体验用VS Code 里 EIDE 进行芯片开发的快乐~ 开源、免费、更简便、支持GCC!
网站:bbs.21ic.com
单片机软件开发流程和其中一些知识点
VS Code 优势和 EIDE 插件介绍
准备资源
着手搭建环境
编译、烧录及调试演示视频
免费、开源且跨平台
轻量、解耦,本身只有编辑器的功能安装包大小仅不到100MB,但可以按需安装形形色色的插件使得整个工具链的集成度非常高
支持几乎所有语言的编辑,且有配套插件
编辑功能完善,行编辑、多行注释、多行选择、自动补全、自动跳转等功能支持到位
界面好看,不会崩溃
一块 MM32F0144C6P 芯片的核心板,这里选用灵动微官方提供的红色最小系统板
一根 Micro USB 插头的数据线,用作串口输出和供电
一个 J-Link 调试器,这里用的网上买的盗版便宜货 V9 版
Visual Studio Code for windows
gcc-arm-none-eabi for windows
JLink_Windows_V670g.exe 以及 灵动官方 J-Flash 插件安装包 (让 J-Link 可以搜索到 MM32F0144C6P 这颗芯片
不然只能选择 Cortex M0)
CH340 USB-Serial Port Driver
一份已经调试好的 KEIL template 工程代码包
MM32F0144C6P GCC 启动文件和链接文件 (由于官方不提供,所以得先办法自己编制)
MindMotion.MM32F0140_DFP.0.0.6 (可选,在 EIDE 中可以安装上它后具备芯片信息)
Mingw-w64 for windows(可选,可用于 Makefile 驱动一键 make 进行编译)
/**
******************************************************************************
* [url=home.php?mod=space&uid=288409]@file[/url] startup_mm32f0140_gcc.s
* [url=home.php?mod=space&uid=187600]@author[/url]
* [url=home.php?mod=space&uid=247401]@brief[/url] MM32F014x devices vector table for GCC toolchain.
* This module performs:
* - Set the initial SP
* - Set the initial PC == Reset_Handler,
* - Set the vector table entries with the exceptions ISR address
* - Branches to main in the C library (which eventually
* calls main()).
* After Reset the Cortex-M0 processor is in Thread mode,
* priority is Privileged, and the Stack is set to Main.
*
******************************************************************************
*/
.syntax unified
.cpu cortex-m0
.fpu softvfp
.thumb
.global g_pfnVectors
.global Default_Handler
/* start address for the initialization values of the .data section.
defined in linker script */
.word _sidata
/* start address for the .data section. defined in linker script */
.word _sdata
/* end address for the .data section. defined in linker script */
.word _edata
/* start address for the .bss section. defined in linker script */
.word _sbss
/* end address for the .bss section. defined in linker script */
.word _ebss
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] This is the code that gets called when the processor first
* starts execution following a reset event. Only the absolutely
* necessary set is performed, after which the application
* supplied main() routine is called.
* @param None
* @retval : None
*/
.section .text.Reset_Handler
.weak Reset_Handler
.type Reset_Handler, %function
Reset_Handler:
ldr r0, =_estack
mov sp, r0 /* set stack pointer */
/* Copy the data segment initializers from flash to SRAM */
ldr r0, =_sdata
ldr r1, =_edata
ldr r2, =_sidata
movs r3, #0
b LoopCopyDataInit
CopyDataInit:
ldr r4, [r2, r3]
str r4, [r0, r3]
adds r3, r3, #4
LoopCopyDataInit:
adds r4, r0, r3
cmp r4, r1
bcc CopyDataInit
/* Zero fill the bss segment. */
ldr r2, =_sbss
ldr r4, =_ebss
movs r3, #0
b LoopFillZerobss
FillZerobss:
str r3, [r2]
adds r2, r2, #4
LoopFillZerobss:
cmp r2, r4
bcc FillZerobss
/* Call the clock system intitialization function.*/
bl SystemInit
/* Call static constructors */
bl __libc_init_array
/* Call the application's entry point.*/
bl main
LoopForever:
b LoopForever
.size Reset_Handler, .-Reset_Handler
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] This is the code that gets called when the processor receives an
* unexpected interrupt. This simply enters an infinite loop, preserving
* the system state for examination by a debugger.
*
* @param None
* @retval : None
*/
.section .text.Default_Handler,"ax",%progbits
Default_Handler:
Infinite_Loop:
b Infinite_Loop
.size Default_Handler, .-Default_Handler
/******************************************************************************
*
* The minimal vector table for a Cortex M0. Note that the proper constructs
* must be placed on this to ensure that it ends up at physical address
* 0x0000.0000.
