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tb: pcs: Initialize inputs before clocks 

Ensure all inputs are initialized before starting the clocks. This
avoids any problems which might occur due to everything being
initialized at once.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
This commit is contained in:
Sean Anderson 2022-08-06 15:27:31 -04:00
parent 2b752c4bc1
commit ac69f9208e
1 changed files with 3 additions and 2 deletions
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5
tb/pcs.py
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@ -224,7 +224,6 @@ async def pcs_send_codes(pcs, codes):
@cocotb.test(timeout_time=10, timeout_unit='us') @cocotb.test(timeout_time=10, timeout_unit='us')
async def test_tx(pcs): async def test_tx(pcs):
await cocotb.start(Clock(pcs.tx_clk, 8, units='ns').start())
async def tx_ce(): async def tx_ce():
pcs.tx_ce.value = 1 pcs.tx_ce.value = 1
while True: while True:
@ -232,12 +231,14 @@ async def test_tx(pcs):
pcs.tx_ce.value = 0 pcs.tx_ce.value = 0
await ClockCycles(pcs.tx_clk, 4, False) await ClockCycles(pcs.tx_clk, 4, False)
pcs.tx_ce.value = 1 pcs.tx_ce.value = 1
await cocotb.start(tx_ce())
pcs.tx_en.value = 0 pcs.tx_en.value = 0
pcs.tx_er.value = 0 pcs.tx_er.value = 0
pcs.txd.value = LogicArray("XXXX") pcs.txd.value = LogicArray("XXXX")
pcs.link_status.value = 1 pcs.link_status.value = 1
await cocotb.start(tx_ce())
await Timer(1)
await cocotb.start(Clock(pcs.tx_clk, 8, units='ns').start())
await FallingEdge(pcs.tx_ce) await FallingEdge(pcs.tx_ce)
# Test that all bytes can be transmitted # Test that all bytes can be transmitted