91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

  • 大小: 41KB
    文件類型: .rar
    金幣: 2
    下載: 0 次
    發(fā)布日期: 2021-05-20
  • 語言: 其他
  • 標(biāo)簽: DHT11驅(qū)動??jz2440??

資源簡介

基于jz2440Linux3.4.2的驅(qū)動 QT做的GUI顯示系統(tǒng)首先進(jìn)行系統(tǒng)初始化,然后讀取傳感器數(shù)據(jù),對數(shù)據(jù)進(jìn)行相應(yīng)處理,得到歷史最高值,在進(jìn)行數(shù)據(jù)的保存操作,其次進(jìn)行計時處理,最后是顯示處理,每0.1S刷新一次界面。從讀取數(shù)據(jù)到顯示處理是一個循環(huán)的過程,進(jìn)行顯示處理判斷后,來回反復(fù)地進(jìn)行讀取功能處理。

資源截圖

代碼片段和文件信息

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#define?DEVICE_NAME?“dht11“

static?char?DHT11_read_byte?(?void?)
{
char?DHT11_byte?;
unsigned?char?i?;
unsigned?char?temp?;

DHT11_byte?=?0?;
for?(?i?=?0?;?i? {
temp?=?0?;
while?(?!?(s3c2410_gpio_getpin?(?S3C2410_GPF(2)?)?)?)
{
temp?++?;
if?(?temp?>?12?)
return?1?;
udelay?(?5?)?;
}
temp?=?0?;
while?(?s3c2410_gpio_getpin?(?S3C2410_GPF(2)?)?)
{
temp?++?;
if?(?temp?>?20?)
return?1?;
udelay?(?5?)?;
}
if?(?temp?>?6?)
{
DHT11_byte?<<=?1?;
DHT11_byte?|=?1?;
}?
else
{
DHT11_byte?<<=?1?;
DHT11_byte?|=?0?;
}
}
return?DHT11_byte?;
}

static?ssize_t?DHT11_read?(?struct?file*?filp?char?__user*?buf?size_t?count?loff_t*?f_pos?)
{
unsigned?char?DataTemp;
unsigned?char?i;
unsigned?char?err;
char?tempBuf[5];
// loff_t?pos?=?*f_pos?;

err?=?0?;

s3c2410_gpio_cfgpin?(?S3C2410_GPF(2)??S3C2410_GPIO_OUTPUT?);
s3c2410_gpio_setpin?(?S3C2410_GPF(2)??0?);
msleep?(?18?);
// mdelay?(?18?);
s3c2410_gpio_setpin?(?S3C2410_GPF(2)??1?);
udelay?(?40?);
s3c2410_gpio_cfgpin?(?S3C2410_GPF(2)??S3C2410_GPIO_INPUT?);
if?(?!err?)
{
DataTemp?=?10?;
while?(?!(?s3c2410_gpio_getpin?(?S3C2410_GPF(2)?)?)?&&?DataTemp?)
{
DataTemp?--;
udelay?(?10?);
}
if?(?!DataTemp?)
{
err?=?1;
count?=?-EFAULT;
}
}
if?(?!err?)
{
DataTemp?=?10?;
while?(?(?s3c2410_gpio_getpin?(?S3C2410_GPF(2)?)?)?&&?DataTemp?)
{
DataTemp?--;
udelay?(?10?);
}
if?(?!DataTemp?)
{
err?=?1;
count?=?-EFAULT;
}
}
if?(?!err?)
{
for?(?i?=?0;?i? {
tempBuf[i]?=?DHT11_read_byte?()?;
}
DataTemp?=?0?;
for?(?i?=?0;?i? {
DataTemp?+=?tempBuf[i]?;
}
if?(?DataTemp?!=?tempBuf[4]?)
{
count?=?-EFAULT;
}
// if?(?count?>?(?5?-?pos?)?)
// {
// count?=?5?-?pos?;
// }
if?(?count?>?5?)
{
count?=?5?;
}

//? pos?+=?count;
// if?(?copy_to_user?(?buf??tempBuf?+?*f_pos??count?)?)
if?(?copy_to_user?(?buf??tempBuf??count?)?)
{
count?=?-EFAULT?;
}
// *f_pos?=?pos;
}
s3c2410_gpio_cfgpin?(?S3C2410_GPF(2)??S3C2410_GPIO_OUTPUT?);
s3c2410_gpio_setpin?(?S3C2410_GPF(2)??1?);
return?count;
}


static?struct?file_operations?dev_fops?=?{
.owner?=?THIS_MODULE
.read?=?DHT11_read
};
static?struct?miscdevice?misc?=?{
.minor?=?MISC_DYNAMIC_MINOR
.name?=?DEVICE_NAME
.fops?=?&dev_fops
};

static?int?__init?DHT11_init_module?(?void?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3425??2018-03-08?20:04??dht11?_test\dht11.c

?????文件???????3765??2011-06-22?15:49??dht11?_test\dht11.ko

?????文件???????8086??2011-06-09?21:39??dht11?_test\dht11_test

?????文件????????757??2018-03-08?20:12??dht11?_test\dht11_test.c

?????文件????????178??2018-03-08?17:52??dht11?_test\Makefile

????I.A....???????282??2018-03-09?19:19??test最終\main.cpp

????I.A....??????2352??2018-03-09?19:19??test最終\main.o

????I.A....?????39806??2018-03-09?19:19??test最終\Makefile

????I.A....??????2533??2018-03-09?19:19??test最終\moc_widget.cpp

????I.A....??????6460??2018-03-09?19:19??test最終\moc_widget.o

????I.A....?????55889??2018-03-09?19:19??test最終\test

????I.A....???????408??2018-03-09?19:19??test最終\test.pro

????I.A....?????23828??2018-03-09?19:19??test最終\test.pro.user

????I.A....??????5640??2018-03-09?19:19??test最終\ui_widget.h

????I.A....??????2014??2018-03-09?19:19??test最終\widget.cpp

????I.A....???????350??2018-03-09?19:19??test最終\widget.h

????I.A....?????16504??2018-03-09?19:19??test最終\widget.o

????I.A....??????4903??2018-03-09?19:19??test最終\widget.ui

?????目錄??????????0??2018-03-11?11:18??dht11?_test

????I..D...?????????0??2018-03-11?11:18??test最終

-----------?---------??----------?-----??----

???????????????177180????????????????????20


評論

共有 條評論