/**************************************************************************//**
* @file main.c
* @version V2.10
* $Date: 15/07/20 9:38a $
* @brief Use GPIO driver to control the GPIO pin direction and the high/low state,
* and show how to use GPIO interrupts.
*
* @note
* Copyright (C) 2012 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include <stdio.h>
#include "nano100series.h"
/**
* @brief PortA/PortB/PortC IRQ
*
* @param None
*
* @return None
*
* @Details The PortA/PortB/PortC default IRQ, declared in startup_nano100series.s.
*/
void GPABC_IRQHandler(void)
{
/* To check if PB.5 interrupt occurred */
if (PB->ISRC & BIT5) {
PB->ISRC = BIT5;
PD0 = PD0 ^ 1;
printf("PB.5 INT occurred. \n");
} else {
/* Un-expected interrupt. Just clear all PORTA, PORTB, PORTC interrupts */
PA->ISRC = PA->ISRC;
PB->ISRC = PB->ISRC;
PC->ISRC = PC->ISRC;
printf("Un-expected interrupts. \n");
}
}
/**
* @brief PortD/PortE/PortF IRQ
*
* @param None
*
* @return None
*
* @details The PortD/PortE/PortF default IRQ, declared in startup_nano100series.s.
*/
void GPDEF_IRQHandler(void)
{
/* To check if PE.2 interrupt occurred */
if (PE->ISRC & BIT2) {
PE->ISRC = BIT2;
PD0 = PD0 ^ 1;
printf("PE.2 INT occurred. \n");
} else {
/* Un-expected interrupt. Just clear all PORTD, PORTE and PORTF interrupts */
PD->ISRC = PD->ISRC;
PE->ISRC = PE->ISRC;
PF->ISRC = PF->ISRC;
printf("Un-expected interrupts. \n");
}
}
/**
* @brief External INT0 IRQ
*
* @param None
*
* @return None
*
* @details The External INT0(PA.2) default IRQ, declared in startup_nano100series.s.
*/
void EINT0_IRQHandler(void)
{
/* For PB.14, clear the INT flag */
PB->ISRC = BIT14;
PD0 = PD0 ^ 1;
printf("PB.14 EINT0 occurred. \n");
}
/**
* @brief External INT1 IRQ
*
* @param None
*
* @return None
*
* @details The External INT1(PF.2) default IRQ, declared in startup_Nano100series.s.
*/
void EINT1_IRQHandler(void)
{
/* For PB.15, clear the INT flag */
PB->ISRC = BIT15;
PD0 = PD0 ^ 1;
printf("PB.15 EINT1 occurred. \n");
}
void SYS_Init(void)
{
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable external 12MHz HXT */
CLK_EnableXtalRC(CLK_PWRCTL_HXT_EN_Msk);
CLK_EnablePLL(CLK_PLLCTL_PLL_SRC_HXT, 96000000);
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_CLKSTATUS_HXT_STB_Msk | CLK_CLKSTATUS_PLL_STB_Msk);
CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_PLL, CLK_HCLK_CLK_DIVIDER(3));
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_UART_CLK_DIVIDER(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PA multi-function pins for UART0 RXD and TXD */
// SYS->PA_H_MFP &= ~( SYS_PA_H_MFP_PA15_MFP_Msk | SYS_PA_H_MFP_PA14_MFP_Msk);
// SYS->PA_H_MFP |= (SYS_PA_H_MFP_PA15_MFP_UART0_TX|SYS_PA_H_MFP_PA14_MFP_UART0_RX);
SYS->PB_L_MFP &= ~( SYS_PB_L_MFP_PB0_MFP_Msk | SYS_PB_L_MFP_PB1_MFP_Msk);
SYS->PB_L_MFP |= (SYS_PB_L_MFP_PB1_MFP_UART0_TX|SYS_PB_L_MFP_PB0_MFP_UART0_RX);
/* Lock protected registers */
SYS_LockReg();
}
void UART0_Init(void)
{
/* Reset IP */
SYS_ResetModule(UART0_RST);
UART0->BAUD = 0x67; /* Baud Rate:115200 OSC:12MHz */
UART0->TLCTL = 0x03; /* Character len is 8 bits */
}
