/**************************************************************************//**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V2.10
* $Date: 15/04/08 4:36p $
* [url=home.php?mod=space&uid=247401]@brief[/url] Use GPIO driver to control the GPIO pin direction, control their
* high/low state, and how to use GPIO interrupts.
*
* @note
* Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include <stdio.h>
#include "NM1200_NM1100.h"
#include "GPIO.h"
/**
* @brief Port0/Port1 IRQ
*
* @param None
*
* [url=home.php?mod=space&uid=266161]@return[/url] None
*
* [url=home.php?mod=space&uid=1543424]@Details[/url] The Port0/Port1 default IRQ, declared in startup_NM1200_NM1100.s.
*/
void GPIO01_IRQHandler(void)
{
/* To check if P1.5 interrupt occurred */
if (P1->INTSRC & BIT5) {
P1->INTSRC = BIT5;
P30 = P30 ^ 1;
printf("P1.5 INT occurred. \n");
} else {
/* Un-expected interrupt. Just clear all PORT0, PORT1 interrupts */
P0->INTSRC = P0->INTSRC;
P1->INTSRC = P1->INTSRC;
printf("Un-expected interrupts. \n");
}
}
/**
* @brief Port2/Port3/Port4 IRQ
*
* @param None
*
* @return None
*
* @details The Port2/Port3/Port4 default IRQ, declared in startup_NM1200_NM1100.s.
*/
void GPIO234_IRQHandler(void)
{
/* To check if P2.2 interrupt occurred */
if (P2->INTSRC & BIT2) {
P2->INTSRC = BIT2;
P30 = P30 ^ 1;
printf("P2.2 INT occurred. \n");
} else {
/* Un-expected interrupt. Just clear all PORT2, PORT3 and PORT4 interrupts */
P2->INTSRC = P2->INTSRC;
P3->INTSRC = P3->INTSRC;
P4->INTSRC = P4->INTSRC;
printf("Un-expected interrupts. \n");
}
}
/**
* @brief External INT0 IRQ
*
* @param None
*
* @return None
*
* @details The External INT0(P3.2) default IRQ, declared in startup_NM1200_NM1100.s.
*/
void EINT0_IRQHandler(void)
{
/* For P3.2, clear the INT flag */
P3->INTSRC = BIT2;
P30 = P30 ^ 1;
printf("P3.2 EINT0 occurred. \n");
}
/**
* @brief External INT1 IRQ
*
* @param None
*
* @return None
*
* @details The External INT1(P5.2) default IRQ, declared in startup_NM1200_NM1100.s.
*/
void EINT1_IRQHandler(void)
{
/* For P5.2, clear the INT flag */
P5->INTSRC = BIT2;
P30 = P30 ^ 1;
printf("P5.2 EINT1 occurred. \n");
}
void SYS_Init(void)
{
/* Unlock protected registers */
SYS_UnlockReg();
/* Read User Config to select internal high speed RC */
SystemInit();
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC */
CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to XTL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_XTAL,CLK_CLKDIV_HCLK(1));
/* STCLK to XTL STCLK to HCLK/2 */
CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE,CLK_CLKSEL1_UART0SEL_HIRC,CLK_CLKDIV_UART(1));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set P0 multi-function pins for UART RXD and TXD */
SYS->P0_MFP &= ~(SYS_MFP_P01_Msk | SYS_MFP_P00_Msk);
SYS->P0_MFP |= (SYS_MFP_P01_RXD | SYS_MFP_P00_TXD);
/* Set P3 multi-function pins for Clock Output */
SYS->P3_MFP = SYS_MFP_P36_CKO;
/* To update the variable SystemCoreClock */
SystemCoreClockUpdate();
/* Lock protected registers */
SYS_LockReg();
}
void UART_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset IP */
SYS_ResetModule(SYS_IPRST1_UART0RST_Msk);
/* Configure UART and set UART Baudrate */
UART_Open(UART0, 115200);
}
/*---------------------------------------------------------------------------------------------------------*/
/* MAIN function */
/*---------------------------------------------------------------------------------------------------------*/
int main (void)
{
int32_t i32Err;
/* Init System, IP clock and multi-function I/O */
SYS_Init(); //In the end of SYS_Init() will issue SYS_LockReg() to lock protected register. If user want to write protected register, please issue SYS_UnlockReg() to unlock protected register.
