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adress some review comments

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This commit is contained in:
SingularitySurfer 2022-06-17 13:03:21 +00:00
parent dc49372d57
commit d09153411f
1 changed files with 13 additions and 14 deletions
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27
artiq/coredevice/phaser.py
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@ -395,10 +395,10 @@ class Phaser:
@kernel
def write16(self, addr, data: TInt32):
"""Write 16 bit to a sequence of FPGA registers."""
for offset in range(2):
byte = data >> 8
self.write8(addr + offset, byte)
data <<= 8
byte = data >> 8
self.write8(addr, byte)
byte = data & 0xFF
self.write8(addr + 1, byte)
@kernel
def write32(self, addr, data: TInt32):
@ -1065,35 +1065,34 @@ class PhaserChannel:
:param hold: 1 to hold the servo IIR filter output constant, 0 for normal operation
:param profile: profile index to select for channel (0 to 3)
"""
if (profile < 0) | (profile > 3):
if (profile < 0) or (profile > 3):
raise ValueError("invalid profile index")
addr = PHASER_ADDR_SERVO_CFG0 + self.index
if bypass == 0:
data = 1
if hold == 1:
data = data | (1 << 1)
data = data or (1 << 1)
if bypass:
hold = 1
data = (profile << 2) | (hold << 1) | (bypass << 0)
data = (profile << 2) or (hold << 1) or (bypass << 0)
self.phaser.write8(addr, data)
@kernel
def set_iir_mu(self, profile, ab, offset):
def set_iir_mu(self, profile, b0, b1, a1, offset):
"""Load a servo profile consiting of the three filter coefficients and an output offset.
:param profile: profile to load (0 to 3)
:param ab: 3 entry coefficient vector (16 bit)
:param offset: output offset (16 bit)
"""
if (profile < 0) | (profile > 3):
if (profile < 0) or (profile > 3):
raise ValueError("invalid profile index")
if len(ab) != 3:
raise ValueError("invalid number of coefficients")
# Should I check here if the profile I want to load is selected? Aka read the register. What do I do if it is?
# 24 byte-sized ab registers per channel and 6 (2 bytes * 3 coefficients) registers per profile
addr = PHASER_ADDR_SERVO_AB_BASE + (6 * profile) + (self.index * 24)
for coef in ab:
for coef in [b0, b1, a1]:
self.phaser.write16(addr, coef)
addr +=2
addr += 2
# 8 offset registers per channel and 2 registers per offset
addr = PHASER_ADDR_SERVO_OFFSET_BASE + (2 * profile) + (self.index * 8)
self.phaser.write16(addr, offset)