Hi Oak, For an accurate timer at user level you can use the gpt driver here : https://github.com/seL4/seL4_libs/blob/master/libsel4platsupport/src/mach/im... Note that a while ago we combined a lot of our library repos, so libsel4platsupport is not part of the larger seL4_libs. The stand alone version is no longer updated. Cheers, Anna. On 29/06/2016 1:39 pm, Norrathep Rattanavipanon wrote: Thanks Anna. We are looking for a way to get timestamp (wall clock) that can be used in the userland for authenticating an incoming message from remote server. I see that the real-time clock driver is not implemented yet but an accurate timer would do the job too. So any recommendation on which timer implementation to use? Would this one work? https://github.com/seL4/libsel4platsupport/blob/master/src/mach/imx/timer.c Thanks, Oak On Tue, Jun 28, 2016 at 5:17 PM, Norrathep Rattanavipanon <<mailto:nrattana@uci.edu>nrattana@uci.edu<mailto:nrattana@uci.edu>> wrote: Hi, I was wondering if there's any real time clock implementation for I.MX6 in sel4. And if there isnt any, what would be the best way to use a timer in sel4 (since I saw many implementations of those)? through sel4platsupport_get_default_timer? Best, Oak -- Norrathep (Oak) Rattanavipanon M.S. in Computer Science University of California - Irvine -- Norrathep (Oak) Rattanavipanon M.S. in Computer Science University of California - Irvine _______________________________________________ Devel mailing list Devel@sel4.systems<mailto:Devel@sel4.systems> https://sel4.systems/lists/listinfo/devel -- Anna Lyons Kernel engineer / PhD Student DATA61 | CSIRO E anna.lyons@nicta.com.au<mailto:anna.lyons@nicta.com.au> www.data61.csiro.au<http://www.data61.csiro.au> CSIRO's Digital Productivity business unit and NICTA have joined forces to create digital powerhouse Data61 ________________________________ The information in this e-mail may be confidential and subject to legal professional privilege and/or copyright. National ICT Australia Limited accepts no liability for any damage caused by this email or its attachments.