AM3x Sitara ARM Processors Forum - Recent Threads

Sync Kernel debug. Pre- init_machine() code -- how? (AM335x Linux psp)

sviss — Fri, 24 May 2013 16:02:02 GMT

Hi hardware guys.

How do you debug the kernel code executed before the machine is initialized : before init_machine() is called?

The case:

I see on my board that one of the GPIO's state change. (this is GPIO0_6, to be specific).

To my understanding, this is strange : I expect all the periferal devices' state is preserved from the U-boot set values.

I added a LED blinking code, to the init_machine() /alias of am335x_evm_init() from the SK support code/ , and using oscilloscope found that GPIO state changes some ~40 milliseconds *BEFORE* the init_machine() is entered.

I want to find out why is it happening but no LED blinking (GPIO conrol) code works there, in the code above init_machine() /maybe pinmuxing is destroyed?/, nor a printk() helps because it is asynchronous: printout goes to the memory, not to the UART, and therefore I cannot trace that 40ms interval. Not even a mdelay()/udelay() methods seem to be functional in certain places of the kernel init code.

So, please kindly share your ideas/knowledge on how to get a bit of information, synchronously (anything better than memory printing with the printk), for hardware debug, from the code executed in the main.c at kernel_init() and around, before the board is initialized, and after the decompress_kernel() / kernel start.

Thanks.

discrepancy between Starter Kit schematics and Starter Kit JTAG connector installation guide

Oded Gabbay — Tue, 21 May 2013 07:38:57 GMT

Hi,

There is a discrepancy between the instructions that appear on http://processors.wiki.ti.com/index.php/Starter_kit_jtag and between the schematics of the Starter Kit, as they appear on http://processors.wiki.ti.com/index.php/AM335x_StarterKit_Board_Design_Files

E.g. Step 2 in the jtag page states: "Solder the connector to J12". However, there is no J12 connector in the schematics

Another example is step 3 which states: "Remove resistors R75,....". However, there is no resistor R75 in the schematics

Could you please correct the guide, or the schematics, because we are now designing a board and would like to check if our debugger works with the starter kit.

Thanks

Oded

AM335x USB

Jonathan Asher — Thu, 23 May 2013 15:10:26 GMT

Section 16.3.2 of the TRM (Rev H) states that the required pull-up/pull-down resistors cannot exist external to the device.

We are trying to replace an older ARM920T SOC processor that has gone EOL with the AM3352. It appears we will be able to emulate all functionallity of the old part with the AM3352 except for the USB. The older part USB interface was OHCI 1.0 and the design has the pull-up/pull-down resistors integrated into EMI/RFI filters on a seperate motherboard(s) on which the processor card attaches. One port supports FS/LS downstream and the other is FS upstream. Upstream enumeration control is handled by GPIO.

HS operation is not required.

Would it be possible to over-ride the USB 2.0 UTMI interface to the PHY by using UTMI_INTERFACE_CTRL_2 register bits 16-13 to disable the pull-up/pull-down resistors at the PHY and still have the interfaces operational?

AM3359 ethernet phy strange behavior / not working

Nick Wernicke — Sat, 18 May 2013 04:24:34 GMT

I have an am3359, and I cannot get the ethernet to work. The phy chip is a Lan8710, just like on the beaglebone, which is the schematic I copied. Every few reboots, the mdio address switches between 0:04 and 0:06. The physical jumper configuration for the chip is address 0:06.

When the 'scanned' mdio address matches the physical jumper settings, I can enumerate the phy as an ethernet port.

~ dmesg | grep phy
[    4.021636] davinci_mdio davinci_mdio.0: detected phy mask ffffffbe
[    4.032623] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
[    4.040863] davinci_mdio davinci_mdio.0: phy[6]: device 0:06, driver SMSC LAN8710/LAN8720
[    4.301452] net eth0: CPSW phy found : id is : 0x7c0f1
~ ifup eth1
[   20.129333] net eth1: CPSW phy found : id is : 0x7c0f1
~ ping [   23.126098] PHY: 0:06 - Link is Up - 100/Full

Then I can use ethtool

~ ethtool eth1
Settings for eth1:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 6
        Transceiver: external
        Auto-negotiation: on
        Current message level: 0x00000000 (0)

Link detected: yes

So, it looks like it is going to work, but then I try to USE the interface, and:

~ ifconfig eth1
eth1      Link encap:Ethernet HWaddr 00:18:31:E0:CD:D1
          inet addr:192.168.1.105 Bcast:192.168.1.255 Mask:255.255.255.0
          UP BROADCAST RUNNING ALLMULTI MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

~ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes

--- 192.168.1.1 ping statistics ---
7 packets transmitted, 0 packets received, 100% packet loss

There does not seem to be any traffic through it. The network lights are on on my switch and my board, so they LAN8710 is talking to the switch, there just doesn't seem to be any communication between the AM3359 and the LAN8710. I checked the clock, it is 50Mhz, 1.5Vpp, sourced TO the AM3359 AND the LAN8710 from a clock chip. I don't know what else to test, or what else to try. Does anyone have any ideas?

