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Hello guys,Im working on a new project and am having som problems using interrupts. It is a custom boardand I'm using the UART1 RDA interrupt...

Hello guys,Im working on a new project and am having som problems using interrupts. It is a custom boardand I'm using the UART1 RDA interrupt as FIQ, timer1 and EINT3 as vectored IRQ.The sources forEINT3 are the pins P2.5, P2.6 and P2.8, sensing the falling edge.The system starts fine and work great for a while, then, after some pin state change on one ofthe EINT3 pins he reaches the "__def...

I have a project that uses LPC2387 and makes extensive use of the timer match outputs.A problem I have is that the timer match control is stored...

I have a project that uses LPC2387 and makes extensive use of the timer match outputs.A problem I have is that the timer match control is stored in the same register as the status ofthe bits.This is the TxEMR register.Bits 3 through 0 contain the states of the output pins, readable and writable.Bits 11 through 4 contain the control bits that tell the comparators what to do on a match.Pr...

Hi, I am trying to implement Embedded Web Server wherein i have ported MicroC/OS-II RTOS on NXPLPC2148 MCU with a few sensors interfaced to...

Hi, I am trying to implement Embedded Web Server wherein i have ported MicroC/OS-II RTOS on NXPLPC2148 MCU with a few sensors interfaced to monitor temperature, moisture level and humidity. I am planning to use TCP-232-T from USR which is TTL UART to Ethernet TCPIP convert module sothat the sensor parameters can be monitored remotely on a client PC using a web browser. Since i have no ...

HiSomeone used the Conexant CX93510 jpeg encoder already?Could you share your experience with me?ThanksSergio

HiSomeone used the Conexant CX93510 jpeg encoder already?Could you share your experience with me?ThanksSergio

I have been trying to build a Mp3 Player for my project using LPC2148.I need to interface SDcard which will be containing the songs and the...

I have been trying to build a Mp3 Player for my project using LPC2148.I need to interface SDcard which will be containing the songs and the output of the SD card will be given to theinbuilt DAC to produce the analog sound signal.I am finding it quite difficult to implement.Cansomeone please help me.Also I wanted to know that if it possible to play MP3 files usingLPC2148?How can I interface my ...

Hi everyone I have found that a GPIO interrupt sharing EXTINT3 with the highest priority hasabout 60usec. latency instead of EXTINT3 pin. Can...

Hi everyone I have found that a GPIO interrupt sharing EXTINT3 with the highest priority hasabout 60usec. latency instead of EXTINT3 pin. Can this feature be fixed?Is there any method?I am trying to interface a barcode reader and I am loosing always the 1st clock.I am using gcc gnu arm with eclipse IDE. Thanks In Advance Chris

Hi All,In my setup I have my LPC connected to Ubicom IP3023. The Ubicom ismaster and LPC is slave. Currently we are using Bit banging as a...

Hi All,In my setup I have my LPC connected to Ubicom IP3023. The Ubicom ismaster and LPC is slave. Currently we are using Bit banging as a meansto communicate between these devices. This is rather slow and we plan touse the hardware. I am very new to this so can anyone suggest a samplecode to look at for SPI in slave mode on LPC? Also if there are anysamples for master mode will also b...

I am using the LPC2148 with a 12MHz crystal using a 5 multiplier to have 60MHz CCLK. PCLKrunning at same frequency as CCLK. I had some working...

I am using the LPC2148 with a 12MHz crystal using a 5 multiplier to have 60MHz CCLK. PCLKrunning at same frequency as CCLK. I had some working software triggered ADC code. When I addeda PWM output with a match interrupt, the ADC always returns 0 (the PWM output is workingcorrectly) I can't figure out why this is happening. Any help would be appreciatedHere is a link to the PastBin for the co...

Hi all,I am facing a problem during wake up from power down via RTC interrupt.Let me explain; my LPC uses a battery as power back up when...

Hi all,I am facing a problem during wake up from power down via RTC interrupt.Let me explain; my LPC uses a battery as power back up when external power supply is down. Whenit switches in PD mode I wake up the MCU via RTC interrupt to check the battery level via A/Dand then go to PD again. I have no idea when but some times when it wakes up from RTC INT I seeto the multimeter that the devi...

I am writing some code for the LPC2148. I have some working ADC code using AD0.3 on P0.30. Afteradding PWM using PWM5 on P0.21 with match...

I am writing some code for the LPC2148. I have some working ADC code using AD0.3 on P0.30. Afteradding PWM using PWM5 on P0.21 with match interrupts, the ADC always returns 0. I have beenunable to determine why. Any help would be appreciated. Here is the code for each: ADC Code: // Select P0.30 as AD0.3 PINSEL1 |= (1<< 28); int GetADCResult(void){ int result = 0; // Perform