Very helpless, Stm32l4 belongs to the relatively new chip, so a lot of development tools need to upgrade, before with Keil and Coocox, but now can not use, And then found that Keil requirements are more than 5.16 version, before the installation of a KEIL5.11, tragedy, now the latest is KEIL5.18, for me, there is no csdn points, so no download cracker, this is tragic .... So can only hope to Coocox, and then download the latest Coocox version:2.0.3, found that the compilation was successful, but the download failed, just bought the development Board can not even the most basic download can not test it, and just want to try to download the function, Downloaded a tool from the official website (ST toolset), and then found that this is a good thing AH!!!
This is something similar to the J-link downloader, do not take offense, may be the first time with st-link things.
ST Visual Programmer
650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/7E/5A/wKioL1b9J0qjP1-1AAffhon3Ft4595.jpg "title=" St Vitual Programer. JPG "alt=" wkiol1b9j0qjp1-1aaffhon3ft4595.jpg "/> This thing can first read STM32 inside the program back, and then can save as a *.hex file.
So I read the factory FW back to save, and then erase the chip.
Finally burned the FW back and succeeded. At this point, the burn-write function verification is complete
STM32L4RGT6 Burning Writing