keil下载程序具体过程：概述

一、前言

keil下载程序具体过程将由一系列的博客组成，将深入探讨keil这种IDE下载镜像文件时具体做了哪些事情。我们平常下载镜像的时候，只是点击了一下Download按钮，剩下的都由keil替代我们完成了。本系列博客将揭示这一过程，keil到底做了哪些工作，以及牵扯到的具体技术。

二、keil下载程序的配置过程

在我们新建一份工程，写完hello world程序之后，会去配置一下下载器、选择下载接口以及下载算法文件，如下图所示。

按照上述五个步骤配置好下载器之后（博主使用的是jlink、swd接口），就可以点击Dolwnload下载程序了。

下载程序的log如下。

Load "C:\\...\\project\\MDK-ARM\\Objects\\Project.axf"
Set JLink Project File to "C:\...\project\MDK-ARM\JLinkSettings.ini"
* JLink Info: Device "CORTEX-M4" selected.

JLink info:
------------
DLL: V7.22b, compiled Jun 17 2021 17:22:49
Firmware: J-Link ARM-OB STM32 compiled Aug 22 2012 19:52:04
Hardware: V7.00
S/N : 20090937
Feature(s) : RDI,FlashDL,FlashBP,JFlash,GDBFull

* JLink Info: Found SW-DP with ID 0x2BA01477
* JLink Info: DPv0 detected
* JLink Info: Scanning AP map to find all available APs
* JLink Info: AP[1]: Stopped AP scan as end of AP map has been reached
* JLink Info: AP[0]: AHB-AP (IDR: 0x24770011)
* JLink Info: Iterating through AP map to find AHB-AP to use
* JLink Info: AP[0]: Core found
* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000
* JLink Info: CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
* JLink Info: Found Cortex-M4 r0p1, Little endian.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: CoreSight components:
* JLink Info: ROMTbl[0] @ E00FF000
* JLink Info: ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
* JLink Info: ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
* JLink Info: ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
* JLink Info: ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
* JLink Info: ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTableAddr = 0xE00FF000
* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.
* JLink Info: Reset: Reset device via AIRCR.SYSRESETREQ.

Target info:
------------
Device: ARMCM4_FP
VTarget = 3.300V
State of Pins:
TCK: 0, TDI: 0, TDO: 1, TMS: 0, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints: 4
JTAG speed: 4000 kHz

Erase Done.
Programming Done.
Verify OK.
* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.
* JLink Info: Reset: Reset device via AIRCR.SYSRESETREQ.
Application running ...
Flash Load finished at 17:51:38