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_INIT
PEX_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_START
PEX_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);
}
