5 Nov
2013
5 Nov
'13
9:17 a.m.
On Monday, November 4, 2013 21:47:51 Derek wrote:
joem <joem <at> martindale-electric.co.uk> writes:
I2C eeproms dirt cheap - have two eeproms - one user data (such as
calibration data
for instruments, keys, etc) and one for system data.
Note, you already need 2 eeproms, one on the CPU card and one on the carrier board. I believe they are supposed to be on different I2C busses?
yes; i2c devices on the card are required to be on an internal-only i2c bus, for the obvious addressing collision problems that would arise otherwise.
However, any time you're going to put user-data in a location, why not use mass-storage?
for the same reason we don’t put the device tree or device id in mass storage :)
--
Aaron J. Seigo