am335x - VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0)

daniel formolo — Fri, 24 May 2013 14:11:18 GMT

Hi, I build a ubi filesystem with the follow commands:

mkfs.ubifs -q -r base-rootfs-am335x-evm -m 2048 -e 131072 -c 1988 -o ubifs.img
ubinize -o ubi.img -m 2048 -p 128KuB -s 512

attached is the ubinize.cfg, environment vars.

uEnv.txt:

serverip=192.168.1.164
netmask=255.255.255.0
ipaddr=192.168.1.188
mmc rescan
root=ubi0:rootfs rw ubi.mtd=7,2048
bootargs=root=/dev/mtdblock7 rw initrd=0x81280000,64M
ramboot=mmc 0 0x81280000 uImage.bin; mmc 0 0x81780000 ubi.img; bootm 0x81280000

The vars seems ok, could someone help me:

nandargs=run bootargs_defaults;setenv bootargs ${bootargs} root=${nandroot} noinitrd rootfstype=${nandrootfstype} ip=${ip_method}
nandboot=echo Booting from nand ...; run nandargs; nand read.i ${kloadaddr} ${nandsrcaddr} ${nandimgsize}; bootm ${kloadaddr}
nandimgsize=0x500000
nandroot=ubi0:rootfs rw ubi.mtd=7,2048
nandrootfstype=ubifs rootwait=1
nandsrcaddr=0x280000

thanks in advanced.(Please visit the site to view this file)(Please visit the site to view this file)

Touch panel response time using LINUXEZSDK-AM335X

Ralf Bartzke — Thu, 23 May 2013 14:51:12 GMT

Hello,
I have just the usability of QT QSider and QDial controls on the development board AM335x (Linux version v05.07) tested. These seem to be very bad if a human finger is used. The position of the pointer then seems to be only updated every 3-10 seconds. Also an approximate adjustment of the controls is hardly possible.

With the included stylus or other small objects, it does work well. In the example programs from TI, there are probably generally similar problems. Can I do something about it? It calls for a precise manual control of such elements, because these are to control an air conditioner, but without a pen.

McASP underflow error handling

Balazs Ancsa — Fri, 24 May 2013 12:48:38 GMT

Hi!

I'm using AM3359 with StarterWare library and managed to use McASP with DMA across Audio FIFO.

My question is what is the correct way to handle data underflow error? The reference manual says reset McASP but does not mention how to do that.

Is it enough to reset the TX side or the RX part must be reset too?
How can this reset be achieved? With the Global Control Register? I have tried that, wrote 0 to that register, re-initialize the McASP periphery but that does not help.
Should I use the Power, Reset and Clock Management (PRCM) module?

My goal is to recognize the underflow error and handle it without bother the receive side.
Is this possible?

Best Regards,
Balazs Ancsa

am335x 24bit LCD configuration

ebin jose — Sat, 11 May 2013 09:59:41 GMT

Hi all,

I am trying to configure 24bit lcd with am335x custom board.

I gave the pinmux configuration for the 24 lcd data lines in board file as

/* Module pin mux for LCDC */
static struct pinmux_config lcdc_pin_mux[] = {
   {"lcd_data0.lcd_data0",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data1.lcd_data1",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data2.lcd_data2",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data3.lcd_data3",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data4.lcd_data4",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data5.lcd_data5",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data6.lcd_data6",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data7.lcd_data7",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data8.lcd_data8",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data9.lcd_data9",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data10.lcd_data10",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data11.lcd_data11",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data12.lcd_data12",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data13.lcd_data13",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data14.lcd_data14",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data15.lcd_data15",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
// new signals
   {"gpmc_ad8.lcd_data23",       OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad9.lcd_data22",       OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad10.lcd_data21",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad11.lcd_data20",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad12.lcd_data19",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad13.lcd_data18",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad14.lcd_data17",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
   {"gpmc_ad15.lcd_data16",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
//
   {"lcd_vsync.lcd_vsync",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"lcd_hsync.lcd_hsync",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"lcd_pclk.lcd_pclk",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"lcd_ac_bias_en.lcd_ac_bias_en", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {NULL, 0},
};

After the board boots up, we are getting correct voltage signals on lcd_data 0 to 15 pins but nothing on the lcd_data 16 to 23.

How can i enable the lcd_data 16 to 23 pins?

Regards,

Ebin

Clock Tree Tool

Pruf — Mon, 11 Mar 2013 08:23:16 GMT

Hi,

I have tried to use the Clock Tree Tool to visualize all the clock domains.
When I try to configure the Peripheral PLL (DPLL_PER in the tool) I do not get the 192MHz out of the PLL with the values we use in our design:

N=23
M=960
M2=5

This should result in:
CLKDCOLDO=960MHz
CLKOUT M2=192MHz

Because the AM3359 GEL File also uses this parameters I think there is a problem in the tool.
Do I miss a parameter in the tool?

Thanks.
Best regards,
Patrick

AM3352 custom board port with TMDssk3358 as template

Peter T-Innova — Fri, 24 May 2013 11:21:22 GMT

Hi.