/* Init UART for printf */
UART_Init();
printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %dHz\n", SystemCoreClock);
printf("+-------------------------------------+ \n");
printf("| GPIO Driver Sample Code | \n");
printf("+-------------------------------------+ \n");
/*-----------------------------------------------------------------------------------------------------*/
/* GPIO Basic Mode Test --- Use Pin Data Input/Output to control GPIO pin */
/*-----------------------------------------------------------------------------------------------------*/
printf(" >> Please connect P1.0 and P3.4 first << \n");
printf(" Press any key to start test by using [Pin Data Input/Output Control] \n\n");
getchar();
/* Configure P1.0 as Output mode and P3.4 as Input mode then close it */
GPIO_SetMode(P1, BIT0, GPIO_MODE_OUTPUT);
GPIO_SetMode(P3, BIT4, GPIO_MODE_INPUT);
i32Err = 0;
printf(" GPIO Output/Input test ...... \n");
/* Use Pin Data Input/Output Control to pull specified I/O or get I/O pin status */
P10 = 0;
if (P34 != 0) {
i32Err = 1;
}
P10 = 1;
if (P34 != 1) {
i32Err = 1;
}
if ( i32Err ) {
printf(" [FAIL] --- Please make sure P1.0 and P3.4 are connected. \n");
} else {
printf(" [OK] \n");
}
/* Configure P1.0 and P3.4 to default Quasi-bidirectional mode */
GPIO_SetMode(P1, BIT0, GPIO_MODE_QUASI);
GPIO_SetMode(P3, BIT4, GPIO_MODE_QUASI);
/*-----------------------------------------------------------------------------------------------------*/
/* GPIO Interrupt Function Test */
/*-----------------------------------------------------------------------------------------------------*/
printf("\n P15, P22, P32(INT0) and P52(INT1) are used to test interrupt\n and control LEDs(P30)\n");
/*Configure P30 for LED control */
GPIO_SetMode(P3, BIT0, GPIO_MODE_OUTPUT);
/* Configure P1.5 as Input mode and enable interrupt by rising edge trigger */
GPIO_SetMode(P1, BIT5, GPIO_MODE_INPUT);
GPIO_EnableInt(P1, 5, GPIO_INT_RISING);
NVIC_EnableIRQ(GPIO01_IRQn);
/* Configure P2.2 as Quasi-bidirection mode and enable interrupt by falling edge trigger */
GPIO_SetMode(P2, BIT2, GPIO_MODE_QUASI);
GPIO_EnableInt(P2, 2, GPIO_INT_FALLING);
NVIC_EnableIRQ(GPIO234_IRQn);
/* Configure P3.2 as EINT0 pin and enable interrupt by falling edge trigger */
GPIO_SetMode(P3, BIT2, GPIO_MODE_INPUT);
GPIO_EnableEINT0(P3, 2, GPIO_INT_FALLING);
NVIC_EnableIRQ(EINT0_IRQn);
/* Configure P5.2 as EINT1 pin and enable interrupt by rising and falling edge trigger */
GPIO_SetMode(P5, BIT2, GPIO_MODE_INPUT);
GPIO_EnableEINT1(P5, 2, GPIO_INT_BOTH_EDGE);
NVIC_EnableIRQ(EINT1_IRQn);
/* Enable interrupt de-bounce function and select de-bounce sampling cycle time */
GPIO_SET_DEBOUNCE_TIME(GPIO_DBNCECON_DBCLKSRC_HCLK, GPIO_DBNCECON_DBCLKSEL_1);
GPIO_ENABLE_DEBOUNCE(P1, BIT5);
GPIO_ENABLE_DEBOUNCE(P2, BIT2);
GPIO_ENABLE_DEBOUNCE(P3, BIT2);
GPIO_ENABLE_DEBOUNCE(P5, BIT2);
/* Waiting for interrupts */
while (1);
}
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