diff --git a/litex/soc/cores/xadc.py b/litex/soc/cores/xadc.py index 3760d2ab7..f74c507e8 100644 --- a/litex/soc/cores/xadc.py +++ b/litex/soc/cores/xadc.py @@ -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), ]