With new custom hardware in my hand built on AM3352 ZCZ (G1), TPS65910A3A1, DDR3 MT41K128M16JT, NAND MT29F2G08ABAEA, I am looking for the best way to get the u-boot and linux kernel to be ported.

I have downloaded and installed the Sitara Linux SDK (AM335x EVM SDK, ti-sdk-am335x-evm-05.07.00.00-Linux-x86-Install) from http://software-dl.ti.com/dsps/dsps_public_sw/am_bu/sdk/AM335xSDK/latest/index_FDS.html.

I have somewhat read stuff like

https://docs.google.com/file/d/0BzESOSf028mLTjlPYmVJTUlTODA/edit?pli=1

http://processors.wiki.ti.com/index.php/Sitara_Linux_Training:_uboot_linux_debug_with_ccsv5

http://processors.wiki.ti.com/index.php/Sitara_Linux_Training:_UBoot_Board_Port

but this task, which actually should not be that complicated, tends to consume a lot of time.

One question: Looking at the stuff (one package please see above, have not yet downloaded the CCS) I have downloaded and installed on my Ubuntu 10.04 LTS, do I need some more source/.h-files/config-files which are shipped with the TMDSSK3358 (and which I am currently not the possessor of) ? I am mainly thinking of getting as much of pre-made stuff regarding the TPS65910 and the DDR3, which my board has in common with the SK.

If so, which arc should I use?

If not, where can I find more to download/install?

Thanks

CM3 Firmware to substitute SRAM assembly for PowerManagement

Martino Facchin — Fri, 24 May 2013 10:32:34 GMT

Hi everyone,

pulling arago cm3 git repository I discovered the existence of the next2 branch.

It contains a very useful feature like DDR powerdown which was extremely complicated to control via sleep33xx.S

Considering that the board I'm working on uses LPDDR1 as RAM I can't try the feature "out of the box" so I started hacking both kernel and m3 firmware to obtain the same result as before but incredibly more mantainable.

At the moment I removed anything from sleep33xx.S except wfi instruction and handled the extra parameter passage to CM3 in pm33xx.c but the board doesn't wake up.

Reading commits it appears that exist some kernel build with all the new infrastructure working, not yet publicly released.

Is it possible to obtain a preview of such patches to start hacking on?

Thank you so much

Martino

DM8127 can't set DDR3 frequency to 533Mhz

yao zhang71010 — Fri, 24 May 2013 10:00:01 GMT

Hi,

I was lost in setting the frequency up to 533Mhz of DDR3. And the same U-boot.min.bin can run ok in Appro camera. also, the 400Mhz DDR3 can run ok on my camera.the device mechanical package designator of appro camera is CYEx3,but mine is CYEx2. the DDR is the same. is there something different from CYEx2 and CYEx3 except the things in datasheet?

Thx!

AM335x GPMC IRQ status Monitored by Software Polling

Daisuke Maeda — Mon, 13 May 2013 10:32:36 GMT

When each Enabled bit in the GPMC_IRQENABLE register is 0 (interrupt is masked), can each Status bit in the GPMC_IRQSTATUS register be monitored by Software Polling?

Best regards,

Daisuke

AM335x Production Programming

Jmax604 — Thu, 07 Mar 2013 23:35:18 GMT

This seems to be a common question but I have not been able to find a complete answer.

What is the preferred method for flash programming in a production environment?

The wiki mentions a method, but says windows is not yet supported and there are a number of (Coming soon).

http://processors.wiki.ti.com/index.php/AM335x_Flash_Tool_User%27s_Guide

Any update or comments would be appreciated.

Thanks

EtherCAT Watchdog Behavior with ICE board

PeterN — Wed, 22 May 2013 18:05:54 GMT

Hi, am using EtherCAT 5.01 SSC app with ICE board and SDK 1.0.0.0.0.7, using TwinCAT as the master and enabling the watchdog in the Advanced tab of the TwinCAT EtherCAT properties page for the ICE device, I then halt the ICE ARM CPU while in OP mode expecting a notification of some kind on the TwinCAT message log, but TwinCAT gives no indication and Wireshark shows the WC counters are the same as during normal operation, so apparently the PRU ESC is still running and handling the packets even when the ARM CPU is halted. Question - is this expected behavior? And which watchdog do I need to enable to allow the EtherCAT master to detect that the EtherCAT AL app has crashed? I had thought that either the SM or PDI watchdog would catch this case, so either they are not truly enabled when the TwinCAT properties page is changed and reloaded, or something else is going on? Thanks

AM335x NAND Flash Tool or nandlib does not support BCH 16-bit ECC

Ulf Karlsson — Tue, 18 Sep 2012 14:08:06 GMT

I have a custom board with AM335x connected to a NAND flash that has page size of 4Kbyte and 224 bytes spare area.

Reading in the AM335x documentation regarding booting from NAND, the boot will use 16bit BCH ECC.

However, there is no support in either NAND Flash Tool or nandlib to turn on BCH 16bit. I am currently trying to add this, but are having trouble to set up everything correctly.

