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Table of Contents

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We want to run the following command (Note that bus 2 3 address 0X50 is used in this example):

Code Block
python3 TLV_write.py 23 0x50 TLV_CODE_SYS_NAME "MySystem" TLV_CODE_SYS_VERSION "1.0"
Panel
panelIconIdatlassian-info
panelIcon:info:
bgColor#F4F5F7

eeprom example for this :

Code Block
python3 TLVwriter.py 3 0x50 TLV_CODE_SYS_NAME "EmbeddedDevice" TLV_CODE_SYS_SKU "ED-2024" TLV_CODE_SYS_SERIAL_NUMBER "SN123456789" TLV_CODE_SYS_VERSION "1.2.3" TLV_CODE_FAMILY "Industrial" TLV_CODE_MANUF_NAME "TechCorp" TLV_CODE_MANUF_DATE "2024-03-11" TLV_CODE_PLATFORM_NAME "ARM Cortex-A72"

00: 54 6c 76 49 6e 66 6f 00 01 65 00 30 0e 45 6d 62 TlvInfo.?e.0?Emb
10: 65 64 64 65 64 44 65 76 69 63 65 3107 45 44 2d eddedDevice1?ED-
20: 32 30 32 34 32 0b 53 4e 31 32 33 34 35 36 37 38 20242?SN12345678
30: 39 33 05 31 2e 32 2e 33 20 0a 49 6e 64 75 73 74 93?1.2.3 ?Indust
40: 72 69 61 6c 25 08 54 65 63 68 43 6f 72 70 23 0a rial%?TechCorp#?
50: 32 30 32 34 2d 30 33 2d 31 31 24 0e 41 52 4d 20 2024-03-11$?ARM
60: 43 6f 72 74 65 78 2d 41 37 32 fe 04 6e 7e c0 fd Cortex-A72??n~??
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

header

version

Total Payload Length

Type

Length

Value

crc checksum

Info

Finding the I2C Bus Number

To determine the correct I2C bus number, run the following command:

Code Block
sudo i2cdetect -y 1

If no EEPROM device is found, repeat the command with different bus numbers (e.g., 2, 3, 4, etc.) until you detect an address 0x50 or 0x56. Once found, use the corresponding bus number in the script.

Example:

Code Block
sudo i2cdetect -y 2

If the output shows:

Code Block
     0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

Then bus 2 and address 0x50 should be used in the script.

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