[Ovmsdev] OVMS v3.3 hardware

Michael Balzer dexter at expeedo.de
Tue Oct 12 20:45:59 HKT 2021


> Michael should be very happy with that @ESP32D0WDQ5 (revision 3).

I am indeed :-)

Regards,
Michael


Am 12.10.21 um 13:38 schrieb Mark Webb-Johnson:
> First ‘final’ v3.3 sample received (the one that also went to the 
> certification lab):
>
>     rst:0xc (SW_CPU_RESET),boot:0x1b (SPI_FAST_FLASH_BOOT)
>     configsip: 0, SPIWP:0xee
>     clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
>     mode:DIO, clock div:2
>     load:0x3fff0018,len:4
>     load:0x3fff001c,len:4796
>     load:0x40078000,len:0
>     load:0x40078000,len:14896
>     entry 0x40078d74
>     I (1062) psram: This chip is ESP32-D0WD
>     I (1062) spiram: Found 64MBit SPI RAM device
>     I (1062) spiram: SPI RAM mode: flash 40m sram 40m
>     I (1065) spiram: PSRAM initialized, cache is in low/high (2-core)
>     mode.
>     I (1072) cpu_start: Pro cpu up.
>     I (1076) cpu_start: Application information:
>     I (1081) cpu_start: Project name:     ovms3
>     I (1086) cpu_start: App version:  3.2.016-393-g07db2f8d
>     I (1092) cpu_start: Compile time:     Sep 16 2021 21:09:48
>     I (1099) cpu_start: ELF file SHA256:  8aa1db50ae1ea15d...
>     I (1105) cpu_start: ESP-IDF:  v3.3.4-848-g1ff5e24b1
>     I (1111) cpu_start: Starting app cpu, entry point is 0x40081720
>     I (1103) cpu_start: App cpu up.
>     I (1989) spiram: SPI SRAM memory test OK
>     I (1989) heap_init: Initializing. RAM available for dynamic
>     allocation:
>     I (1989) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
>     I (1996) heap_init: At 3FFBE250 len 00021DB0 (135 KiB): DRAM
>     I (2002) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
>     I (2008) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
>     I (2015) heap_init: At 4009D5A4 len 00002A5C (10 KiB): IRAM
>     I (2021) cpu_start: Pro cpu start user code
>     I (2026) spiram: Adding pool of 4096K of external SPI memory to
>     heap allocator
>     ...
>     Welcome to the Open Vehicle Monitoring System (OVMS) - Async Console
>     Firmware: 3.2.016-393-g07db2f8d/factory/main
>     Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/3
>     ...
>     OVMS# module memory
>     Free 8-bit 103580/273840, 32-bit 6440/10796, SPIRAM 3460832/4194252
>     ...
>     Module
>       Version:  3.2.016-393-g07db2f8d/factory/main (build idf
>     v3.3.4-848-g1ff5e24b1 Sep 16 2021 21:12:48)
>       Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/3
>
>     $ esptool.py --port /dev/tty.usbserial-0001 --baud 115200 chip_id
>     esptool.py v2.8
>     Serial port /dev/tty.usbserial-0001
>     Connecting....
>     Detecting chip type... ESP32
>     Chip is ESP32D0WDQ5 (revision 3)
>     Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse,
>     Coding Scheme None
>     Crystal is 40MHz
>
>
> Michael should be very happy with that @ESP32D0WDQ5 (revision 3).
>
> I’m working through the other tests now, but so far so good.
>
> Regards, Mar.
>
>> On 14 Sep 2021, at 3:01 PM, Mark Webb-Johnson <mark at webb-johnson.net 
>> <mailto:mark at webb-johnson.net>> wrote:
>>
>> Progress update…
>>
>> I’ve completed the basic support for plugin modem drivers and SIM7600 
>>  in the for-v3.3 branch, and it seems stable on my bench and car 
>> (although I never saw many problems before with this). I would still 
>> appreciate it if others could test and feedback any crashes they get. 
>> You can get the update OTA from api.openvehicles.com 
>> <http://api.openvehicles.com/> by setting tag ‘pre’.
>>
>> We’ve also completed the testing of the hardware. The DTR low-power 
>> control option seems to be working well (but will require firmware 
>> support later). The ‘final’ list of hardware changes are as follows:
>>
>>   * Main Board:
>>       o Silkscreen label “OVMS V3.3” (with date of production batch)
>>       o Change to improved internal antenna cables for GSM and GPS
