I2C

Started by omkar vyas in LPC200011 years ago 1 reply

hello, i want to use I2C for serial memory and also for (cog chip on glass)LCD display can any one give me the folw chart( in detail please ) for...

hello, i want to use I2C for serial memory and also for (cog chip on glass)LCD display can any one give me the folw chart( in detail please ) for the same . and how to go about it! details: processor ::Lpc 2104 compiler GCC-GNU tool chain. Thanking you! omkar DDS,R&D,Pune! __________________________________________________ ------------------------ Yahoo! Groups Sponsor ----------...


Sinewave Direct Digital Synthesis Example Posted

Started by tkreyche in LPC200013 years ago 3 replies

After getting a great deal of good advice from the group, here's my small contribution: A simple example of how to use the...

After getting a great deal of good advice from the group, here's my small contribution: A simple example of how to use the LPC2138 to create a sine wave using direct digital synthesis (DDS). It was developed for the Keil LPC2138 board and compiler and puts out


DDS working

Started by Leon Heller in LPC200014 years ago 12 replies

Thanks for the suggestions. It's working OK now (sine, triangle, sawtooth and square waves) with the following code: adder...

Thanks for the suggestions. It's working OK now (sine, triangle, sawtooth and square waves) with the following code: adder = 202500; //set up adder acc = 0; //clear accumulator while (1) { acc = acc + adder; //update phase accumulator ptr = (acc


Problem with DDS

Started by Leon Heller in LPC200014 years ago 8 replies

I'm using the following code for software direct digital waveform synthesis: int main(void) { unsigned int i; unsigned long...

I'm using the following code for software direct digital waveform synthesis: int main(void) { unsigned int i; unsigned long int acc, adder; unsigned int ptr, temp; initPLL(); MAMCR = 0; MAMTIM = 5; MAMCR = 2; VPBDIV = 0x01; port


Opening up space in the "Files Section" // any objections?

Started by lpc2100_fan in LPC200012 years ago 1 reply

Hi, there was a discussion a while ago about switching to a different, not so size constraint medium to replace the Yahoo Forum. Back...

Hi, there was a discussion a while ago about switching to a different, not so size constraint medium to replace the Yahoo Forum. Back then I volunteered to reduce file sizes of existing pictures or pdf documents which account for a big chunk of the used space. As an example, I reduced the file size of the DDS folder by optimizing the pdf files


Help needed getting Aout working on LPC2468

Started by Martijn Broens in LPC20008 years ago 11 replies
DDS

Hi All, I've got this routine to setup and controll the dac output on the lpc2568 (bga version) This code runs fine on the EA LPC2478 OEM...

Hi All, I've got this routine to setup and controll the dac output on the lpc2568 (bga version) This code runs fine on the EA LPC2478 OEM board. And produces in conjuction with the dds code from the files section a sinewave. When I run the same code on my own hardware (but this holds an lpc2568 BGA) the code doesn't produce the output, nor can I cnagne the dac value. i.e. when measuring...


Re: pll values change Runtime

Started by mtrangoni in LPC20009 years ago
DDS

--- In l...@yahoogroups.com, "Mehmet" wrote: > > I'd like to change lpc2468's cclk frequency during Runtime. When i=20 > reconfigure pll...

--- In l...@yahoogroups.com, "Mehmet" wrote: > > I'd like to change lpc2468's cclk frequency during Runtime. When i=20 > reconfigure pll by changing N, M values during runtime. Nothing=20 > changes. =DDs it possible to change cclk frequency during runtime. > Yes, you have to change the only one register value that configure PLL, and then relock PLL, that means that you