LPC54110学习+按键控制灯

lkl0305 · 发表于 2017-4-7 11:30:22

接下来练习一下KEY0控制LED0，每次按下一次KEY0，LED0状态取反一次。
首先查看一下电路，LED0接pio0_15，KEY0接pio1_8。
QQ截图20170407112531.png

使用配置工具建立工程。
QQ截图20170407112024.png

设置引脚。

设置时钟。

完成程序。

/**
* This is template for main module created by MCUXpresso Project Generator. Enjoy!
**/
#include "board.h"
#include "pin_mux.h"
#include "clock_config.h"
#include "fsl_gpio.h"
/*!
* @brief Application entry point.
*/
int main(void) {
/* Init board hardware. */
BOARD_InitBootPins();
BOARD_InitBootClocks();
BOARD_InitDebugConsole();
#ifdef SDK_PRIMARY_CORE
BOARD_StartSecondaryCore();
#endif
/* Add your code here */
gpio_pin_config_t led0Config = {
kGPIO_DigitalOutput,
0,
};
gpio_pin_config_t key0Config = {
kGPIO_DigitalInput,
0,
};
CLOCK_EnableClock(kCLOCK_Gpio0);
CLOCK_EnableClock(kCLOCK_Gpio1);
GPIO_PinInit(BOARD_INITPINS_LED0_GPIO, BOARD_INITPINS_LED0_PORT, BOARD_INITPINS_LED0_GPIO_PIN, &led0Config);
GPIO_PinInit(BOARD_INITPINS_KEY0_GPIO, BOARD_INITPINS_KEY0_PORT, BOARD_INITPINS_KEY0_GPIO_PIN, &key0Config);
for(;;) { /* Infinite loop to avoid leaving the main function */
// __asm("NOP"); /* something to use as a breakpoint stop while looping */
if ((GPIO_ReadPinsInput(BOARD_INITPINS_KEY0_GPIO, BOARD_INITPINS_KEY0_PORT) & (1U << BOARD_INITPINS_KEY0_GPIO_PIN)) != (1U << BOARD_INITPINS_KEY0_GPIO_PIN))
{
GPIO_TogglePinsOutput(BOARD_INITPINS_LED0_GPIO, BOARD_INITPINS_LED0_PORT, 1U << BOARD_INITPINS_LED0_GPIO_PIN);
do
{
;
} while ((GPIO_ReadPinsInput(BOARD_INITPINS_KEY0_GPIO, BOARD_INITPINS_KEY0_PORT) & (1U << BOARD_INITPINS_KEY0_GPIO_PIN)) != (1U << BOARD_INITPINS_KEY0_GPIO_PIN));
}
}
}

复制代码

编译下载，每次按下一次KEY0，LED0状态取反一次。
QQ截图20170407112259.png

完整工程：

KEY0_MCUXpressoIDE_Project_cm4.rar (4.72 MB, 下载次数: 13)

jackten · 发表于 2017-4-7 12:00:23

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