为何**作mini58的ADC寄存器全部是0.

发表于 2017-8-13 15:40

我在处理mini58的ADC,操作ADC->CHEN,ADC->STATUS,ADC->CTL几个寄存器都是0，我用的是Keil MDK5.23.
难道ADC的寄存器很特殊。
初始化
CLK_EnableModuleClock(ADC_MODULE);
   CLK_SetModuleClock(ADC_MODULE,CLK_CLKSEL1_ADCSEL_HIRC,CLK_CLKDIV_ADC(5));//用的片内晶振。

/* Set P5.3 to ADC channel 0 input pin */
SYS->P3_MFP |= SYS_MFP_P30_ADC_CH6;
SYS->P3_MFP |= SYS_MFP_P31_ADC_CH7;
   SYS->P1_MFP |= SYS_MFP_P14_ADC_CH4;
/* To update the variable SystemCoreClock */
   P3->DINOFF |= (1 << 0) << GP_DINOFF_DINOFF6_Pos;
P3->DINOFF |= (1 << 1) << GP_DINOFF_DINOFF7_Pos;
P1->DINOFF |= (1 << 4) << GP_DINOFF_DINOFF4_Pos;

// ADC->CHEN=BAadc_channel;
switch(BAadc_channel)
{
case 0:
ADC->CHEN=0x01;
break;
case 1:
   ADC->CHEN=0x02;
break;
case 2:
   ADC->CHEN=0x04;
break;
case 3:
   ADC->CHEN=0x08;
break;
case 4:
   ADC->CHEN=0x10;
break;
case 5:
   ADC->CHEN=0x20;
break;
case 6:
   ADC->CHEN=0x40;
break;
case 7:
   ADC->CHEN=0x80;
break;
case 8:
   ADC->CHEN=0x180;
break;
default:
break;
}

// Power on ADC
ADC_POWER_ON(ADC);

//ADC_SET_INPUT_CHANNEL(ADC,BAadc_channel);
   ADC_EnableInt(ADC, ADC_ADIF_INT);
NVIC_EnableIRQ(ADC_IRQn);
   if(!ADC_IS_BUSY(ADC)) {
         ADC_START_CONV(ADC);
      }

无论怎么操作ADC->CHEN,ADC->STATUS,ADC->CTL几个寄存器都是0，请高手指点迷津

发表于 2017-8-13 19:37

不是很懂，你看看官方的例程吧，我都是看着改。

发表于 2017-8-14 21:30

复制

/******************************************************************************

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00

 * $Revision: 2 $

 * $Date: 15/09/24 5:50p $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Demonstrate ADC function by repeatedly convert the input of ADC

 *           channel 5 (P1.5) and shows the result on UART console.

 *

 * @note

 * Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.

*****************************************************************************/

#include <stdio.h>

#include "Mini51Series.h"



void ADC_IRQHandler(void)

{

    uint32_t u32Flag;



    // Get ADC comparator interrupt flag

    u32Flag = ADC_GET_INT_FLAG(ADC, ADC_ADF_INT);



    // Get ADC convert result

    printf("Convert result is %x\n", (uint32_t)ADC_GET_CONVERSION_DATA(ADC, 0));



    ADC_CLR_INT_FLAG(ADC, u32Flag);

}





void SYS_Init(void)

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init System Clock                                                                                       */

    /*---------------------------------------------------------------------------------------------------------*/



    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Set P5 multi-function pins for XTAL1 and XTAL2 */

    SYS->P5_MFP = SYS_MFP_P50_XTAL1 | SYS_MFP_P51_XTAL2;



    /* Enable external 12MHz XTAL, HIRC */

    CLK->PWRCON = CLK_PWRCON_OSC22M_EN_Msk | CLK_PWRCON_HXT;



    /* Waiting for clock ready */

    CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk | CLK_CLKSTATUS_XTL_STB_Msk);



    /* Switch HCLK clock source to XTL */

    CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_XTAL,CLK_CLKDIV_HCLK(1));



    /* Enable IP clock */

    CLK_EnableModuleClock(UART_MODULE);

    CLK_EnableModuleClock(ADC_MODULE);



    /* Select IP clock source */

    CLK_SetModuleClock(UART_MODULE,CLK_CLKSEL1_UART_S_XTAL,CLK_CLKDIV_UART(1));

    CLK_SetModuleClock(ADC_MODULE,CLK_CLKSEL1_ADC_S_XTAL,CLK_CLKDIV_ADC(6));



    /*---------------------------------------------------------------------------------------------------------*/

    /* Init I/O Multi-function                                                                                 */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Set P0 multi-function pins for UART RXD, TXD */

    SYS->P0_MFP = SYS_MFP_P00_TXD | SYS_MFP_P01_RXD;



    /* Set P1 multi-function pin ADC channel 5 input*/

    SYS->P1_MFP = SYS_MFP_P15_AIN5;



    /* Analog pin OFFD to prevent leakage */

    P1->OFFD |= (1 << 5) << GPIO_OFFD_OFFD_Pos;



    /* To update the variable SystemCoreClock */

    SystemCoreClockUpdate();



    /* Lock protected registers */

    SYS_LockReg();

}



int32_t main (void)

{

    /* 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 UART to 115200-8n1 for print message */

    UART_Open(UART0, 115200);



    printf("\nThis sample code demonstrate ADC channel 5 conversion and printf the result on UART\n");



