Hello, Please excuse me if this exact question has been asked already but I haven't found anything as of yet.
I am trying to build a mobile phone system and am designing a board to act as an intermediate cape between my beaglebone and this LCD cape: https://www.sparkfun.com/products/12085 Being that this is a mock mobile application, I would like to keep the design lightweight and use a small battery. I have a 3.7V 4500mAh Li-ion from an android cellphone that I would like to use. What I would like to do is: - Use the on board TPS65217 along with modified code to provide system power (3V3). - Charge the li-ion battery via 65217 when barrel jack is connected. - Connect the V_BAT net to power the sim900 module that I'm using. - Power LCD cape' My question is in a way to interface all this together safely. The missing link in my design is a way to get the SYS_5V needed by the LCD cape. I would only like the 5V rail after the system has booted (MOSFET via GPIO maybe?) and power it down fully before the system powers down. Maybe I need to RTFM more, but some direction or input would be greatly appreciated. Thank you -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
