Re: ADC Interface

Started by rtstofer in LPC200011 years ago

--- In l...@yahoogroups.com, "samiehg" wrote: > > Hi > Has anybody interfaced with Texas instrument ADC > ...

--- In l...@yahoogroups.com, "samiehg" wrote: > > Hi > Has anybody interfaced with Texas instrument ADC > (TLC3574/TLC3578/TLC2574/TLC2578) ? > > I am having problems interfacing it with the SPI module. I have posted > some questions to their tech support, but thought of asking if anybody > else has done it before who would be willing to share their knowledge. > > Thanks


ADC input leakage current

Started by Sutton Mehaffey in LPC200013 years ago 7 replies

Does anyone (or Philips Techs) know the max input current leakage of the ADC channel input pins? The LPC2148 datasheet says that the input...

Does anyone (or Philips Techs) know the max input current leakage of the ADC channel input pins? The LPC2148 datasheet says that the input leakage current is max 4uA, but I am thinking that this MAY apply just to the digital signal pins. We are trying to use one of the ADC channels in conjunction with a very accurate voltage divider for determining battery voltage for a battery powered app


LPC3180 SPI interfac

Started by ankit thakkar in LPC200010 years ago 1 reply

Hello friends, =C2=A0 I want to use SPI interface of LPC3180 to fetch data from ADC and DAC chips= . The maximum data length supported by...

Hello friends, =C2=A0 I want to use SPI interface of LPC3180 to fetch data from ADC and DAC chips= . The maximum data length supported by LPC3180 is 16 bits and data length pro= duced by ADC DAC chips is 18 bits.=20 But i want to use only SPI interfacing to communicate with ADC and DAC chip= s. Please provide me the solution. =C2=A0 Thank you, =C2=A0 Ankit Thakkar Connect with f...


ADC Suggestions

Started by Brian C. Lane in LPC200015 years ago 4 replies

I'm working on designing a new project where we need to process 9600bps packets (similar to G3RUH format), we'd like to use the...

I'm working on designing a new project where we need to process 9600bps packets (similar to G3RUH format), we'd like to use the LPC2106 which ought to be fast enough. But I'm having trouble coming up with a suitable ADC. It needs to sample at 48khz, 10 bits are fine, 2 channels.


Memory Check. Simultaneous DAC and ADC

Started by burtswp in LPC200013 years ago 2 replies

I have this memory (probably I'm hallucinating) that I read about a problem using the ADC and the DAC at the same time on those LPC213x ...

I have this memory (probably I'm hallucinating) that I read about a problem using the ADC and the DAC at the same time on those LPC213x chips that have the DAC. I've done a search and haven't found anything like that. Does anybody else remember anything like that? Did I dream it or just get it confused with something else?


ADC Problem

Started by tiogate in LPC200014 years ago 2 replies

Could anyone please post a little working C code for the ADC on LPC2124 (or equivalent)? I'm having a hard time reading the data...

Could anyone please post a little working C code for the ADC on LPC2124 (or equivalent)? I'm having a hard time reading the data register, or interpreting it: the 10 bits where the result of the conversion was supposed to be are all ones, all the time, no matter what tensi


Re: Digest Number 3046

Started by Victor Suarez in LPC200011 years ago 1 reply

> > Anyone knows if I can operate the two ADC interlevaded or in parallel > > to achieve 800KHz sampling? > > We use a LPC213x with...

> > Anyone knows if I can operate the two ADC interlevaded or in parallel > > to achieve 800KHz sampling? > > We use a LPC213x with 200 KHz sampling for a DAC interleved with 2 > channels of ADC, each at 100KHz. It's pusing it to its limits, though: > getting the samples in and out of the device at those rates is quite a > challenge if any time is to be left for processing. > I don=B


ADC

Started by aby vj in LPC200012 years ago 2 replies

Hi all, Do any ony have sample codes for configuring the onchip ADC and also for interfacing LCD to ARM 2103? Regards ...

Hi all, Do any ony have sample codes for configuring the onchip ADC and also for interfacing LCD to ARM 2103? Regards Aby --------------------------------- Find out what India is talking about on - Yahoo! Answers India Send FREE SMS to your friend's mobile from Yahoo! Messenger Version 8. Get it NOW


ADC Interrupts in the LPC2214

Started by bmiller_rc in LPC200013 years ago

We are trying to use the ADC interrupts in the LPC2214. We use the following code and get a ready bit but no interrupt. Could someone ...

We are trying to use the ADC interrupts in the LPC2214. We use the following code and get a ready bit but no interrupt. Could someone that has been through this drill take a look. We have generated interrupts using the capture registers, but that is about it so far. Thanks for the help. ----------------------------------------------------- ------


LPC2378-STK ADC Problem

Started by quesha0811 in LPC20007 years ago

Hello all, I have been trying to display the analog value real time on the LCD from the ADC..I am unable to get the required result..kindly refer...

Hello all, I have been trying to display the analog value real time on the LCD from the ADC..I am unable to get the required result..kindly refer to my code below and check if i have done anything wrong..for your information, i checked that P0.23 which is configured as AD0.0 is giving a value of 2.2V when checked with the multimeter using the EXT-2 connector on board..Thanks in advance.. int ma...


