EmStat Pico Firmware

Fixed firmware 1.6 low speed TIA calibration did not work on HW revision 1.2 EmStat Pico

Added MethodSCRIPT 1.8 commands

Added load and execute MethodScript from file

Fixed meas_loop_eis resetting auto-ranging

Fixed hibernate command hanging if no I2C pullups were populated (OEM only)

Updated to MethodSCRIPT 1.7

Added UART software flow control (XON/XOFF). It is now recommended to use SW flow control for all EmStat Pico’s.

Improved hibernate MethodSCRIPT command to allow applying a potential during hibernation

Added ability to measure poly WE channel RE versus GND

Improved timing accuracy

Updated communication details (UART baudrate and flow control)

Added R reverse command for CV

Added registers:

Removed deprecated s command, use MethodSCRIPT hibernate instead

Increased max line length to 256

MethodSCRIPT changes and additions:

Updated line numbers to also include comments

Updated behavior of pck_start/pck_add/pck_end commands

Added masked versions of GPIO commands (set_gpio_msk and get_gpio_msk)

Mux commands: mux_config, mux_get_channel_count, mux_set_channel

Modulo operation: mod_var

Alter the VarType of a MethodSCRIPT variable: alter_vartype

Output user notifications using the device LED: notify_led

Set scan direction for Cyclic Voltammetry (CV): set_scan_dir

Added rtc_get command, enabling RTC date and time to be retrieved within MethodSCRIPT

Easier way of using bipot

Added command, set_bipot_mode (replaces set_poly_we_mode, which had to be used from the bipot channel)

Added command set_bipot_potential (replaces set_e, which had to be used from the bipot channel)

Added optional argument add_meas

Added new bb (bipot current) VarType

Deprecated command set_poly_we_mode and PGStat mode 5 (poly_we) in favor of the new set_bipot_mode command

Deprecated optional argument poly_we in favor of add_meas

The EmStat Pico now uses the external Ablic S-35390A RTC for its system date and time if enabled in the peripheral configuration register.

Added pow_var MethodSCRIPT command

Added smooth MethodSCRIPT command

Added peak_detect MethodSCRIPT command

set_range no longer selects current range which causes overload warnings

meas_loop_eis imaginary impedance no longer returns unclear range

Added support for interpolated strings (f-strings)

Added support for array access syntax

Added support for auto-incrementing number in file

Added support for multicharacter variable names

Command set_autoranging now responds with an error when given negative inputs

wait MethodSCRIPT command is now abortable

Increased underload percentage from 2% to 4% for ranges where this is possible

Various bugfixes

Bugfix: Stop techniques trying to catch up after hold command

Bugfix: Fix timing warning flag not set in SWV.

Bugfix: EIS measurement errors on Ch1 and DC

Updated MScript version to prevent conflicts with 1.3.01 with scripts stored in flash

Bugfix: i2c_write and i2c_read incorrect reference to var a

Bugfix: file_open mode 1 (append) failed on creating file

Added support for Sensit BT onboard measurement storage

Changed filesystem for EmStat Pico’s using SD cards for storage to custom filesystem from FAT32

Improved support for various different SD cards

PAD and LSV had 12.5% acquisition fraction, adjusted to 25% to be consistent with other PalmSens devices and techniques

Reduced overhead of all techniques by 1/8th of the technique interval

Made acquisition fraction configurable through MethodSCRIPT

Improved current ranging during EIS when a DC potential is applied

Added VT_TEMPERATURE to MethodSCRIPT, allowing to sample the internal uC temperature sensor

Replaced set_cr with set_range MethodSCRIPT command which accepts any Variable Type (set_cr deprecated but still available)

Replaced set_pot_range with set_range_minmax MethodSCRIPT command which accepts any Variable Type (set_pot_range deprecated but still available)

Added Variable Type to MethodSCRIPT set_autoranging command (old version deprecated but still available)

Updated version command with 2 extra digits representing "patch"

Added fail safe communication mode with CRC

Added command to limit UART output datarate to help prevent buffer overflows on host

Reduced short circuit current of low power mode to max 20 mA

Added fs_put command to store files (text only)

fs_* commands that return data now respond with an ack '\n' before returning data.

CV did not save all output to file when file storage was enabled

Fixed CV skipped last point of last scan

Added (un)lockable protection for Non-Volatile-Memory

Fixed timing of first point in time based measurements

Added sleep when device is idle to save power

Added CRC to verify MethodSCRIPT stored in Non-Volatile-Memory

Improved technique validation for NPV/DPV

Added bitwise operator functions to MethodSCRIPT

Added cast to/from float/int functions to MethodSCRIPT

Fixed unintended delay between I2C transfers

Added 5 second timeout to commands

Fixed reported potential of SWV did not conform with theory

Made EIS respond more quickly to an abort command

Replaced "cali" command with register

Added get_time MethodSCRIPT command

Added hibernate MethodSCRIPT command

Added ability to use binary or hexadecimal numbers in MethodSCRIPT

Added integer numbers (useful for gpio functions and loops)

Added command to enter bootloader from the normal protocol

Added get_gpio, set_gpio_pullup and set_gpio_cfg commands

Added SD card support (Added way to store MethodSCRIPT output and added file browser commands)

Added abort MethodSCRIPT command

Added if, else, elseif and endif MethodSCRIPT commands

Added breakloop MethodSCRIPT command

Added new MethodSCRIPT variable types for use in "meas" MethodSCRIPT command

Added MethodSCRIPT support for bitwise operators in boolean comparisons

Added timer_start and timer_get MethodSCRIPT commands

Added set_int, await_int MethodSCRIPT commands

Added MethodSCRIPT user I2C support

Added MethodSCRIPT support for specifying what metadata to send in measurement packages

Added MethodSCRIPT array support

meas_loop_eis MethodSCRIPT command now uses set_cr when autoranging is turned off (still ignored when autoranging is enabled)

Added nscans MethodSCRIPT optional command to CV for multiple scans without overlapping points

Added support for Sensit BT

Optimised calibration routines for high speed DAC and external resistors

Added combined pgstat mode to allow up to 2.6V dynamic range

Added ability to apply standby potential on inactive channel

Added BiPot functionality (low speed only)

Added PAD technique

Added EIS autoranging support

Fixed channel settings not restored after EIS measurement

'e' and 'r' commands are now acked with a '\n' before the MethodSCRIPT runs.

Added ability to have extra whitespace in script

Added ability to save measurements to file (still missing ability to retrieve data)

Added ability to store script in flash memory

Added execution of stored script from flash, with a command or at startup

Support for HW revision 1.1, there is no functional difference between HW revisions

Bug fixed: 2 x timer wait for most techniques: CV,DPV,LSV,NPV,OCP,SWV
Techniques NOT involved: CA,EIS,PAD