/*---------------------------------------------------------------------------------------------------------*/
/* 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 */
UART0_Init();
printf("\n\nCPU @ %dHz\n", SystemCoreClock);
printf("+--------------------------------------+ \n");
printf("| NANO100 GPIO Driver Sample Code | \n");
printf("+--------------------------------------+ \n");
/*-----------------------------------------------------------------------------------------------------*/
/* GPIO Basic Mode Test --- Use Pin Data Input/Output to control GPIO pin */
/*-----------------------------------------------------------------------------------------------------*/
printf(" >> Please connect PA.0 and PA.1 first << \n");
printf(" Press any key to start test by using [Pin Data Input/Output Control] \n\n");
getchar();
/* Configure PA.0 as Output mode and PA.1 as Input mode then close it */
GPIO_SetMode(PA, BIT0, GPIO_PMD_OUTPUT);
GPIO_SetMode(PA, BIT1, GPIO_PMD_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 */
PA0 = 0;
CLK_SysTickDelay(10); /* wait for IO stable */
if (PA1 != 0) {
i32Err = 1;
}
PA0 = 1;
CLK_SysTickDelay(10); /* wait for IO stable */
if (PA1 != 1) {
i32Err = 1;
}
if ( i32Err ) {
printf(" [FAIL] --- Please make sure PA.0 and PA.1 are connected. \n");
} else {
printf(" [OK] \n");
}
/* Configure PA.0 and PA.1 to default Input mode */
GPIO_SetMode(PA, BIT0, GPIO_PMD_INPUT);
GPIO_SetMode(PA, BIT1, GPIO_PMD_INPUT);
/*-----------------------------------------------------------------------------------------------------*/
/* GPIO Interrupt Function Test */
/*-----------------------------------------------------------------------------------------------------*/
printf("\n GPB5, GPE2, GPB14(EINT0) and GPB15(EINT1) are used to test interrupt\n and control LED (GPA7)\n");
/*Configure PA7 for LED control */
GPIO_SetMode(PA, BIT7, GPIO_PMD_OUTPUT);
/* Configure PB5 as Input mode and enable interrupt by rising edge trigger */
GPIO_SetMode(PB, BIT5, GPIO_PMD_INPUT);
GPIO_ENABLE_PULL_UP(PB, BIT5);
GPIO_EnableInt(PB, 5, GPIO_INT_RISING);
NVIC_EnableIRQ(GPABC_IRQn);
/* Configure PE2 as Input mode pull-up and enable interrupt by low level trigger */
GPIO_SetMode(PE, BIT2, GPIO_PMD_INPUT);
GPIO_ENABLE_PULL_UP(PE, BIT2);
GPIO_EnableInt(PE, 2, GPIO_INT_LOW);
NVIC_EnableIRQ(GPDEF_IRQn);
/* Configure PB14 as EINT0 pin and enable interrupt by falling edge trigger */
SYS->PB_H_MFP = (SYS->PB_H_MFP & (~0x07000000)) | 0x01000000;
GPIO_SetMode(PB, BIT14, GPIO_PMD_INPUT);
GPIO_EnableEINT0(PB, 14, GPIO_INT_FALLING);
NVIC_EnableIRQ(EINT0_IRQn);
/* Configure PB15 as EINT1 pin and enable interrupt by rising and falling edge trigger */
SYS->PB_H_MFP = (SYS->PB_H_MFP & (~0x70000000)) | 0x10000000;
GPIO_SetMode(PB, BIT15, GPIO_PMD_INPUT);
GPIO_EnableEINT1(PB, 15, 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_DBCLKSRC_HCLK, GPIO_DBCLKSEL_1);
GPIO_ENABLE_DEBOUNCE(PB, BIT5);
GPIO_ENABLE_DEBOUNCE(PE, BIT2);
GPIO_ENABLE_DEBOUNCE(PB, BIT14);
GPIO_ENABLE_DEBOUNCE(PB, BIT15);
/* Waiting for interrupts */
while (1);
}
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