Date: Sun, 1 Mar 2015 20:00:15 -0800 From: Waitman Gobble <gobble.wa@gmail.com> To: Luiz Otavio O Souza <lists.br@gmail.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Chronodot on RPI Message-ID: <CAFuo_fydwJLThQJMMJoyZnZ34f=N9qQof_mNUeT55JUCzE1tzQ@mail.gmail.com> In-Reply-To: <CAB=2f8xesDjDkUc7xr0N5fJNThLW2B-52k5UukSjAsQK12We6Q@mail.gmail.com> References: <CAFuo_fzzGV%2B=FcQ=bqxeAQBL9kGusDfW=t5oF6og2kOrN8WZZQ@mail.gmail.com> <CAB=2f8xesDjDkUc7xr0N5fJNThLW2B-52k5UukSjAsQK12We6Q@mail.gmail.com>
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On Sun, Mar 1, 2015 at 7:46 PM, Luiz Otavio O Souza <lists.br@gmail.com> wrote:
> On 1 March 2015 at 16:12, Waitman Gobble wrote:
>> Anyone have luck with the ChronoDot (D3231) on Raspberry Pi?
>> I have a RPI B+ (rev 1), tried with HEAD r277133 and r279488 without luck.
>>
>>
>> # uname -a
>> FreeBSD ARTiming150228 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r277133:
>> Tue Jan 13 20:18:52 PST 2015
>> waitman@rpidev.waitman.net:/usr/home/waitman/crochet-freebsd/work/obj/arm.armv6/usr/src/sys/TMRDEV
>> arm
>>
>> # uname -a
>> FreeBSD raspberry-pi 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r279488: Sun
>> Mar 1 10:27:33 PST 2015
>> waitman@rpidev.waitman.net:/usr/home/waitman/crochet-freebsd/work/obj/arm.armv6/usr/src/sys/TMRDEV
>> arm
>>
>>
>> # dmesg | grep iic
>> iichb0: <BCM2708/2835 BSC controller> mem 0x205000-0x20501f irq 61 on simplebus0
>> iicbus0: <OFW I2C bus> on iichb0
>> iic0: <I2C generic I/O> on iicbus0
>> iichb1: <BCM2708/2835 BSC controller> mem 0x804000-0x80401f irq 61 on simplebus0
>> iicbus1: <OFW I2C bus> on iichb1
>> iic1: <I2C generic I/O> on iicbus1
>>
>>
>> a) tried the DS1307 program from Vadim Zaigrin, without success.
>>
>> b) tried i2cscan from Winston Smith,
>>
>> only get errors. ie,
>>
>> ioctl(I2CRDWR) failed: Input/output error
>>
>> I have VCC pin 1, GND pin 6, SDA on 3 and SCL on 5.
>>
>> trying /dev/iic0 and /dev/iic1
>>
>> Any help/suggestions apprecitated.
>>
>> Thank you,
>>
>>
>> --
>> Waitman Gobble
>> Los Altos California USA
>> 510-830-7975
>
> Hi,
>
> I've just committed a driver for DS3231 (r279399), I'm using a
> different breakout board but chronodot will work just fine.
>
> Unfortunately you need to add this device to your kernel and also make
> the appropriate changes on DTS.
>
> Please add 'device ds3231' to RPI-B kernel and the following to RPi DTS:
>
> Index: rpi.dts
> ===================================================================
> --- sys/boot/dst/dts/arm/rpi.dts (revision 279408)
> +++ sys/boot/dst/dts/arm/rpi.dts (working copy)
> @@ -292,6 +292,14 @@
> broadcom,function = "ALT3";
> };
> };
> +
> + bsc1 {
> + rtc {
> + compatible = "maxim,ds3231";
> + reg = <0xd0>;
> + };
> + };
> +
> usb {
> hub {
> compatible = "usb,hub", "usb,device";
>
> Rebuild your kernel and DTB (binary version of DTS) update your SD
> card and hopefully everything will work.
>
> The ds3231(4) settings can be viewed with sysctl dev.ds3231
>
> I've made some modifications to Winston's i2cscan which should now work on RPi:
>
> # ./i2cscan /dev/iic1
> Checking device: /dev/iic1
> 0 1 2 3 4 5 6 7 8 9 a b c d e f
> 00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> 20: 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> 40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- 4F
> 50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- --
> 60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
> 70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>
> 20 - i2c GPIO expander
> 48 and 4f - lm75
> 57 - ? (I don't remember what is this one :)
> 68 - DS3231
>
> You can find the modified i2cscan here:
> https://people.freebsd.org/~loos/i2cscan.c
>
> Luiz
Thanks Luiz, I'll try it out tonight. I appreciate the update.
Happy R450 :)
I made a wallpaper from my recent Copocabana photo
http://kde-look.org/CONTENT/content-files/167965-copocabana.png
--
Waitman Gobble
Los Altos California USA
510-830-7975
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