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Merge pull request #838 from jersey99/ussysmon 

Ussysmon: SYSMONE1 for US devices
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enjoy-digital 2021-03-15 10:19:54 +01:00 committed by GitHub
parent 13e13a094c 6bb0541f9a
commit 367b510590
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 137 additions and 23 deletions
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160
litex/soc/cores/xadc.py
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@ -14,7 +14,43 @@ from litex.soc.interconnect.csr import *
analog_layout = [("vauxp", 16), ("vauxn", 16), ("vp", 1), ("vn", 1)]
class XADC(Module, AutoCSR):
class _XADC(Module, AutoCSR):
def expose_drp(self):
self.drp_enable = CSRStorage() # Set to 1 to use DRP and disable auto-sampling
self.drp_read = CSR()
self.drp_write = CSR()
self.drp_drdy = CSRStatus()
self.drp_adr = CSRStorage(self.dadr_size, reset_less=True)
self.drp_dat_w = CSRStorage(16, reset_less=True)
self.drp_dat_r = CSRStatus(16)
# # #
den_pipe = Signal() # add a register to ease timing closure of den
self.comb += [
self.di.eq(self.drp_dat_w.storage),
self.drp_dat_r.status.eq(self.do),
If(self.drp_en,
self.den.eq(den_pipe),
self.dadr.eq(self.drp_adr.storage),
)
]
self.sync += [
self.dwe.eq(self.drp_write.re),
self.drp_en.eq(self.drp_enable.storage),
den_pipe.eq(self.drp_read.re | self.drp_write.re),
If(self.drp_read.re | self.drp_write.re,
self.drp_drdy.status.eq(0)
).Elif(self.drdy,
self.drp_drdy.status.eq(1)
)
]
class XADC(_XADC, AutoCSR):
dadr_size = 7
def __init__(self, analog_pads=None):
# Temperature
self.temperature = CSRStatus(12, description="""Raw Temperature value from XADC.\n
@ -112,34 +148,112 @@ class XADC(Module, AutoCSR):
self.eos.status.eq((self.eos.status & ~self.eos.we) | eos),
]
def expose_drp(self):
self.drp_enable = CSRStorage() # Set to 1 to use DRP and disable auto-sampling
self.drp_read = CSR()
self.drp_write = CSR()
self.drp_drdy = CSRStatus()
self.drp_adr = CSRStorage(7, reset_less=True)
self.drp_dat_w = CSRStorage(16, reset_less=True)
self.drp_dat_r = CSRStatus(16)
class USSYSMON(_XADC, AutoCSR):
dadr_size = 8
def __init__(self, analog_pads=None):
# Temperature
self.temperature = CSRStatus(10, description="""Raw Temperature value from SYSMONE1.\n
Temperature (°C) = ``Value`` x 503.975 / 1024 - 273.15.""")
# Voltages
self.vccint = CSRStatus(10, description="""Raw VCCINT value from SYSMONE1.\n
VCCINT (V) = ``Value`` x 3 / 1024.""")
self.vccaux = CSRStatus(10, description="""Raw VCCAUX value from SYSMONE1.\n
VCCAUX (V) = ``Value`` x 3 / 1024.""")
self.vccbram = CSRStatus(10, description="""Raw VCCBRAM value from SYSMONE1.\n
VCCBRAM (V) = ``Value`` x 3 / 1024.""")
self.vccpsintlp = CSRStatus(10, description="""Raw VCCPSINTLP value from SYSMONE1.\n
VCCPSINTLP (V) = ``Value`` x 3 / 1024.""")
self.vccpsintfp = CSRStatus(10, description="""Raw VCCPSINTFP value from SYSMONE1.\n
VCCPSINTFP (V) = ``Value`` x 3 / 1024.""")
self.vccpsaux = CSRStatus(10, description="""Raw VCCPSAUX value from SYSMONE1.\n
VCCPSAUX (V) = ``Value`` x 3 / 1024.""")
# End of Convertion/Sequence
self.eoc = CSRStatus(description="End of Conversion Status, ``1``: Conversion Done.")
self.eos = CSRStatus(description="End of Sequence Status, ``1``: Sequence Done.")
# Alarms
self.alarm = Signal(16)
self.ot = Signal()
# # #
den_pipe = Signal() # add a register to ease timing closure of den
busy = Signal()
channel = Signal(self.dadr_size)
eoc = Signal()
eos = Signal()
# SYSMONE1 instance ----------------------------------------------------------------------------
self.dwe = Signal()
self.den = Signal()
self.drdy = Signal()
self.dadr = Signal(self.dadr_size)
self.di = Signal(16)
self.do = Signal(16)
self.drp_en = Signal()
self.specials += Instance("SYSMONE1",
# From ug580
p_INIT_40=0x9000, p_INIT_41=0x2fd0, p_INIT_42=0x1000,
p_INIT_46=0x000f, p_INIT_48=0x4701, p_INIT_49=0x000f,
p_INIT_47=0x000f, p_INIT_4A=0x47e0, p_INIT_4B=0x0000,
p_INIT_4C=0x0000, p_INIT_4D=0x0000,
p_INIT_4E=0x0000, p_INIT_4F=0x0000,
p_INIT_50=0xb5ed, p_INIT_51=0x5999,
p_INIT_52=0xa147, p_INIT_53=0xdddd,
p_INIT_54=0xa93a, p_INIT_55=0x5111,
p_INIT_56=0x91eb, p_INIT_57=0xae4e,
p_INIT_58=0x5999, p_INIT_5C=0x5111,
o_ALM = self.alarm,
o_OT = self.ot,
o_BUSY = busy,
o_CHANNEL = channel,
o_EOC = eoc,
o_EOS = eos,
i_VAUXP = 0 if analog_pads is None else analog_pads.vauxp,
i_VAUXN = 0 if analog_pads is None else analog_pads.vauxn,
i_VP = 0 if analog_pads is None else analog_pads.vp,
i_VN = 0 if analog_pads is None else analog_pads.vn,
i_CONVST = 0,
i_CONVSTCLK = 0,
i_RESET = ResetSignal(),
i_DCLK = ClockSignal(),
i_DWE = self.dwe,
i_DEN = self.den,
o_DRDY = self.drdy,
i_DADDR = self.dadr,
i_DI = self.di,
o_DO = self.do
)
self.comb += [
self.di.eq(self.drp_dat_w.storage),
self.drp_dat_r.status.eq(self.do),
If(self.drp_en,
self.den.eq(den_pipe),
self.dadr.eq(self.drp_adr.storage),
If(~self.drp_en,
self.den.eq(eoc),
self.dadr.eq(channel),
)
]
# Channels update --------------------------------------------------------------------------
channels = {
0: self.temperature,
1: self.vccint,
2: self.vccaux,
6: self.vccbram,
0xd: self.vccpsintlp,
0xe: self.vccpsintfp,
0xf: self.vccpsaux,
}
self.sync += [
self.dwe.eq(self.drp_write.re),
self.drp_en.eq(self.drp_enable.storage),
den_pipe.eq(self.drp_read.re | self.drp_write.re),
If(self.drp_read.re | self.drp_write.re,
self.drp_drdy.status.eq(0)
).Elif(self.drdy,
self.drp_drdy.status.eq(1)
)
If(self.drdy,
Case(channel, dict(
(k, v.status.eq((self.do >> 6) & 0x3ff))
for k, v in channels.items()))
)
]
# End of Convertion/Sequence update --------------------------------------------------------
self.sync += [
self.eoc.status.eq((self.eoc.status & ~self.eoc.we) | eoc),
self.eos.status.eq((self.eos.status & ~self.eos.we) | eos),
]