Thanks a lot! Do you have by any change an sample project that uses CAmkES on UART1? Something I could also try on my own?
Also, what other devices are you supporting? Do you have support for the eth by any chance? Thanks a lot! Julien. On Fri, Jun 10, 2016 at 7:06 PM, Jeff Hieb <[email protected]> wrote: > Julien > > I am using UART1 (and 2 and 4) on BBB with Camkes. > > I think you need to set the pin mux on the board. Linux does this with > something called device tree overlays ( > https://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree/device-tree-overlays). > > > > Sel4 and Camkes don't provide away to set the mux for the pins (that I am > aware of), So you have do it before booting the kernel. > > I haven't found a particularly clean way to do this yet. Currently I am > just using UBoot to set the pin muxes. > > Before booting your kernel, at the UBoot command line try these two lines: > > mw.l 0x44E10980 0x30 > > mw.l 0x44E10984 0x00 > > > This should correctly turn on the UART 1 Rx and Tx lines. > > > Also. I you want to turn on the fifos, the reference manual seems to > gloss over part of how to do that. Here is my code to > > // config to fifo with interrupt but no DMA > *UART_REG(LCR) = 0xBF; > *UART_REG(EFR) = 0x10; > *UART_REG(LCR) = 0x80; > *UART_REG(SCR) = 0x01; > *UART_REG(MCR) = 0x40; > *UART_REG(TLR) = 0x11; > > *UART_REG(MCR) = 0x00; > *UART_REG(FCR) = 0x07; > > > > > Jeffrey L. Hieb > Department of Engineering Fundamentals > University of Louisville > Louisville Kentucky 40292(502) 852 0465 > > On 6/10/2016 3:05 PM, Julien Delange wrote: > > Yep, I did this. The code boots correctly and the device is recognized. > The serial is still not working, I assume this is a matter of code right > now. > > Thanks! > > Julien, > > On Fri, Jun 10, 2016 at 2:57 PM, Tim Newsham <[email protected]> > wrote: > >> I think you need to add a line in >> kernel/src/plat/am335x/machine/hardware.c >> for this. >> >> On Fri, Jun 10, 2016 at 8:37 AM, Julien Delange < >> <[email protected]>[email protected]> wrote: >> >>> I am using the second serial interface of the beaglebone black. >>> According to the source code (in >>> libsel4platsupport/plat_include/am335x/sel4platsupport/plat/hw/soc_AM335x.h), >>> the address is 0x48022000). The following line is found in the source >>> >>> #define SOC_UART_1_REGS (0x48022000) >>> >>> So, in CAmkES, I configure the hardware component that represents the >>> serial hardware component with the following attributes: >>> >>> drv.mem_attributes = "0x48022000:0x1000"; >>> >>> The application compiles fine. However, when launching the image on the >>> target, I have the following issue. Any idea about how to solve this? Does >>> anybody successfully used UART1 on the beaglebone black? Or have any >>> idea/suggestion to investigate? >>> >>> Thanks. >>> >>> Julien. >>> >>> >>> Creating object conn1_frame__timer_0 in slot 728, from untyped 29b... >>> device frame, paddr = 0x48040000, size = 12 bits >>> Creating object conn2_frame__Cons_PingMe_0 in slot 729, from untyped >>> 29b... >>> device frame, paddr = 0x48022000, size = 12 bits >>> >>> capDL-loader :: << Error: Failed to find device frame at paddr = >>> 0x48022000 >>> >> >>> Ignoring call to sys_rt_sigprocmask >>> Ignoring call to sys_gettid >>> sys_tkill assuming self kill >>> >>> >>> _______________________________________________ >>> Devel mailing list >>> [email protected] >>> https://sel4.systems/lists/listinfo/devel >>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__sel4.systems_lists_listinfo_devel&d=AwMFaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=vxDfYJYhOaaufTHzA3yxVVn--9Yf3Ig5TrUiTFGL8pc&m=MGwV9yE3Lj-QU0UntmkIzrms26F8fDzA5Qzvk9IrTS0&s=DaDr7rfeonVlo85YWw34Fz637peI234w5Pt-qM3RfrY&e=> >>> >>> >> >> >> -- >> Tim Newsham | >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.thenewsh.com_-7Enewsham&d=AwMFaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=vxDfYJYhOaaufTHzA3yxVVn--9Yf3Ig5TrUiTFGL8pc&m=MGwV9yE3Lj-QU0UntmkIzrms26F8fDzA5Qzvk9IrTS0&s=Cjc7dPZwf0158fR2amZ2xCr_dDFoLAcPjjHnVtmNCZk&e=> >> www.thenewsh.com/~newsham | @newshtwit | thenewsh.blogspot.com >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__thenewsh.blogspot.com&d=AwMFaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=vxDfYJYhOaaufTHzA3yxVVn--9Yf3Ig5TrUiTFGL8pc&m=MGwV9yE3Lj-QU0UntmkIzrms26F8fDzA5Qzvk9IrTS0&s=DIUb0PJN4Ew4zS3H66GvnNKjVk9AjcRLJtgvpcF_vm8&e=> >> > > > > _______________________________________________ > Devel mailing [email protected] > https://urldefense.proofpoint.com/v2/url?u=https-3A__sel4.systems_lists_listinfo_devel&d=AwICAg&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=vxDfYJYhOaaufTHzA3yxVVn--9Yf3Ig5TrUiTFGL8pc&m=MGwV9yE3Lj-QU0UntmkIzrms26F8fDzA5Qzvk9IrTS0&s=DaDr7rfeonVlo85YWw34Fz637peI234w5Pt-qM3RfrY&e= > > > > _______________________________________________ > Devel mailing list > [email protected] > https://sel4.systems/lists/listinfo/devel > >
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