/**************************************************************************//**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V3.00
* [url=home.php?mod=space&uid=247401]@brief[/url] Show how to set GPIO pin mode and use pin data input/output control.
*
* [url=home.php?mod=space&uid=17282]@CopyRight[/url] (C) 2019 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include <stdio.h>
#include "NuMicro.h"
void SYS_Init(void)
{
/* Set PF multi-function pins for XT1_OUT(PF.2) and XT1_IN(PF.3) */
SYS->GPF_MFPL = (SYS->GPF_MFPL & (~SYS_GPF_MFPL_PF2MFP_Msk)) | SYS_GPF_MFPL_PF2MFP_XT1_OUT;
SYS->GPF_MFPL = (SYS->GPF_MFPL & (~SYS_GPF_MFPL_PF3MFP_Msk)) | SYS_GPF_MFPL_PF3MFP_XT1_IN;
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Wait for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Select HCLK clock source as HIRC and HCLK clock divider as 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable HXT clock */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Wait for HXT clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Enable PLL */
CLK->PLLCTL = CLK_PLLCTL_128MHz_HIRC;
/* Waiting for PLL stable */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Select HCLK clock source as PLL and HCLK source divider as 2 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL, CLK_CLKDIV0_HCLK(2));
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART module clock source as HIRC and UART module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HIRC, CLK_CLKDIV0_UART0(1));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set multi-function pins for UART0 RXD and TXD */
SYS->GPB_MFPH = (SYS->GPB_MFPH & (~(UART0_RXD_PB12_Msk | UART0_TXD_PB13_Msk))) | UART0_RXD_PB12 | UART0_TXD_PB13;
}
void UART0_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART0 */
SYS_ResetModule(UART0_RST);
/* Configure UART0 and set UART0 baud rate */
UART_Open(UART0, 115200);
}
/*---------------------------------------------------------------------------------------------------------*/
/* Main Function */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
int32_t i32Err, i32TimeOutCnt;
/* Unlock protected registers */
SYS_UnlockReg();
/* Init System, peripheral clock and multi-function I/O */
SYS_Init();
/* Lock protected registers */
SYS_LockReg();
/* Init UART0 for printf */
UART0_Init();
printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %dHz\n", SystemCoreClock);
printf("+-------------------------------------------------+\n");
printf("| PB.3(Output) and PD.7(Input) Sample Code |\n");
printf("+-------------------------------------------------+\n\n");
/*-----------------------------------------------------------------------------------------------------*/
/* GPIO Basic Mode Test --- Use Pin Data Input/Output to control GPIO pin */
/*-----------------------------------------------------------------------------------------------------*/
printf(" >> Please connect PB.3 and PD.7 first << \n");
printf(" Press any key to start test by using [Pin Data Input/Output Control] \n\n");
getchar();
/* Configure PB.3 as Output mode and PD.7 as Input mode then close it */
GPIO_SetMode(PB, BIT3, GPIO_MODE_OUTPUT);
GPIO_SetMode(PD, BIT7, GPIO_MODE_INPUT);
i32Err = 0;
printf("GPIO PB.3(output mode) connect to PD.7(input mode) ......");
/* Use Pin Data Input/Output Control to pull specified I/O or get I/O pin status */
/* Set PB.3 output pin value is low */
PB3 = 0;
/* Set time out counter */
i32TimeOutCnt = 100;
/* Wait for PD.7 input pin status is low for a while */
while(PD7 != 0)
{
if(i32TimeOutCnt > 0)
{
i32TimeOutCnt--;
}
else
{
i32Err = 1;
break;
}
}
/* Set PB.3 output pin value is high */
PB3 = 1;
/* Set time out counter */
i32TimeOutCnt = 100;
/* Wait for PD.7 input pin status is high for a while */
while(PD7 != 1)
{
if(i32TimeOutCnt > 0)
{
i32TimeOutCnt--;
}
else
{
i32Err = 1;
break;
}
}
/* Print test result */
if(i32Err)
{
printf(" [FAIL].\n");
}
else
{
printf(" [OK].\n");
}
/* Configure PB.3 and PD.7 to default Quasi-bidirectional mode */
GPIO_SetMode(PB, BIT3, GPIO_MODE_QUASI);
GPIO_SetMode(PD, BIT7, GPIO_MODE_QUASI);
while(1);
}
/*** (C) COPYRIGHT 2019 Nuvoton Technology Corp. ***/
| 
楼主
标题置顶
标题高亮
怎么通过这个例程点亮灯啊，萌新小白在线求助，可以有偿教下吗