Level 'dip' in the ADC readings

Started by uohgren in LPC200010 years ago 7 replies

When I send out packets on the Ethernet port on the LPC2368 I can see a clear 'dip' in the continuos ADC readings at the time for the Ethernet...

When I send out packets on the Ethernet port on the LPC2368 I can see a clear 'dip' in the continuos ADC readings at the time for the Ethernet packet sending. Anyoue experienced this? I use the same decoupling vaules as the reference design, is this enough or should I add more? Should I stabilize the ADC power input? /Ulf ------------------------------------


TCPIP over ethernet on LPC2468

Started by ashu...@kanalsolutions.com in LPC20009 years ago 5 replies

Dear Chris and all the group members, i am working on TCP/IP over ethernet in one of my project. i am using LPC2468 (NXP ARM7) and the...

Dear Chris and all the group members, i am working on TCP/IP over ethernet in one of my project. i am using LPC2468 (NXP ARM7) and the compiler is C ARM. and the PHY DEVICE IS DP83848C. i need your valuable advice in this regard... i have initialised EMAC PHY i need to know how do i send data to the server over TCP/IP. what procedure i have to apply for this... Regards Tripa...


Simple ethernet frame

Started by Ivan Zuev in LPC20007 years ago 8 replies

Hello, colleagues! I would like to ask you helping me! I need write a simple program, which periodically sent Ethernet frames with 100 bytes...

Hello, colleagues! I would like to ask you helping me! I need write a simple program, which periodically sent Ethernet frames with 100 bytes information. Physical interface is KS8721BL. Chip is LPC2468. I've tried explore a sample from IAR 5.50, but it isn't work at all. It seems that KS8721BL can't be initialized. Now my JTAG go mad - doesn't work properly. I would be glad if you da...


Ethernet data using the LPC2103 or PC2106

Started by Tom Smith in LPC20007 years ago 3 replies

I found a neat little 2103 board with an ENC28J60ML Ethernet interface (picture attached). At a price of $26, I gave it a try. All the...

I found a neat little 2103 board with an ENC28J60ML Ethernet interface (picture attached). At a price of $26, I gave it a try. All the documentation is in Chinese. I have found several applications that uses this interface & some that use the 2103 & 2106. Most of them are for really lean Web servers. I downloaded the source of uIP1.0, a software package that can be adapted to small m...


Keil MCB2300 / LPC2378 ethernet flakiness

Started by Edwin Olson in LPC200011 years ago 2 replies

Hi folks, I have about 20 Keil MCB2300 boards with an LPC2378 on them. Of these, 15 seem to be running our application software with no...

Hi folks, I have about 20 Keil MCB2300 boards with an LPC2378 on them. Of these, 15 seem to be running our application software with no problems at all. The remainder consistently (some right away, others after a short amount of uptime) exhibit significant ethernet packet loss-- around 6-10% when doing a flood ping.) The "good" boards drop packets at well under 0.01%: about what I'd e...


LPC1766 Hard Fault

Started by Gregory N in LPC20007 years ago 6 replies

I really like the Cortex-M3 but sometimes the hard faults make me crazy. Let me describe the problem that I see now. If anyone has any good...

I really like the Cortex-M3 but sometimes the hard faults make me crazy. Let me describe the problem that I see now. If anyone has any good insights, I'd love to hear them. I am writing an Ethernet driver for the LPC1766 and I get the hardfault when returning from the very first ethernet interrupt. Here is the more detailed sequence of events. 1. A timer interrupt occurs, the driver polls...


LPC2368 RAM question

Started by drproton2003 in LPC200011 years ago 8 replies

Hello everyone, I'm working on a application that uses the LPC2368. This application will not make use of the ethernet portion. Therefore I...

Hello everyone, I'm working on a application that uses the LPC2368. This application will not make use of the ethernet portion. Therefore I would like to use the ethernet RAM as general purpose RAM. Do I need to do anything special to allow the RAM to be used in this way? Or can I just let my application grow beyond 32K and have the linker take care of all the details? I do my develop...


