diff options
Diffstat (limited to 'tinyusb/examples/device/usbtmc/visaQuery.py')
| -rwxr-xr-x | tinyusb/examples/device/usbtmc/visaQuery.py | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/tinyusb/examples/device/usbtmc/visaQuery.py b/tinyusb/examples/device/usbtmc/visaQuery.py deleted file mode 100755 index 50a765a0..00000000 --- a/tinyusb/examples/device/usbtmc/visaQuery.py +++ /dev/null @@ -1,209 +0,0 @@ -#!/usr/bin/env python3 - -import visa -import time -import sys - - -def test_idn(): - idn = inst.query("*idn?"); - assert (idn == "TinyUSB,ModelNumber,SerialNumber,FirmwareVer123456\r\n") - assert (inst.is_4882_compliant) - -def test_echo(m,n): - longstr = "0123456789abcdefghijklmnopqrstuvwxyz" * 50 - t0 = time.monotonic() - - #Next try echo from 1 to 175 characters (200 is max buffer size on DUT) - for i in range(m,n): - #print(i) - x = longstr[0:i] - xt = x + inst.write_termination - y = inst.query(x) - #print(x) - #print (":".join("{:02x}".format(ord(c)) for c in xt)) - #print (":".join("{:02x}".format(ord(c)) for c in y)) - assert(xt == y), f"failed i={i}" - #inst.read_stb();# Just to make USB logging easier by sending a control query (bad thing is that this made things slow) - t = time.monotonic() - t0 - print(f" elapsed: {t:0.3} sec") - -def test_trig(): - # clear SRQ - inst.read_stb() - assert (inst.read_stb() == 0) - inst.assert_trigger() - time.sleep(0.3) # SRQ may have some delay - assert (inst.read_stb() & 0x40), "SRQ not set after 0.3 seconds" - assert (inst.read_stb() == 0) - - -def test_mav(): - inst.write("delay 50") - inst.read_stb() # clear STB - assert (inst.read_stb() == 0) - inst.write("123") - time.sleep(0.3) - assert (inst.read_stb() & 0x10), "MAV not set after 0.5 seconds" - - rsp = inst.read() - assert(rsp == "123\r\n") - - -def test_srq(): - assert (inst.read_stb() == 0) - inst.write("123") - - #inst.enable_event(visa.constants.VI_EVENT_SERVICE_REQ, visa.constants.VI_QUEUE) - #waitrsp = inst.wait_on_event(visa.constants.VI_EVENT_SERVICE_REQ, 5000) - #inst.discard_events(visa.constants.VI_EVENT_SERVICE_REQ, visa.constants.VI_QUEUE) - #inst.wait_for_srq() - time.sleep(0.3) - stb = inst.read_stb() - msg = "SRQ not set after 0.5 seconds, was {:02x}".format(stb) - assert (stb == 0x50),msg - - assert (inst.read_stb() == 0x10), "SRQ set at second read!" - - rsp = inst.read() - assert(rsp == "123\r\n") - -def test_read_timeout(): - inst.timeout = 500 - # First read with no MAV - inst.read_stb() - assert (inst.read_stb() == 0) - inst.write("delay 500") - t0 = time.monotonic() - try: - rsp = inst.read() - assert(false), "Read should have resulted in timeout" - except visa.VisaIOError: - print(" Got expected exception") - t = time.monotonic() - t0 - assert ((t*1000.0) > (inst.timeout - 300)) - assert ((t*1000.0) < (inst.timeout + 300)) - print(f"Delay was {t:0.3}") - # Response is still in queue, so send a clear (to be more helpful to the next test) - inst.clear() - time.sleep(0.3) - assert(0 == (inst.read_stb() & 0x10)), "MAV not reset after clear" - -def test_abort_in(): - inst.timeout = 200 - # First read with no MAV - inst.read_stb() - assert (inst.read_stb() == 0) - inst.write("delay 500") - inst.write("xxx") - t0 = time.monotonic() - try: - rsp = inst.read() - assert(false), "Read should have resulted in timeout" - except visa.VisaIOError: - print(" Got expected exception") - t = time.monotonic() - t0 - assert ((t*1000.0) > (inst.timeout - 300)) - assert ((t*1000.0) < (inst.timeout + 300)) - print(f" Delay was {t:0.3}") - # Response is still in queue, so send a clear (to be more helpful to the next test) - inst.timeout = 800 - y = inst.read() - assert(y == "xxx\r\n") - -def test_indicate(): - # perform indicator pulse - usb_iface = inst.get_visa_attribute(visa.constants.VI_ATTR_USB_INTFC_NUM) - retv = inst.control_in(request_type_bitmap_field=0xA1, request_id=64, request_value=0x0000, index=usb_iface, length=0x0001) - assert((retv[1] == visa.constants.StatusCode(0)) and (retv[0] == b'\x01')), f"indicator pulse failed: retv={retv}" - - -def test_multi_read(): - old_chunk_size = inst.chunk_size - longstr = "0123456789abcdefghijklmnopqrstuvwxyz" * 10 - timeout = 10 - x = longstr[0:174] - inst.chunk_size = 50 # Seems chunk size only applies to read but not write - inst.write(x) - # I'm not sure how to request just the remaining bit using a max count... so just read it all. - y = inst.read() - assert (x + "\r\n" == y) - #inst.chunk_size = old_chunk_size - -def test_stall_ep0(): - usb_iface = inst.get_visa_attribute(visa.constants.VI_ATTR_USB_INTFC_NUM) - inst.read_stb() - # This is an invalid request, should create stall. - try: - retv = inst.control_in(request_type_bitmap_field=0xA1, request_id=60, request_value=0x0000, index=usb_iface, length=0x0001) - assert false - except visa.VisaIOError: - pass - - assert (inst.read_stb() == 0) - - -rm = visa.ResourceManager() -reslist = rm.list_resources("USB?::?*::INSTR") -print(reslist) - -if (len(reslist) == 0): - sys.exit() - -inst = rm.open_resource(reslist[0]); -inst.timeout = 3000 - -inst.clear() - -print("+ IDN") -test_idn() - -print("+test abort in") -test_abort_in() - - -inst.timeout = 2000 - -print("+ multi read") -test_multi_read() - - -print("+ echo delay=0") -inst.write("delay 0") -test_echo(1,175) - -print("+ echo delay=2") -inst.write("delay 2") -test_echo(1,175) - -print("+ echo delay=150") -inst.write("delay 150") -test_echo(53,76) -test_echo(165,170) - -print("+ Read timeout (no MAV)") -test_read_timeout() - -print("+ Test EP0 stall recovery") -test_stall_ep0() - -print("+ MAV") -test_mav() - -print("+ SRQ") -test_srq() - -print("+ indicate") -test_indicate() - -print("+ TRIG") -test_trig() - -# Untested: -# abort bulk out -# LLO, GTL, etc -# Throughput rate? -# Transmitting a message using multiple transfers - -inst.close() -print("Test complete") |