For example, the NAND Page Mapping documentation talks about eccsize1 and eccsize0 being nibbles, but the register GPMC_ECC_SIZE_CONFIG states bytes.

Also, the spare mapping expected by the NAND boot loader is hard to match with the described page mappings found under GPMC documentation (2 bytes + ECC sector 0 + ECC sector 1...ECC sector 8)

Have anyone succeeded in boot with NAND that has a large spare area using BCH 16-bit? Any example code from TI?

Or am I completely wrong in my assumptions?

Any help is appreciated!

Second ethernet port does not work (335x cpsw)

Micael Beronius — Thu, 10 Jan 2013 13:09:40 GMT

Hi,

I have done a hw design with two ethernet (mii) ports using one Micrel 8051MNL PHY for each port. The problem is that I cannot get the second port to work, and I don't understand why not.

I'm using ti-sdk-am335c-evm-05.06.00.00, where I have modified the board-am335xevm.c to my hardware.

The first port works as intended, both in dual mac mode and in switch mode. The phy of the second port works as it should (afaict); link up/down works, and the LED's indicate traffic on the line, but there's no communications coming out, or going into the ip-stack from that interface RX counter is 0. I.e. if I connect the second port to an empty switch, the LED's will not blink if I try to ping out. And if I connect it onto a busy network, RX packet counter remains at 0.

When in dual MAC mode, I can do ifconfig up on both interfaces, so the kernel thinks all is well. And like I said, Plugging/unplugging cable works fine on both interfaces.

I have double checked my hardware and board routing, and cannot see anything strange. Track lenght has been dealt with, and trace impedance as well.

My suspicion is that I have misunderstood something about the pin-mapping for this device. Or are there any general constraints using mii on both ports? I guess this is my main question.

static struct pinmux_config mii2_pin_mux[] = {
{"gpmc_wpn.mii2_rxerr", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a0.mii2_txen", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a1.mii2_rxdv", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a2.mii2_txd3", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a3.mii2_txd2", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a4.mii2_txd1", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a5.mii2_txd0", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a6.mii2_txclk", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a7.mii2_rxclk", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a8.mii2_rxd3", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a9.mii2_rxd2", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a10.mii2_rxd1", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a11.mii2_rxd0", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{NULL, 0},
};

static void mii2_init(int evm_id, int profile)
{
setup_pin_mux(mii2_pin_mux);
return;
}

static struct evm_dev_cfg mydev_cfg[] = {
{am335x_rtc_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{clkout2_enable, DEV_ON_BASEBOARD, PROFILE_NONE},
{tps65217_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{mydev_mmc1_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{mmc0_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{mii1_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{mii2_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{mydev_gpio_keys_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{gpio_led_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{usb0_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{usb1_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{i2c2_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{uart1_wl12xx_init, DEV_ON_BASEBOARD, PROFILE_NONE},
{NULL, 0, 0},
};

Related Kernel boot messages:

[ 0.976878] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 0.983385] davinci_mdio davinci_mdio.0: detected phy mask fffffff6
[ 0.991565] davinci_mdio.0: probed
[ 0.995152] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver Micrel KS8051
[ 1.003151] davinci_mdio davinci_mdio.0: phy[3]: device 0:03, driver Micrel KS8051

[ 1.379328] Detected MACID=0:18:30:fa:ec:af
[ 1.385005] cpsw: Detected MACID = 00:18:30:fa:ec:b0

I do see something in the kernel boot log that could be related, but I'm not sure;

[ 1.240397] mux: Failed to setup hwmod io irq -22

Sample ifconfig output:

# ifconfig
eth0 Link encap:Ethernet HWaddr 00:18:30:FA:EC:AF
inet addr:192.168.1.26 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:676 errors:0 dropped:118 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:80930 (79.0 KiB) TX bytes:512 (512.0 B)

eth1 Link encap:Ethernet HWaddr 00:18:30:FA:EC:B0
inet addr:10.0.0.124 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:81 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:4860 (4.7 KiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:85 errors:0 dropped:0 overruns:0 frame:0
TX packets:85 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9520 (9.2 KiB) TX bytes:9520 (9.2 KiB)

Thanks

Micael

kernel crash when reading ADC registers

Arturs Elksnis — Fri, 17 May 2013 14:35:34 GMT

Hi,

I'm getting a kernel crash with non-linefetch error in ti_tscadc.c:

[ 1.548095] Unhandled fault: external abort on non-linefetch (0x1028) at 0xf9e0d054

It happens every time I'm trying to do this:

tscadc_readl(ts_dev, TSCADC_REG_SE);

or this:

tscadc_readl(ts_dev, TSCADC_REG_FIFO1) & 0xFFF;

Basically if I'm trying to read ADC registers then I'm getting the error.

In this thread: http://e2e.ti.com/support/arm/sitara_arm/f/791/p/158103/928768.aspx#928768 it seems to suggest that I need to enabled ADC in PRCM module. Having read the relevant sections in SPRUH73G.pdf (the technical reference manual) I now know that it's probably the OCP clock that I haven't enabled.

Can anyone please suggest how to enable it? Where is the PRCM module and how to enable ADC in it?

