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Comp.Arch.Embedded is a worldwide Usenet news group that is used to discuss various aspects of Embedded Systems development.
We found 849 threads matching "spi"
You are looking at page 1 of 22.
The most relevant threads are listed first
Query Regardin SPI Capture
"The fountainhead" - 2008-01-17 06:45:00
I want to monitor SPI Data Communication which is happening between a
master and a slave.
For this i have tapped the SI and SO lines of the bus and connected
it to a microcontroller with 2 SPI Ports.
Each SPI port is monitoring one line of the SPI Communication .
I have connected the Si/So Lin...
AT91RM9200 SPI extrenal decoder problems
pj0585 - 2009-06-13 08:02:00
Hi,
Has anyone tried using AT91RM9200 with external decoder for SPI?
I'm trying to talk to 15 slaves through the SPI on my custom board.
When I configure the SPI in the external decoder mode then the SPI
peripheral is not giving chip select signals.
If anyone has tried this and has come a...SPI : Freescale vs Microchip compatibility ?
2007-03-07 07:30:00
Hi guys,
I would like to know if the SPI ports are fully
compatible between Freescale and Microchip ?
I understand that SPI has become a "de facto" standard
in the industry. The serial signals goes up to 10 Mbps,
which is enough for my app, and saves data/control buses.
Am I wrong to assu...regarding full duplex in SPI protocol
prav - 2004-12-28 23:36:00
Hi all,
I am a newbie to SPI protocol.I have a basic doubt in SPI protocol,
since SPI is a full duplex(i.e it can transmit and receive
simultaneously),can anybody suggest any application wher both the
transmitter ande the receiver are both
active at the same time.
From my understanding SPI...SPI evaluation
reverse.tdroovapednav.f - 2005-01-31 11:54:00
We have to evaluate the SPI bus implementation and drivers on one of
our devices. For that we are looking for the possibility to connect
the device with a PC, e.g. via a SPI to USB converter.
Can any one tell where to find these comverters and if there are other
types of converters available
...uC or standalone SPI slave with 25 MHz ? (Receiver only would be enough)
Martin Maurer - 2006-03-23 16:52:00
Hello,
is there any uC or standalone controller which can receive SPI data with 25
MBit/s ? I need this for a SDIO tracer (acting like a SPI slave), which is
sending 6 bytes each time. I saw different implementation for SPI in an
FPGA, is there one which is working / preferable ? A small FI...Programming AVRs with AVRISP when using the SPI bus at the same time?
Scotty - 2005-08-10 04:22:00
Hi
I would like to ask a question because i would like to make sure before
i try. I currently using a AVRISP programmer from Atmel which uses the
SPI to program the AVR. And i want to also use the SPI for
communication with a SD Card. I am wondering if there could be an
issue. Because one of ...Software SPI
terry - 2004-11-15 04:42:00
Hi,
Could anyone give me AVR source code to implement SPI by software? I
need it because I want to have SPI and also external interrupt on
ATTiny22. But the pins are overlapped if the two functions are used.
Thanks!
...Regarding SPI protocol( master)
prav - 2004-12-28 05:18:00
Hi all,
I have a basic doubt in SPI protocol.Suppose if i have a SPI master
which only transfers data to a slave but does not receive any data
from slave.
Is it possible in SPI protocl to enable only the Transmitter and
disable the receiver.
Thanks in advance,
Prav
...Serial Programming, SPI and ATmega
samad - 2004-07-24 23:23:00
Dear all,
I am trying to send commands to a max6952 LED driver via SPI with my
microcontroller (ATmega8) which has SPI, however I have never writtern
programing for serial communication, and I don't know were to start. Would
anyne be kind enough to guide me the write direction (documentation,
...PIC Micro SPI to SD Card Interface
ashpigel - 2009-12-02 07:59:00
Hi All,
I am going to use PIC microcontroller as SD card (SPI mode) controller by
the SPI interface of the PIC. Does anyone knows what is the effective baud
rate of SD in SPI mode? I means what is the actually data transfer rate
after removing the protocol added data, I am intending to work with t...(SPI equipped) Sensor Data to PC
hhausen - 2006-07-12 11:29:00
Hello, I'm new in this group, and I hope this is the right one to place
my question.
I am trying to connect a tilt sensor to a pc. The sensor device (Analog
Devices' ADIS16201) is accessable via spi. Unfotunately, I'm not very
conversant with programming Micros not even with programming serial
...SPI Length
Brett Foster - 2005-03-02 02:01:00
Okay I'll try to keep this simple:
I have a six pin ribbon cable that is 10 feet long. I am connecting 5
devices on the bus. Each device will draw ...SPI comunication
allievo - 2008-10-29 11:13:00
Hello,
I just received a Triboard for the Infineon TC1766 Tricore
microcontroller. I am trying to setup the SPI comunication with the
eeprom on the board, however there are no examples on how to configure
the micro. Would anyone know where I can
get an example of SPI implementation for the ...Favorite 3V / 5V interfacing technique?
