NFC中的主题 Re: PN7120 i2c errors read and write https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478659#M82 <HTML><HEAD></HEAD><BODY><P>Hello <A _jive_internal="true" data-content-finding="Community" data-userid="279668" data-username="bryantrilck" href="https://community.nxp.com/people/bryantrilck">Bryan</A>,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; According to above logs, I feel there are 2 possibilities for the issue:</P><P>(1) Didn't load linux driver of PN7120.</P><P>When you configure linux kernel by "make menuconfig" command, did you select it's driver ?</P><P>(2) Checking device tree</P><P>Check device tree of your board , please ! PN7120 is I2C device, so it should be mounted corresonding I2C bus(such as I2C1/2/3 etc)</P><P>&nbsp;&nbsp;&nbsp; After BSP and linux driver are both loaded correctly, you will find PN7120 device in path /dev/, only the step is finished, DemoAPP can be run successfully.</P><P>&nbsp;&nbsp;&nbsp; Due to no debugging conditions, so we can only give you some advice. Hope above suggestions are able to help you solve the issue.</P><P></P><P>Regards,</P><P>weidong</P></BODY></HTML> Thu, 02 Jun 2016 09:13:26 GMT weidong_sun 2016-06-02T09:13:26Z PN7120 i2c errors read and write https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478658#M81 <HTML><HEAD></HEAD><BODY><P>Hi, </P><P></P><P>I am trying to use PN7120 with Intel Edison and Yocto kernel 3.10.17.</P><P>I configured platform data, GPIO and I2C.</P><P>When I start ./linux_libnfc-nci/nfcDemoApp poll</P><P></P><P>#########################################################################################</P><P>##&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; NFC demo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ##</P><P>#########################################################################################</P><P>##&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Poll mode activated&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ##</P><P>#########################################################################################</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ... press enter to quit ...</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; Entering phNxpNciHal_init_monitor</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; Returning with SUCCESS</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; Opening port=/dev/pn544</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; phTmlNfc_i2c_reset(), VEN level 1</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; phTmlNfc_i2c_reset(), VEN level 0</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; phTmlNfc_i2c_reset(), VEN level 1</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Reader Thread Started................</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Started................</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Running................</P><P>PN54X - Read requested.....</P><P>PN54X - Tml Writer Thread Running................</P><P></P><P></P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Write requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_write() errno : 5</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Posting Fresh Write message.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Running................</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write error status = 0x1ff</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write_unlocked failed - PN54X Maybe in Standby Mode - Retry</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Write requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_write() errno : 5</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Posting Fresh Write message.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Running................</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write error status = 0x1ff</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write_unlocked failed - PN54X Maybe in Standby Mode - Retry</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Write requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_write() errno : 5</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Posting Fresh Write message.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write error status = 0x1ff</P><P>PN54X - Tml Writer Thread Running................</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write_unlocked failed - PN54X Maybe in Standby Mode - Retry</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Write requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_write() errno : 5</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Posting Fresh Write message.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Running................</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write error status = 0x1ff</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write_unlocked failed - PN54X Maybe in Standby Mode - Retry</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Write requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_write() errno : 5</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Posting Fresh Write message.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Running................</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write error status = 0x1ff</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write_unlocked failed - PN54X Maybe in Standby Mode - Retry</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Write requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_write() errno : 5</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Write.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Posting Fresh Write message.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Tml Writer Thread Running................