Generic multi purpose rolling code remote control software - Page 1
Forum section: electronics / repair

author: giovy87
author_rank: Newbie
timestamp: May 16, 2021, 07:22:21 pm
content: Hi everyone,I'm trying to repair a cheap rolling code remote control that i damaged during repair injecting a greater supply voltage than expected (3,3V), unfortunately just when I was working on this remote control the power supply went damaged.Otherwise the embedded microcontroller an STM8L151G6 was partially damaged and it assorbs about 600ma even if I don't press any button. If I use my bench power supply (after that I repaired it) I was able to test it and it worked fine.So I decided to change the microcontroller and now when I press any button I cannot see the red light flashing as usual.I think that the reason is that i bought a clean microcontroller without its own software so it quite normal that the remote control is not working.With the new controller the abnormal absorption gone but unfortunately the remote control is not working.I'm wondering if I can extract the software from the damaged controller or another working one remote control that I already own.Just to figureout what controller is I attach an image of this remote controller:ST chip datasheethttps://redirect.viglink.com/?format=go&jsonp=vglnk_162119267821010&key=e4fd14f5d7f2bb6d80b8f8da1354718c&libId=korjrks80102h4tn000DLfvle8oin&subId=3d5b2ff3569674f64d6343a5cb85a821&loc=https%3A%2F%2Fwww.pieraisa.it%2Fforum%2Fviewtopic.php%3Ff%3D1%26t%3D4133%26sid%3Dad9dd645da9d407d53aa53f66cdbe3c2&v=1&out=https%3A%2F%2Fwww.st.com%2Fen%2Fmicrocontrollers-microprocessors%2Fstm8l151g6.html&ref=https%3A%2F%2Fwww.pieraisa.it%2Fforum%2Fviewforum.php%3Ff%3D1%26sid%3Dad9dd645da9d407d53aa53f66cdbe3c2&title=Riparazione%20Telecomando%20multi%20funzione%20-%20Pier%20Aisa%20Electronic%20Enthusiasts%20Community%20Forum&txt=https%3A%2F%2Fwww.st.com%2Fen%2Fmicrocontrollers-%20...%20151g6.htmlThe implementation is using an QFPN 28pin STM8L151G6This is an example of my remote controlhttps://www.ebay.it/itm/154414620345?chn=ps&norover=1&mkevt=1&mkrid=724-128315-5854-1&mkcid=2&itemid=154414620345&targetid=883758966886&device=c&mktype=pla&googleloc=1008463&poi=&campaignid=9556812461&mkgroupid=99670900738&rlsatarget=pla-883758966886&abcId=1145978&merchantid=6772416&gclid=Cj0KCQjw1a6EBhC0ARIsAOiTkrE2IgorKPcJmi4VUsGEIfdvlZaoIQ_wA_DEl9IUu-yYAOZ1oOfuULwaAqF4EALw_wcBI know that is a cheap item and maybe the repair attemp is harder that buying a new one, but I would like to lear more about this kind of stuff especially how to program it.Thanks in advice to anyone !

author: ledtester
author_rank: Super Contributor
timestamp: May 16, 2021, 08:09:44 pm
content: Here is a cleaner link to the "ST chip datasheet":https://www.pieraisa.it/forum/viewtopic.php?f=1&t=4133&sid=ad9dd645da9d407d53aa53f66cdbe3c2Please don't use redirect.viglink.com urls -- they get flagged as ad/tracking links.Here's a direct link to the ST MCU datasheet:https://www.st.com/en/microcontrollers-microprocessors/stm8l151g6.html

author: fzabkar
author_rank: Super Contributor
timestamp: May 17, 2021, 07:10:42 am
content: Quote from: ledtester on May 16, 2021, 08:09:44 pmActually that link includes an unnecessary session ID. This is all you need:https://www.pieraisa.it/forum/viewtopic.php?f=1&t=4133

author: giovy87
author_rank: Newbie
timestamp: May 22, 2021, 07:48:52 am
content: Hi guys,thanks for your reply i will read it and i will try to understand how to extract current software and reflash it ... but first of all my hypothesis is correct ?any suggestion on tool that can assist me during this experiment ?