LPC2368/LPC2378 Ethernet question

Started by alexz4lpc in LPC200011 years ago 1 reply

I can't find in a user guide register for MAC address. Can anybody refer me to the proper sources/examples for the ethernet application for...

I can't find in a user guide register for MAC address. Can anybody refer me to the proper sources/examples for the ethernet application for these components? My assumption was that there will be dedicated register for MAC address and I will use some sort of Maxim or Microchip unique MAC address chip. Am I missing something here? Regards, Alex


LPC2366 & Ethernet

Started by miodragsm in LPC20009 years ago 1 reply

Hi all! I am just starting working with ARM. Before ARM I did some work with PIC, 8051 and Coldfire. After initial problems were solved...

Hi all! I am just starting working with ARM. Before ARM I did some work with PIC, 8051 and Coldfire. After initial problems were solved (like setting up OpenOCD and Eclipse) I managed to get UART and timers working and it's all great. Now I have a problem with Ethernet. I base most of my code on LPC23XX bundle code from NXP (which is for different compiler but so far I managed to get it ...


Induce a reset from software on LPC23xx

Started by Baldur Gislason in LPC20007 years ago 2 replies

Hi, I'm developing a device that uses an LPC2387 and communicates with fast ethernet. I have developed a loader for reflashing it over...

Hi, I'm developing a device that uses an LPC2387 and communicates with fast ethernet. I have developed a loader for reflashing it over ethernet, I burn that loader to a place in the flash and in the main program, I just disable interrupts and copy the address of the loader into the program counter when instructed to do so. However, I'd like a way to leave the loader once reflashing is complete...


Re: LPC2368 and ethernet datagrams next step

Started by Cristina - Ditel in LPC200010 years ago

Ok, thanks ----- Original Message ----- From: Steven Donegan To: l...@yahoogroups.com Sent: Thursday, February 28, 2008 2:01 PM ...

Ok, thanks ----- Original Message ----- From: Steven Donegan To: l...@yahoogroups.com Sent: Thursday, February 28, 2008 2:01 PM Subject: Re: [lpc2000] LPC2368 and ethernet datagrams next step http://www.cs.purdue.edu/homes/dec/netbooks.html His books are the 'bible' used to teach TCP/IP :-) They are fairly easy to read, well illustrated, plenty of example code etc. I te...


Ethernet with LPC2148 and ENC28J60

Started by Sutton Mehaffey in LPC20004 years ago 11 replies

In one of our systems, I want to add a simple email feature. I have email working on a wireless modem, but some of our customers want a...

In one of our systems, I want to add a simple email feature. I have email working on a wireless modem, but some of our customers want a direct connection to their network. Some time ago, I put a footprint for a ENC28J60 chip on our board, since the LPC2148 doesn't have ethernet built in. I haven't been able to find stack code written for the Keil compiler for this purpose. I saw that...


LPC2368 and ethernet PHY chip DP83848

Started by Steven in LPC200010 years ago 7 replies

Hi,i am dong a project with a lpc2368 and DP83848 for ethernet communication. i want to do the layout with two layer PCBA,but NXP application...

Hi,i am dong a project with a lpc2368 and DP83848 for ethernet communication. i want to do the layout with two layer PCBA,but NXP application note recommend do it with at least four layer, if anyone done the similar project with two layer PCB? please comment it, thanks in advance Steven Qin 2008-02-01 Zenitron Limited


LPC2468 ethernet interrupt behavior

Started by glory452 in LPC20008 years ago 2 replies

Hi all, I'm new to this group, be gentle :) Has anyone experienced receiving non-enabled Ethernet interrupts? For instance, RxFinishedInt and...

