[#4914] rts/cts doesn't work on bf548 ezkit board.

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[#4914] rts/cts doesn't work on bf548 ezkit board.

Submitted By: Mingquan Pan

Open Date

2009-02-17 02:42:59     Close Date

2009-07-02 05:37:45

Priority:

Medium     Assignee:

Sonic Zhang

Status:

Closed     Fixed In Release:

N/A

Found In Release:

N/A     Release:

Category:

N/A     Board:

N/A

Processor:

BF548     Silicon Revision:

Is this bug repeatable?:

Yes     Resolution:

Fixed

Uboot version or rev.:

    Toolchain version or rev.:

4.1 of Jan 16

App binary format:

N/A     

Summary: rts/cts doesn't work on bf548 ezkit board.

Details:

 

rts/cts doesn't work on bf548 ezkit board.

 

when selecting Enable UART1 hardware flow control and CTS/RTS case for bf548 ezkit board, boot up the kernel, run the case, what is input can be seen on screen at once instead of being held for 5 minutes:

 

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

   Image Name:   Linux-2.6.28.5-ADI-2009R1-pre-sv

   Created:      2009-02-17   6:46:02 UTC

   Image Type:   Blackfin Linux Kernel Image (gzip compressed)

   Data Size:    5249459 Bytes =  5 MB

   Load Address: 00001000

   Entry Point:  0029160c

   Verifying Checksum ... OK

   Uncompressing Kernel Image ... OK

Starting Kernel at = 0029160c

Linux version 2.6.28.5-ADI-2009R1-pre-svn6104 (test@my-local-machine) (gcc version 4.1.2 (ADI svn)) #15 Tue Feb 17 14:45:48 CST 2009

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00001000-0x001b9ab0

  rodata    = 0x001b9ab0-0x0024b838

  bss       = 0x0024b840-0x0026122c

  data      = 0x0026122c-0x0027c000

    stack   = 0x0027a000-0x0027c000

  init      = 0x0027c000-0x009ec000

  available = 0x009ec000-0x03dff000

  DMA Zone  = 0x03e00000-0x04000000

Hardware Trace Active and Enabled

Boot Mode: 3

Reset caused by Software reset

Blackfin support (C) 2004-2009 Analog Devices, Inc.

Compiled for ADSP-BF548 Rev 0.0

Blackfin Linux support by   blackfin.uclinux.org/

Processor Speed: 525 MHz core clock and 131 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

Data Cache Enabled for CPU0 (write-back)

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 15747

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart1,57600 console=tty0 console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174f

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

Console: colour dummy device 80x25

console [tty0] enabled

Linux version 2.6.28.5-ADI-2009R1-pre-svn6104 (test@my-local-machine) (gcc version 4.1.2 (ADI svn)) #15 Tue Feb 17 14:45:48 CST 2009

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00001000-0x001b9ab0

  rodata    = 0x001b9ab0-0x0024b838

  bss       = 0x0024b840-0x0026122c

  data      = 0x0026122c-0x0027c000

    stack   = 0x0027a000-0x0027c000

  init      = 0x0027c000-0x009ec000

  available = 0x009ec000-0x03dff000

  DMA Zone  = 0x03e00000-0x04000000

Hardware Trace Active and Enabled

Boot Mode: 3

Reset caused by Software reset

Blackfin support (C) 2004-2009 Analog Devices, Inc.

Compiled for ADSP-BF548 Rev 0.0

Blackfin Linux support by   blackfin.uclinux.org/

Processor Speed: 525 MHz core clock and 131 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

Data Cache Enabled for CPU0 (write-back)

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 15747

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart1,57600 console=tty0 console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174f

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

Console: colour dummy device 80x25

console [tty0] enabled

console handover: boot [early_BFuart0] -> real [ttyBF0]

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

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

Memory available: 52740k/65536k RAM, (7616k init code, 1762k kernel code, 778k data, 2048k dma, 588k reserved)

Calibrating delay loop... 1046.52 BogoMIPS (lpj=2093056)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (15 KB free)

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

Blackfin L1 Instruction SRAM: 48 KB (42 KB free)

Blackfin L2 SRAM: 128 KB (128 KB free)

PDA for CPU0 reserved at 0024d0f8

net_namespace: 288 bytes

NET: Registered protocol family 16

Blackfin GPIO Controller

Blackfin DMA Controller

ezkit_init(): registering device resources

SCSI subsystem initialized

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

musb_hdrc: version 6.0, musb-dma, host, debug=0

musb_hdrc: USB Host mode controller at ffc03c00 using DMA, IRQ 82

musb_hdrc musb_hdrc.0: MUSB HDRC host driver

musb_hdrc musb_hdrc.0: new USB bus registered, assigned bus number 1

usb usb1: configuration #1 chosen from 1 choice

hub 1-0:1.0: USB hub found

dma_alloc_init: dma_page @ 0x03d10000 - 512 pages at 0x03e00000

hub 1-0:1.0: 1 port detected

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

NET: Registered protocol family 1

msgmni has been set to 103

io scheduler noop registered

io scheduler anticipatory registered (default)

io scheduler cfq registered

bf54x-lq043: FrameBuffer initializing...