H - 2005-09-14 00:16:00
Hi.
I'm working on a microcontroller app. An SPI peripheral only works at
3.3V while the micro only wants 5V. This SPI has to be bi-directional.
I'm trying to figure out a cost effective way of interfacing the two.
Micro's SPI pins are not open-drain. Trying to make it power efficient,...Lists of SPI interface paripheral chips?
Dave - 2006-06-09 13:20:00
As a follow on to my previous message about building sensors around the
MSP430 chip, I'm curious if anybody has a good resource for finding
what paripheral/interface chips are available with an SPI interface.
The MSP430 can be interfaced with lots of chips through other means,
but using the SPI ...Simultaneous use of USARTs and SPI on ATmega64
Anon - 2005-02-18 07:13:00
Dear All,
I guess a lot of you are using the AVR range of devices, so hope the answer
to my question below will seem straightforward.
The hardware engineers on my team wish to use the ATmega64 in a design we're
working on. I'm the software engineer. The design relies on having 2 UARTs
an...64MB SPI flash RAM?
David Linker - 2005-06-20 11:25:00
I am having trouble finding SPI flash RAM with capacities greater than 4
MB (64 Mb). I know that there are MMC cards with 64 MB (256 Mb)
capacities, that can easily be interfaced to SPI, but I would like to
find the RAM without the packaging.
Any pointers?
Thank you.
David Linker
...AT91SAM7S SCC port used as an SPI port
rickman - 2007-12-05 11:58:00
I once looked at the SAM7 parts for a project where I needed two SPI
ports and very low power. I was told by the vendor that the SCC port
could be used as an SPI port. Reading the data sheet does not make
this obvious. I guess I could program the SCC port for I2S operation
and use the frame s...dPac WLNB-AN-DP102-G SPI?
harold@hallikainen.com - 2007-08-21 13:58:00
Is anyone using this wlan module with SPI? I'm having trouble getting
it to work.
THANKS!
Harold
...SPI Bus noise reduction, any ideas?
Rob Horton - 2007-06-08 06:21:00
I have a number of boards with processors that communicate to about 10
different SPI connected devices, all on the same bus. 1 of these happens
to be an Atmel DataFlash. The DataFlash appears to be experiencing a
corrupted memory problem. These boards exist in fairly noisy
environments and t...Freescale MPC860
learnfpga@gmail.com - 2006-09-11 16:46:00
I am writing a simple SPI driver for this uC. I was wondering if
someone can help me with a little bit of C code to perform a simple
loopback test or point me in the right direction.
"The main obstacle is I dont know how to write RBASE and TBASE in SPI
PRAM to point to RxBD and TxBD in DPRAM."...Compact Flash (or SDRAM) to SPI interface
Al Clark - 2005-11-10 10:00:00
Does anyone have a source (or design) for a CF reader with a SPI interface?
An alternative would be a card that had at least 256M Bytes of SDRAM.
The SPI interface on this card would be configured as a slave.
--
Al Clark
Danville Signal Processing, Inc.
------------------------------...Atmel AT91SAM764 and SPI
Fred J - 2005-04-08 08:41:00
Hello everyone,
I've a problem with getting the SPI the AT91SAM64 MPU to work properly. Even
though I've configured the SPI mode register to use Fixed Pheriphal
Select(PS bit cleared). I'm using the PDC to transmit the data. According to
the Atmel documentation this should force the PDC to resul...USB -> SPI interface (FT2232C)
pmad1 - 2004-07-21 18:27:00
I pretend to control a PLL(ADF4113 Analog Devices) through the computer USB
Port. The PLL has a SPI bus interface and if the IC FT2232C is used the
translation from USB to SPI can be done(MPSSE mode). Do you this that this
solution will work or do you predicte any problems?
...Microcontrollers/Microprocessors with 3 or more SPI Controllers ?
RR - 2007-01-19 04:47:00
Can anyone reccomend some microcontrollers/microprocessors with 3 or
more SPI controllers ?
The only one I have found so far is the ST STR73xF ARM Microcontroller
( 3 x SPI).
RR
...SPI performance on Freescale MPC83xx?
Matthias - 2006-08-14 12:41:00
Hi,
In our project, due to some restrictions and requirements we would have
to use the SPI of a Frescale MPC83xx for receiving a continous stream
of serial data at a bit rate of at least 500 kbps, but would like to
use modes with up to 12 Mbps as well.
As it seems, there is no DMA support f...MSP4310F1611 SPI Interface w/ADC
AmyLe - 2007-09-14 12:59:00
Hi,
I want to know how I can interface the SPI with an external ADC. Has
anyone done this before?
