LPCXpresso - LPCXpresso Forum

Post-build error

dhill — Wed, 16 May 2012 14:58:29 GMT

I am getting the following error.

Error: Cannot open checksum file 734N-WiFi.binmake[1]: [post-build] Error 1 (ignored)

Any idea what that is?

LPC11U14 - SPI example

bruno — Wed, 16 May 2012 14:37:15 GMT

I modified the SSP example of LPC11xx for LPC11U14.

#ifdef __JTAG_DISABLED
// LPC_IOCON->SCK_LOC = 0x00; //!< Offset: 0x0B0 SCK pin location select Register (R/W) ????

LPC_IOCON->SWCLK_PIO0_10 &= ~0x07;
LPC_IOCON->SWCLK_PIO0_10 |= 0x02; /* SSP CLK */

in this part of code there is registrer "SCK_LOC. This registrer there is not at code of LPC11Uxx.

How can modified this registrer???

Debug / Release mode problem

sachinbarkul — Wed, 16 May 2012 04:22:06 GMT

My code Run on Debug mode but when try on release Mode it not woking. There is no any error generated by compiller.

SDO Communication - Need Doc or clarification PLEASE HELP!

zanak — Tue, 15 May 2012 20:35:48 GMT

Hello.
I'm able to send and receive Objects using the sample code,
now I'm trying to read the OD using SDO.
I'm stuck ! can anyone tell me how to do that using the sample code (canopen_onchip) or point me to any documentation.
I tried to understand that on the user manual but with no success.
I need a start point please
Zack

Problems getting started with LPCXpresso

akaraivanov — Tue, 15 May 2012 17:48:32 GMT

Hi

I got a LPCXpresso with LPC1769 rev b target. I've installed the latest Code Red IDE (4.2.2) on Fedora 16 running on a physical machine. I can build examples for LPC1700 fine but when I try to debug any of them, IDE freezes. When I connect board to usb port, I can see a flashing led and lsusb says:

Bus 001 Device 004: ID 0471:df55 Philips (or NXP) LPCXpresso LPC-Link

Then when I start IDE, a select Debug for some of the demos, it builds, displays a dialog saying "Initializing LPC Link", dialog closes and on the status bar I can see "Launching adc_buzzer. Debug (57%)" and led on board stops flashing. IDE freezes at that point. lsusb now says:

Bus 001 Device 005: ID 1fc9:0009 NXP Semiconductors

The IDE has spawned the following proceeses (seen while it is hanging):

Code:

3130 pts/0    Sl+    0:12  |   \_  /usr/local/lpcxpresso_4.2.2_238/lpcxpresso/lpcxpresso  

3431 pts/0    S      0:00  |       \_ arm-none-eabi-gdb -q -nw -i mi  /home/adk/workspace/adc_buzzer/Debug/adc_buzzer.axf  

3443 ?        Ss     0:00  |           \_ crt_emu_cm3_nxp -g -mi -2  -pLPC1768 -vendor=NXP -wire=winUSB -msg-port=52073

When I kill the IDE and reconnect the board, led starts flashing again.

Any ideas?

Thanks
Alex.

__fp16 (Halfprecision floating point) problem

bap — Tue, 15 May 2012 16:28:06 GMT

I have the LPC1114 LPCXpresso board and LPCXpresso v4.2.2 [Build 275]. In my code I use the half precision floating point (__fp16). I have set the compiler flag -mfp16-format=ieee, but when linking I get the error: "undefined reference to `__aeabi_f2h'." I probably only need to set a linker flag, but I don't know which one and I haven't found the solution yet. So if anyone could point me in the right direction it would be much appreciated.

Cannot toggle PIO1_5 on lpc expresso

vineetrvce — Tue, 15 May 2012 11:01:08 GMT

Hello All,
I need to toggle the PIO1_5 (UART RTS) on lpc1114 but the pin is not going low at all. When I try to toggle another pin, it is going low and high with the same code.

Here is the code:

#define LED1 8
#define DIR_CONTROL_PIN 5

GPIOInit(); // enables the GPIO clock
GPIOSetDir( PORT1, LED1, OUTPUT_PIN );
GPIOSetDir( PORT1, DIR_CONTROL_PIN, OUTPUT_PIN );

with this source code, I am able to get LED1 go low but when i check th voltage on PIO1_5, it shows ~2.75V after executing the above lines.

How can I solve this issue.

NOTE: I am trying this on the LPC Expresso Board only and NOT any other board. So please go ahead and check if you guys face the same problem!!!!

Regards,
Vineet.

C_CAN onchip driver, mobe_id quick question

zanak — Tue, 15 May 2012 10:34:31 GMT

Hello world,
I'm new to CAN . and using the LPC11C24 I'm trying to understand the example code of the canopen_onchip , I want to understand what the mode_id does in this code, I can't find it in any documentation, can you please tell me what is the purpose of this variable on how it's related to the CAN registers- Thank you !

