# SPDX-FileCopyrightText: 2023 Efabless Corporation

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#      <http://www.apache.org/licenses/LICENSE-2.0|http://www.apache.org/licenses/LICENSE-2.0>

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# SPDX-License-Identifier: Apache-2.0

from caravel_cocotb.caravel_interfaces import test_configure
from caravel_cocotb.caravel_interfaces import report_test
import cocotb
from cocotb.clock import Clock
#from cocotb.trigger import RisingEdge, ClockCycles

@cocotb.test()
@report_test
async def counter_wb(dut):
   caravelEnv = await test_configure(dut,timeout_cycles=100000)
   
   # To test & see if we can flip the gpios at all. 
   caravelEnv.drive_gpio_in((31,0),0xFFFFFFFF)
   caravelEnv.drive_gpio_in((31,0),0x00000000)
    
    # Generate a 2 GHz clock signal on a digital input pin (using gpio_0)
    cocotb.log.info(f"[TEST] Starting 2 GHz clock on gpio_14")
    clock = Clock(dut.gpio14, 0.5, units="ns")  # 0.5 ns period = 2 GHz
    await cocotb.start(clock.start())
    

    
    cocotb.log.info(f"[TEST] Start counter_wb test")  
    # wait for start of sending
    await caravelEnv.release_csb()
    await caravelEnv.wait_mgmt_gpio(1)
    cocotb.log.info(f"[TEST] finish configuration") 
    # Now wait util the mgmt gpio pin goes low again, so we know we reach the end of our firmware...
    await caravelEnv.wait_mgmt_gpio(0)

clock = Clock(dut.gpio14, 0.5, units="ns")  # 0.5 ns period = 2 GHz