New firmware release 1.6.9.b1 (frozen code support and framebuf)

daniel

Hello,

We have just released a new firmware version (1.6.9.b1). Here's the change log:

Add support for frozen code. See instructions here: https://github.com/pycom/pycom-micropython-sigfox/blob/github/esp32/README.md
Add the framebuf module.
Increase the MicroPython heap size to 72KB.
Correct channel mask settings for the LoRa US 915 stack.

As usual, the update can be applied via the tool that is available here:
https://www.pycom.io/resources/

We have released new sources up to date with support for the SiPy: https://github.com/pycom/pycom-micropython-sigfox

There's no history in order to avoid making the closed source files from Sigfox public. Since Espressif merged yesterday (https://github.com/espressif/esp-idf/pull/444) the changes that we needed in order to move forward with the steps to merge our code with the official MicroPython repository, we will go full throttle on that next week.

Cheers,
Daniel

robert-hh

Brilliant. Can' t wait to upload it.

robert-hh

Hello @daniel. The links lead to a repository pycom-micropython-sigfox, which cannot be cloned. Error: HEAD refers to a non.existing external repository.
It looks like it is assuming a very specific repository structure.
Update:
found a way: I had to clone the branch "github"

robert-hh

Hello @daniel,

I would expected that it now supports externally pre-compiled code (.mpy files) from the file system to, but it does not. That would only need the statement
#define MICROPY_PERSISTENT_CODE_LOAD (1)
in mpconfigport.h.

Butch

@daniel I updated my firmware yesterday afternoon to 1.6.8b2 (I think), and that solved my LoRa problem and all was good. This morning, I updated to 1.6.9b1 and I can not longer run the code:

$ pyboard --device /dev/cu.usbserial-DO003AJF --baudrate 115200 LoRaNanoGateway.py
b'\r\n>>> \r\n>>> \r\n>>> '
could not enter raw repl

It seems like something has gone awry with talking to a "friendly" or "raw" repl.

Suggestions?

Thanks!

Butch

Following up on my on reply, here's some additional information. If I connect to the LoPy and boot, here's what I see:

ets Jun  8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:QIO, clock div:2
load:0x3fff9010,len:8
load:0x3fff9018,len:248
load:0x40078000,len:4056
load:0x4009fc00,len:920
entry 0x4009fde4
I (1558) wifi: wifi firmware version: 90b1b8b
I (1558) wifi: config NVS flash: disabled
I (1559) wifi: config nano formating: disabled
I (1574) wifi: Init dynamic tx buffer num: 32
I (1574) wifi: wifi driver task: 3ffbd6b8, prio:23, stack:3584
I (1575) wifi: Init static rx buffer num: 10
I (1577) wifi: Init dynamic rx buffer num: 0
I (1581) wifi: Init rx ampdu len mblock:7

I (1584) wifi: Init lldesc rx ampdu entry mblock:4
I (1589) wifi: wifi power manager task: 0x3ffda798 prio: 21 stack: 2560
I (1595) wifi: sleep disable
I (1559) wifi: config nano formating: disabled
I (1574) wifi: Init dynamic tx buffer num: 32
I (1574) wifi: wifi driver task: 3ffbd6b8, prio:23, stack:3584
I (1575) wifi: Init static rx buffer num: 10
I (1577) wifi: Init dynamic rx buffer num: 0
I (1581) wifi: Init rx ampdu len mblock:7
I (1584) wifi: Init lldesc rx ampdu entry mblock:4
I (1589) wifi: wifi power manager task: 0x3ffda798 prio: 21 stack: 2560
I (1595) wifi: sleep disable
I (2584) wifi: wifi timer task: 3ffdb82c, prio:22, stack:3584
I (2606) wifi: Init ampdu: 0
I (2606) wifi: mode : softAP (24:0a:c4:00:b8:d1)
I (2686) wifi: Init ampdu: 0
I (2686) wifi: mode : sta (24:0a:c4:00:b8:d0)
I (2687) wifi: sleep disable
I (5771) wifi: n:6 0, o:6 0, ap:255 255, sta:6 0, prof:6
I (6758) wifi: state: init -> auth (b0)
I (6760) wifi: state: auth -> assoc (0)
I (6765) wifi: state: assoc -> run (10)
I (6776) wifi: connected with TP-LINK_4379, channel 6
I (16766) wifi: pm start, type:0

And then it just hangs there. This is the LoPy previously configured with LoRa Nano gateway code.