Zack

LPC11C24 can on-chip error handler

signumx — Mon, 14 May 2012 19:13:25 GMT

Hi,

I'm using the CAN on-chip api and everything is working fine when I start my system. I want to be able to detect and handle errors if, for instance, the communication cable to my module is cut. When I test that, I can see that the CAN_error callback function is called the first time (by inserting a breakpoint in that function). I plug my cable back, the communication restarts but if I remove it again, the CAN_error is never called again.

I thought of resetting the CANSTAT register but I'm apparently not allowed to do so. I also tried to call the initCan function inside the error handler but it does not help. How do I either reinitialize the error flags or the whole CAN controller?

Thank you,
Jeff

Set Value Flash

marcossmart — Mon, 14 May 2012 16:00:04 GMT

how to set a value in the flash (0x00008000-256) via the C code lpcxpresso?

Newbie Question - UART as a debug interface

a.unique.identifier — Mon, 14 May 2012 14:21:20 GMT

I would like to use the LPC1343 UART as an output channel for debuging purposes. I intended on using a standard FDTI TTL to USB serial interface, a single TXD line (!!!?), most probably the NXP UART code and teminal emulation program for Windows 7.

Any helpful hints - with respect to the processor / debugging / hardware inteface / terminal emulation - from people that have been down this path before? Is putty the best alternative to HyperTerminal, which is no longer included in Windows 7 (but theoretically can be gotten from an XP installation)?

Thanks in advance....

Newbie Question - GPIO pin allocation

a.unique.identifier — Mon, 14 May 2012 13:57:03 GMT

I've noticed many cases in which the libraries associated with an internal resource, such as the 32 bit timer, also set the appropriate GPIO pins accordingly (ex.: The NXP init_timer32 routine sets the pins for CAP0, MAT0, etc.). If I'm using the timer for a blocking delay or to cause an interrupt, I can use the CAP0, MAT0, etc. - or a subset of these pins - for other GPIO functions, correct? I tested this using these GPIO pins for something else and it seems to work fine. I wanted to make certain I wasn't missing some fine point.

This is a general question, but specifically I'm using the LPC1343.

Thanks!

GSM module configuration using LPC1769 processor

kplee — Mon, 14 May 2012 11:49:01 GMT

My project had extend further to build in security system with self telephone sending text system. From the advice of my supervisor, i am required to use GSM module to perform this function.

However, i finding no way for me to code LPC1769 processor in order to configure this GSM modules.

I really needs some help on this.

Debugging errors

Caradhras — Mon, 14 May 2012 09:07:45 GMT

In the last time, it happens that i get errors while entering or leaving debug mode.

Here is one, that i just encountered. Others concern flash write operations. Did i treat my mcu wrong? Is it possible, that i damaged it anyhow?

EDIT:
They seem to appear randomly, so sometimes it works just fine and smooth...(for example at the moment... :D)

Code:

Unable to parse register descriptor: not matched:Lg: Reply: +$OK

Unable to parse register descriptor: not matched:Lg: Reply: +$OK

  {r0}R0=0x0000ED10

  {r1}R1=0x00000001

  {r2}R2=0x00080000

  {r3}R3=0x0007FFFF

  {r4}R4=0x40048000

  {r5}R5=0xEFFFDCB1

  {r6}R6=0x00000005

  {r7}R7=0x10001FE0

  {r8}R8=0xD3C65B70

  {r9}R9=0x2458AE55

  {r10}R10=0xBC9D9344

  {r11}R11=0x32437290

  {r12}R12=0x10000284

  {sp}SP=0x10001FE0

  {lr}LR=0x0000051D

  {pc}PC=0x0000051C

  {cpsr}PSR=0x21000000

  !Flags=0x21000000:nzCvq

  !EPSR=0x21000000:none

  !IPSR=0x21000000:0  (Base)

  !PSP=0xFA94E2B0

  !CONTROL=0x0:Privileged/MSP (Now)

  [+IntMask]

  BasePri=0x00

  PriMask=disabled

  FaultMask=disabled

  []

  

  Lg: Reply: +$OK

EDIT2:
Ah and there goes the error:

Code:

15: Target error from Commit Flash write

  15: Target error from Commit Flash write

  Flash erase or write operation aborted.

What happens here?

Embedding a scripting engine ?

Leji — Mon, 14 May 2012 08:35:30 GMT

Hi,

I would like to embed some level of scripting functionality in my application to allow users some simple/fast customizations (for example, toggle a GPIO each time an I2C transaction is detected, or repeat a pattern of GPIOs toggling...)

I don't need a fully featured language, just something with IF, FOR and the ability to call native functions (for I2C, SPI etc...)

The only valid candidate I found until now is http://www.compuphase.com/pawn/pawn.htm
Did anyone use it on an LPC ?
Is anyone using something else ?

Thanks for any suggestions,

Thibaut