- /******************************************************************************
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V1.00
- * $Revision: 1 $
- * $Date: 15/04/07 2:48p $
- * [url=home.php?mod=space&uid=247401]@brief[/url] Show how to user divider API and how to use hardware divider
- * by control registers
- *
- * @note
- * Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.
- *****************************************************************************/
- #include <stdio.h>
- #include "NM1200_NM1100.h"
- void SYS_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Register write-protection disabled */
- SYS_UnlockReg();
- /* Read User Config to select internal high speed RC */
- SystemInit();
- /* Enable external 12MHz XTAL (UART), HIRC */
- CLK->PWRCTL = CLK_PWRCTL_XTL12M | CLK_PWRCTL_HIRCEN_Msk;
- /* Waiting for clock ready */
- CLK_WaitClockReady(CLK_STATUS_XTLSTB_Msk | CLK_STATUS_HIRCSTB_Msk);
- /* Switch HCLK clock source to XTL */
- CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_XTAL,CLK_CLKDIV_HCLK(1));
- /* Enable IP clock */
- CLK->APBCLK = CLK_APBCLK_UART0CKEN_Msk;
- /* Select UART clock source from external crystal*/
- CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART0SEL_Msk) | CLK_CLKSEL1_UART0SEL_XTAL;
- /* Update System Core Clock */
- /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock and CycylesPerUs automatically. */
- SystemCoreClockUpdate();
- /* Set P1 multi-function pins for UART RXD, TXD */
- SYS->P0_MFP = SYS_MFP_P00_TXD | SYS_MFP_P01_RXD;
- }
- void HDIV_Init(void)
- {
- /* Enable Hardware Divider Clock */
- CLK->AHBCLK |= CLK_AHBCLK_HDIVCKEN_Msk;
- }
- /*---------------------------------------------------------------------------------------------------------*/
- /* MAIN function */
- /*---------------------------------------------------------------------------------------------------------*/
- int main(void)
- {
- /* Disable register write-protection function */
- SYS_UnlockReg();
- /* Init System, IP clock and multi-function I/O */
- SYS_Init();
- /* Init UART to 115200-8n1 for print message */
- UART_Open(UART0, 115200);
- /* Enable Hardware Divider Clock */
- HDIV_Init();
- printf("+----------------------------------------------+\n");
- printf("| HDIV Divider Sample Code |\n");
- printf("+----------------------------------------------+\n");
- printf("\n");
- printf("12341 / 123 = %d\n", HDIV_Div(12341, 123));
- printf("12341 %% 123 = %d\n", HDIV_Mod(12341, 123));
- /* Lock protected registers */
- SYS_LockReg();
- printf("Done\n");
- /* Disabl Hardware Divider Clock */
- CLK->AHBCLK &= ~CLK_AHBCLK_HDIVCKEN_Msk;
- while(SYS->PDID);
- return 0;
- }
- /*** (C) COPYRIGHT 2015 Nuvoton Technology Corp. ***/
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