M-Labs
/
artiq
mirror of https://github.com/m-labs/artiq
2
0
Fork 1
Code Issues Projects Releases Wiki Activity

serwb/phy: improve/cleanup init

pull/1017/head
Florent Kermarrec 2018-05-12 01:35:34 +02:00
parent b6ab59fb80
commit 0a6d4ccd85
1 changed files with 22 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
artiq/gateware/serwb/phy.py
View File

@ -104,6 +104,9 @@ class _SerdesMasterInit(Module):
NextState("ERROR")
).Else(
NextValue(delay_min_found, 0),
NextValue(delay_min, 0),
NextValue(delay_max_found, 0),
NextValue(delay_max, 0),
NextValue(bitslip, bitslip + 1)
),
NextValue(delay, 0),
@ -118,10 +121,12 @@ class _SerdesMasterInit(Module):
If((delay_min == 0) |
(delay_max == (taps - 1)) |
((delay_max - delay_min) < taps//16),
NextValue(delay_min_found, 0),
NextValue(delay_max_found, 0),
NextState("WAIT_STABLE")
# switch to next bitslip
NextValue(delay, taps - 1),
NextState("INC_DELAY_BITSLIP")
).Else(
NextValue(delay, 0),
serdes.rx_delay_rst.eq(1),
NextState("CONFIGURE_SAMPLING_WINDOW")
),
serdes.tx_comma.eq(1)
@ -131,16 +136,7 @@ class _SerdesMasterInit(Module):
NextState("READY")
).Else(
NextValue(delay, delay + 1),
serdes.rx_delay_inc.eq(1),
NextState("WAIT_SAMPLING_WINDOW")
),
serdes.tx_comma.eq(1)
)
fsm.act("WAIT_SAMPLING_WINDOW",
timer.wait.eq(1),
If(timer.done,
timer.wait.eq(0),
NextState("CONFIGURE_SAMPLING_WINDOW")
serdes.rx_delay_inc.eq(1)
),
serdes.tx_comma.eq(1)
)
@ -225,6 +221,9 @@ class _SerdesSlaveInit(Module, AutoCSR):
NextState("ERROR")
).Else(
NextValue(delay_min_found, 0),
NextValue(delay_min, 0),
NextValue(delay_max_found, 0),
NextValue(delay_max, 0),
NextValue(bitslip, bitslip + 1)
),
NextValue(delay, 0),
@ -239,10 +238,12 @@ class _SerdesSlaveInit(Module, AutoCSR):
If((delay_min == 0) |
(delay_max == (taps - 1)) |
((delay_max - delay_min) < taps//16),
NextValue(delay_min_found, 0),
NextValue(delay_max_found, 0),
NextState("WAIT_STABLE")
# switch to next bitslip
NextValue(delay, taps - 1),
NextState("INC_DELAY_BITSLIP")
).Else(
NextValue(delay, 0),
serdes.rx_delay_rst.eq(1),
NextState("CONFIGURE_SAMPLING_WINDOW")
),
serdes.tx_idle.eq(1)
@ -253,20 +254,13 @@ class _SerdesSlaveInit(Module, AutoCSR):
).Else(
NextValue(delay, delay + 1),
serdes.rx_delay_inc.eq(1),
NextState("WAIT_SAMPLING_WINDOW")
)
)
fsm.act("WAIT_SAMPLING_WINDOW",
timer.wait.eq(1),
If(timer.done,
timer.wait.eq(0),
NextState("CONFIGURE_SAMPLING_WINDOW")
)
),
serdes.tx_idle.eq(1)
)
fsm.act("SEND_PATTERN",
timer.wait.eq(1),
If(timer.done,
If(~serdes.rx_comma,
If(~serdes.rx_comma,
timer.wait.eq(1),
If(timer.done,
NextState("READY")
)
),