FAQ: [#6197] can't regonize lcd device in i2c lcd driver testing over GPIO(2010)

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[#6197] can't regonize lcd device in i2c lcd driver testing over GPIO

Submitted By: angelia wu

Open Date

2010-08-20 00:21:51     Close Date

2010-08-30 01:44:42

Priority:

Medium     Assignee:

steven miao

Status:

Closed     Fixed In Release:

N/A

Found In Release:

2010R1     Release:

Blackfin Linux:2010R1

Category:

N/A     Board:

STAMP

Processor:

BF533     Silicon Revision:

Is this bug repeatable?:

Yes     Resolution:

Fixed

Uboot version or rev.:

    Toolchain version or rev.:

svn-4681

App binary format:

N/A     

Summary: can't regonize lcd device in i2c lcd driver testing over GPIO

Details:

 

can't regonize lcd device in i2c lcd driver testing over GPIO.

when 'ls' in the folder 'sys/bus/i2c/devices' ,it should show a folder "0022.*(\[0-9]-002f)",but it hasn't. so the lcd can't show anything.

the test steps as follow.

 

root:/> modprobe bfin_twi_lcd

bfin_twi_lcd: loaded

root:/> lsmod

Module                  Size  Used by

bfin_twi_lcd            2553  0

root:/> cd sys/bus/i2c/devices

root:/sys/bus/i2c/devices> ls

0-0022  0-002b  i2c-0

 

 

root:/> twilcd_test -h

TWI LCD Test Application

 

Usage: twilcd_test [-h?v] [-c] [-d CONTROLLER] [-p POSITION] [Message String]

        -h?            this help

        -v             print version info

        -c             Clear Display

        -d Number      use 1,2,3 for CONTROLLER 1,2,BOTH

        -p Char POS    Position where to put the string

 

Example: twilcd_test -p 0 "Hello World !"

root:/> twilcd_test -p 0 "Hello World !"

TWI LCD Test Application

 

Position               : 0

Message                : Hello World !

root:/> twilcd_test  -p 0 "`uptime`"

TWI LCD Test Application

 

Position               : 0

Message                :  03:12:31 up 1 min, load average: 0.00, 0.00, 0.00

root:/> twilcd_test  -p 4 "`date`"

TWI LCD Test Application

 

Position               : 4

Message                : Fri Nov 14 03:12:36 UTC 2014

root:/> twilcd_test "`cat /proc/interrupts | grep BFIN_UART_TX`"

TWI LCD Test Application

 

Message                :  22:      17883      INTN  BFIN_UART_TX

 

 

 

the following is boot log.

 

SMC91111: MAC 00:e0:22:fe:07:59

Using SMC91111-0 device

TFTP from server 10.100.4.174; our IP address is 10.100.4.50

Filename 'uImage'.

Load address: 0x1000000

Loading: #################################################################

         #################################################################

         #################################################################

         #################################################################

         ###################

done

Bytes transferred = 4088419 (3e6263 hex)

## Booting kernel from Legacy Image at 01000000 ...

   Image Name:   bf533-2.6.34.4-ADI-2010R1-pre-sv

   Created:      2010-08-20   2:14:05 UTC

   Image Type:   Blackfin Linux Kernel Image (gzip compressed)

   Data Size:    4088355 Bytes =  3.9 MB

   Load Address: 00001000

   Entry Point:  0019df90

   Verifying Checksum ... OK

   Uncompressing Kernel Image ... OK

Starting Kernel at = 0019df90

Linux version 2.6.34.4-ADI-2010R1-pre-svn9082 (test@uclinux41) (gcc version 4.3.5 (ADI-trunk/svn-4681) ) #76 Fri Aug 20 10:14:00 CST 2010

register early platform devices

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart0] enabled

early printk enabled on early_BFuart0

Limiting kernel memory to 56MB due to anomaly 05000263

Board Memory: 128MB

Kernel Managed Memory: 128MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00001000-0x00119718

  rodata    = 0x00119718-0x001758f0

  bss       = 0x00176000-0x001863ac

  data      = 0x001863ac-0x00196000

    stack   = 0x00194000-0x00196000

  init      = 0x00196000-0x007bf000

  available = 0x007bf000-0x03800000

  DMA Zone  = 0x07f00000-0x08000000

Hardware Trace Active and Enabled

Boot Mode: 0

Blackfin support (C) 2004-2010 Analog Devices, Inc.

