M051 ADC模数转换程序; ADC模数转换的程序
时间：2024-06-23 发布者：
奥德赛
ADC模数转换的程序
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void UART0_Init()
{
/* Reset IP */
SYS_ResetModule(UART0_RST);
/* Configure UART0 and set UART0 Baudrate */
UART_Open(UART0, 115200);
}
设置好模式，并打开。
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void ADC_IRQHandler(void)
这个看起来好复杂，脑子笨，看不懂。。
天灵灵地灵灵 发表于 2015-7-14 21:54 要这样发代码，才够意思，图片看的太费劲了 你的代码都是从哪找到的啊
复制/**************************************************************************** * [url=home.php?mod=space&uid=288409]@file[/url] main.c * [url=home.php?mod=space&uid=895143]@version[/url] V3.0 * $Revision: 6 $ * $Date: 14/01/28 11:44a $ * [url=home.php?mod=space&uid=247401]@brief[/url] M051 Series ADC Interface Controller Driver Sample Code * * @note * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved. * ******************************************************************************/ #include <stdio.h> #include "M051Series.h" #define PLL_CLOCK 50000000 /*---------------------------------------------------------------------------------------------------------*/ /* Define Function Prototypes */ /*---------------------------------------------------------------------------------------------------------*/ void SYS_Init(void); void UART0_Init(void); void AdcBurstModeTest(void); /*---------------------------------------------------------------------------------------------------------*/ /* Define global variables and constants */ /*---------------------------------------------------------------------------------------------------------*/ #define BURST_COUNT 20 volatile uint32_t g_u32AdcDataCount; uint16_t g_au16AdcData[BURST_COUNT]; void SYS_Init(void) { /*---------------------------------------------------------------------------------------------------------*/ /* Init System Clock */ /*---------------------------------------------------------------------------------------------------------*/ /* Enable Internal RC 22.1184MHz clock */ CLK_EnableXtalRC(CLK_PWRCON_OSC22M_EN_Msk); /* Waiting for Internal RC clock ready */ CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk); /* Switch HCLK clock source to Internal RC and HCLK source divide 1 */ CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HIRC, CLK_CLKDIV_HCLK(1)); /* Enable external XTAL 12MHz clock */ CLK_EnableXtalRC(CLK_PWRCON_XTL12M_EN_Msk); /* Waiting for external XTAL clock ready */ CLK_WaitClockReady(CLK_CLKSTATUS_XTL12M_STB_Msk); /* Set core clock as PLL_CLOCK from PLL */ CLK_SetCoreClock(PLL_CLOCK); /* Enable UART module clock */ CLK_EnableModuleClock(UART0_MODULE); /* Enable ADC module clock */ CLK_EnableModuleClock(ADC_MODULE); /* Select UART module clock source */ CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_CLKDIV_UART(1)); /* ADC clock source is 22.1184MHz, set divider to 7, ADC clock is 22.1184/7 MHz */ CLK_SetModuleClock(ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_CLKDIV_ADC(7)); /*---------------------------------------------------------------------------------------------------------*/ /* Init I/O Multi-function */ /*---------------------------------------------------------------------------------------------------------*/ /* Set P3 multi-function pins for UART0 RXD and TXD */ SYS->P3_MFP &= ~(SYS_MFP_P30_Msk | SYS_MFP_P31_Msk); SYS->P3_MFP |= SYS_MFP_P30_RXD0 | SYS_MFP_P31_TXD0; /* Disable the P1.0 - P1.3 digital input path to avoid the leakage current */ GPIO_DISABLE_DIGITAL_PATH(P1, 0xF); /* Configure the P1.0 - P1.3 ADC analog input pins */ SYS->P1_MFP &= ~(SYS_MFP_P10_Msk | SYS_MFP_P11_Msk | SYS_MFP_P12_Msk | SYS_MFP_P13_Msk); SYS->P1_MFP |= SYS_MFP_P10_AIN0 | SYS_MFP_P11_AIN1 | SYS_MFP_P12_AIN2 | SYS_MFP_P13_AIN3 ; } /*---------------------------------------------------------------------------------------------------------*/ /* Init UART */ /*---------------------------------------------------------------------------------------------------------*/ void UART0_Init() { /* Reset IP */ SYS_ResetModule(UART0_RST); /* Configure UART0 and set UART0 Baudrate */ UART_Open(UART0, 115200); } /*---------------------------------------------------------------------------------------------------------*/ /* Function: ADC_GetConversionRate */ /* */ /* Parameters: */ /* None. */ /* */ /* Returns: */ /* Return the A/D conversion rate (sample/second) */ /* */ /* Description: */ /* The conversion rate depends on the clock source of ADC clock. */ /* It only needs 21 ADC clocks to complete an A/D conversion. */ /*---------------------------------------------------------------------------------------------------------*/ static __INLINE uint32_t ADC_GetConversionRate() { uint32_t u32AdcClkSrcSel; uint32_t u32ClkTbl[4] = {__HXT, 0, 0, __HIRC}; /* Set the PLL clock frequency */ u32ClkTbl[1] = PllClock; /* Set the system core clock frequency */ u32ClkTbl[2] = SystemCoreClock; /* Get the clock source setting */ u32AdcClkSrcSel = ((CLK->CLKSEL1 & CLK_CLKSEL1_ADC_S_Msk) >> CLK_CLKSEL1_ADC_S_Pos); /* Return the ADC conversion rate */ return ((u32ClkTbl[u32AdcClkSrcSel]) / (((CLK->CLKDIV & CLK_CLKDIV_ADC_N_Msk) >> CLK_CLKDIV_ADC_N_Pos) + 1) / 21); } /*---------------------------------------------------------------------------------------------------------*/ /* Function: AdcBurstModeTest */ /* */ /* Parameters: */ /* None. */ /* */ /* Returns: */ /* None. */ /* */ /* Description: */ /* ADC burst mode test. */ /*---------------------------------------------------------------------------------------------------------*/ void AdcBurstModeTest() { uint8_t u8Option; uint32_t u32Count; printf("\n\nConversion rate: %d samples/second\n", ADC_GetConversionRate()); printf("\n"); printf("+----------------------------------------------------------------------+\n"); printf("| ADC burst mode sample code |\n"); printf("+----------------------------------------------------------------------+\n"); printf("\nIn this test, software will get %d conversion results from the specified channel.\n", BURST_COUNT); while(1) { printf("\nSelect input mode:\n"); printf(" [1] Single end input (channel 2 only)\n"); printf(" [2] Differential input (channel pair 1 only)\n"); printf(" Other keys: exit burst mode test\n"); u8Option = getchar(); if(u8Option == '1') { printf("%d conversion results of channel 2:\n", BURST_COUNT); /* Set the ADC operation mode as burst, input mode as single-end and enable the analog input channel 2 */ ADC_Open(ADC, ADC_ADCR_DIFFEN_SINGLE_END, ADC_ADCR_ADMD_BURST, 0x1 << 2); /* Power on ADC module */ ADC_POWER_ON(ADC); /* clear the A/D interrupt flag for safe */ ADC_CLR_INT_FLAG(ADC, ADC_ADF_INT); /* Enable the ADC interrupt */ ADC_EnableInt(ADC, ADC_ADF_INT); NVIC_EnableIRQ(ADC_IRQn); /* Reset the ADC data counter and start A/D conversion */ g_u32AdcDataCount = 0; ADC_START_CONV(ADC); while(g_u32AdcDataCount < BURST_COUNT); /* Stop A/D conversion */ ADC_STOP_CONV(ADC); /* Disable the ADC interrupt */ ADC_DisableInt(ADC, ADC_ADF_INT); } else if(u8Option == '2') { printf("%d conversion results of differential input channel pair 1:\n", BURST_COUNT); /* Set the ADC operation mode as burst, input mode as differential and enable analog input channel 2 for differential input channel pair 1*/ ADC_Open(ADC, ADC_ADCR_DIFFEN_DIFFERENTIAL, ADC_ADCR_ADMD_BURST, 1 << 2); /* Power on ADC module */ ADC_POWER_ON(ADC); /* clear the A/D interrupt flag for safe */ ADC_CLR_INT_FLAG(ADC, ADC_ADF_INT); /* Enable the ADC interrupt */ ADC_EnableInt(ADC, ADC_ADF_INT); NVIC_EnableIRQ(ADC_IRQn); /* Reset the ADC data counter and start A/D conversion */ g_u32AdcDataCount = 0; ADC_START_CONV(ADC); while(g_u32AdcDataCount < BURST_COUNT); /* Stop A/D conversion */ ADC_STOP_CONV(ADC); /* Disable the ADC interrupt */ ADC_DisableInt(ADC, ADC_ADF_INT); } else return ; for(u32Count = 0; u32Count < BURST_COUNT; u32Count++) { printf("Conversion result: 0x%X\n", g_au16AdcData[u32Count]); } /* Change operation mode to clear burst mode FIFO buffers */ ADC_Open(ADC, ADC_ADCR_DIFFEN_DIFFERENTIAL, ADC_ADCR_ADMD_SINGLE, 2); } } /*---------------------------------------------------------------------------------------------------------*/ /* ADC interrupt handler */ /*---------------------------------------------------------------------------------------------------------*/ void ADC_IRQHandler(void) { while(ADC_IS_DATA_VALID(adc, 0)) /* Check the VALID bits */ { if(g_u32AdcDataCount >= BURST_COUNT) return; /* In burst mode, the software always gets the conversion result of the specified channel from channel 0 */ g_au16AdcData[g_u32AdcDataCount++] = (uint16_t)ADC_GET_CONVERSION_DATA(ADC, 0); } ADC_CLR_INT_FLAG(ADC, ADC_ADF_INT); /* clear the A/D conversion flag */ } /*---------------------------------------------------------------------------------------------------------*/ /* MAIN function */ /*---------------------------------------------------------------------------------------------------------*/ main(void) { /* Unlock protected registers */ SYS_UnlockReg(); /* Init System, IP clock and multi-function I/O */ SYS_Init(); /* Lock protected registers */ SYS_LockReg(); /* Init UART0 for printf */ UART0_Init(); /*---------------------------------------------------------------------------------------------------------*/ /* SAMPLE CODE */ /*---------------------------------------------------------------------------------------------------------*/ printf("\nSystem clock rate: %d Hz", SystemCoreClock); /* Burst Mode test */ AdcBurstModeTest(); /* Disable ADC module */ ADC_Close(ADC); /* Disable ADC IP clock */ CLK_DisableModuleClock(ADC_MODULE); /* Disable External Interrupt */ NVIC_DisableIRQ(ADC_IRQn); printf("\nExit ADC sample code\n"); while(1); }
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要这样发代码，才够意思，图片看的太费劲了
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ADC_POWER_ON(ADC);
这个ADC还有电源开关，好有意思。
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感谢楼主，正需要
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图片确实看着好累啊
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虽然是图片，内容却很精彩，不得不佩服。
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这是图片啊，不能直接复制用啊
评论到底啦~