92 lines
3.5 KiB
Python
92 lines
3.5 KiB
Python
"""Exercise the production profile clock on and off both nRF52 and other boards."""
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from pathlib import Path
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import os
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import subprocess
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import tempfile
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import unittest
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ROOT = Path(__file__).resolve().parents[1]
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SOURCE = (ROOT / "src/helpers/radiolib/RadioLibWrappers.cpp").read_text()
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CLOCK = SOURCE[SOURCE.index("// Extend the 24-bit RTC counter"):].split(
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"\nstatic\n#if defined(ESP8266)", 1)[0]
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HARNESS = r'''
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#include <cassert>
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#include <cstdint>
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struct FakeRtc {
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uint32_t TASKS_STOP = 0, PRESCALER = 9, TASKS_CLEAR = 0, TASKS_START = 0;
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uint32_t COUNTER = 0;
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} rtc;
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#define NRF_RTC2 (&rtc)
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uint32_t micros() { return 1234; }
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@CLOCK@
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int main() {
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assert(profileTimestamp(false) == 1234);
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assert(rtc.TASKS_START == 0 && rtc.TASKS_STOP == 0);
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assert(profileElapsedUs(12, 42, false) == 30);
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#if defined(NRF52_PLATFORM)
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rtc.COUNTER = 100;
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assert(profileTimestamp(true) == 0);
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assert(rtc.TASKS_STOP == 1 && rtc.PRESCALER == 0);
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assert(rtc.TASKS_CLEAR == 0 && rtc.TASKS_START == 1);
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rtc.TASKS_CLEAR = rtc.TASKS_START = rtc.TASKS_STOP = 0;
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assert(profileTimestamp(true) == 0);
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assert(rtc.TASKS_CLEAR == 0 && rtc.TASKS_START == 0 && rtc.TASKS_STOP == 0);
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assert(profileElapsedUs(0, 32768, true) == 1000000);
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assert(profileElapsedUs(0xfffffff0, 0x10, true) == 977);
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uint32_t stamp=0;
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for(unsigned second=1;second<=532;++second) {
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rtc.COUNTER=(rtc.COUNTER+32768)&0x00ffffffUL;
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stamp=profileTimestamp(true);
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assert(stamp==second*32768UL);
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assert(profileElapsedUs(0,stamp,true)==second*1000000UL);
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}
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assert(stamp>0x00ffffffUL); // A valid visit can exceed the hardware period.
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assert(profileElapsedUs(0,UINT32_MAX,true)==UINT32_MAX);
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syncProfileClock(false);
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assert(rtc.TASKS_STOP == 1 && profileTimestamp(false) == 1234);
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rtc.TASKS_CLEAR = rtc.TASKS_START = rtc.TASKS_STOP = 0;
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syncProfileClock(false);
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assert(rtc.TASKS_CLEAR == 0 && rtc.TASKS_START == 0 && rtc.TASKS_STOP == 0);
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rtc.COUNTER = 200;
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assert(profileTimestamp(true) == 0);
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assert(rtc.TASKS_CLEAR == 0 && rtc.TASKS_START == 1);
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for(unsigned chunk=0;chunk<511;++chunk) {
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rtc.COUNTER=(rtc.COUNTER+256UL*32768)&0x00ffffffUL;
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profileTimestamp(true);
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}
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rtc.COUNTER=(rtc.COUNTER+255UL*32768)&0x00ffffffUL;
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const auto before=profileTimestamp(true);assert(before==0xffff8000UL);
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rtc.COUNTER=(rtc.COUNTER+32768)&0x00ffffffUL;
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const auto wrapped=profileTimestamp(true);assert(wrapped==0);
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assert(profileElapsedUs(before,wrapped,true)==1000000UL);
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#else
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assert(profileTimestamp(true) == 1234);
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assert(profileElapsedUs(12, 42, true) == 30);
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assert(rtc.TASKS_START == 0 && rtc.TASKS_STOP == 0);
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#endif
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}
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'''
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class ProfileClockTest(unittest.TestCase):
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def test_clock_selection_and_lifecycle(self):
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with tempfile.TemporaryDirectory() as folder:
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cpp = Path(folder) / "test.cpp"
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exe = Path(folder) / "test.exe"
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cpp.write_text(HARNESS.replace("@CLOCK@", CLOCK))
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for defines in ([], ["-DNRF52_PLATFORM=1"]):
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result = subprocess.run(
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[os.environ.get("CXX", "g++"), "-std=c++17", "-Wall", "-Wextra",
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"-Werror", *defines, str(cpp), "-o", str(exe)],
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capture_output=True, text=True,
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)
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self.assertEqual(result.returncode, 0, result.stderr)
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result = subprocess.run([str(exe)], capture_output=True, text=True)
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self.assertEqual(result.returncode, 0, result.stderr)
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if __name__ == "__main__":
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unittest.main()
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