diff options
| -rw-r--r-- | mpm/python/usrp_mpm/chips/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | mpm/python/usrp_mpm/chips/__init__.py | 1 | ||||
| -rw-r--r-- | mpm/python/usrp_mpm/chips/lmk03328.py | 84 |
3 files changed, 86 insertions, 0 deletions
diff --git a/mpm/python/usrp_mpm/chips/CMakeLists.txt b/mpm/python/usrp_mpm/chips/CMakeLists.txt index 9bd7b9372..1f64d8e2d 100644 --- a/mpm/python/usrp_mpm/chips/CMakeLists.txt +++ b/mpm/python/usrp_mpm/chips/CMakeLists.txt @@ -9,6 +9,7 @@ set(USRP_MPM_CHIP_FILES ${CMAKE_CURRENT_SOURCE_DIR}/__init__.py ${CMAKE_CURRENT_SOURCE_DIR}/lmk04828.py ${CMAKE_CURRENT_SOURCE_DIR}/lmk04832.py + ${CMAKE_CURRENT_SOURCE_DIR}/lmk03328.py ${CMAKE_CURRENT_SOURCE_DIR}/adf400x.py ${CMAKE_CURRENT_SOURCE_DIR}/ds125df410.py ) diff --git a/mpm/python/usrp_mpm/chips/__init__.py b/mpm/python/usrp_mpm/chips/__init__.py index 60368ad6a..453ab5c2a 100644 --- a/mpm/python/usrp_mpm/chips/__init__.py +++ b/mpm/python/usrp_mpm/chips/__init__.py @@ -10,3 +10,4 @@ Chips submodule from .adf400x import ADF400x from .lmk04828 import LMK04828 from .lmk04832 import LMK04832 +from .lmk03328 import LMK03328 diff --git a/mpm/python/usrp_mpm/chips/lmk03328.py b/mpm/python/usrp_mpm/chips/lmk03328.py new file mode 100644 index 000000000..461cf7f38 --- /dev/null +++ b/mpm/python/usrp_mpm/chips/lmk03328.py @@ -0,0 +1,84 @@ +# +# Copyright 2020 Ettus Research, a National Instruments Brand +# +# SPDX-License-Identifier: GPL-3.0-or-later +# +""" +LMK03328 parent driver class +""" + +from usrp_mpm.mpmlog import get_logger + +class LMK03328(): + """ + Generic driver class for LMK03328 access. + """ + LMK_CHIP_ID = 0x32 + + def __init__(self, regs_iface, parent_log=None): + self.log = \ + parent_log.getChild("LMK03328") if parent_log is not None \ + else get_logger("LMK03328") + self.regs_iface = regs_iface + assert hasattr(self.regs_iface, 'peek8') + assert hasattr(self.regs_iface, 'poke8') + self.poke8 = regs_iface.poke8 + self.peek8 = regs_iface.peek8 + + def pokes8(self, addr_vals): + """ + Apply a series of pokes. + pokes8([(0,1),(0,2)]) is the same as calling poke8(0,1), poke8(0,2). + """ + for addr, val in addr_vals: + self.poke8(addr, val) + + def get_chip_id(self): + """ + Read back the chip ID + """ + chip_id = self.peek8(0x02) + self.log.trace("Chip ID Readback: {}".format(chip_id)) + return chip_id + + def verify_chip_id(self): + """ + Returns True if the chip ID matches what we expect, False otherwise. + """ + chip_id = self.get_chip_id() + if chip_id != self.LMK_CHIP_ID: + self.log.error("Wrong Chip ID 0x{:X}".format(chip_id)) + return False + return True + + def check_pll_locked(self, pll_num): + """ + Returns True if the specified PLL is locked, False otherwise. + """ + if pll_num not in (1, 2): + self.log.warning("PLL{} is not a valid PLL" + .format(pll_num)) + return False + pll_lock_status = self.peek8(13) + + # Lock status for PLL1 is bits [7:6] and PLL2 is bits [4:3] + pll_lock_mask = 0xC0 if pll_num == 1 else 0x18 + + if (pll_lock_status & pll_lock_mask) != 0x0: + self.log.debug("PLL{} reporting unlocked... Status: 0x{:x}" + .format(pll_num, pll_lock_status)) + return False + return True + + def soft_reset(self, value=True): + """ + Performs a soft reset of the LMK03328 by setting or unsetting the software + reset register. The adjacent contents of the register are preserved by + reading their value prior to re-writing the corresponding byte. + """ + reset_bit = 0x80 + reset_addr = 12 + old_reg_val = self.peek8(reset_addr) + # The reset register is active low so if value is True, write 0. Otherwise, write 1 + new_reg_val = (old_reg_val & (~reset_bit)) if value else (old_reg_val | reset_bit) + self.poke8(reset_addr, new_reg_val) |