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I'm on a mission from God to permit updating firmware on F5xx, F6xx, FRxx, etc. using TI's BSL-Scripter software and a generic USB-to-Serial adapter like the CP2102, which could be embedded in a project. As things stand, Scripter requires either a "Rocket" programming device or an MSP-FET because it is those devices which actually generate the pattern on /Reset and TEST that invokes BSL on the target device. I've written a short program that produces the special pattern on DTR and RTS of a CP2102, but when I run Scripter immediately thereafter, it brings both of those lines low and keeps them there. Of course that puts the target device into /Reset, so not much is gonna get flashed that way. I need to modify Scripter to add a MODE line or command line option called "INVOKE", which if present would cause Scripter to generate the required pattern on DTR and RTS itself, and leave them in the correct state. before doing whatever else it's going to do. The source code is available, but it's way over my head. It requires the Microsoft 2013 Visual C++ complier, and a bunch of third party stuff, including something called Boost. I have none of that, and don't know how I would modify the code. I did it for BSLDEMO, but that was plain C, with no third party stuff. So I wondered if anyone here had ever gotten Scripter to compile from the TI source, and if so, if he would like to compile a version for me (assuming I can figure out what to change). The only code I can find that deals with DTR and RTS in the source is in TestReset.h, but I don't understand it.
A new WIN32 version of BSL-Scripter.exe has been compiled which allows BSL flashing using generic USB-to-UART adapters such as the FT232, CP2102 and CH430 as the hardware interface. It can be used with MSP430 F5xx F6xx, and FRxx parts with UART BSL. This version has a new MODE line option "INVOKE", which causes Scripter to directly generate the BSL hardware invocation sequence on the adapter's DTR and RTS outputs, which in turn are connected to the /Reset and Test pins on the target device. It produces the pattern shown in Figure 2 of slau319w.pdf and slau550s.pdf, which is normally generated by the Rocket or MSP-FET. If the INVOKE option is used, you must include the PARITY option as well. I have successfully tested the new Scripter on an MSP430FR2311 using all three adapter types. It would be helpful if others could test other relevant MSP430 parts and report the results. This has finally come about as a result of the generous efforts nagaokanchi, also known as "drcrane" on Github, who not only got TI's source code to compile with new versions of all the dependencies, but also navigated the mysteries of BOOST to control the DTR and RTS lines. The new Scripter and a related Instructions file are contained in "BSL-Scripter-v3.4.1.zip" in the Releases folder of his repository, which also contains the source code: https://github.com/drcrane/bslscripter-vs2017/releases For those who must run an official TI version of Scripter, I will leave on my Github the now-deprecated kludge option for using these adapters with the official Scripter, but of course it requires either manual intervention or an additional circuit: https://github.com/gbhug5a/CP2102-with-BSL-Scripter-for-MSP430 And finally, a reminder that the older MSP430 parts which use BSLDEMO2 for flashing, including the F1xx, F2xx, F4xx, and G2xx parts with BSL, can also be flashed with these adapters if a modified version of BSLDEMO is used, such as the "BSLDEMO-2.01C.exe" found in my other repo: https://github.com/gbhug5a/MSP430-BSL Texas Instruments has neither reviewed nor approved any of this. But I continue to hope TI will officially make similar changes to BSL-Scripter and BSLDEMO to support the use of these generic adapters.
I don't know if this has any application for Energia, but might be of use to someone at some point. I've been working on a way to embed a generic USB-to-UART adapter like the CP2102, FT232 or CH340 in an MSP340 project so firmware can be updated without having to buy a Launchpad. The newer MSP430 parts presented a problem because BSL-Scripter, TI's software for BSL flashing for those parts, doesn't transmit the special invoke pattern on /Reset and Test. Instead, it just brings both lines low, which messes things up. I gave up on trying to recompile Scripter, but I've written a Windows program that generates the pattern, and developed methods to disconnect DTR from /Reset after the pattern has invoked BSL, but before BSL-Scripter is run, which allows flashing to proceed with /Reset high. A full explanation, source code, executable, and schematic are in my Github repo. It all seems to work, at least with an FR2311 under Windows 7. https://github.com/gbhug5a/CP2102-with-BSL-Scripter-for-MSP430