Compiled for ADSP-BF533 Rev 0.3

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 497 MHz core clock and 82 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

  External memory: cacheable in instruction cache

Data Cache Enabled for CPU0

  External memory: cacheable (write-back) in data cache

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 14224

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=11059200 earlyprintk=serial,uart0,57600 console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174:10.100.4.174:f

PID hash table entries: 256 (order: -2, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory available: 48844k/131072k RAM, (6308k init code, 1121k kernel code, 499k data, 1024k dma, 73276k reserved)

Hierarchical RCU implementation.

NR_IRQS:81

Configuring Blackfin Priority Driven Interrupts

console [ttyBF0] enabled, bootconsole disabled

console [ttyBF0] enabled, bootconsole disabled

Calibrating delay loop... 989.18 BogoMIPS (lpj=1978368)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (16 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 64 KB (51 KB free)

NET: Registered protocol family 16

Blackfin DMA Controller

stamp_init(): registering device resources

bio: create slab <bio-0> at 0

bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@5

Switching to clocksource bfin_cs_cycles

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 2048 (order: 2, 16384 bytes)

TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

msgmni has been set to 95

io scheduler noop registered

io scheduler cfq registered (default)

bfin-uart: Blackfin serial driver

bfin-uart.0: ttyBF0 at MMIO 0xffc00400 (irq = 21) is a BFIN-UART

brd: module loaded

smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>

eth0: SMC91C11xFD (rev 1) at 20300300 IRQ 40 [nowait]

eth0: Ethernet addr: 00:e0:22:fe:07:59

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

i2c /dev entries driver

i2c-gpio i2c-gpio.0: using pins 2 (SDA) and 3 (SCL)

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 2014-11-14 03:11:17 UTC (1415934677)

eth0: link down

IP-Config: Complete:

     device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,

     host=bf533-stamp, domain=, nis-domain=(none),

     bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

dma_alloc_init: dma_page @ 0x027c3000 - 256 pages at 0x07f00000

Freeing unused kernel memory: 6308k freed

eth0: link up, 100Mbps, full-duplex, lpa 0x41E1

                           _____________________________________

        a8888b.           / Welcome to the uClinux distribution \

       d888888b.         /       _     _                         \

       8P"YP"Y88        /       | |   |_|            __  __ (TM)  |

       8|o||o|88  _____/        | |    _ ____  _   _ \ \/ /       |

       8'    .88       \        | |   | |  _ \| | | | \  /        |

       8`._.' Y8.       \       | |__ | | | | | |_| | /  \        |

      d/      `8b.       \      \____||_|_| |_|\____|/_/\_\       |

     dP   .    Y8b.       \   For embedded processors including   |

    d8:'  "  `::88b        \    the Analog Devices Blackfin      /

   d8"         'Y88b        \___________________________________/

  :8P    '      :888

   8a.   :     _a88P         For further information, check out:

._/"Yaa_:   .| 88P|            - http://blackfin.uclinux.org/

\    YP"    `| 8P  `.          - http://docs.blackfin.uclinux.org/

/     \.___.d|    .'           - http://www.uclinux.org/

`--..__)8888P`._.'  jgs/a:f    - http://www.analog.com/blackfin

 

Have a lot of fun...

 

 

BusyBox v1.16.2 (2010-08-20 10:12:26 CST) hush - the humble shell

 

 

Follow-ups

 

--- steven miao                                              2010-08-26 05:04:43

new driver for ad5252 digital potentiometer. See wiki to update test steps

https://docs.blackfin.uclinux.org/doku.php?id=blackfin_twi_lcd_hd44780_based_driver#blackfin_test_programs

 

--- angelia wu                                               2010-08-30 01:44:42

i test it again according wiki  and now the bug is disappear.

so i closed the bug 6197.

Thank you steven miao.

 

 

 

    Files

    Changes

    Commits

    Dependencies

    Duplicates

    Associations

    Tags

 

File Name     File Type     File Size     Posted By

user.533i2c_lcd.config    application/x-config    48829    angelia wu

kernel.533i2c_lcd.config    application/x-config    38644    angelia wu

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