Hi Alexandre, thank you for your comments. Since failure behaviour is not specified in the Maxim datasheet, the gracious way to handle this would be a retry counter, as that would also solve the problem of a DS1307 that for some reason doesn't set the CH bit (maybe an internal oscillator failure?). A similar erratic behavior happened to me once, due to an unstable power supply to the RTC. IMHO, I think that a hardware failure and/or a problematic I2C driver should not produce an infinite loop - be it fatal or not. I already solved my boot issue with this patch, and I will ship it with the devices I sell, but may I ask you what approach would you recommend instead of hctosys? I tried looking online for solutions but couldn't find an "official" one. I will gladly investigate better approaches if available. Thank you, Best regards Cristiano Griletti - Mastro Gippo