*
******************************************************************************/
.section .isr_vector,"a",%progbits
.type g_pfnVectors, %object
.size g_pfnVectors, .-g_pfnVectors
g_pfnVectors:
.word _estack
.word Reset_Handler
.word NMI_Handler
.word HardFault_Handler
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word SVC_Handler
.word 0
.word 0
.word PendSV_Handler
.word SysTick_Handler
.word WWDG_IRQHandler /* Window WatchDog */
.word PVD_IRQHandler /* PVD through EXTI Line detect */
.word MIPI_IRQHandler /* MIPI */
.word FLASH_IRQHandler /* FLASH */
.word RCC_IRQHandler /* RCC */
.word EXTI0_1_IRQHandler /* EXTI Line 0 and 1 */
.word EXTI2_3_IRQHandler /* EXTI Line 2 and 3 */
.word EXTI4_15_IRQHandler /* EXTI Line 4 to 15 */
.word HWDIV_IRQHandler /* HWDIV */
.word DMA1_Channel1_IRQHandler /* DMA1 Channel 1 */
.word DMA1_Channel2_3_IRQHandler /* DMA1 Channel 2 and Channel 3 */
.word DMA1_Channel4_5_IRQHandler /* DMA1 Channel 4 and Channel 5 */
.word ADC1_COMP_IRQHandler /* ADC1 & COMP */
.word TIM1_BRK_UP_TRG_COM_IRQHandler /* TIM1 Break, Update, Trigger and Commutation */
.word TIM1_CC_IRQHandler /* TIM1 Capture Compare */
.word TIM2_IRQHandler /* TIM2 */
.word TIM3_IRQHandler /* TIM3 */
.word 0 /* Reserved */
.word 0 /* Reserved */
.word TIM14_IRQHandler /* TIM14 */
.word 0 /* Reserved */
.word TIM16_IRQHandler /* TIM16 */
.word TIM17_IRQHandler /* TIM17 */
.word I2C1_IRQHandler /* I2C1 */
.word 0 /* Reserved */
.word SPI1_IRQHandler /* SPI1 */
.word SPI2_IRQHandler /* SPI2 */
.word UART1_IRQHandler /* UART1 */
.word UART2_IRQHandler /* UART2 */
.word UART3_IRQHandler /* UART3 */
.word FLEX_CAN_IRQHandler /* FLEX_CAN */
.word 0 /* Reserved */
/*******************************************************************************
*
* Provide weak aliases for each Exception handler to the Default_Handler.
* As they are weak aliases, any function with the same name will override
* this definition.
*
*******************************************************************************/
.weak NMI_Handler
.thumb_set NMI_Handler,Default_Handler
.weak HardFault_Handler
.thumb_set HardFault_Handler,Default_Handler
.weak SVC_Handler
.thumb_set SVC_Handler,Default_Handler
.weak PendSV_Handler
.thumb_set PendSV_Handler,Default_Handler
.weak SysTick_Handler
.thumb_set SysTick_Handler,Default_Handler
.weak WWDG_IRQHandler
.thumb_set WWDG_IRQHandler,Default_Handler
.weak PVD_IRQHandler
.thumb_set PVD_IRQHandler,Default_Handler
.weak MIPI_IRQHandler
.thumb_set MIPI_IRQHandler,Default_Handler
.weak FLASH_IRQHandler
.thumb_set FLASH_IRQHandler,Default_Handler
.weak RCC_IRQHandler
.thumb_set RCC_IRQHandler,Default_Handler
.weak EXTI0_1_IRQHandler
.thumb_set EXTI0_1_IRQHandler,Default_Handler
.weak EXTI2_3_IRQHandler
.thumb_set EXTI2_3_IRQHandler,Default_Handler
.weak EXTI4_15_IRQHandler
.thumb_set EXTI4_15_IRQHandler,Default_Handler
.weak HWDIV_IRQHandler
.thumb_set HWDIV_IRQHandler,Default_Handler
.weak DMA1_Channel1_IRQHandler
.thumb_set DMA1_Channel1_IRQHandler,Default_Handler
.weak DMA1_Channel2_3_IRQHandler
.thumb_set DMA1_Channel2_3_IRQHandler,Default_Handler
.weak DMA1_Channel4_5_IRQHandler
.thumb_set DMA1_Channel4_5_IRQHandler,Default_Handler
.weak ADC1_COMP_IRQHandler
.thumb_set ADC1_COMP_IRQHandler,Default_Handler
.weak TIM1_BRK_UP_TRG_COM_IRQHandler
.thumb_set TIM1_BRK_UP_TRG_COM_IRQHandler,Default_Handler
.weak TIM1_CC_IRQHandler
.thumb_set TIM1_CC_IRQHandler,Default_Handler
.weak TIM2_IRQHandler
.thumb_set TIM2_IRQHandler,Default_Handler
.weak TIM3_IRQHandler
.thumb_set TIM3_IRQHandler,Default_Handler
.weak TIM14_IRQHandler
.thumb_set TIM14_IRQHandler,Default_Handler
.weak TIM16_IRQHandler
.thumb_set TIM16_IRQHandler,Default_Handler
.weak TIM17_IRQHandler
.thumb_set TIM17_IRQHandler,Default_Handler
.weak I2C1_IRQHandler
.thumb_set I2C1_IRQHandler,Default_Handler
.weak SPI1_IRQHandler
.thumb_set SPI1_IRQHandler,Default_Handler
.weak SPI2_IRQHandler
.thumb_set SPI2_IRQHandler,Default_Handler
.weak UART1_IRQHandler
.thumb_set UART1_IRQHandler,Default_Handler
.weak UART2_IRQHandler
.thumb_set UART2_IRQHandler,Default_Handler
.weak UART3_IRQHandler
.thumb_set UART3_IRQHandler,Default_Handler
.weak FLEX_CAN_IRQHandler
.thumb_set FLEX_CAN_IRQHandler,Default_Handler
以下为修改好的 MM32F0144C6P_FLASH 文件:
