- /******************************************************************************
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V1.00
- * $Revision: 11 $
- * $Date: 15/06/23 1:37p $
- * [url=home.php?mod=space&uid=247401]@brief[/url] Sample code which implements a function to test system state before
- * entering power-down mode. If a system consumes more power than
- * expected in power-down mode, this function can be used to check if
- * there is any system setting that may cause power leakage.
- *
- * @note
- * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
- *****************************************************************************/
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <stdint.h>
- #include "Nano1X2Series.h"
- #include "sys.h"
- #ifdef __DEBUG_MSG
- #define DEBUG_MSG printf
- #else
- #define DEBUG_MSG(...)
- #endif
- /* External functions */
- /* Global variables */
- __IO int32_t _Wakeup_Flag = 0; /* 1 indicates system wake up from power down mode */
- __IO uint32_t _Pin_Setting[11]; /* store Px_H_MFP and Px_L_MFP */
- __IO uint32_t _PullUp_Setting[6]; /* store GPIOx_PUEN */
- /**
- * @brief Store original setting of multi-function pin selection.
- * @param None.
- * [url=home.php?mod=space&uid=266161]@return[/url] None.
- */
- void SavePinSetting()
- {
- /* Save Pin selection setting */
- _Pin_Setting[0] = SYS->PA_L_MFP;
- _Pin_Setting[1] = SYS->PA_H_MFP;
- _Pin_Setting[2] = SYS->PB_L_MFP;
- _Pin_Setting[3] = SYS->PB_H_MFP;
- _Pin_Setting[4] = SYS->PC_L_MFP;
- _Pin_Setting[5] = SYS->PC_H_MFP;
- _Pin_Setting[6] = SYS->PD_L_MFP;
- _Pin_Setting[7] = SYS->PD_H_MFP;
- _Pin_Setting[8] = SYS->PE_L_MFP;
- _Pin_Setting[9] = SYS->PE_H_MFP;
- _Pin_Setting[10] = SYS->PF_L_MFP;
- /* Save Pull-up setting */
- _PullUp_Setting[0] = PA->PUEN;
- _PullUp_Setting[1] = PB->PUEN;
- _PullUp_Setting[2] = PC->PUEN;
- _PullUp_Setting[3] = PD->PUEN;
- _PullUp_Setting[4] = PE->PUEN;
- _PullUp_Setting[5] = PF->PUEN;
- }
- /**
- * @brief Save multi-function pin setting and then go to power down.
- * @param None.
- * @return None.
- */
- void Enter_PowerDown()
- {
- /* Back up original setting */
- SavePinSetting();
- /* Set function pin to GPIO mode */
- SYS->PA_L_MFP = 0;
- SYS->PA_H_MFP = 0;
- SYS->PB_L_MFP = 0;
- //SYS->PB_H_MFP = 0;
- SYS->PB_H_MFP = (SYS_PB_H_MFP_PB13_MFP_UART0_RX | SYS_PB_H_MFP_PB14_MFP_UART0_TX);
- SYS->PC_L_MFP = 0;
- SYS->PC_H_MFP = 0;
- SYS->PD_L_MFP = 0;
- SYS->PD_H_MFP = 0;
- SYS->PE_L_MFP = 0;
- SYS->PE_H_MFP = 0;
- //SYS->PF_L_MFP = 0x0000FF00; // exclude GPF3:HXT_OUT, GPF2:HXT_IN
- SYS->PF_L_MFP = 0x00FFFF00; // exclude GPF5:ICE_DAT, GPF4:ICE_CLK, GPF3:HXT_OUT, GPF2:HXT_IN
- /* Enable GPIO pull up */
- PA->PUEN = 0xFFFF;
- PB->PUEN = 0xFFFF;
- PC->PUEN = 0xFFFF;
- PD->PUEN = 0xFFFF;
- PE->PUEN = 0xFFFF;
- //PF->PUEN = 0x0033; /* exclude GPF3 and GPF2 which are HXT OUT/IN */
- PF->PUEN = 0x0003; /* exclude GPF5:ICE_DAT, GPF4:ICE_CLK, GPF3:HXT_OUT, GPF2:HXT_IN */
- //CLK->PWRCTL |= CLK_PWRCTL_PD_WK_IE_Msk; /* Enable wake up interrupt source */
- //NVIC_EnableIRQ(PDWU_IRQn); /* Enable IRQ request for PDWU interrupt */
- SYS_UnlockReg();
- SCB->SCR = SCB_SCR_SLEEPDEEP_Msk;
- CLK->PWRCTL |= (CLK_PWRCTL_PD_EN_Msk | CLK_PWRCTL_WK_DLY_Msk );
- //__WFI(); /* system really enter power down here ! */
- }
- void PowerDown_Check()
- {
- uint32_t i,j;
- volatile uint32_t Tmp_NVIC_ISER;
- uint32_t gpio_error_count = 0;
- char *symbo_gpio[6] = {"A", "B", "C", "D", "E", "F"};
- GPIO_T *tGPIO;
- uint32_t SYS_MFP = 0xffffffff;
- printf("\n/***** PowerDown Check *****/");
- printf("\n/***** GPIO Check: *****/");
- //save NVIC setting
- Tmp_NVIC_ISER = NVIC->ISER[0];
- //disables a device-specific interrupt in the NVIC interrupt controller
- NVIC->ICER[0] = 0xFFFFFFFF;
- for(j = 0; j < 11; j++) {
- SYS_MFP = *((volatile unsigned int *)(SYS_BASE + 0x30 + (j *4)));
- for(i = 0; i < 8; i++) {
- if(SYS_MFP & (0x7 << (i*4))) {
- gpio_error_count++;
- printf("\nGP%s Pin %d not set GPIO !!", symbo_gpio[(j/2)], (i+(8*(j%2))) );
- }
- }
- }
- if( (SYS->PF_L_MFP & SYS_PF_L_MFP_PF2_MFP_XT1_IN) != SYS_PF_L_MFP_PF2_MFP_XT1_IN) {