Here is my INIT SPI function:
=============================INIT_SPI=================================
void Init_SPI(void)
{
P3SEL |= 0x3F; // Select P3.0,1,2,3,4,5
P3DIR |= 0x...MSP4310F1611 SPI Interface w/ADC
AmyLe - 2007-09-14 12:59:00
Hi,
I want to know how I can interface the SPI with an external ADC. Has
anyone done this before?
Here is my INIT SPI function:
=============================INIT_SPI=================================
void Init_SPI(void)
{
P3SEL |= 0x3F; // Select P3.0,1,2,3,4,5
P3DIR |= 0x...PowerPC 8272 SPI
Don - 2007-02-03 16:00:00
I was wondering if anyone had experience with the powerpc 8272 involving
the use of the SPI port. I was reading in the manual and I quote the
following in chapter 35 on the SPI hardware:
"The maximum sustained data rate that the SPI supports is SYSTEMCLK/50.
However, the SPI can transfer a sin...8051 connect LED, Button, and SPI
suds - 2008-02-17 09:10:00
Hi,
MCU,used 89C51
I am doing a project which involves, interfacing SPI or Microwire 3-wire
bus (DAC receiving data in SPI/Microwire), press button, and LED/Relay.
I dont know which ports need to be used for SPI Data, connecting LED, and
pres button switch. Also need any sample c program...SPI driver for arm running linux
Ali - 2007-03-18 03:31:00
Dear All,
I've arm board equipped with Samsung S3C2410A chipset. And
at the moment we are using 2.4.18-rmk7-pxa1 linux kernel. Now we need
to have SPI support for our product but through my search i have come
to know that there is no SPI driver for 2.6.x backward builds, my
conclu...SPI as secondary storage on ARM dev kit?
Mayank Kaushik - 2005-03-05 05:58:00
Hi,
Im trying to build a dev kit for the AT91rm9200, and have linux running
on the final board. However, due to the unavailability of buffers for
the parallel flash, i can only use the SPI DataFlash for storage, and
this is where the OS would reside.
If anyone out here has the At91rm9200-Dk...SPI communication protocol for micro-sd
kishor - 2009-05-28 05:44:00
Hi friends,
I am doing a data logger project, in which I have to log the 16
channel ADC's reading with time & date stamp. this requires huge
memory up to 3 Mbytes. So i decided to use micro-sd card.
I am using Silab C8051F340 micro-controller to interface with micro-sd
card with SPI. So I n...24-bit SPI?
orc - 2005-04-27 10:23:00
Hi,
Anyone knows an ARM controller with a 24-bit data lenght SPI bus? Several
devices like 24-bit ADC's has a SPI bus with 24-bit lenght but I havn't seen
any ARM controllers taht support that.
Thanks,
orc
...MSP430F1611 SPI.
AmyLe - 2007-09-10 20:00:00
Hi everyone,
I'm trying to interface an external ADC with the MSP430F1611's SPI.
I've written the code to initialize the SPI (seen below), but I now
want to test my Init_SPI by writing some data to it and probing it
using the scope to see that I've written data to it.
Eventually, I want t...Re: A quick c programming survey question
Ulf Samuelsson - 2004-05-17 17:34:00
I'd probably take it one step further:
#define sbit(bit,port) port |= (1 < < bit)
#define cbit(bit,port) port &= ~(1 < < bit)
#define LED_ON cbit(LED,PORTB)
#define LED_OFF sbit(LED,PORTB)
#define SPI PORTB
#define ASSERT_CS ...I2C vs SPI
Joe G (Home) - 2010-02-08 05:51:00
Hi All,
SPI is more simplistic in internal IC hardware design than I2c. If the SPI
data bus receive garbage (spikes or noise) you can pull the chip select high
and start clocking the data in/out again.
SPI has
/CS chip select
Clock
Data out
Data in
I2C has
Clock
Data
Question...maximum ranges of serial, spi, and I2C?
Michael - 2007-06-12 21:11:00
Hi there - can anybody tell me the maximum ranges of serial, SPI, and
I2C? Specifically, I'm referring to I2C running at 400Kbps, serial at
1Mbps, and SPI at 1Mbps. I guess with serial the physical layer used
changes things around alot - so I'm referring to RS-232. Is there a
better name than se...BlackFin BF531 SPORT as SPI
Vladimir Vassilevsky - 2006-10-07 12:15:00
Hello All,
There is a necessity to connect the 16 bit SPI DAC to the SPORT on the
ADSP BF531 (silicon rev. 0.3). I am initializing the SPORT in the
prescribed manner:
TCLKDIV = 2
TFSDIV = 31 // just in case
TCR2 = 0x000F; // word length - 1
TCR1 = 0x7603; // alt. framing mode
The SPO...