/*
*****************************************************************************
**
** File : mm32_flash.ld
**
** Abstract : Linker script for MM32F0144C6P Device with
** 64KByte FLASH, 16KByte RAM
**
** Set heap size, stack size and stack location according
** to application requirements.
**
** Set memory bank area and size if external memory is used.
**
** Target : MM32
**
** Environment : VScode
**
** Distribution: The file is distributed “as is,” without any warranty
** of any kind.
*****************************************************************************
*/
/* Entry Point */
ENTRY(Reset_Handler)
/* Highest address of the user mode stack */
_estack = 0x20002000; /* end of 16K RAM */
/* Generate a link error if heap and stack don't fit into RAM */
_Min_Heap_Size = 0x200; /* required amount of heap */
_Min_Stack_Size = 0x400; /* required amount of stack */
/* Specify the memory areas */
MEMORY
{
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 64K
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 8K
}
/* Define output sections */
SECTIONS
{
/* The startup code goes first into FLASH */
.isr_vector :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >FLASH
/* The program code and other data goes into FLASH */
.text :
{
. = ALIGN(4);
*(.text) /* .text sections (code) */
*(.text*) /* .text* sections (code) */
*(.glue_7) /* glue arm to thumb code */
*(.glue_7t) /* glue thumb to arm code */
*(.eh_frame)
KEEP (*(.init))
KEEP (*(.fini))
. = ALIGN(4);
_etext = .; /* define a global symbols at end of code */
} >FLASH
/* Constant data goes into FLASH */
.rodata :
{
. = ALIGN(4);
*(.rodata) /* .rodata sections (constants, strings, etc.) */
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(4);
} >FLASH
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
.ARM : {
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
} >FLASH
.preinit_array :
{
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array*))
PROVIDE_HIDDEN (__preinit_array_end = .);
} >FLASH
.init_array :
{
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array*))
PROVIDE_HIDDEN (__init_array_end = .);
} >FLASH
.fini_array :
{
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT(.fini_array.*)))
KEEP (*(.fini_array*))
PROVIDE_HIDDEN (__fini_array_end = .);
} >FLASH
/* used by the startup to initialize data */
_sidata = LOADADDR(.data);
/* Initialized data sections goes into RAM, load LMA copy after code */
.data :
{
. = ALIGN(4);
_sdata = .; /* create a global symbol at data start */
*(.data) /* .data sections */
*(.data*) /* .data* sections */
. = ALIGN(4);
_edata = .; /* define a global symbol at data end */
} >RAM AT> FLASH
/* Uninitialized data section */
. = ALIGN(4);
.bss :
{
/* This is used by the startup in order to initialize the .bss secion */
_sbss = .; /* define a global symbol at bss start */
__bss_start__ = _sbss;
*(.bss)
*(.bss*)
*(COMMON)
. = ALIGN(4);
_ebss = .; /* define a global symbol at bss end */
__bss_end__ = _ebss;
} >RAM
/* User_heap_stack section, used to check that there is enough RAM left */
._user_heap_stack :
{
. = ALIGN(4);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(4);
} >RAM
/* Remove information from the standard libraries */
/DISCARD/ :
{
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
}
.ARM.attributes 0 : { *(.ARM.attributes) }
}
四、着手搭建环境
ARM GCC GNU tool gcc.exe 安装路径
KEIL MDK UV4.exe 安装路径和 ARM TOOLS.INI 文件路径(如果用到 AC5/AC6 作为编译器的话那就需要填写)
J-Link GDBserver 安装路径和 J-Link Device xml 路径
串口默认设置信息
void vprint(const char *fmt, va_list argp)
{
char string[200];
if(0 < vsprintf(string,fmt,argp)) // build string
{
for (int i = 0; i < strlen(string); i++) {
while ((UART1->CSR & UART_IT_TXIEN) == 0)
; // The loop is sent until it is finished
UART1->TDR = (u8)string[i];
}
}
}
void my_printf(const char *fmt, ...) // custom printf() function
{
va_list argp;
va_start(argp, fmt);
vprint(fmt, argp);
va_end(argp);
}
源码资料点击“阅读原文”