Keil 中是怎么判断是否要选择use Microlib

yangkunhenry 2019-06-12 04:24:11


查了下microlib的作用。
如果做简单的单片机应用的话,就选microlib吧。

各位大神都怎么选择这个?
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yangkunhenry 2020-03-04
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引用 4 楼 中国PCB设计 的回复:
STM32F103RET6中,选了这个,程序就不能正常运行。编译出来的目标代码还要大些。害人的东西。
好吧,估计哪里有问题
中国PCB设计 2020-03-04
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STM32F103RET6中,选了这个,程序就不能正常运行。编译出来的目标代码还要大些。害人的东西。
springcity2014 2019-06-14
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不支持stdio.h等一些库,另外引导是有一些不一样的.memset/memcpy很慢.注意的话就是,如果MCU的ROM,RAM比较小,可以尝试使用这个.不过在使用这个之前,可以通过MDK编译器压缩代码的方式先压缩代码,如果不能够满足,再用这个.
「已注销」 2021-07-11
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@springcity2014 好像有stdio.h吧。。。我用标准库使用sprintf输出浮点数总是在执行一段时间后进入HardFault错误里面,用了microlib后sprintf正常工作了
yangkunhenry 2019-06-12
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引用 1 楼 dceacho 的回复:
体积小,所以小应用喜欢这个
选和不选在开发中几乎没什么区别吧? 或者说有没有什么要注意的,能否分享一下,多谢大神
dceacho 2019-06-12
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体积小,所以小应用喜欢这个
查看文章 STM32 keil mdk启动代码发分析_转2010年01月29日 星期五 13:50 ;// Stack Configuration ;// Stack Size (in Bytes) ;// Stack_Size EQU 0x00000200 ;//定义堆栈大小 AREA STACK, NOINIT, READWRITE, ALIGN=3 ;//定义一个数据段 按8字节对齐 ;AREA 伪指令用于定义一个代码段或数据段 NOINIT:指定此数据段仅仅保留了内存单元,而没有将各初始值写入内存单元,或者将各个内存单元值初始化为0 Stack_Mem SPACE Stack_Size ;//保留Stack_Size大小的堆栈空间 分 配连续 Stack_Size 字节的存储单元并初始化为 0 __initial_sp ;//标号,代表堆栈顶部地址,后面有用 ;// Heap Configuration ;// Heap Size (in Bytes) ;// Heap_Size EQU 0x00000020 ;//定义堆空间大小 AREA HEAP, NOINIT, READWRITE, ALIGN=3 ;//定义一个数据段,8字节对齐 __heap_base Heap_Mem SPACE Heap_Size ;//保留Heap_Size的堆空间 __heap_limit ;//标号,代表堆末尾地址,后面有用 PRESERVE8 ;//指示编译器8字节对齐 THUMB ;//指示编译器为THUMB指令 ; Vector Table Mapped to Address 0 at Reset AREA RESET, DATA, READONLY ;//定义只读数据段,其实放在CODE区,位于0地址 EXTERN NMIException EXTERN HardFaultException EXTERN MemManageException EXTERN BusFaultException EXTERN UsageFaultException EXTERN SVCHandler EXTERN DebugMonitor EXTERN PendSVC EXTERN SysTickHandler ;//声明这些符号在外部定义,同C ;//在××it.c中实现这些函数 ,中断就能自动调用了 EXPORT __Vectors EXPORT __initial_sp ;EXPORT:在程序中声明一个全局的标号__Vectors,该标号可在其他的文件中引用;I
/*********************** (C) COPYLEFT 2010 Leafgrass *************************/ This project runs on uC/OS-II V2.52 and is based on STM32F103RBT6(ARM Cortex-M3 Core) Take care of the configuration of project. There're some Include Paths while linking which cannot be modified. Procedure of driving a device(IMPORTANT!!!): 1.Connect hardware correctly. 2.Prepare DEVICE_NAME.h and DEVICE_NAME.c. 3.Enable clock of related components. 4.Enable related interrupt while configure NVIC. 5.Configure related IO pins. 6.Finish test code and begin testing. 2010-06-10( original ): Sucessfully port uCOS-II V2.52. 2010-06-11: Add code "SysTick_CounterCmd(SysTick_Counter_Enable);" in SysTick_Configuration(), solve the problem that the program can't get into SysTickHandler(), as below: /******************************************************************************* * Function Name : SysTick_Config * Description : Configures SysTick * Input : None * Output : None * Return : None *******************************************************************************/ void SysTick_Configuration(void) { NVIC_SystemHandlerPriorityConfig(SystemHandler_SysTick, 0, 1); /* Configure HCLK clock as SysTick clock source */ SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8); /* SysTick interrupt each 1000 Hz with HCLK equal to 72MHz */ SysTick_SetReload(9000); /* Enable the SysTick Interrupt */ SysTick_ITConfig(ENABLE); SysTick_CounterCmd(SysTick_Counter_Enable); //Important!! Solve "the program can't get into SysTickHandler()!! } 2010-06-12( updates to V1.0 ): 1. Add EXTI8, EXTI9 on PC8, PC9, only for EXTI test. 2. Modify some comments in LCD5110_lib. 3. (in main.c) Modifiy tasks' priority LED_TASK_Prio 1 -> 5 START_TASK_Prio 2 -> 10 4. (in main.c) Modify code "OSTaskDel(START_TASK_Prio);" to "OSTaskSuspend(START_TASK_Prio);" 2010-07-13 1.Drive LTM022A69B LCD ok. Just use I/O to imitate SPI. Still cannot use internal SPI to drive it. 2.Move LCD library of LTM022A69B into "LCD_lib.c". 2010-07-15: Add color bar display in LCD_test(). 2010-07-16( updates to V1.1 ): 1.Solve problem about position error and color error, when display a set of 16-bit color data. Mainly resulted from CPU type, big endian or little endian. STM32F103RBT6 is little endian while in default set. 2.Add Draw_img(); 3.Add colorful characters and strings, add parameters about colors in display functions.(colors are defined in LTM022A69B.h) 2010-07-17: 1.Add comments in LCD_Init(). 2.Add parameter "color" to function Draw_dot(). 3.Add function SetCursor(). 4.Unify LCD related functions' name. Add prefix "LCD_". 2010-07-19: Modify data type in LCD_Lib. normal --> const. At one time, modify the pointers type to const. 2010-07-20: 1.Correct the error that OSTimeDlyHMSM() can't delay an accurate time, by modifying SysTick_Configuration() to get an correct clock frequency. 2010-07-31: Add STM32_Init.c but is not referenced, for future use of Configuration Wizard. 2010-08-01: Configure SPI ok, and do some test(SPI2 tx -> SPI1 rx, display on LCD). 2010-08-03: 1.Add SPI test code in main.c, SPI2 send data, SPI1 receive data , display info on LCD, use soft SPI. 2.Add exported macro "USESPI" to choose if use SPI to drive LCD or not. 3.After several days researching about hard SPI to drive LCD, failed. So switch to use a faster GPIO method, as below: Replace "#define LCD_RST_H() GPIO_SetBits(LCD_CTRL_PORT, LCD_RST)" in ST library with "#define LCD_RST_H() ( LCD_CTRL_PORT->BSRR = LCD_RST )" for a faster LCD refresh speed. 4.Modify name "LCD_SCI" to "LCD_SI", 'cause it means Serial Interface. 5.Modify function name "LCD_test()" to "LCD_Test()". 2010-08-06: Comment off "typedef enum {FALSE = 0, TRUE = !FALSE} bool;" in stm32f10x.type.h in order to avoid warning. 2010-08-09: Prepare to update to v2.0. 2010-08-10( Update to v2.0, use ST's FWLib3.1.2 ): 1. Set project(Keil RealView MDK). (1) RO memory area : IROM1 -- start at 0x08000000, size 0x20000. (2) RW memory area : IRAM1 -- start at 0x20000000, size 0x5000. (3) Output setup. (4) Listing setup, no assembler list. (5) C/C++ setup. Preprocessor Symbols : Define -- USE_STDPERIPH_DRIVER, STM32F10X_MD. Include Paths : ..\; ..\..\Libraries\CMSIS\Core\CM3; ..\..\Libraries\STM32F10x_StdPeriph_Driver\inc; ..\..\App; ..\..\Driver; ..\..\OS; ..\..\OS\port (6) Linker, Use memory layout from target dialog. (7) Debug and Utilities, Cortex-M/R J-Link/J-Trace. Disable Trace. 2. Modify code in "includes.h". 3. Modify startup code, did not use the st original one. Port those used in FWLib2.0 instead. Of course, some code are revised for FWLib3.1.2(StdPeriph_Driver and CMSIS). Mainly rewrite the names of the ISR. The most important two are : "PendSV_Handler" and "SysTick_Handler". ---> "OSPendSV" and "SysTick_Handler". (in "os_cpu_a.asm") (in "stm32f10x_it.c") 4. Modify initial code for SysTick in "SysTick_Configuration()" in "CPU_Init.c" because of the changing of library. Note : A general problem is that program always go into "B OSStartHang" in "OSStartHighRdy" in "os_cpu_a.asm", and will die in there... That's caused by program hasn't step into the correct ISR yet. Enable the SysTick interrupt, check if the name of Interrupt Service Routines are right, then all will be OK. 5. Still some problem with retargeting "printf()". If use "printf()" in program, system wouldn't run. 6. Change Project name to "RTOS_STM32". 