Thanks.

AM3358 Suspend resume support

Yogavanan Mathivanan — Wed, 15 May 2013 05:58:23 GMT

Hi,

    I am using AM3358 EVM board able to boot with TI SDK 3.2 kerne and suspend/resume feature works fine.But we have ported the AM3358 machine to Custom kernel version 2.6.35 which is also booting and working fine.

Currently we tried to test the suspend/resume support in the custom kernel which is not resuming after suspend.We are able to suspend/resume through GPIO0 when TI emulator is connected to arm-cortex-A8 core.Without connecting the emulator target is not resuming from the suspend state.

We further debug by connecting M3_wakupss core through emulator.We observed below error.

1.After bootup,once we give suspend (echo mem > /sys/power/state) and we stopped the M3 core ,checked the register info list in CCS.Found there is a exception number in the register xPSR.Since R0,R1 registers shows the address 0x44E000E0 we suspects the there is issue with CM_PER_L3_CLKCTRL module.We added following lines to pm33xx.c at am33xx_pm_suspend function.

        gpio1_oh        = omap_hwmod_lookup("gpio1");   /* WKUP domain GPIO */
        tptc0_oh        = omap_hwmod_lookup("tptc0");
        tptc1_oh        = omap_hwmod_lookup("tptc1");
        tptc2_oh        = omap_hwmod_lookup("tptc2");
        cpsw_oh         = omap_hwmod_lookup("cpgmac0");
        lcdc_oh         = omap_hwmod_lookup("lcdc");
        tpcc_oh         = omap_hwmod_lookup("tpcc");
        mmc_oh          = omap_hwmod_lookup("mmc3");

        omap_hwmod_enable(usb_oh);
        omap_hwmod_enable(gpmc_oh);
        omap_hwmod_enable(gpio1_oh);

        omap_hwmod_enable(tptc0_oh);
        omap_hwmod_enable(tptc1_oh);
        omap_hwmod_enable(tptc2_oh);
        omap_hwmod_enable(cpsw_oh);
        omap_hwmod_enable(lcdc_oh);
        omap_hwmod_enable(tpcc_oh);
        omap_hwmod_enable(mmc_oh);

        omap_hwmod_idle(usb_oh);
        omap_hwmod_idle(gpmc_oh);

        omap_hwmod_idle(tptc0_oh);
        omap_hwmod_idle(tptc1_oh);
        omap_hwmod_idle(tptc2_oh);
        omap_hwmod_idle(cpsw_oh);
        omap_hwmod_idle(lcdc_oh);
        omap_hwmod_idle(tpcc_oh);
        omap_hwmod_idle(mmc_oh);

Please find the register details below.

Core Registers
   PC   0x00000CA6   Core Register: Program Counter
   SP   0x00080F60   Core Register: General Purpose Register 13 - Stack Pointer
   LR   0x00000CD3   Core Register: General Purpose Register 14 - Link Register
   xPSR   0x81000032   Core Register: Stores the status of interrupt enables and critical processor status signals
       N   1   Stores bit 31 of the result of the instruction. In other words stores the sign of the number
       Z   0   Is set to 1 if the result of the operation is zero else stays 0
       C   0   Stores the value of the carry bit if it occurred in an addition or the borrow bit in a subtraction. In a shift stores the last bit shifted out.
       V   0   Set to 1 if an overflow occurred
       Q   0   Indicates whether an overflow/saturation occurred in the enhanced DSP instructions
       ICI_IT_2   00   ICI/IT - bit26-bit25
       T   1   Thumb State
       RESV   00000000   Reserved
       ICI_IT_1   000000   ICI/IT - bit15-bit10
       RESV2   0   Reserved
       EXCEPTION   000110010   Exception Number
   R0   0x44E000E0   Core Register: General Purpose Register 0
   R1   0x44E000E0   Core Register: General Purpose Register 1
   R2   0x00000000   Core Register: General Purpose Register 2
   R3   0x00010000   Core Register: General Purpose Register 3
   R4   0x00000000   Core Register: General Purpose Register 4
   R5   0x00000000   Core Register: General Purpose Register 5
   R6   0x00000000   Core Register: General Purpose Register 6
   R7   0x00080F60   Core Register: General Purpose Register 7
   R8   0x00000000   Core Register: General Purpose Register 8
   R9   0x00000000   Core Register: General Purpose Register 9
   R10   0x00000000   Core Register: General Purpose Register 10
   R11   0x00000000   Core Register: General Purpose Register 11
   R12   0x00000000   Core Register: General Purpose Register 12
   R13   0x00080F60   Core Register: General Purpose Register 13
   R14   0x00000CD3   Core Register: General Purpose Register 14
   MSP   0x00080F60   Core Register: MSP Register
   PSP   0x00000000   Core Register: PSP Register
   DSP   0x00000000   Core Register: DSP Register
   CTRL_FAULT_BASE_PRI   0x00000000   Core Register: CM3 Special Registers

Please let us know how to debug M3 core further?Can you share the source code of M3_Wkup firmware?
Are we missing any clock/power initialisation in linux kernel running at A8 core?

