官方例程是这样的,你直接修改那个通道就行了,看了一下,那些通道平行的。
- /**************************************************************************//**
- * [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: 15/07/14 4:36p $
- * [url=home.php?mod=space&uid=247401]@brief[/url] Convert ADC channel 0 in Single mode and print conversion results.
- *
- * @note
- * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
- *****************************************************************************/
- #include <stdio.h>
- #include "Nano1X2Series.h"
- volatile uint8_t u8ADF;
- void ADC_IRQHandler(void);
- void ADC_IRQHandler(void)
- {
- uint32_t u32Flag;
- // Get ADC conversion finish interrupt flag
- u32Flag = ADC_GET_INT_FLAG(ADC, ADC_ADF_INT);
- if(u32Flag & ADC_ADF_INT)
- u8ADF = 1;
- ADC_CLR_INT_FLAG(ADC, u32Flag);
- }
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- void SYS_Init(void)
- {
- /* Unlock protected registers */
- SYS_UnlockReg();
- /* Set HCLK source form HXT and HCLK source divide 1 */
- CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HXT,CLK_HCLK_CLK_DIVIDER(1));
- /* Enable external 12MHz HXT, 32KHz LXT and HIRC */
- CLK_EnableXtalRC(CLK_PWRCTL_HXT_EN_Msk | CLK_PWRCTL_LXT_EN_Msk | CLK_PWRCTL_HIRC_EN_Msk);
- /* Waiting for clock ready */
- CLK_WaitClockReady(CLK_CLKSTATUS_HXT_STB_Msk | CLK_CLKSTATUS_LXT_STB_Msk | CLK_CLKSTATUS_HIRC_STB_Msk);
- /* Set HCLK frequency 32MHz */
- CLK_SetCoreClock(32000000);
- /* Enable IP clock */
- CLK_EnableModuleClock(UART0_MODULE);
- CLK_EnableModuleClock(ADC_MODULE);
- /* Select IP clock source */
- CLK_SetModuleClock(UART0_MODULE,CLK_CLKSEL1_UART_S_HIRC,CLK_UART_CLK_DIVIDER(1));
- CLK_SetModuleClock(ADC_MODULE,CLK_CLKSEL1_ADC_S_HIRC,CLK_ADC_CLK_DIVIDER(5));
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set PA 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 );
- /* Set PB multi-function pins for Clock Output */
- SYS->PB_H_MFP = ( SYS->PB_H_MFP & ~SYS_PB_H_MFP_PB12_MFP_Msk ) | SYS_PB_H_MFP_PB12_MFP_CKO0;
- /* Set PA.0 multi-function pin for ADC channel 0 */
- SYS->PA_L_MFP = (SYS->PA_L_MFP & ~SYS_PA_L_MFP_PA0_MFP_Msk) | SYS_PA_L_MFP_PA0_MFP_ADC_CH0;
- /* Disable PA.0 digital input path */
- PA->OFFD |= ((1 << 0) << GP_OFFD_OFFD_Pos);
- /* Lock protected registers */
- SYS_LockReg();
- }
- void UART0_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init UART */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Reset IP */
- SYS_ResetModule(UART0_RST);
- /* Configure UART0 and set UART0 Baudrate */
- UART_Open(UART0, 115200);
- }
- int32_t main (void)
- {
- uint32_t u32Result;
- /* Init System, IP clock and multi-function I/O
- 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 if necessary */
- SYS_Init();
- /* Init UART0 for printf */
- UART0_Init();
- printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %dHz\n", SystemCoreClock);
- printf("\nThis sample code demonstrate ADC single mode conversion\n");
- printf("It convert channel 0 and print conversion result\n");
- // Enable channel 0
- ADC_Open(ADC, ADC_INPUT_MODE_SINGLE_END, ADC_OPERATION_MODE_SINGLE, ADC_CH_0_MASK);
- // Set reference voltage to AVDD
- ADC_SET_REF_VOLTAGE(ADC, ADC_REFSEL_POWER);
- // Power on ADC
- ADC_POWER_ON(ADC);
- // Enable ADC ADC_IF interrupt
- ADC_EnableInt(ADC, ADC_ADF_INT);
- NVIC_EnableIRQ(ADC_IRQn);
- u8ADF = 0;
- ADC_START_CONV(ADC);
- while (u8ADF == 0);
- u32Result = ADC_GET_CONVERSION_DATA(ADC, 0);
- printf("Channel 0 conversion result is 0x%x\n",u32Result);
- ADC_DisableInt(ADC, ADC_ADF_INT);
- while(1);
- }
- /*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
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