5年后-NXP ADC无法工作
不久前,我试图在NXP的LPC3143上编程ADC,但没有成功。5年后的今天,我给自己买了一个,并用LPC4088试了试。同样的问题仍然存在于ADC!当I/O配置、GPIO、定时器和PWM像一个魔咒一样工作时,我似乎无法让它工作 我总是通过阅读。因此,在阅读了手册之后,我想到了: LPC4088 ioconfig.h LPC4088系统.h LPC4088 gpio.h LPC4088模数转换器.h main.c 以下是LPC4088快速启动板的更详细接口说明-我的外部电位计输出连接到P1.31,而LED已嵌入板上:5年后-NXP ADC无法工作,c,microcontroller,adc,cpu-registers,nxp-microcontroller,C,Microcontroller,Adc,Cpu Registers,Nxp Microcontroller,不久前,我试图在NXP的LPC3143上编程ADC,但没有成功。5年后的今天,我给自己买了一个,并用LPC4088试了试。同样的问题仍然存在于ADC!当I/O配置、GPIO、定时器和PWM像一个魔咒一样工作时,我似乎无法让它工作 我总是通过阅读。因此,在阅读了手册之后,我想到了: LPC4088 ioconfig.h LPC4088系统.h LPC4088 gpio.h LPC4088模数转换器.h main.c 以下是LPC4088快速启动板的更详细接口说明-我的外部电位计输出连接到P1.31
好吧,所以我为了这件事拼命工作了10个小时,早上4:30就上床睡觉了。。。这里是-LPC4088 ADC头文件的工作示例与问题中的相同:
#include "LPC4088-ioconfig.h"
#include "LPC4088-system.h"
#include "LPC4088-gpio.h"
#include "LPC4088-adc.h"
int main(){
IOCON_P1_13 &= !(0x67F);
IOCON_P1_31 |= 0b011;
IOCON_P1_31 &= !(0b11<<4);
IOCON_P1_31 &= !(1<<7);
IOCON_P0_23 |= 0b011;
IOCON_P0_23 &= !(0b11<<4);
IOCON_P0_23 &= !(1<<7);
PCONP |= (1<<15);
DIR1 |= (1<<13);
MASK1 &= !(1<<13);
PCONP |= (1<<12);
INTEN &= !(0x1FF);
CR &= !(0x7<<24);
CR &= !(1<<16);
while(1){
CR |= (1<<21);
CR |= (0x1<<24);
while( (STAT & (1<<0) ) == 0x0 );
CR &= !(0x1<<24);
unsigned int result = 0;
result = ( (DR0 & 0xFFF0) >> 4);
CR &= (1<<21);
if (result > 0x7FF){
SET1 |= (1<<13);
}
else{
CLR1 |= (1<<13);
}
}
}
LPC中的示例更简单。我打赌这会对你们中的一些人有所帮助。。。我打算用这些例子来打开我的GIT,为所有的外围设备。但现在我只知道如何操作ioconfig、gpio、定时器、pwm和adc。您是否出于某种原因反对赋值运算符?对不起,我不明白您的意思。你能解释一下吗?你对这项提案的支持率比你高。我会修正它的可读性。停止多次重击同一个易失性寄存器。读取一次,多次修改该值,然后写入一次。它不是一个普通的变量,它是易变的,因此编译器无法优化您的愚蠢行为。
//register definitions for system & clock peripheral
//used to turn on peripherals
#define PCONP (*((volatile unsigned int *) 0x400FC0C4))
//register definitions for GPIO peripheral
//only port 1
#define DIR1 (*((volatile unsigned int *) 0x20098020))
#define MASK1 (*((volatile unsigned int *) 0x20098030))
#define PIN1 (*((volatile unsigned int *) 0x20098034))
#define SET1 (*((volatile unsigned int *) 0x20098038))
#define CLR1 (*((volatile unsigned int *) 0x2009803C))
//register definitions for ADC peripheral
#define CR (*((volatile unsigned int *) 0x40034000))
#define GDR (*((volatile unsigned int *) 0x40034004))
#define INTEN (*((volatile unsigned int *) 0x4003400C))
#define DR0 (*((volatile unsigned int *) 0x40034010))
#define DR1 (*((volatile unsigned int *) 0x40034014))
#define DR2 (*((volatile unsigned int *) 0x40034018))
#define DR3 (*((volatile unsigned int *) 0x4003401C))
#define DR4 (*((volatile unsigned int *) 0x40034020))
