mirror of https://github.com/m-labs/artiq
78 lines
1.8 KiB
Python
78 lines
1.8 KiB
Python
from numpy import int32
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from artiq.experiment import *
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from artiq.coredevice.i2c import i2c_write_many, i2c_read_many, i2c_poll
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port_mapping = {
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"EEM0": 7,
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"EEM1": 5,
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"EEM2": 4,
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"EEM3": 3,
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"EEM4": 2,
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"EEM5": 1,
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"EEM6": 0,
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"EEM7": 6,
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"EEM8": 12,
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"EEM9": 13,
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"EEM10": 15,
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"EEM11": 14,
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"SFP0": 8,
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"SFP1": 9,
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"SFP2": 10,
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"LOC0": 11,
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}
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class KasliEEPROM:
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def __init__(self, dmgr, port, address=0xa0, busno=0,
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core_device="core", sw0_device="i2c_switch0", sw1_device="i2c_switch1"):
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self.core = dmgr.get(core_device)
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self.sw0 = dmgr.get(sw0_device)
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self.sw1 = dmgr.get(sw1_device)
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self.busno = busno
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self.port = port_mapping[port]
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self.address = address # i2c 8 bit
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@kernel
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def select(self):
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mask = 1 << self.port
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if self.port < 8:
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self.sw0.set(self.port)
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self.sw1.unset()
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else:
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self.sw0.unset()
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self.sw1.set(self.port - 8)
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@kernel
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def deselect(self):
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self.sw0.unset()
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self.sw1.unset()
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@kernel
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def write_i32(self, addr, value):
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self.select()
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try:
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data = [0]*4
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for i in range(4):
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data[i] = (value >> 24) & 0xff
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value <<= 8
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i2c_write_many(self.busno, self.address, addr, data)
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i2c_poll(self.busno, self.address)
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finally:
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self.deselect()
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@kernel
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def read_i32(self, addr):
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self.select()
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try:
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data = [0]*4
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i2c_read_many(self.busno, self.address, addr, data)
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value = int32(0)
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for i in range(4):
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value <<= 8
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value |= data[i]
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finally:
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self.deselect()
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return value
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