Documentation ifu

.vscode/launch.json

@@ -8,8 +8,8 @@
       "name": "Python Debugger: Current File",
       "type": "debugpy",
       "request": "launch",
-      // "program": "src/__main__.py",
-      "module": "examples.dyscom.example_dyscom_send_file",
+      "program": "src/__main__.py",
+      // "module": "examples.dyscom.example_dyscom_send_file",
       "justMyCode": false,
       // "args": ["COM3"],
       "console": "integratedTerminal"

HINTS.md

@@ -102,16 +102,10 @@ This page describes implementation details.
 - https://www.reddit.com/r/macOSVMs/comments/1gb8egp/macos_sonoma_virtualbox_bootloop_afterduring/?rdt=48615
 
 
-# Deviation from Instruction for Use
-
-## Dyscom commands
-
-### Common
-- Datetime parameters have a different order
+## I24 protocol hints
 
 ### DL_init
 - Init state seems always be UNUSED
-- Strings are 1 byte longer than in other commands
 - Output data rate depends on init params filter property
 - Setting a filter overwrite other settings
   - ADS129x register channel 1-4 settings
@@ -121,26 +115,10 @@ This page describes implementation details.
 ### DL_get for type file system status and list of measurement info
 - Return never meaningful values, probably not implemented on I24 side
 
-### DL_get_ack for type file by name
-- Additional parameter mode (1 byte)
-  - Undefined = 0
-  - Multiblock = 1
-  - Singleblock = 2
-
 ### DL_get for type battery
 - Dl get types (table 23)
   - 0 -> Battery (was Unused)
 
-### DL_get_ack for type battery
-- Energy state, 1 byte, is a flag, bit 1: cable connected, bit 2: device is loading
-- Percentage, 1 byte, [0, 100] in percent
-- Temperature, 1 byte, [-128, 127] in degrees
-- Current, 4 bytes, [-327675, 327675] in milliampere
-- Voltage, 4 bytes, [0, 65535] in millivolt
-
-### DL_send_file_ack
-- Block number, 4 byte, block number of DL_send_file
-
 ### DL_send_live_data
 - SignalType for each sample is always 0
 - Contains always 5 samples, regardless of selected signal types in DL_init

README.md

@@ -2,7 +2,7 @@
 
 ## Introduction
 
-Python implementation of HasomedScience ScienceMode 4 protocol for P24 (https://github.com/ScienceMode/ScienceMode4_P24) and I24 (https://github.com/ScienceMode/ScienceMode4_I24) devices. To use this library see section [Installation](#installation).
+Pure Python implementation of HasomedScience ScienceMode 4 protocol for P24 (https://github.com/ScienceMode/ScienceMode4_P24) and I24 (https://github.com/ScienceMode/ScienceMode4_I24) devices. To use this library see section [Installation](#installation). Library and examples are tested under Windows, Linux and MacOS.
 
 ## Requirements
 
@@ -125,4 +125,7 @@ Python 3.11 or higher
 - Fixed error with PacketLowLevelChannelConfigAck result
 
 ## 0.0.17
-- Added sample that demonstrates how to read measurement data files from I24 devices
+- Added sample that demonstrates how to read measurement data files from I24 devices
+
+## 0.0.18
+- More documentation

examples/dyscom/example_dyscom_get.py

@@ -46,10 +46,20 @@ async def main() -> int:
     file_system_status = await dyscom.get_file_system_status()
     print(file_system_status)
 
-    ####
+    # this is the default calibration filename
     calibration_filename = f"rehaingest_{device_id}.cal"
+    ####
+    # get calibration file content
     calibration_content = await dyscom.get_file_content(calibration_filename)
     print(f"Calibration content length: {len(calibration_content)}")
+    # I24 devices calculates checksum from first 2 bytes of the file content
+    calculated_checksum = (calibration_content[0] << 8) | calibration_content[1]
+    print(f"Calculated calibration content checksum: {calculated_checksum}")
+
+    ####
+    # get file info for calibration file
+    file_info = await dyscom.get_file_info(calibration_filename)
+    print(f"Calibration file info checksum: {file_info.checksum}")
 
     # close serial port connection
     connection.close()

src/__main__.py

@@ -6,7 +6,7 @@
 
 from science_mode_4.device_i24 import DeviceI24
 from science_mode_4.dyscom.dyscom_types import DyscomFilterType, DyscomInitFlag, DyscomInitParams, DyscomPowerModulePowerType,\
-    DyscomPowerModuleType, DyscomSignalType
+    DyscomPowerModuleType, DyscomSignalType, DyscomSysType
 from science_mode_4.utils.serial_port_connection import SerialPortConnection
 
 
@@ -24,8 +24,24 @@ async def main() -> int:
     # to have a defined state
     await device.initialize()
 