</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write error status = 0x1ff</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; write_unlocked failed - PN54X Maybe in Standby Mode (max count = 0x6)</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; phTmlNfc_i2c_reset(), VEN level 1</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; phTmlNfc_i2c_reset(), VEN level 0</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; phTmlNfc_i2c_reset(), VEN level 1</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; _i2c_read() [hdr] errno : 79</P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Error in I2C Read.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Read requested.....</P><P></P><P>NxpTml:&nbsp;&nbsp;&nbsp;&nbsp; PN54X - Invoking I2C Read.....</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; PN54X Reset - SUCCESS</P><P></P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; phNxpNciHal_write failed for hal ext</P><P>NxpHal:&nbsp;&nbsp;&nbsp;&nbsp; Force FW Download, NFCC not coming out from Standby</P><P></P><P>Kernel output :</P><P></P><P>[ 1248.409304] pn54x_dev_open : 10,56</P><P>[ 1248.409460] pn54x_dev_ioctl, cmd=1074063617, arg=1</P><P>[ 1248.409479] pn544_enable power on</P><P>[ 1248.613417] pn54x_dev_ioctl, cmd=1074063617, arg=0</P><P>[ 1248.613441] pn544_disable power off</P><P>[ 1248.823398] pn54x_dev_ioctl, cmd=1074063617, arg=1</P><P>[ 1248.823422] pn544_enable power on</P><P>[ 1248.934225] pn54x_dev_read: spurious interrupt detected</P><P>[ 1248.942949] pn54x_dev_write : i2c_master_send returned -121</P><P>[ 1248.951578] pn54x_dev_write : i2c_master_send returned -121</P><P>[ 1248.959695] pn54x_dev_write : i2c_master_send returned -121</P><P>[ 1248.967473] pn54x_dev_write : i2c_master_send returned -121</P><P>[ 1248.975172] pn54x_dev_write : i2c_master_send returned -121</P><P>[ 1248.983654] pn54x_dev_write : i2c_master_send returned -121</P><P>[ 1248.990141] pn54x_dev_ioctl, cmd=1074063617, arg=1</P><P>[ 1248.990161] pn544_enable power on</P><P>[ 1249.193330] pn54x_dev_ioctl, cmd=1074063617, arg=0</P><P>[ 1249.193353] pn544_disable power off</P><P>[ 1249.204157] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.210915] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.217631] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.224367] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.231203] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.237923] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.244779] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.251477] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.258134] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.264821] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.271487] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.278143] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.284843] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.291519] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.298173] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.304854] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.311517] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.318171] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.324858] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.331524] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.338175] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.344851] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.351520] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.358173] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.364846] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.371507] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.378157] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.384841] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.391509] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.398159] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.402951] pn54x_dev_ioctl, cmd=1074063617, arg=1</P><P>[ 1249.402972] pn544_enable power on</P><P>[ 1249.404837] pn54x_dev_read: i2c_master_recv returned -121</P><P>[ 1249.410498] pn54x_dev_read: spurious interrupt detected</P><P>[ 1344.561123] pn54x_dev_release : closing 10,56</P><P></P><P></P><P>Do you have any idea about this errors ?</P></BODY></HTML> Tue, 17 May 2016 15:50:40 GMT https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478658#M81 bryantrilck 2016-05-17T15:50:40Z Re: PN7120 i2c errors read and write https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478659#M82 <HTML><HEAD></HEAD><BODY><P>Hello <A _jive_internal="true" data-content-finding="Community" data-userid="279668" data-username="bryantrilck" href="https://community.nxp.com/people/bryantrilck">Bryan</A>,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; According to above logs, I feel there are 2 possibilities for the issue:</P><P>(1) Didn't load linux driver of PN7120.</P><P>When you configure linux kernel by "make menuconfig" command, did you select it's driver ?</P><P>(2) Checking device tree</P><P>Check device tree of your board , please ! PN7120 is I2C device, so it should be mounted corresonding I2C bus(such as I2C1/2/3 etc)</P><P>&nbsp;&nbsp;&nbsp; After BSP and linux driver are both loaded correctly, you will find PN7120 device in path /dev/, only the step is finished, DemoAPP can be run successfully.</P><P>&nbsp;&nbsp;&nbsp; Due to no debugging conditions, so we can only give you some advice. Hope above suggestions are able to help you solve the issue.</P><P></P><P>Regards,</P><P>weidong</P></BODY></HTML> Thu, 02 Jun 2016 09:13:26 GMT https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478659#M82 weidong_sun 2016-06-02T09:13:26Z Re: PN7120 i2c errors read and write https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478660#M83 <HTML><HEAD></HEAD><BODY><P>NO the device namw should be /dev/pn544. it will never be pn7120. </P><P>Check in all porting guide</P></BODY></HTML> Mon, 01 Aug 2016 12:53:29 GMT https://community.nxp.com/t5/NFC/PN7120-i2c-errors-read-and-write/m-p/478660#M83 venkatesansubbu 2016-08-01T12:53:29Z