Initial commit

verilog/dv/cocotb/user_proj_tests/counter_wb/counter_wb.c

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+// 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
+
+// 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.
+
+
+#include <firmware_apis.h>
+
+void main(){
+    // Enable managment gpio as output to use as indicator for finishing configuration  
+    ManagmentGpio_outputEnable();
+    ManagmentGpio_write(0);
+    enableHkSpi(0); // disable housekeeping spi
+    // configure all gpios as  user out then chenge gpios from 32 to 37 before loading this configurations
+    GPIOs_configureAll(GPIO_MODE_USER_STD_OUT_MONITORED);
+    
+    GPIOs_loadConfigs(); // load the configuration 
+    User_enableIF(); // this necessary when reading or writing between wishbone and user project if interface isn't enabled no ack would be recieve and the command will be stuck
+    // user la reset and wb clk
+    LogicAnalyzer_outputEnable(2,1);
+    // reset counter 
+    LogicAnalyzer_write(2,2);
+    LogicAnalyzer_write(2,0);
+    ManagmentGpio_write(1); // configuration finished 
+    // writing to any address inside user project address space would reload the counter value
+    USER_writeWord(0x7,0x88);
+    ManagmentGpio_write(0); // start counting from 0
+
+    return;
+}

verilog/dv/cocotb/user_proj_tests/counter_wb/counter_wb.py

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+# 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
+
+# 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
+
+@cocotb.test()
+@report_test
+async def counter_wb(dut):
+    caravelEnv = await test_configure(dut,timeout_cycles=32620)
+
+    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") 
+    overwrite_val = 7 # value will be written to the counter by wishbone 
+    # expect value bigger than 7 
+    received_val = int ((caravelEnv.monitor_gpio(37,30).binstr + caravelEnv.monitor_gpio(7,0).binstr ),2)  
+    counter = received_val
+    await cocotb.triggers.ClockCycles(caravelEnv.clk,1)
+
+    while True: # wait until the value 1 start counting after the initial
+        received_val = int ((caravelEnv.monitor_gpio(37,30).binstr + caravelEnv.monitor_gpio(7,0).binstr ),2)  
+        if counter == 0xFFFF: # rollover 
+            counter = 0
+        else: 
+            counter +=1
+        if received_val != counter: 
+            if received_val == overwrite_val: 
+                counter = received_val +1
+                cocotb.log.info(f"Counter value has been overwritten by wishbone to be {received_val}")
+                while True: #wait until the wishbone writing finished and the counter start running again
+                    received_val = int ((caravelEnv.monitor_gpio(37,30).binstr + caravelEnv.monitor_gpio(7,0).binstr ),2)  
+                    if counter == received_val: 
+                        break
+                    await cocotb.triggers.ClockCycles(caravelEnv.clk,1)
+                cocotb.log.info(f"Counter value has been overwritten by wishbone to be {received_val}")
+                break
+            else: 
+                cocotb.log.error(f"Counter has wrong value before overwrite happened expected: {counter} received: {received_val}")
+        await cocotb.triggers.ClockCycles(caravelEnv.clk,1)
+
+    for i in range(100):
+        if counter != int ((caravelEnv.monitor_gpio(37,30).binstr + caravelEnv.monitor_gpio(7,0).binstr ),2) :
+            cocotb.log.error(f"Counter have wrong value expected = {counter} recieved = {int ((caravelEnv.monitor_gpio(37,30).binstr + caravelEnv.monitor_gpio(7,0).binstr ),2) }")
+        await cocotb.triggers.ClockCycles(caravelEnv.clk,1)
+        counter +=1

verilog/dv/cocotb/user_proj_tests/counter_wb/counter_wb.yaml

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+# 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
+
+# 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
+
+# Yalm file contain general design information that would mostly need to be updated in the first run only 
+Tests: 
+    - {name: counter_wb, sim: RTL}
+
+