资源简介
STM32通过软件模拟 IIC 驱动温湿度传感器HTU21D,库函数实现。可使用于测试,通过软件来模拟 I2C 的时序逻辑。
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
----------- --------- ---------- ----- ----
目录 0 2018-04-21 23:25 02.I2C_Software_Htu21d\
目录 0 2018-04-21 23:16 02.I2C_Software_Htu21d\CORE\
文件 17273 2010-06-07 10:25 02.I2C_Software_Htu21d\CORE\core_cm3.c
文件 85714 2011-02-09 14:59 02.I2C_Software_Htu21d\CORE\core_cm3.h
文件 15503 2011-03-10 10:52 02.I2C_Software_Htu21d\CORE\startup_stm32f10x_hd.s
目录 0 2018-04-21 23:16 02.I2C_Software_Htu21d\HARDWARE\
目录 0 2018-04-21 23:21 02.I2C_Software_Htu21d\HARDWARE\HTU21D\
文件 3603 2018-04-21 23:21 02.I2C_Software_Htu21d\HARDWARE\HTU21D\htu21d.c
文件 823 2018-04-21 19:59 02.I2C_Software_Htu21d\HARDWARE\HTU21D\htu21d.h
目录 0 2018-04-21 23:18 02.I2C_Software_Htu21d\HARDWARE\I2C\
文件 6096 2018-04-21 23:18 02.I2C_Software_Htu21d\HARDWARE\I2C\software_i2c.c
文件 2163 2018-04-21 23:18 02.I2C_Software_Htu21d\HARDWARE\I2C\software_i2c.h
目录 0 2018-04-21 23:16 02.I2C_Software_Htu21d\HARDWARE\LCD\
文件 35016 2014-01-02 17:22 02.I2C_Software_Htu21d\HARDWARE\LCD\FONT.H
文件 31163 2018-04-21 11:32 02.I2C_Software_Htu21d\HARDWARE\LCD\lcd.c
文件 8193 2018-04-21 11:32 02.I2C_Software_Htu21d\HARDWARE\LCD\lcd.h
目录 0 2018-04-21 23:16 02.I2C_Software_Htu21d\HARDWARE\LED\
文件 561 2018-04-06 12:00 02.I2C_Software_Htu21d\HARDWARE\LED\led.c
文件 148 2018-03-27 23:16 02.I2C_Software_Htu21d\HARDWARE\LED\led.h
文件 399 2011-04-23 10:24 02.I2C_Software_Htu21d\keilkilll.bat
目录 0 2018-04-21 23:16 02.I2C_Software_Htu21d\STM32F10X_FWLib\
目录 0 2018-04-21 23:23 02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\
文件 8982 2011-03-10 10:47 02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\misc.h
文件 20175 2012-09-13 12:23 02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\stm32f10x_gpio.h
文件 30452 2011-03-10 10:47 02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\stm32f10x_rcc.h
文件 16548 2012-09-11 21:49 02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\stm32f10x_usart.h
目录 0 2018-04-21 23:23 02.I2C_Software_Htu21d\STM32F10X_FWLib\src\
文件 7046 2011-03-10 10:47 02.I2C_Software_Htu21d\STM32F10X_FWLib\src\misc.c
文件 23221 2011-03-11 17:43 02.I2C_Software_Htu21d\STM32F10X_FWLib\src\stm32f10x_gpio.c
文件 51271 2011-03-10 10:47 02.I2C_Software_Htu21d\STM32F10X_FWLib\src\stm32f10x_rcc.c
文件 38308 2011-03-10 10:47 02.I2C_Software_Htu21d\STM32F10X_FWLib\src\stm32f10x_usart.c
............此处省略26个文件信息
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