Hi all, I'm new to this group, be gentle :) Has anyone experienced receiving non-enabled Ethernet interrupts? For instance, RxFinishedInt and RxErrorInt are not enabled in the INTENABLE register. Inside my ISR however, INTSTATUS routinely indicates these interrupts are the source for the interrupt. I am also receiving RxDoneInt interrupts which I would expect and I have verified that the incomi...


Ethernet controller for LPC2106

Started by Mark Butcher in LPC200013 years ago 17 replies

Hi All I would like to make a LAN connection to an LPC2106 design. It seems best to use the SPI interface but I don't know...

Hi All I would like to make a LAN connection to an LPC2106 design. It seems best to use the SPI interface but I don't know much about SPI Ethernet controller support. After checking around I found the Microchip MCP22S80, a 10M device with SPI connection.


How To Use Ethernet DMA for external RAM usage

Started by Faruk BAYRAMOGLU in LPC20009 years ago

Hi, I'm using LPC2478 controller for my project, i'm going to use ethernet to f= rame buffer=A0 DMA link , I'd like to write=A0external...

Hi, I'm using LPC2478 controller for my project, i'm going to use ethernet to f= rame buffer=A0 DMA link , I'd like to write=A0external SDRAM with=A0Ethernet-DMA or=A0 GPDMA ( from e= thernet SRAM or direct write to external SDRAM space ) i think need to bridge AHB1 to AHB2 can anyone explain me how can i do? Thanks, Faruk=A0 ------------------------------------


Configuring DP83848H in MII mode for LPC2478

Started by sayali in LPC20006 years ago 5 replies

Hello all, I already have a code ready for Ethernet configuration in RMII mode. It is working fine. What i need to do is use the Ethernet...

Hello all, I already have a code ready for Ethernet configuration in RMII mode. It is working fine. What i need to do is use the Ethernet in MII mode. Following are the changes which i have made. but it doesnt seem to work. -------------------------- Original for RMII: /* Initialize MAC control registers. */ MAC_MAC1 = MAC1_PASS_ALL; MAC_MAC2 = MAC2_CRC_EN | MAC2_PAD_EN; MAC...


Asking about NXP Cortex M3 with USB and CAN (without ethernet)

Started by kprawiro in LPC20007 years ago 7 replies

Hi All, I need some information. I've been using LPC2138 for several projects. For the new projects, i need chip with USB and CAN controller(no...

Hi All, I need some information. I've been using LPC2138 for several projects. For the new projects, i need chip with USB and CAN controller(no ethernet,no external memory i/f, in LQFP64/LQFP48 package,256KB min.flash ). For the LPC2K family, only LPC2129 that has CAN controller but without USB device, and then for the LPC1700 i didn't find any chip with those criteria. And finally i found th...


Running code from Ethernet and USB RAM

Started by "h.belig" in LPC20009 years ago 11 replies

Did anybody ever run program code from the ethernet or usb RAM of LPC2468? I am using EA's LPC2486-16 OEM Board and Rowley`s "CrossStudio for...

Did anybody ever run program code from the ethernet or usb RAM of LPC2468? I am using EA's LPC2486-16 OEM Board and Rowley`s "CrossStudio for ARM". I modified the flash_placement file and created sections for these 2 16KB RAM areas. When I start debugging, I reach the subroutine that is placed in that ram section. I also can do some steps in the routine (assembler instructions), but then I...


Cyclic Ethernet frame loss with LPC2468

Started by rfinnovations in LPC20005 years ago 8 replies

Hi, Our design uses an LPC2468 with DP83848 PHY. We lose some Ethernet frames transmitted by our firmware. When I say that we lose the...

Hi, Our design uses an LPC2468 with DP83848 PHY. We lose some Ethernet frames transmitted by our firmware. When I say that we lose the frames, they have been transmitted as far as we can tell from the MAC registers in the LPC, but they are not detected by the PC at the other end of the wire (running a Wireshark capture). The test setup was an isolated point-to-point link with a s...