Re: Cannot jump into ADC's VIC (LPC2129,2138 on MCB2100 board)

Started by Aalt Lokhorst in LPC200013 years ago

Hello J?rgen I think you need to use VICIntEnable = 0x00040000 instead of VICIntEnable = 0x00004000 Or even more readable if...

Hello J?rgen I think you need to use VICIntEnable = 0x00040000 instead of VICIntEnable = 0x00004000 Or even more readable if you try to set bit 18: VICIntEnable = (1<<18); If you don't want to rely on the default value of VICIntSelect then it is better to clear bit 18 in this register (to be sure the ADC interrupt wel


Deeper Detials on ADC LPC2114 2124 LPC2138

Started by phlpcmicro in LPC200014 years ago 3 replies

Hi All, I am looking for block diagrams and operation and suggested usage detials on the LPC ADCs? Both the UM and DS...

Hi All, I am looking for block diagrams and operation and suggested usage detials on the LPC ADCs? Both the UM and DS are a little light on for detials. What is the ADC input impedance? How does the FIFO operate. Question I


LPC3180 - Linux - ADC Support

Started by david henry in LPC200010 years ago 3 replies

I've been scanning the Linux source tree supplied for the LPC3180 development board and cannot find anything related to ADC support. Look like...

I've been scanning the Linux source tree supplied for the LPC3180 development board and cannot find anything related to ADC support. Look like I'll have to develop it myself but before doing so I thought I'd ask if its there and I just missed it. I don't want to re-invent the wheel if possible. Cheers, David ------------------------------------


External ADC Problem

Started by Leighton Rowe in LPC200014 years ago 3 replies

I need a little advice with using external ADC's with lpc processors. Apparently, the reference, analog ground, and input...

I need a little advice with using external ADC's with lpc processors. Apparently, the reference, analog ground, and input signals looks somewhat distorted (spiky) on the oscilloscope whenever the 16-bit (unipolar) Converter is busy converting. As a result, the readi


LPC2468 ADC values are always zero

Started by tike64 in LPC200011 years ago 26 replies
ADC

Hello everyone, I'm trying to get the ADC of the LPC2468 working but have had no luck so far. The result is always zero. I have checked the...

Hello everyone, I'm trying to get the ADC of the LPC2468 working but have had no luck so far. The result is always zero. I have checked the voltages (VREF, VDDA, VSSA and relevant AD0 inputs), PINSEL registers (which should have no effect, though) and PCON register. When I write 0x0120FF01 to AD0CR the DONE bits will go high after a short time (and clear by reading them) in AD0GDR and ADDR...


LPC2103 ADC input impedance

Started by "Charles R. Grenz" in LPC200011 years ago 4 replies

Hi all, Does anyone know what the input impedance for the ADC of the LPC2103 is? Also can anyone recommend a good book that explains USB...

Hi all, Does anyone know what the input impedance for the ADC of the LPC2103 is? Also can anyone recommend a good book that explains USB 2.0? Thanks in advance, Charles


uC hangs when initialising external interrupt

Started by laurensswaans in LPC200013 years ago 4 replies

Hello, I'm using the LPC2129 (on the MCB2100 board by Keil) to communicate with an ADC via SPI. The ADC sends a pulse when new data is...

Hello, I'm using the LPC2129 (on the MCB2100 board by Keil) to communicate with an ADC via SPI. The ADC sends a pulse when new data is valid on its output and I use this pin to trigger an external interrupt. I've used interrupts in my designs before so I have a routine that works. But as soon as I add the functions (init and ISR) the micro


LPC ADC

Started by Rahul Gaikwad in LPC200011 years ago 2 replies

does the ADC of LPC2138 work in bipolar mode i have a 50 hz 2.5V sine wave which i need to sample using the...

does the ADC of LPC2138 work in bipolar mode i have a 50 hz 2.5V sine wave which i need to sample using the lpc2138 regards, cosmoalien ____________________________________________________________________________________ Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545433 ...


LPC2378 Max practical ADC rate?

Started by JRog...@of-one.com in LPC200010 years ago
ADC

Hello, I am considering useing the LPC2378 (on the Keil MCB2300 board) to collect short bursts of data - 50 to 200 samples. I would like to...

Hello, I am considering useing the LPC2378 (on the Keil MCB2300 board) to collect short bursts of data - 50 to 200 samples. I would like to sample at 200Khz... Has anyone tried this? Please comment on the max reliable ADC rate that you were able to achieve with the LPC2378 (or similar). Thanks!!! ------------------------------------


LPC213x, analog port question.

Started by lp2000c in LPC200014 years ago 5 replies

The LPC213x has 16 pins which CAN be configured as an ADC input. Does this mean that I can't apply more than 3.3V to any of...

The LPC213x has 16 pins which CAN be configured as an ADC input. Does this mean that I can't apply more than 3.3V to any of these pins, without corrupting ADC operation? --- In , "Richard" wrote: > > Note: 5V on any pin that