    // Enable channel 5

    ADC_Open(ADC, 0, 0, 0x01 << 5);



    // Power on ADC

    ADC_POWER_ON(ADC);





    // Enable ADC convert complete interrupt

    ADC_EnableInt(ADC, ADC_ADF_INT);

    NVIC_EnableIRQ(ADC_IRQn);



    while(1) {

        // Trigger ADC conversion if it is idle

        if(!ADC_IS_BUSY(ADC)) {

            ADC_START_CONV(ADC);

        }

    }



}



/*** (C) COPYRIGHT 2015 Nuvoton Technology Corp. ***/

发表于 2017-8-14 21:30

复制



/******************************************************************************

 * @file     main.c

 * @version  V1.00

 * $Revision: 6 $

 * $Date: 15/10/06 1:19p $

 * @brief    Demonstrate ADC conversion and comparison function by monitoring

 *           the conversion result of channel 0.

 *

 * @note

 * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.

*****************************************************************************/

#include <stdio.h>

#include "Mini51Series.h"





void ADC_IRQHandler(void)

{

    uint32_t u32Flag;



    // Get ADC comparator interrupt flag

    u32Flag = ADC_GET_INT_FLAG(ADC, ADC_CMP0_INT | ADC_CMP1_INT);



    if(u32Flag & ADC_CMP0_INT)

        printf("Channel 0 input < 0x200\n");

    if(u32Flag & ADC_CMP1_INT)

        printf("Channel 0 input >= 0x200\n");



    ADC_CLR_INT_FLAG(ADC, u32Flag);

}





void SYS_Init(void)

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init System Clock                                                                                       */

    /*---------------------------------------------------------------------------------------------------------*/



    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Set P5 multi-function pins for XTAL1 and XTAL2 */

    SYS->P5_MFP &= ~(SYS_MFP_P50_Msk | SYS_MFP_P51_Msk);

    SYS->P5_MFP |= (SYS_MFP_P50_XTAL1 | SYS_MFP_P51_XTAL2);



    /* Enable external 12MHz XTAL (UART), internal 22.1184MHz */

    CLK->PWRCON = CLK_PWRCON_XTL12M | CLK_PWRCON_IRC22M_EN_Msk;



    /* Waiting for clock ready */

    CLK_WaitClockReady(CLK_CLKSTATUS_XTL_STB_Msk | CLK_CLKSTATUS_IRC22M_STB_Msk);



    /* Enable UART and ADC clock */

    CLK->APBCLK = CLK_APBCLK_UART_EN_Msk | CLK_APBCLK_ADC_EN_Msk;



    /* Select UART clock source from external crystal*/

    CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART_S_Msk) | CLK_CLKSEL1_UART_S_XTAL;



    /* ADC clock source is 22.1184MHz, set divider to (3 + 1), ADC clock is 22.1184/4 MHz */

    CLK->CLKDIV |= (3 << CLK_CLKDIV_ADC_N_Pos);



    /* Update System Core Clock */

    /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock and CycylesPerUs automatically. */

    SystemCoreClockUpdate();





    /*---------------------------------------------------------------------------------------------------------*/

    /* Init I/O Multi-function                                                                                 */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Set P1 multi-function pins for UART RXD, TXD */

    SYS->P0_MFP = SYS_MFP_P00_TXD | SYS_MFP_P01_RXD;



    /* Set P5.3 to ADC channel 0 input pin */

    SYS->P5_MFP = SYS_MFP_P53_AIN0;

    /* Analog pin OFFD to prevent leakage */

    P5->OFFD |= (1 << 3) << GPIO_OFFD_OFFD_Pos;



    /* Lock protected registers */

    SYS_LockReg();

}





int32_t main (void)

{

    /* 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 UART to 115200-8n1 for print message */

    UART_Open(UART, 115200);



    printf("\nThis sample code demonstrate ADC conversion and comparison function\n");

    printf("by monitoring the conversion result of channel 0 (P5.3)\n");



    // Enable channel 0

    ADC_Open(ADC, 0, 0, 0x01);



    // Power on ADC

    ADC_POWER_ON(ADC);



    // Configure and enable Comparator 0 to monitor channel 0 input less than 0x200

    ADC_ENABLE_CMP0(ADC, 0, ADC_CMP_LESS_THAN, 0x200, 16);

    // Configure and enable Comparator 1 to monitor channel 0 input greater or equal to 0x200

    ADC_ENABLE_CMP1(ADC, 0, ADC_CMP_GREATER_OR_EQUAL_TO, 0x200, 16);



    // Enable ADC comparator 0 and 1 interrupt

    ADC_EnableInt(ADC, ADC_CMP0_INT);

    ADC_EnableInt(ADC, ADC_CMP1_INT);

    NVIC_EnableIRQ(ADC_IRQn);



    while(1) {

        // Trigger ADC conversion if it is idle

        if(!ADC_IS_BUSY(ADC)) {

            ADC_START_CONV(ADC);

        }

    }



}



/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/

发表于 2017-8-14 22:11

不要使用寄存器搞。

发表于 2017-8-14 22:31

mini51好像可以用PIN tool配置管脚

发表于 2017-8-14 22:32

[技术问答] 为何**作mini58的ADC寄存器全部是0.

相关帖子

浏览过的版块