+
     # get dyscom layer to call low level commands
     dyscom = device.get_layer_dyscom()
+    device_id = await dyscom.get_device_id()
+
+    ####
+    calibration_filename = f"rehaingest_{device_id}.cal"
+    calibration_content = await dyscom.get_file_content(calibration_filename)
+    print(f"Calibration content length: {len(calibration_content)}")
+    calculated_checksum = (calibration_content[0] << 8) | calibration_content[1]
+    print(f"Calculated calibration content checksum: {calculated_checksum}")
+
+    ####
+    file_info = await dyscom.get_file_info(calibration_filename)
+    print(f"Calibration file info checksum: {file_info.checksum}")
+
+    s_y_s = await dyscom.sys(DyscomSysType.DEVICE_STORAGE)
+    print(f"Sys {s_y_s.state.name}")
 
     # call enable measurement power module and memory card for measurement
     await dyscom.power_module(DyscomPowerModuleType.MEASUREMENT, DyscomPowerModulePowerType.SWITCH_ON)

src/science_mode_4/device.py

@@ -84,7 +84,8 @@ async def initialize(self):
         if DeviceCapability.DYSCOM in self._capabilities:
             # get operation mode to see if dyscom measurement is running
             operation_mode = await self.get_layer_dyscom().get_operation_mode()
-            if operation_mode in [DyscomGetOperationModeType.LIVE_MEASURING_PRE,
+            if operation_mode in [DyscomGetOperationModeType.UNDEFINED,
+                                  DyscomGetOperationModeType.LIVE_MEASURING_PRE,
                                   DyscomGetOperationModeType.LIVE_MEASURING,
                                   DyscomGetOperationModeType.RECORD_PRE,
                                   DyscomGetOperationModeType.RECORD,

src/science_mode_4/dyscom/ads129x/ads129x.py

@@ -31,7 +31,7 @@ class Ads129x:
     channel_4_setting_register = Ads129xChannelSettingsRegister() # CH4SET
 
     positive_signal_derivation_register = 0x02 # RLD_SENSP
-    negative_signal_derivation_register = 0xEA # RLD_SENSN
+    negative_signal_derivation_register = 0x02 # RLD_SENSN
     positive_signal_lead_off_detection_register = 0 # LOFF_SENSP
     negative_signal_lead_off_detection_register = 0 # LOFF_SENSN
 

src/science_mode_4/dyscom/dyscom_get_file_info.py

@@ -30,8 +30,10 @@ def get_data(self) -> bytes:
         bb = ByteBuilder()
         bb.append_bytes(super().get_data())
         bb.append_bytes(DyscomHelper.str_to_bytes(self._filename, 128))
-        # maybe more parameters are necessary here
-        # file_size, file_checksum
+        # file size
+        bb.append_value(0, 4, True)
+        # checksum
+        bb.append_value(0, 2, True)
         return bb.get_bytes()
 
 

src/science_mode_4/dyscom/dyscom_layer.py

@@ -6,8 +6,8 @@
 from science_mode_4.layer import Layer
 from science_mode_4.protocol.commands import Commands
 from science_mode_4.utils.logger import logger
-from .dyscom_types import DyscomFrequencyOut, DyscomGetOperationModeType, DyscomPowerModuleType,\
-    DyscomPowerModulePowerType, DyscomSignalType, DyscomSysType
+from .dyscom_types import DyscomFrequencyOut, DyscomGetOperationModeType, DyscomInitState, DyscomPowerModuleType,\
+    DyscomPowerModulePowerType, DyscomSignalType, DyscomSysState, DyscomSysType
 from .dyscom_init import DyscomInitResult, PacketDyscomInit, PacketDyscomInitAck, DyscomInitParams
 from .dyscom_get_file_system_status import PacketDyscomGetFileSystemStatus, PacketDyscomGetAckFileSystemStatus,\
     DyscomGetFileSystemStatusResult
@@ -36,6 +36,9 @@ async def init(self, params: DyscomInitParams) -> DyscomInitResult:
         p = PacketDyscomInit(params)
         ack: PacketDyscomInitAck = await self.send_packet_and_wait(p)
         self._check_result_error(ack.result_error, "DyscomInit")
+        if ack.init_state not in [DyscomInitState.UNUSED, DyscomInitState.SUCCESS]:
+            raise ValueError(f"Dyscom error init {ack.init_state.name}")
+
         logger().info("Dyscom init, measurement_file_id: %s, state: %s, frequency: %s",\
                       ack.measurement_file_id, ack.init_state.name, ack.frequency_out.name)
         return DyscomInitResult(ack.register_map_ads129x, ack.measurement_file_id, ack.init_state, ack.frequency_out)
@@ -139,6 +142,9 @@ async def sys(self, sys_type: DyscomSysType, filename: str = "") -> DyscomSysRes
         p = PacketDyscomSys(sys_type, filename)
         ack: PacketDyscomSysAck = await self.send_packet_and_wait(p)
         self._check_result_error(ack.result_error, "DyscomSys")
+        if ack.state not in [DyscomSysState.SUCCESSFUL]:
+            raise ValueError(f"Dyscom error sys {ack.state.name}")
+
         logger().info("Dyscom sys, type: %s, state: %s, filename: %s", ack.sys_type.name, ack.state.name, ack.filename)
         return DyscomSysResult(ack.sys_type, ack.state, ack.filename)