[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
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>>>>>>>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>> _______________________________________________
>>>>>>>>> OvmsDev mailing list
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>>>>>>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> OvmsDev mailing list
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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
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> 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
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>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>
>>>>
>>>>
>>>> --
>>>> Üdvözlettel:
>>>> Kovács Tamás
>>>> _______________________________________________
>>>> OvmsDev mailing list
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>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>
>>>
>>> _______________________________________________
>>> OvmsDev mailing list
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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
>> _______________________________________________
>> 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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--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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