From: Danny H. <da...@co...> - 2007-04-30 16:54:15
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I've followed the instructions in the Wiki to add support for the DS1307 to a 2.6.15 buildroot (r1307). It appears to work OK, except that no entry is created in /dev (e.g. /dev/rtc or whatever) and thus S10clock fails. I have tried to create an appropriate entry using mknod, but to no avail (I'm not sure what the correct options are)? Also, when I query the DS1307 using the I2C test utility linked on the I2C quickstart page, I always get the same value: 0x80000001010003, shouldn't the 'seconds' portion of this be changing? The RTC module is connected to the I2C pins of the Robostix: SCL-RX, SDA-TX, GND-GND and 5V - V, +5V power is being supplied to the RoboStix. Any ideas or suggestions would be greatly appreciated. Thanks in advance, Danny Hughes, Computing Department, Lancaster University, UK. E-Mail: da...@co... |
From: J. M. <mul...@ka...> - 2008-04-24 09:28:37
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Hello, About non counting RTC : At first, "./i2c --count=8 0x68 readbyte 0" gave me the same constant value after setting it with "./i2c --count=8 0x68 wb 0x0 0x3006000203030600", the RTC began to count ! I'm currently looking for a way to tell linux to use it ... Jerome On Mon, Apr 30, 2007 at 6:47 PM, Danny Hughes <da...@co...> wrote: > I've followed the instructions in the Wiki to add support for the DS1307 > to > a 2.6.15 buildroot (r1307). It appears to work OK, except that no entry is > created in /dev (e.g. /dev/rtc or whatever) and thus S10clock fails. I > have > tried to create an appropriate entry using mknod, but to no avail (I'm not > sure what the correct options are)? > > Also, when I query the DS1307 using the I2C test utility linked on the I2C > quickstart page, I always get the same value: 0x80000001010003, shouldn't > the 'seconds' portion of this be changing? > > The RTC module is connected to the I2C pins of the Robostix: SCL-RX, > SDA-TX, > GND-GND and 5V - V, +5V power is being supplied to the RoboStix. > > Any ideas or suggestions would be greatly appreciated. > > Thanks in advance, > > Danny Hughes, > Computing Department, Lancaster University, UK. > E-Mail: da...@co... > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |