<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>SPI</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/19561/spi</link><description> It should be fairly straightforward to write and read a 25xxx eeprom thru the SPI bus using the pc serial port with Keil software. 
But nowhere do I find the DB-9 to SPI connections. Which pins connects to sck, mosi, miso,cs ? 
Can you help? 
Thanks</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: SPI</title><link>https://community.arm.com/thread/157066?ContentTypeID=1</link><pubDate>Fri, 02 Dec 2005 10:47:45 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:d134120c-cc6a-4b96-bd18-e94d7258f93d</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;At a glance that sure looks like a possibility. Cost is one of the most important factors. I noticed that they have footprints and schematics for Protel. That helps a whole lot.&lt;br /&gt;
Nordic reccomends :&lt;br /&gt;
&lt;a href="http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/Interface/en/interface.htm" target="_blank"&gt;http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/Interface/en/interface.htm&lt;/a&gt;&lt;br /&gt;
However I came across this earlier this morning:&lt;br /&gt;
&lt;br /&gt;
&lt;a href="http://www.lancos.com/e2p/si-prog-v2_2.pdf" target="_blank"&gt;http://www.lancos.com/e2p/si-prog-v2_2.pdf&lt;/a&gt;&lt;br /&gt;
 which seems to be what I have been looking for all along.&lt;br /&gt;
It comes with a nice GUI that loads the hex code.&lt;br /&gt;
Most of the circuit is power supply.The pertinant part is the db9 to 25xxx230 eeprom wiring. Wonder why they used a transistor to switch cs ?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/156947?ContentTypeID=1</link><pubDate>Fri, 02 Dec 2005 10:19:20 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:7b5274ed-f160-4597-aae4-7a26f94bcb21</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;&lt;i&gt;&amp;quot;... the other which contains a uart and a serial to usb translator. So you can load your app code to the eeprom via the pc usb and then plug it into the app circuit.&amp;quot;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
Then if you are using something like an FTDI FT2232C &lt;a href="http://www.ftdichip.com/Products/FT2232C.htm" target="_blank"&gt;http://www.ftdichip.com/Products/FT2232C.htm&lt;/a&gt; you can dispense with its USB-to-UART functionality and use its USB-to-SPI mode &lt;a href="http://www.ftdichip.com/Projects/MPSSE/FTCSPI.htm" target="_blank"&gt;http://www.ftdichip.com/Projects/MPSSE/FTCSPI.htm&lt;/a&gt; or in its &amp;quot;Bit-Bang IO&amp;quot; mode to program your EEPROM.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/156819?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 19:17:43 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:92b4e0fa-94ef-47e2-a8b3-b5b22ab28947</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Are you designing your own PCB that incorporates an nRF9E5 and EEPROM?&lt;br /&gt;
&lt;br /&gt;
Actually 2 pcbs. One contains the nrf9E5,  eeprom and connectors for the adc and i/o port. This plugs into the other which contains a uart and a serial to usb translator. So you can load your app code to the eeprom via the pc usb  and then plug it into the app circuit.&lt;br /&gt;
&lt;br /&gt;
Taking the EEPROM totally out of the equation for this question, will the application running in the nRF9E5 need to communicate via the MCU&amp;#39;s UART and RS-232 to provide some user interface or debug output to a terminal emulator or anything similar?&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
I dont think that is necessary. C&lt;br /&gt;
&lt;br /&gt;
 That is, again taking the EEPROM totally out of the equation for this question, is there any reason whatsoever that your PCB would require an RS-232 driver/receiver?&lt;br /&gt;
&lt;br /&gt;
Just to program the eeprom.&lt;br /&gt;
&lt;br /&gt;
Does your design require (re)programming of the EEPROM in-circuit without removing it from your PCB?&lt;br /&gt;
&lt;br /&gt;
The eeprom is a smd. Have to plug the board into the programmer to reprogram it.&lt;br /&gt;
So really all I need is a  serial eeprom programmer  running thru the pc serial port. And software to flash the eeprom and compile the code and all that.&lt;br /&gt;
Its an evaluation board and a programmer with expandable i/o interfaces.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/156671?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 14:19:52 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:300851d5-0325-4536-af44-3e895be9355c</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;&lt;i&gt;&amp;quot;All that is unclear now is the uart to spi buss connections.&amp;quot;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
