INterfacing USB-HID to LPC2148

Started by "ami...@gmail.com [lpc2000]" in LPC20001 month ago

Hello All, Greetings for the day. Please guide me with the stepwise environment to interface the Keypad as an i/p to LPC2148 & ...

Hello All, Greetings for the day. Please guide me with the stepwise environment to interface the Keypad as an i/p to LPC2148 & Sending the corresponding o/p to the PC via USB. I have done the Keypad interface & need to understand the o/p manipulation to send the corresponding data via USB to the PC. If you have any referral code for the same will help better understand.Tha...


Interrupt not serviced when using two capture pins on the same timer on LPC2132

Started by "gab...@yahoo.it [lpc2000]" in LPC200011 months ago

Hello, I have problems on my board trying to use two capture pins on the same timer. My purpose is to use CAP0.2 (PIN0.28) and CAP0.3...

Hello, I have problems on my board trying to use two capture pins on the same timer. My purpose is to use CAP0.2 (PIN0.28) and CAP0.3 (PIN0.29) on Timer0 in order to generate two interrupt. CAP0.2 is set to generate an interrupt on a Rising Edge and CAP0.3 on a falling edge. The problem is that if I use only CAP0.3 I have the Interrupt serviced and handled correctly, If I add also CAP0.2, ...


Timer external match design silliness

Started by "Bal...@foo.is [lpc2000]" in LPC200011 months ago 1 reply

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 of the 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...


Embedded Web Server using TTL UART to Ethernet TCP/IP converter

Started by "che...@yahoo.co.in [lpc2000]" in LPC20001 year ago 4 replies

Hi, I am trying to implement Embedded Web Server wherein i have ported MicroC/OS-II RTOS on NXP LPC2148 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 NXP LPC2148 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 so that the sensor parameters can be monitored remotely on a client PC using a web browser. Since i have no ...


Conexant CX93510 JPEG encoder

Started by "ser...@terra.com.br [lpc2000]" in LPC20002 years ago 2 replies

Hi Someone used the Conexant CX93510 jpeg encoder already? Could you share your experience with me? Thanks Sergio

Hi Someone used the Conexant CX93510 jpeg encoder already? Could you share your experience with me? Thanks Sergio


Building a MP3 Player using LPC2148

Started by "Nat...@yahoo.com [lpc2000]" in LPC20002 years ago 7 replies

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


LPC2387 GPIO interrupt latency

Started by "ger...@yahoo.gr [lpc2000]" in LPC20002 years ago 8 replies

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

Hi everyone I have found that a GPIO interrupt sharing EXTINT3 with the highest priority has about 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


LPC2368 SPI Driver

Started by "Var...@mstglobal.com [lpc2000]" in LPC20002 years ago 5 replies

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


PWM Conflicts with ADC on LPC2148

Started by "Ben...@yahoo.com [lpc2000]" in LPC20002 years ago 1 reply

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


lpc2387 wake up from power down problem

Started by "ger...@yahoo.gr [lpc2000]" in LPC20002 years ago 3 replies

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. When it switches in PD mode I wake up the MCU via RTC interrupt to check the battery level via A/D and then go to PD again. I have no idea when but some times when it wakes up from RTC INT I see to the multimeter that the devi...


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