#define DR5 (*((volatile unsigned int *) 0x40034024))
#define DR6 (*((volatile unsigned int *) 0x40034028))
#define DR7 (*((volatile unsigned int *) 0x4003402C))
#define STAT (*((volatile unsigned int *) 0x40034030))
#define TRM (*((volatile unsigned int *) 0x40034034))
#include "LPC4088-ioconfig.h"
#include "LPC4088-system.h"
#include "LPC4088-gpio.h"
#include "LPC4088-adc.h"
int main(){
//***********************************************************
//we set P1.13 (port 1, pin 13) as GPIO, no pull-up, no hysteresis, not inverted, standard, push-pull
IOCON_P1_13 &= !(0x67F);
//we turn on GPIO peripheral
PCONP |= (1<<15);
//set P1.13 as an output GPIO
DIR1 |= (1<<13);
//setting a mask for pin P1.13
MASK1 &= !(1<<13);
//***********************************************************
//configure pin P1.31 as an input ADC0_IN5 (channel 5)
IOCON_P1_31 |= 0b011;
//we disable pullup or pulldown resistors on pin P1.31
IOCON_P1_31 &= !(0x3<<4);
//we configure pin P1.31 for ADMODE
IOCON_P1_31 &= !(1<<7);
//we turn on the ADC peripheral
PCONP |= (1<<12);
//we divide PCLK delimo with 99+1=100 (only for precaution)
CR |= (99<<8);
//we start the ADC
CR |= (1<<21);
//we disable ADC interrupts
INTEN &= !(0x1FF);
//we choose chanel 5 which is the only one that we choose
CR &= !(0xFF);
CR |= (1<<5);
//before choosing "burst mode" we need to turn off the conversion
CR &= !(0x7<<24);
//we choose "burst mode" - conversion starts and is continuous
CR |= (1<<16);
//***********************************************************
while(1){
//we wait for the conversion to finish and we save the result
//we right-shift because value is stored in DR5 bits 15:4!
while( (DR5 & (1<<31) ) != (1<<31) );
int result = ( (DR5 & 0xFF0) >> 4);
//12-bit has a max value of 0xFFF - we compare result to the half of this value - 0x7FF.
if (result >= 0x7FF){
//turn on an LED on pin P1.13
SET1 |= (1<<13);
}
else{
//turn off an LED on pin P1.13
CLR1 |= (1<<13);
}
}
}
#include "LPC4088-ioconfig.h"
#include "LPC4088-system.h"
#include "LPC4088-gpio.h"
#include "LPC4088-adc.h"
int main(){
IOCON_P1_13 &= !(0x67F);
IOCON_P1_31 |= 0b011;
IOCON_P1_31 &= !(0b11<<4);
IOCON_P1_31 &= !(1<<7);
IOCON_P0_23 |= 0b011;
IOCON_P0_23 &= !(0b11<<4);
IOCON_P0_23 &= !(1<<7);
PCONP |= (1<<15);
DIR1 |= (1<<13);
MASK1 &= !(1<<13);
PCONP |= (1<<12);
INTEN &= !(0x1FF);
CR &= !(0x7<<24);
CR &= !(1<<16);
while(1){
CR |= (1<<21);
CR |= (0x1<<24);
while( (STAT & (1<<0) ) == 0x0 );
CR &= !(0x1<<24);
unsigned int result = 0;
result = ( (DR0 & 0xFFF0) >> 4);
CR &= (1<<21);
if (result > 0x7FF){
SET1 |= (1<<13);
}
else{
CLR1 |= (1<<13);
}
}
}