Comment: 1000/CLK_FREQ will evaluate to 10 when CLK_FREQ=100. That
crazy binary value you see is 0b1010 = 0d10. Looks like a variable
casting issue
On 07/20/2012 02:39 PM, G Jones wrote:
Some more information:
The only place the problem value is shown is in
XPS_ROACH2_base/synthesis/infrastructure_inst_wrapper_xst.srp
Elaborating module
<MMCM_BASE(BANDWIDTH="low",CLKFBOUT_MULT_F=6,CLKFBOUT_PHASE=0.0,CLKIN1_PERIOD=32'sb01010,CLKOUT0_DIVIDE_F=1,CLKOUT0_DUTY_CYCLE=0.5,CLKOUT1_DUTY_CYCLE=0.5,CLKOUT2_DUTY_CYCLE=0.5,CLKOUT3_DUTY_CYCLE=0.5,CLKOUT4_DUTY_CYCLE=0.5,CLKOUT5_DUTY_CYCLE=0.5,CLKOUT6_DUTY_CYCLE=0.5,CLKOUT0_PHASE=0.0,CLKOUT1_PHASE=0.0,CLKOUT2_PHASE=0.0,CLKOUT3_PHASE=0,CLKOUT4_PHASE=0,CLKOUT5_PHASE=0,CLKOUT6_PHASE=0.0,CLKOUT1_DIVIDE=6,CLKOUT2_DIVIDE=6,CLKOUT3_DIVIDE=32'sb011,CLKOUT4_DIVIDE=32'sb011,CLKOUT5_DIVIDE=32'sb011,CLKOUT4_CASCADE="FALSE",CLOCK_HOLD="FALSE",DIVCLK_DIVIDE=1,REF_JITTER1=0.0,STARTUP_WAIT="FALSE")>.
In the verilog file, CLKIN1_PERIOD is set to (1000/CLK_FREQ) and the
CLK_FREQ parameter defaults to 100.
The value of CLK_FREQ passed from the .mhs is also 100
In the data/roach_infrastructure_v2_1_0.mpd, CLK_FREQ is set to 100.
The data type is indicated as integer which is a bit suspicous, but
it's the same in the "working" casper-astro/mlib_devel
Glenn
On Fri, Jul 20, 2012 at 2:17 PM, G Jones <[email protected]> wrote:
Yep, I agree again, but the MHS file that sets the parameters (as far
as I remember) looks OK too. I'll try grepping through the build
directory to see if I can figure out where the crazy value is coming
from.
On Fri, Jul 20, 2012 at 2:15 PM, Ryan Monroe <[email protected]> wrote:
Ahem, by 'log file', I meant 'HDL file'.
On 07/20/2012 02:13 PM, G Jones wrote:
I agree, but the mystery is how that crazy binary value is getting in
there...
I should also note that I was able to build ROACH II designs with the
casper-astro/mlib_devel, but the resulting boffiles caused a kernel
panic sort of error when reading the registers. Using a known good
boffile from Rurik showed that the ROACH II itself was not the cause
of the problem.
Glenn
On Fri, Jul 20, 2012 at 2:09 PM, Ryan Monroe <[email protected]>
wrote:
Hey Glenn,
I would guess that the HDL is wrong. Reference the ISE 13.4 / Virtex 6
HDL
libraries guide, page 249:
http://www.xilinx.com/support/documentation/sw_manuals/xilinx13_4/virtex6_hdl.pdf
Looks like it wants a float, representing the input period here.
Definitely
not a binary value...
But I haven't looked at the HDL myself, I'm just going off of the report
in
this email. Take this all with a pinch of salt.
Anyways, how's life? I haven't seen you in awhile--don't I still owe you
a
beer? :-)
--Ryan
On 07/20/2012 01:51 PM, G Jones wrote:
Hello,
I am running into a problem (error message below) when trying to build
simple designs for the ROACH II. I am using the ska-sa/mlib_devel
freshly cloned from github. I have double checked that my paths only
point to this version. I am using ISE 13.4 and MATLAB 2011a. The
design is very simple, just a blinking LED and a software register. I
initially tried clocking off of sys_clk at 100 MHz, but found the same
problem when I added an ADC to the design and selected adc0_clk at 200
MHz.
The problem occurs during ngdbuild of system.ngd
Mark Wagner says he has also seen this problem.
I checked the roach_infrastructure.v code in the pcore and it looks
reasonable to me.
Does anyone have any suggestions?
Thanks,
Glenn
Annotating constraints to design from ucf file "system.ucf" ...
Resolving constraint associations...
Checking Constraint Associations...
INFO:ConstraintSystem:178 - TNM 'sys_clk_n', used in period
specification
'TS_sys_clk_n', was traced into MMCM_ADV instance
infrastructure_inst/MMCM_BASE_clk_200_inst. The following new TNM
groups and
period specifications were generated at the MMCM_ADV output(s):
CLKOUT1: <TIMESPEC
TS_infrastructure_inst_infrastructure_inst_sys_clk2x_mmcm
= PERIOD "infrastructure_inst_infrastructure_inst_sys_clk2x_mmcm"
TS_sys_clk_n HIGH 50%>
INFO:ConstraintSystem:178 - TNM 'sys_clk_n', used in period
specification
'TS_sys_clk_n', was traced into MMCM_ADV instance
infrastructure_inst/MMCM_BASE_inst. The following new TNM groups
and
period
specifications were generated at the MMCM_ADV output(s):
CLKOUT1: <TIMESPEC
TS_infrastructure_inst_infrastructure_inst_sys_clk_mmcm =
PERIOD "infrastructure_inst_infrastructure_inst_sys_clk_mmcm"
TS_sys_clk_n
HIGH 50%>
INFO:ConstraintSystem - The Period constraint <PERIOD = 5 ns ;>
[system.ucf(393)], is specified using the Net Period method which
is
not
recommended. Please use the Timespec PERIOD method.
INFO:ConstraintSystem - The Period constraint <PERIOD = 5 ns ;>
[system.ucf(394)], is specified using the Net Period method which
is
not
recommended. Please use the Timespec PERIOD method.
Done...
ERROR:LIT:374 - Attribute CLKIN1_PERIOD on MMCM_ADV instance
"infrastructure_inst/infrastructure_inst/MMCM_BASE_inst" has
invalid
value
"64'SB0000000000000000000000000000000000000000000000000000000000001010".
The
CLKIN1_PERIOD attribute should have a real number, followed by
optional time
or frequency units; nS are assumed if no units are given.
WARNING:NgdBuild:1440 - User specified non-default attribute value
(64'SB0000000000000000000000000000000000000000000000000000000000001010)
was
detected for the CLKIN1_PERIOD attribute on MMCM
"infrastructure_inst/MMCM_BASE_inst". This does not match the
PERIOD
constraint value (100 MHz.). The uncertainty calculation will use
the
PERIOD
constraint value. This could result in incorrect uncertainty
calculated for
MMCM output clocks.
Checking expanded design ...
