[Ovmsdev] Brake light control (was Re: Prototyping expansion board)

Michael Balzer dexter at expeedo.de
Mon Apr 22 17:13:16 HKT 2019


Pushed:

https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/commit/b44d466580b6961ada5ae42500c3fea68cab0f8a

- Vehicle framework: regenerative braking signal generation

  New config:
    vehicle [accel.smoothing] = 2.0     Acceleration smoothing factor (samples, 0 = none)
    vehicle [brakelight.enable] = no    Regen brake light enable
    vehicle [brakelight.port] = 1       … MAX7317 output port number (1, 3…9, default 1 = SW_12V)
    vehicle [brakelight.on] = 1.3       … activation threshold (deceleration in m/s²)
    vehicle [brakelight.off] = 0.7      … deactivation threshold (deceleration in m/s²)

  New metrics:
    v.p.acceleration    = acceleration/deceleration in m/s² derived from v.p.speed
    v.e.regenbrake      = regenerative brake light state

- Twizy web UI: regenerative braking signal configuration


I've tested this using an LED on EGPIO_8, I'll do & document the Twizy hardware modification next weekend (if I receive my order in time…).

@Tamás: to add the UI to the Mitsubishi code:

https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/OVMS.V3/components/ovms_webserver/src/web_displays.cpp#L1127