The other LoPy, previously configured with LoRa Nano node code and updated to the same firmware version as the gateway, shows the following output on boot:

ets Jun  8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:QIO, clock div:2
load:0x3fff9010,len:8
load:0x3fff9018,len:248
load:0x40078000,len:4056
load:0x4009fc00,len:920
entry 0x4009fde4
I (1570) wifi: wifi firmware version: 90b1b8b
I (1570) wifi: config NVS flash: disabled
I (1570) wifi: config nano formating: disabled
I (1586) wifi: Init dynamic tx buffer num: 32
I (1586) wifi: wifi driver task: 3ffbd6b8, prio:23, stack:3584
I (1586) wifi: Init static rx buffer num: 10
I (1588) wifi: Init dynamic rx buffer num: 0
I (1592) wifi: Init rx ampdu len mblock:7
I (1596) wifi: Init lldesc rx ampdu entry mblock:4
I (1601) wifi: wifi power manager task: 0x3ffda798 prio: 21 stack: 2560
I (1607) wifi: sleep disable
I (2596) wifi: wifi timer task: 3ffdb82c, prio:22, stack:3584
I (2617) wifi: Init ampdu: 0
I (2617) wifi: mode : softAP (24:0a:c4:00:b7:47)
MicroPython v1.8.6-536-gb84c3837 on 2017-03-24; LoPy with ESP32
Type "help()" for more information.
>>> 
>>> import os; os.uname()
(sysname='LoPy', nodename='LoPy', release='1.6.9.b1', version='v1.8.6-536-gb84c3837 on 2017-03-24', machine='LoPy with ESP32', lorawan='1.0.0')

As you can see, I get a repl and can verify the version of firmware installed.

Any ideas?

Thanks!

robert-hh

Hi @daniel , it looks like you are juggling with too many versions. The one that compiles at the end from the pycom-micropython-sigfox repository is 1.6.8.b1, however with frozen code support and framebuf).

>>> uos.uname()
(sysname='LoPy', nodename='LoPy', release='1.6.8.b1', version='b8220c0-dirty on 2017-03-24', machine='LoPy with ESP32', lorawan='1.0.0')

And I could see that adding the line:
#define MICROPY_PERSISTENT_CODE_LOAD (1)
indeed enables executing .mpy files from the file system.

daniel

@robert-hh thanks, the problem when checking out was due to the default branch not being master. I have just fixed that and also pushed the commit that bumps the firmware version to 1.6.9.b1.

daniel

@Butch, this firmware release is pretty much the same as before 1.6.8.b2 only that it adds 8KB of extra heap. Can you try a safe boot, format the file system of the problematic LoPy and put the scripts back again after a normal reset?

robert-hh

@daniel Thanks, it works.

Shaun

@daniel
This revision is broken for me as well.
If I leave my application running for some time, with Telnet connected with a 36 hour time out, and come back in an hour or 2, the Telnet terminal has disconnected on the 1st occasion and on the 2nd occasion the WiPy2 had frozen solid and required a hard reset.

daniel

@Shaun OK thanks for the info, we'll investigate.

rdixey

@daniel I2C Bus finds no device address after update to 1.6.9.b1. All of my code had run fine under 1.6.7.b1 but after this update I get I2C Bus Error from my scripts.
I found that i2c.scan() finds no addresses. I notice that the I2C Init defines the SDA & SCL pins with alt=198 but in prior releases it was alt=-1. I don't know what the alt values mean or if it is the cause of my problem?