>>       o Strengthen soldering on micro USB connector
>>       o Strengthen soldering on power supply capacitors
>>       o WROVER module to use revision 3 ESP32
>>       o Add 0.1uF capacitor to 12v measuring voltage divider ADC
>>         input
>>         (https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/adc.html#minimizing-noise
>>         <https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/adc.html#minimizing-noise>)
>>
>>   * Modem Board:
>>       o Silkscreen label “OVMS MDM V3.3” (with date of production batch)
>>       o Add support for SIM7600 module
>>       o Fixed DTR support
>>       o Improve/check voltage regulator and capacitor protection
>>       o Reduce brightness of blue LED by at least 50%
>>       o Airplane mode pin fix (working ok now, but safer to pull
>>         up/down properly)
>>       o Confirm PWRKEY circuit tuning
>>
>>   * Enclosure
>>       o Product label - just one label with CE and FCC certification
>>         for global use
>>
>>
>> We are now producing a few final samples of the above to go to the 
>> certification labs for CE, FCC, and ROHS testing later this month. We 
>> hope that certification will take 6 to 8 weeks and be complete around 
>> the end of November. Once that is done, we should be able to go to 
>> full production in time for Christmas. Pricing will be confirmed 
>> early December, but likely more expensive than v3.2 due to the extra 
>> cost for SIM7600G and certification fees.
>>
>> Stock of existing SIM5360 modules are as follows:
>>
>>   * EU kits; in stock at open energy monitor (but selling out fast
>>     and likely to be unavailable soon).
>>   * US kits; in stock at Medlock, Fasttech, and Open Vehicles (HK).
>>
>>
>> Regards, Mark
>>
>>> On 30 Aug 2021, at 2:03 PM, Mark Webb-Johnson <mark at webb-johnson.net 
>>> <mailto:mark at webb-johnson.net>> wrote:
>>>
>>> I now have two prototypes of the 4G modem using SIM7600G R2 chip for 
>>> OVMS v3.
>>>
>>> One is for my own work, but willing to send the other free to a 
>>> volunteer developer willing to spend time working with me to develop 
>>> and test this new option. Obviously looking for someone who has 
>>> spent some time on the OVMS code base, with a good history of 
>>> contributions to the project and a willingness to work on improving 
>>> the cellular modem driver.
>>>
>>> Any volunteers? Please eMail me directly (mark at openvehicles.com 
>>> <mailto:mark at openvehicles.com>).
>>>
>>> Regards, Mark.
>>>
>>> <IMG_9926.png>
>>>
>>>> On 17 Aug 2021, at 1:30 PM, Mark Webb-Johnson 
>>>> <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>
>>>> For the 4G modem options we need to go through FCC, CE, and ROHS 
>>>> certification. Minimising/eliminating the changes to the main board 
>>>> simplifies this (and brings down the exorbitant costs) but if there 
>>>> is anything urgent / necessary, now is the time to do it.
>>>>
>>>> The goal here is to maintain 100% compatibility with existing OVMS 
>>>> main boards, to keep this is a simple and relatively cheap upgrade 
>>>> of the modem board.
>>>>
>>>> So far, I have come up with this minimal list:
>>>>
>>>>  1. Main board v3.3: Improve soldering of micro USB port. Bigger
>>>>     solder pads, and more solder to secure it better.
>>>>
>>>>  2. Modem board v1.3: Add support for SIM7600 module.
>>>>
>>>>  3. Modem board v1.3: Fix support for DTR sleep/awake support.
>>>>
>>>>
>>>> Is there anything else required for this update?
>>>>
>>>> Regards, Mark.
>>>>
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>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev 
>>>> <http://lists.openvehicles.com/mailman/listinfo/ovmsdev>
>>>
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>>
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>
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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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