资源简介
代码实现了DHT22读取温度和湿度值(带小数),并通过串口1打印出来,DHT22驱动代码已做好封装,方便移植,IO口接的PA4,这个在dht22.h文件中自己修改,代码已共享
代码片段和文件信息
/**************************************************************************//**
* @file core_cm3.c
* @brief CMSIS Cortex-M3 Core Peripheral Access layer Source File
* @version V1.30
* @date 30. October 2009
*
* @note
* Copyright (C) 2009 ARM Limited. All rights reserved.
*
* @par
* ARM Limited (ARM) is supplying this software for use with Cortex-M
* processor based microcontrollers. This file can be freely distributed
* within development tools that are supporting such ARM based processors.
*
* @par
* THIS SOFTWARE IS PROVIDED “AS IS“. NO WARRANTIES WHETHER EXPRESS IMPLIED
* OR STATUTORY INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
* ARM SHALL NOT IN ANY CIRCUMSTANCES BE LIABLE FOR SPECIAL INCIDENTAL OR
* CONSEQUENTIAL DAMAGES FOR ANY REASON WHATSOEVER.
*
******************************************************************************/
#include
/* define compiler specific symbols */
#if defined ( __CC_ARM )
#define __ASM __asm /*!< asm keyword for ARM Compiler */
#define __INLINE __inline /*!< inline keyword for ARM Compiler */
#elif defined ( __ICCARM__ )
#define __ASM __asm /*!< asm keyword for IAR Compiler */
#define __INLINE inline /*!< inline keyword for IAR Compiler. Only avaiable in High optimization mode! */
#elif defined ( __GNUC__ )
#define __ASM __asm /*!< asm keyword for GNU Compiler */
#define __INLINE inline /*!< inline keyword for GNU Compiler */
#elif defined ( __TASKING__ )
#define __ASM __asm /*!< asm keyword for TASKING Compiler */
#define __INLINE inline /*!< inline keyword for TASKING Compiler */
#endif
/* ################### Compiler specific Intrinsics ########################### */
#if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
/* ARM armcc specific functions */
/**
* @brief Return the Process Stack Pointer
*
* @return ProcessStackPointer
*
* Return the actual process stack pointer
*/
__ASM uint32_t __get_PSP(void)
{
mrs r0 psp
bx lr
}
/**
* @brief Set the Process Stack Pointer
*
* @param topOfProcStack Process Stack Pointer
*
* Assign the value ProcessStackPointer to the MSP
* (process stack pointer) Cortex processor register
*/
__ASM void __set_PSP(uint32_t topOfProcStack)
{
msr psp r0
bx lr
}
/**
* @brief Return the Main Stack Pointer
*
* @return Main Stack Pointer
*
* Return the curren 属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 17273 2010-06-07 10:25 stm32f103 DHT22 程序\CORE\core_cm3.c
文件 85714 2011-02-09 14:59 stm32f103 DHT22 程序\CORE\core_cm3.h
文件 15503 2011-03-10 10:52 stm32f103 DHT22 程序\CORE\startup_stm32f10x_hd.s
文件 12765 2011-03-10 10:52 stm32f103 DHT22 程序\CORE\startup_stm32f10x_md.s
文件 2290 2018-05-29 16:41 stm32f103 DHT22 程序\HARDWARE\DHT22\dht22.c
文件 731 2018-05-29 16:41 stm32f103 DHT22 程序\HARDWARE\DHT22\dht22.h
文件 1298 2014-03-20 18:56 stm32f103 DHT22 程序\HARDWARE\LED\led.c
文件 640 2014-03-20 19:03 stm32f103 DHT22 程序\HARDWARE\LED\led.h
文件 399 2011-04-23 10:24 stm32f103 DHT22 程序\keilkilll.bat
文件 3940 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\core_cm3.crf
文件 102 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\core_cm3.d
文件 11200 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\core_cm3.o
文件 247375 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\delay.crf
文件 593 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\delay.d
文件 265660 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\delay.o
文件 252656 2018-05-29 16:41 stm32f103 DHT22 程序\OBJ\dht22.crf
文件 697 2018-05-29 16:41 stm32f103 DHT22 程序\OBJ\dht22.d
文件 270400 2018-05-29 16:41 stm32f103 DHT22 程序\OBJ\dht22.o
文件 305752 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\LED.axf
文件 1204 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\LED.build_log.htm
文件 246937 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\led.crf
文件 563 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\led.d
文件 29555 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\LED.hex
文件 69941 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\LED.htm
文件 529 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\LED.lnp
文件 264532 2018-05-29 16:39 stm32f103 DHT22 程序\OBJ\led.o
文件 0 2018-05-29 16:37 stm32f103 DHT22 程序\OBJ\LED.plg
文件 479 2018-05-29 16:38 stm32f103 DHT22 程序\OBJ\LED.sct
文件 12397 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\LED_Target 1.dep
文件 252113 2018-05-29 16:42 stm32f103 DHT22 程序\OBJ\main.crf
............此处省略114个文件信息
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