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design rtos for lpc2148

Started by preethamreddy1989 in LPC200011 years ago 10 replies

hello friends i need a rtos program to run 3 task 1.task should measure the value (ade7757) 2.it should display on lcd 3.it should send data...

hello friends i need a rtos program to run 3 task 1.task should measure the value (ade7757) 2.it should display on lcd 3.it should send data to zigbee can anyone give me idea how write the program


LPC17xx SCB->AIRCR:SYSRESETREQ

Started by Triffid Hunter in LPC200011 years ago 7 replies

Hi, The LPC17xx user's manual (UM10360) says that SCB-> AIRCR:SYSRESETREQ is not supported by LPC17xx, and yet NXP's own CMSIS 2.0 for...

Hi, The LPC17xx user's manual (UM10360) says that SCB-> AIRCR:SYSRESETREQ is not supported by LPC17xx, and yet NXP's own CMSIS 2.0 for LPC17xx implements NVIC_SystemReset() using it. When I use NVIC_SystemReset in my programs, it appears to function as intended. Is the datasheet wrong, is SYSRESETREQ actually supported on LPC17xx? ------------------------------------


GHI Electronics FEZ Spider

Started by "Thomas D. Dean" in LPC200011 years ago 2 replies

I have a GHI FEZ Spider with a GHI EMX board containing an LPC2478 ARM. To use this board as GHI wants, I need to have the entire Microsoft...

I have a GHI FEZ Spider with a GHI EMX board containing an LPC2478 ARM. To use this board as GHI wants, I need to have the entire Microsoft world on my back plus the GHI stuff! I was investigating using gadgeteer. GHI made a minor version change to the SDK, 4.1 to 4.2 and broke everything. My code will no longer compile. I have to generate the project from scratch and copy/paste my ...


How to make efficient RX ISR usage on FreeRTOS

Started by skiddybird in LPC200011 years ago 15 replies

Hi, Can anyone tell me how to write an UART RX ISR in order to receive several kinds of packets with different length? The kernel is FreeRTOS. I...

Hi, Can anyone tell me how to write an UART RX ISR in order to receive several kinds of packets with different length? The kernel is FreeRTOS. I have excerpted one piece of sample code snippet from one of the FreeRTOS demo port for LPC2129, as bellow. [code] __arm void vSerialISR(void){ signed char cChar; portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE; switch(U0IIR & serIN


Cortex M interrupt priority levels reference

Started by Alexan_e in LPC200011 years ago 14 replies

Hi Where can I check the available interrupt priority levels for a certain device? For example LPC13xx and LPC13Uxx use an M3 core but...

Hi Where can I check the available interrupt priority levels for a certain device? For example LPC13xx and LPC13Uxx use an M3 core but unlike the LPC177x have just 8 priority levels (using just three bits), where can I find that info? It is not in the user manual, the LPC13xx manual points to "See the ARM Cortex-M3 technical reference manual." but the M3 reference is the s


[lpc1114] can't blink PIO0_0

Started by Wouter van Ooijen in LPC200011 years ago 5 replies

I am experimenting with the LPC1114FN28/102, the DIP28 version of the LPC1114. I use lpc21isp to download to the chip (I added the extra line to...

I am experimenting with the LPC1114FN28/102, the DIP28 version of the LPC1114. I use lpc21isp to download to the chip (I added the extra line to support this chip as suggetsed by http://www.meatandnetworking.com/tutorials/lpc1114fn28-with-open-source-tools/). The reset pin of this chip doubles as PIO0_0, so I was curious to see how the bootload process would go when that pin is repurposed as ...


LPC812 LPCXpresso Boards

Started by leon_heller in LPC200011 years ago 7 replies

Mouser has LPC812 LPCXPresso boards in...

Mouser has LPC812 LPCXPresso boards in stock: http://uk.mouser.com/ProductDetail/NXP/OM13053/?qs=%2fha2pyFaduhyZupyIaCHUDqnloo%252bx0vTT1i1rZH G24g%3d Leon ------------------------------------


Elm-chan LPC23xx example compile for LPC2468

Started by "Harshad (Madhav)" in LPC200011 years ago 4 replies

Hello, I have Elm-chan Sample code for LPC23xx Download Link : http://elm-chan.org/fsw/ff/ffsample.zip I want to convert this project for...

Hello, I have Elm-chan Sample code for LPC23xx Download Link : http://elm-chan.org/fsw/ff/ffsample.zip I want to convert this project for LPC2468. From where can I find LPC2468.ld file ? What other settings do I need to set for LPC2468? ------------------------------------


XBee Sleep Mode Integration with LPC2148

Started by Shashank Maheshwari in LPC200011 years ago 7 replies

Hi Guys I have been running XBee 2 (from Digi Corp) in the AT transparent mode and it communicates well with the LPC using UART. 1. I am...

Hi Guys I have been running XBee 2 (from Digi Corp) in the AT transparent mode and it communicates well with the LPC using UART. 1. I am facing issues with putting it into sleep mode. According to the manual pin 9 is the "sleep control" pin and pin 13 is the "sleep status" pin. Even by changing the pin state at 9th pin the state of 13th pin remains high (signifying the active state of...


LPC 2458 ISP Mode from User Code

Started by boru2600 in LPC200011 years ago 24 replies

Greetings, Community. I'm trying to get a LPC 2458 to drop into ISP mode after reset (I have the reset working via the watchdog). I've had a...

Greetings, Community. I'm trying to get a LPC 2458 to drop into ISP mode after reset (I have the reset working via the watchdog). I've had a look around a few forums/websites - including NXP documentation - and this group but the examples I've seen don't work for me. The information I have so far is mostly from the following links: http://www.compuphase.com/lpc2100_isp.htm http://electron...


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