2010-08-11( Update to v2.1, use ST's FWLib3.3.0 ): 1. Modify Include Path in Target Options. 2. Comment "typedef enum {FALSE = 0, TRUE = !FALSE} bool;" off in order to avoid error: "..\stm32f10x.h(454): error: #40: expected an identifier". 2010-08-12( Update to v2.2 ): 1. Remove the incorrect use of SPI in LCD display, add a new schedule( maily used SPI busy flag ). 2. Commen off code "assert_param(IS_SPI_ALL_PERIPH(SPIx));" in "SPI_I2S_SendData()", "SPI_I2S_ReceiveData()", and "SPI_I2S_GetFlagStatus" in "stm32f10x_spi.h", in order to improve LCD refresh frequency. 3. Finish to retarget C library printf() to UART. As a foundation, change the setup of KEIL in "Target Options" --> "Code Generation" --> tick "Use MicroLIB". There are still some problem with building, modify a few lines in "stm32f10x_startup.s" : ================================ IF :DEF:__MICROLIB EXPORT __initial_sp EXPORT __heap_base EXPORT __heap_limit ELSE IMPORT __use_two_region_memory EXPORT __user_initial_stackheap ================================ Then rebuild. Add retarget code in main.c : ================================================================ #ifdef __GNUC__ // With GCC/RAISONANCE, small printf // (option LD Linker->Libraries->Small printf set to 'Yes') // calls __io_putchar() #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif // __GNUC__ ---------------------------------------------------------------- PUTCHAR_PROTOTYPE { // Place your implementation of fputc here // e.g. write a character to the USART USART_SendData(USARTx, (u8)ch); // Loop until the end of transmission while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET) {} return ch; } ================================================================ 2010-08-14(update to v2.3): 1. Rewrite the different part of code into its C file. 2. Drive TIM3 output PWM wave successfully. 3. Add "servo" file, for servo control. 2010-08-19(update to v2.4, GPS data receive ok): 1. Add "gps" file. 2. Add code in "USART3_IRQHandler()", mainly to receive data from GPS. But there's still someting confusing, that the pair "USART_ITConfig(USART3, USART_IT_RXNE, DISABLE);" and "USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);" cannot work well. Because once use them, some data will be lost. 2010-08-22: Refresh firmware of GPS, modify to Baudrate 9600, China timezone, WGS-84 coordinate. 2010-09-02: Replace those two old startup files "cortexm3_macro.s" and "stm32f10x_startup.s" with the one "startup_stm32f10x_md.s" which is created by MCD Application Team in FWLib3.3.0. 2010-09-13: 1. Add general_task.h and .c for miscellaneous experimental purpose. 2. Add uart output infomation in booting stage. 3. Add macro "LED_TOGGLE()" use "(GPIO_ReadOutputDataBit(GPIOA, GPIO_Pin_1))" 4. Create Logo: _ _ / / | | ___ __ _ _| |_ __ _ _ __ __ _ _ _ | | / _ \/ _` |_ _/ _` | \/ _)/ _` | / / / / | |_ _ __( (_| | | | (_| | | | ( (_| | \ \ \ \ |_ _ _\___|\__,_| | | \__, / | | \__,_| /_/ /_/ /_/ \_ _/ 5. EXTI again. setup procedure: GPIO IN FLOATING -> NVIC IRQ -> EXTI Config -> _it.c /*********************** (C) COPYLEFT 2010 Leafgrass *************************/

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