# when i start my board i got i2c\_addr read error. **URL:** \ **Category:** Windows CE\ **Tags:** connectcorewi-imx53\ **Created:** [September 18, 2012, 9:41am UTC](https://forums.digi.com/t/when-i-start-my-board-i-got-i2c-addr-read-error/11388 "2012-09-18T09:41:31Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![shiyad](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@shiyad](https://forums.digi.com/u/shiyad)\ **Post date:** [September 18, 2012, 9:41am UTC](https://forums.digi.com/t/when-i-start-my-board-i-got-i2c-addr-read-error/11388/1 "2012-09-18T09:41:31Z")
when i start my board i got i2c\_addr read error. This is my console output. //-------------------------------------------------WHEN STARTING BOARD-------------------------------------------------// i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) ½É]¥µ¥¹5aÕͽ¹ed )ÕµÁMÑ5½É SjRjªµ ½½ÑÉÁÁå¹ÁáµU µÅ¹É¹Éµ¡ÉÁÉÁÅɵÅÉéÑÍéÑÁ¥µ ÉÑ-¥ÑÙ±½Áµ¹Ñ ½ éÉ5)5%É å)5ÿNAND: 512 MiB MMC: FSL\_ESDHC: 0, FSL\_ESDHC: 1 DRAM: 512 MB In: serial Out: serial Err: serial Net: got MAC address: 00:04:f3:ff:ff:fa FEC0 [PRIME] Autoscript from TFTP… [not available] ## User Key 1 pressed CCWMX53 # mmc rescan 1 CCWMX53 # flpart Nr | Name | Start | Size | Type | FS | Flags ## 0 | U-Boot | 0 | 1 MiB | U-Boot | | fixed 1 | NVRAM | 1 MiB | 512 KiB | NVRAM | | fixed 2 | Splash | 1536 KiB | 1 MiB | Splash-Screen | | 3 | Kernel | 2560 KiB | 40 MiB | WinCE-Kernel | | 4 | Filesys | 43520 KiB | 480768 KiB | Filesystem | ExFAT | Commands: a) Append partition d) Delete partition m) Modify partition p) Print partition table r) Reset partition table q) Quit Cmd (? for help)\> r OS Types: n) None l) Linux a) Android w) WinCE o) NET+OS OS (? for help)\> w Partition table reset Nr | Name | Start | Size | Type | FS | Flags 0 | U-Boot | 0 | 1 MiB | U-Boot | | fixed 1 | NVRAM | 1 MiB | 512 KiB | NVRAM | | fixed 2 | Splash | 1536 KiB | 1 MiB | Splash-Screen | | 3 | Kernel | 2560 KiB | 40 MiB | WinCE-Kernel | | 4 | Filesys | 43520 KiB | 480768 KiB | Filesystem | ExFAT | Cmd (? for help)\> q Partition table NOT changed! CCWMX53 # update wce mmc 1:1 fat wce-CCWiMX53 reading wce-CCWiMX53 … 34019400 bytes read Calculated checksum = 0x2144df1c Updating partition ‘Kernel’ Erasing: complete Writing: complete Verifying: complete Update successful CCWMX53 # //------------------------------THIS IS AFTER UPDATE WCE--------------------------------------------// i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) i2c\_addr failed i2c\_addr:trigger start fail(81) ½É]¥µ¥¹5aÕͽ¹ed )ÕµÁMÑ5½É SjRjªµ ½½ÑÉÁÁå¹ÁáµU µÅ¹É¹Éµ¡ÉÁÉÁÅɵÅÉéÑÍéÑÁ¥µ ÉÑ-¥ÑÙ±½Áµ¹Ñ ½ éÉ5)5%É å)5ÿNAND: 512 MiB MMC: FSL\_ESDHC: 0, FSL\_ESDHC: 1 DRAM: 512 MB In: serial Out: serial Err: serial Net: got MAC address: 00:04:f3:ff:ff:fa FEC0 [PRIME] Autoscript from TFTP… [not available] User Key 1 pressed CCWMX53 # If anyone have good idea about this? ---
**Author:** ![mcarver](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@mcarver](https://forums.digi.com/u/mcarver)\ **Post date:** [September 24, 2012, 9:11pm UTC](https://forums.digi.com/t/when-i-start-my-board-i-got-i2c-addr-read-error/11388/2 "2012-09-24T21:11:16Z")
It’s probably having trouble communicating with the PMIC on the board. Try disconnecting your RTC battery. ---
**Author:** ![cpigilam](https://avatars.discourse-cdn.com/v4/letter/c/fbc32d/32.png) [@cpigilam](https://forums.digi.com/u/cpigilam)\ **Post date:** [July 26, 2013, 9:08am UTC](https://forums.digi.com/t/when-i-start-my-board-i-got-i2c-addr-read-error/11388/3 "2013-07-26T09:08:29Z")
Hello, Can you check , does your dev board’s power supply is working fine?