CoLinkEx is a low-cost debug adapter for ARM Cortex-M based microcontrollers. It is hardware open, supports flash programming and online debugging under JTAG and SWD protocols, and works with CoIDE and CoFlash. It is an upgraded version of Colink. Wiki
CooCox CoLinkEx is hardware open , and it is quite easy to do it yourself . We have provided all the information necessary for you to DIY.