Regards,
Michael


Am 22.04.19 um 04:12 schrieb Mark Webb-Johnson:
> Yes, EGPIO1 had to be used for SN65 control so is not available for general use.
>
> Max7317 has 10 outputs (P0 .. P9):
>
>   * P0 MDM EN (controls modem power)
>   * P1 SW CTL (to BTS452 for EXT 12v power control)
>   * P2 EGPIO1 (SN65 transceiver power saving control)
>   * P3 EGPIO2 available for general use
>   * P4 EGPIO3 available for general use
>   * P5 EGPIO4 available for general use
>   * P6 EGPIO5 available for general use
>   * P7 EGPIO6 available for general use
>   * P8 EGPIO*7* available for general use
>   * P9 EGPIO*8* available for general use
>
>
> Regards, Mark
>
>> On 22 Apr 2019, at 3:36 AM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>
>> Mark,
>>
>> btw: is EGPIO_1 not free for general use? The esp32can SN65 seems to be controlled by that line.
>>
>> Regards,
>> Michael
>>
>>
>> Am 21.04.19 um 15:01 schrieb Mark Webb-Johnson:
>>> If changing vehicle.{h, cpp} framework, I suggest leaving a hook in to allow the vehicle module to override / supplement this. In particular, the brake
>>> light may be controllable via can message on some vehicles.
>>>
>>> You can look at the ext12v circuit to see how to control this.
>>>
>>> The ext12v system is a switchable 12v line already wired up and available on DA26 expansion. Would be trivial to put an external relay on that to switch
>>> brake lights.
>>>
>>> Regards, Mark.
>>>
>>>> On 21 Apr 2019, at 1:32 AM, Tamás Kovács <kommykt at gmail.com <mailto:kommykt at gmail.com>> wrote:
>>>>
>>>> JP1 pin 1 (+3.3) ----- [ 680 Ohms ] ---+--- [ LED ] ----- pin 28 (GND)
>>>>                                        |
>>>>                                     pin 12 (EGPIO_8)
>>>>
>>>> I can connect a 680Ohm resistor first end to pin1, a second end to pin12, and the led positive side to pin12 and negative to pin28(gnd). Now I have only
>>>> 470ohm resistor at home, I tested now with a 4V li-ion battery and my red led power is 4mA. I can use this (470Ohm) resistor or buy a 680Ohm.
>>>> Tomorrow I remove the OVMS module from my car, and create some test, if the resistor (470Ohm) is OK. 
>>>> I used this calculator for led series resistor calculation (I used a red Led): http://ledcalc.com <http://ledcalc.com/>
>>>>
>>>> Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> ezt írta (időpont: 2019. ápr. 20., Szo, 11:16):
>>>>
>>>>     Be aware the MAX71317 outputs are open drain, so you need a pull up resistor to e.g. +3.3. According to the data sheet, the current should stay below 6 mA.
>>>>
>>>>     I've just done a quick test wiring like this:
>>>>
>>>>     JP1 pin 1 (+3.3) ----- [ 680 Ohms ] ---+--- [ LED ] ----- pin 28 (GND)
>>>>                                            |
>>>>                                         pin 12 (EGPIO_8)
>>>>
>>>>     Works as expected.
>>>>
>>>>     Regards,
>>>>     Michael
>>>>
>>>>
>>>>     Am 19.04.19 um 09:59 schrieb Michael Balzer:
>>>>>     Sure.
>>>>>
>>>>>     You need to route an EGPIO line to the DA26 port. For a first test you can add a simple jumper on expansion port pins 10/12 to route EGPIO_8 to GEP_7
>>>>>     (= pin 21 on DA26).
>>>>>
>>>>>     You should then be able to use the "egpio" command to test your LED. EGPIO_1 … _8 labels correspond to MAX7317 ports 2 … 9, so to control EGPIO_8, do:
>>>>>
>>>>>         OVMS# egpio output 9 1  # EGPIO_8 on
>>>>>         OVMS# egpio output 9 0  # EGPIO_8 off
>>>>>
>>>>>     (correct me if I'm wrong, Mark)
>>>>>
>>>>>     I wasn't aware there are other cars in need of something like this. I'll think about adding the logic as an option to the vehicle framework, but I can
>>>>>     send you some patch to test this on your i-MiEV/clone first.
>>>>>
>>>>>     Regards,
>>>>>     Michael
>>>>>
>>>>>
>>>>>     Am 19.04.19 um 09:24 schrieb Tamás Kovács:
>>>>>>     I can add for testing a simple led (with resistor) , same as SimpleConsole (twizy OVMS V2), to show car is recuperating, connected to DA26 external
>>>>>>     expansion port?
>>>>>>
>>>>>>     Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> ezt írta (időpont: 2019. ápr. 19., P, 9:17):
>>>>>>
>>>>>>         As the Mitsubishi code also reads battery current/power level from CAN, it would be trivial to add the same logic there.
>>>>>>
>>>>>>
>>>>>>         Am 19.04.19 um 06:52 schrieb Tamás Kovács:
>>>>>>>         The Trio (Mitsubishi I-Miev and clones) does not activate the brake light on recuperation on 2105 and older models, if this is work is very
>>>>>>>         impressive.
>>>>>>>
>>>>>>>         Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> ezt írta (időpont: 2019. ápr. 18., Cs, 23:08):
>>>>>>>
>>>>>>>             Mark,
>>>>>>>
>>>>>>>             that looks very good. Not sure about general demand, but I think we should have this to enable simple custom hardware I/O extensions.
>>>>>>>
>>>>>>>             For the Twizy, I was thinking about adding logic to control the brake light from the module. The Twizy does not activate the brake light on
>>>>>>>             recuperation, as that's normally (untuned) not very strong. But a tuned Twizy allows one pedal driving, so needs this.
>>>>>>>
>>>>>>>             Looking at our case I also think one custom extension board should fit on top of the modem.
>>>>>>>
>>>>>>>             Regards,
>>>>>>>             Michael
>>>>>>>
>>>>>>>
>>>>>>>             Am 18.04.19 um 02:36 schrieb Mark Webb-Johnson:
>>>>>>>>             It seems the attachments were messed up, so attaching again…
>>>>>>>>
>>>>>>>>             Regards, Mark.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>>             On 17 Apr 2019, at 10:07 PM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                 Design layout. Looks good to me, but open to suggestions...
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                 We can make in sets of three PCBs, to keep prices down.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                 Regards, Mark
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>             On 8 Apr 2019, at 12:05 PM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>             A kit of 5 PCBs + SIP edge connectors + mounting hardware, unsoldered, would be about US$15 + shipping. About US$3/board set. With