- printf("\nGPF Pin 2 not set HXT_OUT !!!");
- printf("\nPlease Check GPF Pin 2 not connect crystal !!!");
- }
- if( (SYS->PF_L_MFP & SYS_PF_L_MFP_PF3_MFP_XT1_OUT) != SYS_PF_L_MFP_PF3_MFP_XT1_OUT) {
- printf("\nGPF Pin 3 not set HXT_IN !!!");
- printf("\nPlease Check GPF Pin 3 not connect crystal !!!");
- }
- for(j = 0; j < 6; j++) {
- tGPIO =(GPIO_T*)((uint32_t)PA + (j * (0x40)));
- for(i = 0; i < 16; i++) {
- if((j == 4) & (i > 9)) // GPE
- break;
- if((j == 5) & (i > 5)) // GPF
- break;
- if(!(tGPIO->PIN & (1 << i))) {
- gpio_error_count++;
- printf("\nGP%s Pin %d can not pull high!!", symbo_gpio[j], i);
- }
- }
- }
- if(gpio_error_count)
- printf("\nGPIO Check fail !!");
- else
- printf("\nGPIO Check pass");
- printf("\n");
- printf("\n/***** Clock Check: *****/");
- if(CLK->PWRCTL & CLK_PWRCTL_HXT_EN)
- printf("\nHXT Enable");
- else
- printf("\nHXT Disable");
- if(CLK->PWRCTL & CLK_PWRCTL_LXT_EN)
- printf("\nLXT Enable");
- else
- printf("\nLXT Disable");
- if(CLK->PWRCTL & CLK_PWRCTL_HIRC_EN)
- printf("\nHIRC Enable");
- else
- printf("\nHIRC Disable");
- if(CLK->PWRCTL & CLK_PWRCTL_LIRC_EN)
- printf("\nLIRC Enable");
- else
- printf("\nLIRC Disable");
- printf("\n");
- printf("\n/***** Power Down setting check: *****/");
- if(CLK->PWRCTL & CLK_PWRCTL_PWRDOWN_EN)
- printf("\nChip Power-down mode Enable ");
- else
- printf("\nChip Power-down mode Disable !!!");
- if(SCB->SCR & 0x04)
- printf("\nSCB->SCR set (0x%x) : ok", SCB->SCR);
- else
- printf("\nSCB->SCR set (0x%x) : error", SCB->SCR);
- //Restore NVIC->ISER setting
- NVIC->ISER[0] = Tmp_NVIC_ISER;
- printf("\n");
- printf("\n/***** Wake-up setting check: *****/");
- if(CLK->PWRCTL & CLK_PWRCTL_DELY_EN)
- printf("\nWake-up Delay Counter Enable");
- else
- printf("\nWake-up Delay Counter Disable");
- if(CLK->PWRCTL & CLK_PWRCTL_WAKEINT_EN)
- printf("\nPower-down Mode Wake-up Interrupt Enable");
- else
- printf("\nPower-down Mode Wake-up Interrupt Disable");
- if( NVIC->ISER[0] & (1 << ((uint32_t)(PDWU_IRQn) & 0x1F)) )
- printf("\nEnable PDWU_IRQn request for PDWU interrupt");
- else
- printf("\nDisable PDWU_IRQn request for PDWU interrupt");
- printf("\n");
- printf("\n/***** ISR check: *****/");
- if(NVIC_GetPendingIRQ(PDWU_IRQn))
- printf("\nPowerDown WakeUp Interrupt status is pending. (check fail)");
- else
- printf("\nPowerDown WakeUp Interrupt status is not pending. (check ok)");
- if(CLK->WK_INTSTS & 0x1)
- printf("\nWake-up Interrupt Status is set. (check fail)");
- else
- printf("\nWake-up Interrupt Status is not set. (check ok)");
- printf("\n");
- printf("\n/***** PowerDown Check End *****/");
- }
- void SYS_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Unlock protected registers */
- SYS_UnlockReg();
- /* Enable IP clock */
- CLK->APBCLK |= CLK_APBCLK_UART0_EN; // UART0 Clock Enable
- /* Select IP clock source */
- CLK->CLKSEL1 &= ~CLK_CLKSEL1_UART_S_Msk;
- CLK->CLKSEL1 |= (0x3 << CLK_CLKSEL1_UART_S_Pos);// Clock source from HIRC
- /* Update System Core Clock */
- /* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */
- SystemCoreClockUpdate();
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set PB multi-function pins for UART0 RXD and TXD */
- 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_PB0_MFP_UART0_TX|SYS_PB_L_MFP_PB1_MFP_UART0_RX);
- /* Lock protected registers */
- SYS_LockReg();
- }
- void UART0_Init()
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init UART */
- /*---------------------------------------------------------------------------------------------------------*/
- UART_Open(UART0, 115200);
- }
- /**
- * @brief Main routine.
- * @param None.
- * @return None.
- */
- int32_t main(void)
- {
- SYS_Init();
- UART0_Init();
- /* Prepare to enter power down mode, to demo the usage of PowerDown_Check(),
- this function does not actually put this system to power down mode */
- Enter_PowerDown();
- /* Check system state before enter power down mode */
- PowerDown_Check();
- }
- /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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