>>> os.uname()
(sysname='LoPy', nodename='LoPy', release='1.6.9.b1', version='v1.8.6-536-gb84c3837 on 2017-03-24', machine='LoPy with ESP32', lorawan='1.0.0')
>>>
>>> i2c = I2C(0, I2C.MASTER, baudrate=100000, pins=("P9", "P8"))
>>> i2c.scan()
[]
>>> i2c.scan()
[]
>>> i2c.scan()
[]
>>> Pin.exp_board.G15
Pin('P8', mode=Pin.OPEN_DRAIN, pull=Pin.PULL_UP, alt=198)
>>> Pin.exp_board.G16
Pin('P9', mode=Pin.OPEN_DRAIN, pull=Pin.PULL_UP, alt=198)
>>>

To troubleshoot this:

Rechecked all of my jumper connections. - No Resolution
Formatted the file system - No Resolution
Downgraded to firmware version 1.6.0.b1. - I2C worked flawlessly again.
Updated again to firmware version (1.6.9.b1). - No I2C devices found on I2C bus same as first time.

Now I suspect there is a change in the new firmware causing the problem.

What should I do next?

jmarcelino

@rdixey
The problem seems to be reassigning SCL to P8. Maybe something related to SD cards changed as P8 is also used there.

Other pins I tried - the default P10, P21 or P11- work so try changing it to another pin if you can.

Other than that I2C is working fine, I have it extensively driving a Si4703.

daniel

@jmarcelino and @rdixey thanks for the investigation. We'll check what's the problem with pins P8 and P9 here.

Alt=198 doesn't look correct at all.

Cheers,
Daniel

daniel

Guys, I found the bug, I'll push to github and we'll release again tomorrow.

daniel

Here's the fix: https://github.com/pycom/pycom-micropython-sigfox/commit/195813d432d9f41314ef9923104b21db1282edf8

livius

Now i2c work for me back in 1.6.9 :)

arneme

@daniel While trying to do some rudimentary testing of the Bluetooth functionality in version 1.6.9.b1 I noticed something strange. The adv.mac seems to be incomplete (i.e. in the print("Try to connect to the H7 with mac:", adv.mac) line only a few of the bytes in the mac is printed out) and thus I am not able to connect to discovered peripherals.

from network import Bluetooth
import time
bt = Bluetooth()
bt.start_scan(-1)

# Code to connect to Polar H7 Bluetooth heartrate sensor
# The detected Heartrate is "published" over the LoRaWAN network

while True:
    adv = bt.get_adv()
    if adv:
        name = bt.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)
        if name is not None:
            if name.startswith("Polar H7"):
                print ("Found: " + name)
                bt.stop_scan()
                
                try:
                    print("Try to connect to the H7 with mac:", adv.mac)
                    conn = bt.connect(adv.mac)
                    print("Connected...")
                    services = conn.services()
                    print("Got services...")
                    for service in services:
                        time.sleep(0.05)
                        # According to specification from Polar, service.uuid = 0x180D is Heart Rate and char.uuid = 2a37 is value in beats per minutes
                        if service.uuid() == 0x180D:
                            print('Reading from service %x' % service.uuid())
                            chars = service.characteristics()
                            print("Print chars found")
                            for char in chars:
                                print('char %x' % char.uuid())
                except Exception as ex:
                    print("Exception caught...")
                    print(ex)

jmarcelino

@arneme
Can you post an example of your print() result please?

For example I get:

MAC: b'\x14X\x02\x00\x00\xa9'
MAC: b'gFb\xd0\xc1\xf5'
MAC: b'\x14X\x00\x03\x01k'
MAC: b"\xc2f\xf7'\xec\xc0"

all 6 bytes long, though difficult to read because print only shows hex for non-printable characters.

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New firmware release 1.6.9.b1 (frozen code support and framebuf)

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