>>>>>>>>>>             shipping I don’t think this is worth doing with less than 3 or 5 boards per kit.
>>>>>>>>>>
>>>>>>>>>>             Would this be useful?
>>>>>>>>>>
>>>>>>>>>>             Regards, Mark.
>>>>>>>>>>
>>>>>>>>>>>             On 7 Apr 2019, at 9:08 PM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>             This is the closest we have today:
>>>>>>>>>>>
>>>>>>>>>>>             <image1.jpeg>
>>>>>>>>>>>
>>>>>>>>>>>             That is a bare modem board, with just the sip connectors. The prototype above is a K-line transceiver.
>>>>>>>>>>>
>>>>>>>>>>>             I think it would be trivial, and cheap, to make up what you show. Perhaps just solder ready pads at 0.1” pitch, then the side sip
>>>>>>>>>>>             connectors wired to the first row of pads at each edge. Perhaps 5 PCBs in a kit, with sip edge connectors, unsoldered, in a simple
>>>>>>>>>>>             plastic bag.
>>>>>>>>>>>
>>>>>>>>>>>             Does that sound like something useful? If so, I can ask the China guys for some idea of pricing. If it is just the unsoldered pcbs +
>>>>>>>>>>>             parts, I don’t think it will be expensive.
>>>>>>>>>>>
>>>>>>>>>>>             Regards, Mark
>>>>>>>>>>>
>>>>>>>>>>>             On 7 Apr 2019, at 4:38 PM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>>             Mark,
>>>>>>>>>>>>
>>>>>>>>>>>>             do you know of some kind of prototyping board available that fits to our piggy back expansion layout?
>>>>>>>>>>>>
>>>>>>>>>>>>             Something like this: https://www.robotshop.com/de/de/cytron-arduino-proto-schild.html
>>>>>>>>>>>>
>>>>>>>>>>>>             Regards,
>>>>>>>>>>>>             Michael
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>             Am 03.04.19 um 06:48 schrieb Mark Webb-Johnson:
>>>>>>>>>>>>>
>>>>>>>>>>>>>             If you have work to do on this DA26 expansion ports, this is pretty cool and well built:
>>>>>>>>>>>>>
>>>>>>>>>>>>>                 https://www.aliexpress.com/item/26-Pin-D-SUB-DB26-3-Rows-Serial-Parallel-Port-Serial-Shellless-Male-And-Female-Connector/32886738786.html?spm=a2g0s.9042311.0.0.20924c4dg34EEU
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>             _______________________________________________
>>>>>>>>>>>>>             OvmsDev mailing list
>>>>>>>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>>>>>
>>>>>>>>>>>>             -- 
>>>>>>>>>>>>             Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>>>>>>>>>             Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>>>>>>>>             _______________________________________________
>>>>>>>>>>>>             OvmsDev mailing list
>>>>>>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>>>>             _______________________________________________
>>>>>>>>>>>             OvmsDev mailing list
>>>>>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>>>
>>>>>>>>>>             _______________________________________________
>>>>>>>>>>             OvmsDev mailing list
>>>>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>>             _______________________________________________
>>>>>>>>>             OvmsDev mailing list
>>>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>
>>>>>>>>
>>>>>>>>             _______________________________________________
>>>>>>>>             OvmsDev mailing list
>>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>
>>>>>>>             -- 
>>>>>>>             Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>>>>             Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>>>
>>>>>>>             _______________________________________________
>>>>>>>             OvmsDev mailing list
>>>>>>>             OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>             http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>         -- 
>>>>>>>         Üdvözlettel:
>>>>>>>         Kovács Tamás
>>>>>>>
>>>>>>>         _______________________________________________
>>>>>>>         OvmsDev mailing list
>>>>>>>         OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>>         http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>
>>>>>>         -- 
>>>>>>         Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>>>         Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>>
>>>>>>         _______________________________________________
>>>>>>         OvmsDev mailing list
>>>>>>         OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>         http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>
>>>>>>
>>>>>>
>>>>>>     -- 
>>>>>>     Üdvözlettel:
>>>>>>     Kovács Tamás
>>>>>>
>>>>>>     _______________________________________________
>>>>>>     OvmsDev mailing list
>>>>>>     OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>>     http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>
>>>>>     -- 
>>>>>     Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>>     Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>
>>>>>     _______________________________________________
>>>>>     OvmsDev mailing list
>>>>>     OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>>     http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>
>>>>     -- 
>>>>     Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>     Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>
>>>>     _______________________________________________
>>>>     OvmsDev mailing list
>>>>     OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>>     http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>
>>>>
>>>>
>>>> -- 
>>>> Üdvözlettel:
>>>> Kovács Tamás
>>>> _______________________________________________
>>>> OvmsDev mailing list
>>>> OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>
>>>
>>> _______________________________________________
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>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>
>> -- 
>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>> _______________________________________________
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>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
>
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-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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