Search found 126 matches

by marfis
Sat Mar 18, 2017 4:25 pm
Forum: Drivers for External Components
Topic: LSM9DS1 9DOF gyro
Replies: 5
Views: 511

Re: LSM9DS1 9DOF gyro

In principle any uPy board with i2c support should work. I tested the code with the pyboard. If you use the SenseHAT board there is documentation on how to wire up things here: https://github.com/hoihu/projects/tree/master/raspi-hat I couldn't test the latest version of the driver (move to the machi...
by marfis
Sun Mar 12, 2017 8:43 pm
Forum: ESP8266 boards
Topic: mpy-cross not making files smaller
Replies: 8
Views: 245

Re: mpy-cross not making files smaller

that's interesting. So mpy-cross may be good for your RAM usage but not necessarily for your Flash storage. I guess it is a different story with the frozen bytecode (since that should not have the qstrs overhead)? It adds another view when deciding betwen mpy-cross, frozen bytecode or plain text. Co...
by marfis
Wed Mar 08, 2017 5:47 am
Forum: Other Boards
Topic: Selecting an ESP32 Port
Replies: 1
Views: 100

Re: Selecting an ESP32 Port

The pycom esp32 port should be merged soon into the main uPy repository (there was an announcement by damien on this forum a couple of weeks ago).

So I guess you need to be patient...
by marfis
Wed Mar 01, 2017 6:26 am
Forum: General Discussion and Questions
Topic: Moving data to host using USB
Replies: 8
Views: 193

Re: Moving data to host using USB

Some of the confusions come from different USB HW and FW implementations. If a USB - serial converter chip is used it will limit the datarate to the value you specify over your terminal (by using CDC / VCP profile). That is the case for example on the huzzah boards or if you use your own usb-serial ...
by marfis
Sun Feb 26, 2017 8:28 pm
Forum: Hardware Projects
Topic: Graphing barometer - storm Doris
Replies: 4
Views: 196

Re: Graphing barometer - storm Doris

consider selling this as a product :)

A hackable ultralow power uPy weather station, excellent!
by marfis
Wed Feb 22, 2017 9:07 pm
Forum: General Discussion and Questions
Topic: ticks_diff not behaving
Replies: 5
Views: 191

Re: ticks_diff not behaving

can't really explain it but just to note a couple of things: ticks_diff should return invalid values if the difference is higher than 2**29-1 (as described in the docs). From what I see in the repo this value is the same for all platforms (`MICROPY_PY_UTIME_TICKS_PERIOD`) and works as expected on th...
by marfis
Wed Feb 15, 2017 7:52 pm
Forum: The MicroPython pyboard
Topic: SPI and DMA
Replies: 2
Views: 165

Re: SPI and DMA

dhylands wrote:I would also like to see an option for async I/O (I2C, SPI, UART) where some type of completion callback occurs when the I/O has "finished".

yeah, me too.
by marfis
Mon Feb 06, 2017 5:56 am
Forum: Development of MicroPython
Topic: hiding python code on the board
Replies: 21
Views: 776

Re: hiding python code on the board

yeah right. overlooked that!
by marfis
Sun Feb 05, 2017 8:46 pm
Forum: Development of MicroPython
Topic: hiding python code on the board
Replies: 21
Views: 776

Re: hiding python code on the board

To make things a bit harder why not: 1) disable REPL (do not compile it into your FW) 2) disable debugger access (blowing JTAG fuse) 3) enable HW security features, such as readout protection 4) bytecompile as much as possible If JTAG lines remain enabled it's no problems to readout and reverse engi...
by marfis
Wed Feb 01, 2017 6:22 am
Forum: ESP8266 boards
Topic: Docker image
Replies: 8
Views: 851

Re: Docker image

numerous points.. a lot of them you'll find on google. it isolates your cross dependencies. you can run an ubuntu image on osx similar like a VM but without the additional overhead of a full fledged VM. The dockerfile is also self-describing. if you ever need to reinstall your system, just use the d...

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