Console: switching to colour frame buffer device 80x24

bfin-otp: initialized

Serial: Blackfin serial driver

bfin-uart.1: ttyBF0 at MMIO 0xffc02000 (irq = 48) is a BFIN-UART

brd: module loaded

smsc911x: Driver version 2007-07-13.

eth0: SMSC911x MAC Address: 3e:cf:67:d8:4f:73

Driver 'sd' needs updating - please use bus_type methods

Driver 'sr' needs updating - please use bus_type methods

register bfin atapi driver

scsi0 : pata-bf54x

ata1: PATA max UDMA/66 irq 68

ata1.00: ATA-6: TOSHIBA MK4032GAX, AD101A, max UDMA/100

ata1.00: 78140160 sectors, multi 16: LBA48

ata1.00: configured for UDMA/66

blk_queue_max_hw_segments: set to minimum 1

scsi 0:0:0:0: Direct-Access     ATA      TOSHIBA MK4032GA AD10 PQ: 0 ANSI: 5

sd 0:0:0:0: [sda] 78140160 512-byte hardware sectors: (40.0 GB/37.2 GiB)

sd 0:0:0:0: [sda] Write Protect is off

sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

sd 0:0:0:0: [sda] 78140160 512-byte hardware sectors: (40.0 GB/37.2 GiB)

sd 0:0:0:0: [sda] Write Protect is off

sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

sda: sda1 sda2

sd 0:0:0:0: [sda] Attached SCSI disk

physmap platform flash device: 02000000 at 20000000

physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Using buffer write method

Using auto-unlock on power-up/resume

cfi_cmdset_0001: Erase suspend on write enabled

RedBoot partition parsing not available

Using physmap partition information

Creating 3 MTD partitions on "physmap-flash.0":

0x00000000-0x00040000 : "bootloader(nor)"

0x00040000-0x00440000 : "linux kernel(nor)"

0x00440000-0x02000000 : "file system(nor)"

BF5xx on-chip NAND FLash Controller Driver, Version 1.2 (c) 2007 Analog Devices, Inc.

bf5xx-nand bf5xx-nand.0: page_size=256, data_width=8, wr_dly=3, rd_dly=3

NAND device: Manufacturer ID: 0x20, Chip ID: 0xda (ST Micro NAND 256MiB 3,3V 8-bit)

Creating 2 MTD partitions on "NAND 256MiB 3,3V 8-bit":

0x00000000-0x00400000 : "linux kernel(nand)"

0x00400000-0x10000000 : "file system(nand)"

m25p80 spi0.1: m25p16 (2048 Kbytes)

Creating 2 MTD partitions on "m25p80":

0x00000000-0x00040000 : "bootloader(spi)"

0x00040000-0x00200000 : "linux kernel(spi)"

bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@4

bfin-spi bfin-spi.1: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc02300, dma channel@5

input: bf54x-keys as /devices/platform/bf54x-keys/input/input0

bf54x-keys: Blackfin BF54x Keypad registered IRQ 76

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

i2c /dev entries driver

i2c-bfin-twi i2c-bfin-twi.0: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc00700

i2c-bfin-twi i2c-bfin-twi.1: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc02200

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

hid_zpff: Unknown symbol _input_ff_create_memless

usbcore: registered new interface driver usbhid

usbhid: v2.6:USB HID core driver

Advanced Linux Sound Architecture Driver Version 1.0.18rc3.

ASoC version 0.13.2

dma rx:0 tx:1, err irq:10, regs:ffc00800

AD1980 SoC Audio Codec

asoc: AC97 <-> bf5xx-ac97 mapping ok

ALSA device list:

  #0: bf5xx-board (AD1980)

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 2003-02-26 16:10:12 UTC (1046275812)

eth0: SMSC911x/921x identified at 0x24000000, IRQ: 175

eth0: link down

IP-Config: Complete:

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

     host=bf548-ezkit, domain=, nis-domain=(none),

     bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

Freeing unused kernel memory: 7616k freed

eth0: link up, 100Mbps, full-duplex, lpa 0x45E1

                           _____________________________________

        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|            -   blackfin.uclinux.org/

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

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

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

 

Have a lot of fun...

 

 

BusyBox v1.13.2 (2009-02-17 12:33:15 CST) built-in shell (msh)

Enter 'help' for a list of built-in commands.

 

root:/> cd bin/

root:/bin> ./rtscts_test ttyBF0 -t

Disable RTS on /dev/ttyBF0 for 5 seconds.

If you hit any keys, you won't see them.

sdfsdfsdfgs

RTS is enabled again.

You should see the keys you hit just now.

root:/bin> sdfsdfsdfgs

sdfsdfsdfgs: not found

 

Follow-ups

 

--- Sonic Zhang                                              2009-03-02 04:36:32

The CTS RTS PIN connection on BF548 UART port is defined as a modem device not

as a host device. In order to test it under Linux, please nake a cross UART

cable to exchange CTS and RTS signal.

 

 

--- Sonic Zhang                                              2009-03-02 05:21:11

Fixed.

 

--- Sonic Zhang                                              2009-03-02 05:24:06

Fixed.

 

--- Sonic Zhang                                              2009-03-02 21:05:26

A bit correction.

 

The CTS RTS PIN connection on BF548 UART port is defined as a host machine. If

you test it in Linux with the other PC host, you connect 2 hosts together.

Please make a cross UART cable to exchange CTS and RTS signal.

 

--- Mingquan Pan                                             2009-07-02 05:37:45

This case can test ok now. Close.

 

--- Sonic Zhang                                              2009-07-02 05:55:12

More correction.

 

It is actually not a cross UART cable but 2 jump cables between SW7.1~6 and

SW7.3~8 on bf548-ezkit board.

 

 

 

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