared' value (LOW). Pins corresponding to '0' will be* unaffected.** Implements    : PINS_DRV_ClearPins_Activity*END**************************************************************************/
void PINS_DRV_ClearPins(GPIO_Type * const base,pins_channel_type_t pins)
{PINS_GPIO_ClearPins(base, pins);
}4，将GPIO状态输出反转
/*FUNCTION************************************************************************ Function Name : PINS_DRV_TogglePins* Description   : This function toggles output pins listed in parameter pins (bits that are* '1'). Pins corresponding to '0' will be unaffected.** Implements    : PINS_DRV_TogglePins_Activity*END**************************************************************************/
void PINS_DRV_TogglePins(GPIO_Type * const base,pins_channel_type_t pins)
{PINS_GPIO_TogglePins(base, pins);
}5，输入时，读取GPIO状态
/*FUNCTION************************************************************************ Function Name : PINS_DRV_ReadPins* Description   : This function returns the current input values from a port. Only pins* configured as input will have meaningful values.** Implements    : PINS_DRV_ReadPins_Activity*END**************************************************************************/
pins_channel_type_t PINS_DRV_ReadPins(const GPIO_Type * const base)
{return PINS_GPIO_ReadPins(base);
}

/* Initialize pins
   *    -    See PinSettings component for more info
 */

 //GPIO初始化
  PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);

  /* Output direction for LED0 & LED1 */
  PINS_DRV_SetPinsDirection(PTA, (1 << 15)|(1 << 14));

  /* Set Output value LED0 & LED1 */
  PINS_DRV_SetPins(PTA, (1 << 15)|(1 << 14));  
  PINS_DRV_ClearPins(PTA, (1 << 15)|(1 << 14));

        uint32_t gpio_state=PINS_DRV_ReadPins(PTD);if(gpio_state&((1<<8)|(1<<9)|(1<<10)|(1<<11)|(1<<12)))//5个引脚输入口{PINS_DRV_ClearPins(PTA, 1 << 15);}else{PINS_DRV_SetPins(PTA, 1 << 15);}