Regards

Yogavanan

AM335x :how to wake up form Capacitive Touch Screen INT

zhans zhans — Fri, 24 May 2013 08:14:10 GMT

hi,

I use TI-Android-JB-4.1.2-DevKit-4.0.1 in my project with capacitive, The touch controller is FT5X06,now the capacitive work fine.

we connect LCD_CAP_TOUCH_WAKE to gpio0_15

now I have one promble :how to wake up when am335x enter standy mode with LCD_CAP_TOUCH_WAKE?

I check the wiki:http://processors.wiki.ti.com/index.php/AM335x_Power_Management_Standby_User%27s_Guide,but I can't find standby_gpio_pad_conf in /debugfs/omap_mux/board/

pls help me!

Booting Speed optimizaation?

Devin Park — Fri, 24 May 2013 07:28:01 GMT

Hi,

I'm developing AM3352 and below is the booting log. Currenlty it takes 20sec from kernel loading to FS loading.

Especially, red color part takes much time. Could you please suggest any idea for reducing the booting time?

Thanks and BR,

Devin

----------------------

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.000000] Linux version 3.2.0 (devin@devin-laptop) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #8 Thu May 9 13:33:13 KST 2013
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine: am335xevm
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] AM335X ES1.0 (neon )
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
[    0.000000] Kernel command line: console=ttyO0,115200n8 root=ubi0:rootfs rw ubi.mtd=7,2048 rootfstype=ubifs rootwait=1
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Memory: 64MB = 64MB total
[    0.000000] Memory: 58348k/58348k available, 7188k reserved, 0K highmem
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xc4800000 - 0xff000000   ( 936 MB)
[    0.000000]     lowmem : 0xc0000000 - 0xc4000000   ( 64 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   ( 16 MB)
[    0.000000]       .text : 0xc0008000 - 0xc059b000   (5708 kB)
[    0.000000]       .init : 0xc059b000 - 0xc05d9000   ( 248 kB)
[    0.000000]       .data : 0xc05da000 - 0xc0640718   ( 410 kB)
[    0.000000]        .bss : 0xc064073c - 0xc066d4e4   ( 180 kB)
[    0.000000] NR_IRQS:396
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[    0.000000] Total of 128 interrupts on 1 active controller
[    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
[    0.000000] omap_dm_timer_switch_src: Switching to HW default clocksource(sys_clkin_ck) for timer1, this may impact timekeeping in low power state
[    0.000000] OMAP clocksource: GPTIMER1 at 24000000 Hz
[    0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
[    0.000000] Console: colour dummy device 80x30
[    0.000223] Calibrating delay loop... 548.86 BogoMIPS (lpj=2744320)
[    0.046591] pid_max: default: 32768 minimum: 301
[    0.046732] Security Framework initialized
[    0.046852] Mount-cache hash table entries: 512
[    0.047288] CPU: Testing write buffer coherency: ok
[    0.068338] omap_hwmod: gfx: failed to hardreset
[    0.085056] omap_hwmod: pruss: failed to hardreset
[    0.086349] print_constraints: dummy:
[    0.086814] NET: Registered protocol family 16
[    0.089444] OMAP GPIO hardware version 0.1
[    0.095300] omap_mux_init: Add partition: #1: core, flags: 0
[    0.095818] omap_hsmmc.0: alias fck already exists
[    0.096187] [brandon] wl12xx_init() evm_id = 0
[    0.097799] omap2_mcspi.1: alias fck already exists
[    0.098072] omap2_mcspi.2: alias fck already exists
[    0.098964] edma.0: alias fck already exists
[    0.098992] edma.0: alias fck already exists
[    0.099017] edma.0: alias fck already exists
[    0.132991] bio: create slab <bio-0> at 0
[    0.135749] SCSI subsystem initialized
[    0.137810] usbcore: registered new interface driver usbfs
[    0.138190] usbcore: registered new interface driver hub
[    0.138435] usbcore: registered new device driver usb
[    0.140716] Advanced Linux Sound Architecture Driver Version 1.0.24.
[    0.142073] Switching to clocksource gp timer
[    0.161717] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[    0.162234] NET: Registered protocol family 2
[    0.162475] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.162824] TCP established hash table entries: 2048 (order: 2, 16384 bytes)
[    0.162891] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
[    0.162936] TCP: Hash tables configured (established 2048 bind 2048)
[    0.162951] TCP reno registered
[    0.162967] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.162999] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.163218] NET: Registered protocol family 1
[    0.163539] RPC: Registered named UNIX socket transport module.
[    0.163556] RPC: Registered udp transport module.
[    0.163568] RPC: Registered tcp transport module.
[    0.163580] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.163878] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.164115] omap-gpmc omap-gpmc: GPMC revision 6.0
[    0.164138] Registering NAND on CS0
[    0.170483] VFS: Disk quotas dquot_6.5.2
[    0.170563] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.171233] msgmni has been set to 113
[    0.175142] alg: No test for stdrng (krng)
[    0.175942] io scheduler noop registered
[    0.175961] io scheduler deadline registered
[    0.176053] io scheduler cfq registered (default)
[    0.178280] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[    0.644515] console [ttyO0] enabled
[    0.648904] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[    0.656948] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[    0.664953] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[    0.672942] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[    0.680873] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[    0.700616] brd: module loaded
[    0.709989] loop: module loaded
[    0.713562] i2c-core: driver [tsl2550] using legacy suspend method
[    0.720080] i2c-core: driver [tsl2550] using legacy resume method
[    0.728470] mtdoops: mtd device (mtddev=name/number) must be supplied
[    0.735953] omap2-nand driver initializing
[    0.740616] ONFI flash detected
[    0.744092] ONFI param page 0 valid
[    0.747782] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xa1 (Micron MT29F1G08ABBEAH4)
[    0.756505] Creating 8 MTD partitions on "omap2-nand.0":
[    0.762146] 0x000000000000-0x000000020000 : "SPL"
[    0.768899] 0x000000020000-0x000000040000 : "SPL.backup1"
[    0.776274] 0x000000040000-0x000000060000 : "SPL.backup2"
[    0.783514] 0x000000060000-0x000000080000 : "SPL.backup3"
[    0.790745] 0x000000080000-0x000000260000 : "U-Boot"
