Difference between revisions of "How to use EEPROM"
From IGEP - ISEE Wiki
m (→IGEP BERLIN Expansion) |
m (→Play with EEPROM memory) |
||
| Line 18: | Line 18: | ||
==IGEP PARIS Expansion== | ==IGEP PARIS Expansion== | ||
<section begin=paris /> | <section begin=paris /> | ||
| − | For example, the following writes the value 0x22 to register 0x10 of device | + | For example, the following writes the value 0x22 to register 0x10 of device 0x51 on i2c bus 3: |
<pre>i2cset -f -y 3 0x51 0x10 0x22 | <pre>i2cset -f -y 3 0x51 0x10 0x22 | ||
i2cget -f -y 3 0x51 0x10</pre> | i2cget -f -y 3 0x51 0x10</pre> | ||
| Line 25: | Line 25: | ||
==IGEP BERLIN Expansion== | ==IGEP BERLIN Expansion== | ||
<section begin=berlin /> | <section begin=berlin /> | ||
| − | For example, the following writes the value 0x22 to register 0x10 of device | + | For example, the following writes the value 0x22 to register 0x10 of device 0x51 on i2c bus 3: |
<pre>i2cset -f -y 3 0x51 0x10 0x22 | <pre>i2cset -f -y 3 0x51 0x10 0x22 | ||
i2cget -f -y 3 0x51 0x10</pre> | i2cget -f -y 3 0x51 0x10</pre> | ||
Revision as of 16:31, 5 September 2012
Contents
Overview
The IGEP expansion boards (except IGEP New York) provides an AT24C01B serial EEPROM memory which is connected to the OMAP via I2C (register 50).
Play with EEPROM memory
Use i2c-tools to manage it:
i2cget <bus> <chip> <register> i2cset <bus> <chip> <register> <value>
IGEPv2 Expansion
For example, the following writes the value 0x22 to register 0x10 of device 0x50 on i2c bus 2:
i2cset -f -y 2 0x50 0x10 0x22 i2cget -f -y 2 0x50 0x10
IGEP PARIS Expansion
For example, the following writes the value 0x22 to register 0x10 of device 0x51 on i2c bus 3:
i2cset -f -y 3 0x51 0x10 0x22 i2cget -f -y 3 0x51 0x10
IGEP BERLIN Expansion
For example, the following writes the value 0x22 to register 0x10 of device 0x51 on i2c bus 3:
i2cset -f -y 3 0x51 0x10 0x22 i2cget -f -y 3 0x51 0x10
Know more
See also: i2dump(8), i2cget(8) and i2cset(8) man page