[    0.798340] 0x000000260000-0x000000280000 : "U-Boot Env"
[    0.805539] 0x000000280000-0x000000780000 : "Kernel"
[    0.814426] 0x000000780000-0x000008000000 : "File System"
[    0.872196] OneNAND driver initializing
[    0.877068] UBI: attaching mtd7 to ubi0
[    0.881121] UBI: physical eraseblock size:   131072 bytes (128 KiB)
[    0.887761] UBI: logical eraseblock size:    126976 bytes
[    0.893464] UBI: smallest flash I/O unit:    2048
[    0.898420] UBI: sub-page size:              512
[    0.903297] UBI: VID header offset:          2048 (aligned 2048)
[    0.909627] UBI: data offset:                4096
[    1.946758] UBI: max. sequence number:       221
[    1.966265] UBI: attached mtd7 to ubi0
[    1.970225] UBI: MTD device name:            "File System"
[    1.976060] UBI: MTD device size:            120 MiB
[    1.981293] UBI: number of good PEBs:        964
[    1.986170] UBI: number of bad PEBs:         0
[    1.990851] UBI: number of corrupted PEBs:   0
[    1.995544] UBI: max. allowed volumes:       128
[    2.000409] UBI: wear-leveling threshold:    4096
[    2.005379] UBI: number of internal volumes: 1
[    2.010060] UBI: number of user volumes:     1
[    2.014751] UBI: available PEBs:             0
[    2.019431] UBI: total number of reserved PEBs: 964
[    2.024578] UBI: number of PEBs reserved for bad PEB handling: 9
[    2.030906] UBI: max/mean erase counter: 2/0
[    2.035414] UBI: image sequence number: 2134583740
[    2.040679] UBI: background thread "ubi_bgt0d" started, PID 547
[    2.047732] CAN device driver interface
[    2.051776] CAN bus driver for Bosch D_CAN controller 1.0
[    2.102165] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[    2.108687] davinci_mdio davinci_mdio.0: detected phy mask fffffff6
[    2.116681] davinci_mdio.0: probed
[    2.120274] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver unknown
[    2.127737] davinci_mdio davinci_mdio.0: phy[3]: device 0:03, driver unknown
[    2.135592] usbcore: registered new interface driver zd1201
[    2.141696] usbcore: registered new interface driver cdc_ether
[    2.148065] usbcore: registered new interface driver cdc_eem
[    2.154237] usbcore: registered new interface driver dm9601
[    2.160162] cdc_ncm: 04-Aug-2011
[    2.163781] usbcore: registered new interface driver cdc_ncm
[    2.169749] Initializing USB Mass Storage driver...
[    2.175116] usbcore: registered new interface driver usb-storage
[    2.181447] USB Mass Storage support registered.
[    2.186901] mousedev: PS/2 mouse device common for all mice
[    2.194026] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    2.200949] i2c /dev entries driver
[    2.204852] Linux video capture interface: v2.00
[    2.210079] usbcore: registered new interface driver uvcvideo
[    2.216160] USB Video Class driver (1.1.1)
[    2.221434] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[    2.228094] _regulator_get: deviceless supply vdd_mpu not found, using dummy regulator
[    2.237002] cpuidle: using governor ladder
[    2.241930] cpuidle: using governor menu
[    2.388372] omap4_aes_mod_init: loading AM33X AES driver
[    2.394143] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
[    2.400811] omap4_aes_probe: probe() done
[    2.405308] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
[    2.411517] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
[    2.424593] omap4_sham_probe: probe() done
[    2.431799] usbcore: registered new interface driver usbhid
[    2.437721] usbhid: USB HID core driver
[    2.442530] usbcore: registered new interface driver snd-usb-audio
[    2.453440] mmc0: card claims to support voltages below the defined range. These will be ignored.
[    2.463544] ALSA device list:
[    2.466674]   No soundcards found.
[    2.470240] oprofile: hardware counters not available
[    2.475561] oprofile: using timer interrupt.
[    2.480068] nf_conntrack version 0.5.0 (911 buckets, 3644 max)
[    2.486729] ip_tables: (C) 2000-2006 Netfilter Core Team
[    2.492486] TCP cubic registered
[    2.495896] NET: Registered protocol family 17
[    2.500591] can: controller area network core (rev 20090105 abi 8)
[    2.507241] NET: Registered protocol family 29
[    2.511928] can: raw protocol (rev 20090105)
[    2.516445] can: broadcast manager protocol (rev 20090105 t)
[    2.522468] Registering the dns_resolver key type
[    2.527536] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[    2.535640] ThumbEE CPU extension supported.
[    2.540204] mux: Failed to setup hwmod io irq -22
[    2.545892] Power Management for AM33XX family
[    2.550808] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[    2.557564] Copied the M3 firmware to UMEM
[    2.562648] sr_init: platform driver register failed
[    2.571899] clock: disabling unused clocks to save power
[    2.589647] mmc0: queuing unknown CIS tuple 0x91 (3 bytes)
[    2.596603] mmc0: new high speed SDIO card at address 0001
[    2.609177] Detected MACID=bc:6a:29:fd:8:2a
[    2.614780] cpsw: Detected MACID = bc:6a:29:fd:08:2b
[    2.621273] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
[    2.696441] UBIFS: recovery needed
[    2.865007] UBIFS: recovery completed
[    2.868889] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
[    2.875247] UBIFS: file system size:   119230464 bytes (116436 KiB, 113 MiB, 939 LEBs)
[    2.883609] UBIFS: journal size:       9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)
[    2.891316] UBIFS: media format:       w4/r0 (latest is w4/r0)
[    2.897473] UBIFS: default compressor: lzo
[    2.901788] UBIFS: reserved for root: 0 bytes (0 KiB)
[    2.910440] VFS: Mounted root (ubifs filesystem) on device 0:12.
[    2.917285] Freeing init memory: 248K
INIT: version 2.86 booting
Please wait: booting...
Starting udev
Error opening /dev/fb0: No such device
[    4.848384] alignment: ignoring faults is unsafe on this CPU. Defaulting to fixup mode.
Root filesystem already rw, not remounting
Caching udev devnodes
ALSA: Restoring mixer settings...
Configuring network interfaces... /usr/sbin/alsactl: load_state:1625: No soundcards found...
[    5.645864] net eth0: CPSW phy found : id is : 0x1cc816
udhcpc (v1.13.2) started
Sending discover...
[    7.642873] PHY: 0:03 - Link is Up - 100/Full
Sending discover...
Sending select for 192.168.0.109...
Lease of 192.168.0.109 obtained, lease time 864000
adding dns 157.87.119.10
adding dns 134.183.48.37
done.
Setting up IP spoofing protection: rp_filter.
Fri

Jul 27 10:30:00 UTC 2012
INIT: Entering runlevel: 5
Starting system message bus: dbus.
Starting telnet daemon.
Starting syslogd/klogd: done
Starting thttpd.

_____                    _____           _         _
| _ |___ ___ ___ ___   | _ |___ ___ |_|___ ___| |_
|     | _| .'| . | . | |   __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
              |___|                    |___|

Arago Project http://arago-project.org am335x-evm ttyO0

Arago 2011.09 am335x-evm ttyO0

am335x-evm login:

EMU pins

Goran Jakovljevic — Thu, 15 Nov 2012 10:32:46 GMT

Hi all,

Is it necessary to connect EMU0 and EMU1 pins to JTAG for AM335x processors? These pins are multiplexed with GPIO and I need as much as possible GPIOs.

Thanks, Goran

opkg updation

Vivek Verma1 — Thu, 23 May 2013 11:53:40 GMT

Hi All,

I am using Calixto Am_355x Evaluation board and my kernel version is Linux am335x-evm 3.2.0-g7847f90.

I am unable to run opkg update.

Networking of the board is running fine and pinging to google.

How should I download and install packages.

Regards

PRU debugging on Linux - pView whereabouts?

Michael Haberler — Wed, 28 Nov 2012 12:37:07 GMT

Hi,

I'm developing a high-speed PRU stepper generator native on Linux.

I notice the PASM manual refers to a debugging tool called 'pView' - is that available?

A minimal debugging capability on-system (inspect/modify registers/memory, break, step etc) would be extremely valuable - the CCS tool is a bit heavy for basic debugging tasks, and I'm unsure if it is actually suited to debug a PRU application like demoed in https://github.com/beagleboard/am335x_pru_package

I notice that a seemingly half-finished PRU debugger is at https://github.com/wz2b/prude - anybody working on that?

thanks in advance

Michael

EXTINTn (nNMI external interrupt) of AM335x

Keldy — Thu, 08 Mar 2012 07:00:22 GMT

Hi,

How to use the EXTINT (external interrupt) pin of AM335x MPU ?

Any hardware configuration needed ? like Pull-up or pull-down ?

Any software configuration needed ? like configure some of the registers ?

Thanks & Regards

Keldy