After reading the exchanges in this thread, I am still somewhat unclear regarding your requirements.&lt;br /&gt;
&lt;ul&gt;&lt;li&gt;Are you designing your own PCB that incorporates an nRF9E5 and EEPROM?&lt;/li&gt;
&lt;li&gt;Taking the EEPROM totally out of the equation for this question, will the &lt;b&gt;application&lt;/b&gt; running in the nRF9E5 need to communicate via the MCU&amp;#39;s UART and RS-232 to provide some user interface or debug output to a terminal emulator or anything similar?  That is, again taking the EEPROM totally out of the equation for this question, is there &lt;b&gt;any&lt;/b&gt; reason whatsoever that your PCB would require an RS-232 driver/receiver?&lt;/li&gt;
&lt;li&gt;Does your design require (re)programming of the EEPROM in-circuit without removing it from your PCB?&lt;/li&gt;&lt;/ul&gt;
Your answers may lead to further questions.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/156523?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 12:25:34 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:04d1f9d8-4389-4e92-b48a-0e5ab728e735</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Well,well,well. I seemed to have overlooked the uart in the grand scheme of things. I&lt;br /&gt;
see what you mean now.&lt;br /&gt;
The programming software is independant of the rs232 conections. They are defined by the 232 standard and the uart.&lt;br /&gt;
All that is unclear now is the uart to spi buss connections.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/156350?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 11:53:03 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:1a3e1c23-37f9-4291-963b-10d8af61d795</guid><dc:creator>erik  malund</dc:creator><description>&lt;p&gt;I can&amp;#39;t but here it is:&lt;br /&gt;
&lt;br /&gt;
&lt;a href="http://www.national.com/an/AN/AN-917.pdf" target="_blank"&gt;http://www.national.com/an/AN/AN-917.pdf&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;
Erik&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/156142?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 11:41:03 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:215bece3-2b28-444c-be19-0e712ca91cb4</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Could you define standard configured DB9 please ?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/155904?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 11:11:22 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:6f11cd43-e867-4f0d-9f8d-fc83c8ddcad6</guid><dc:creator>erik  malund</dc:creator><description>&lt;p&gt;Are you saying that The Keil MCB900 board and LPC93x and CodeArchitect for LPC932 will provide this ?&lt;br /&gt;
&lt;br /&gt;
CodeArchotect has nothing to do with actual connections, that is not &amp;quot;code&amp;quot;.  The MCB-900 board connect a standard configured DB9 through a transciever to the proper pins on the LPC.&lt;br /&gt;
&lt;br /&gt;
Erik&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/155318?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 10:25:06 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:3ef3bf01-212a-43fd-b792-c8dde2b8360f</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;&lt;i&gt;&amp;#39;Finally, &amp;quot;FWIW, I happen to have used TD&amp;lt;-&amp;gt;SCK, DTR&amp;lt;-&amp;gt;MOSI, and CTS&amp;lt;-&amp;gt;MISO through RS-232 transceivers for some bit-banged applications. &amp;quot; Isnt this going to depend on the software ?&amp;#39;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
Yes, my software is structured so that one can pretty much move RS-232 to SPI signal assignments around to suit their needs (assuming one does not violate the &amp;quot;directions&amp;quot; of the RS-232 signals).&lt;br /&gt;
&lt;br /&gt;
In my case, the client wanted to use a standard DB-9 serial cable from PC to target to both communicate normally between PC and target application, and perform in-system target MCU (re)programming using SPI without any other special external hardware.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/155639?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 10:12:32 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:648732b7-9320-40c1-9433-7eff083a6c4f</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Ok. then I need the db9 to uart connections and the uart to eeprom connections and the software that drives the whole thing.&lt;br /&gt;
Are you saying that The Keil MCB900 board and LPC93x and CodeArchitect for LPC932 will provide this ?&lt;br /&gt;
What about the part where Keil says to use MCBX51 EVALUATION BOARD ?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/155317?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 09:41:17 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:7e342a39-061b-43e8-883d-2c157db9ec24</guid><dc:creator>erik  malund</dc:creator><description>&lt;p&gt;&lt;i&gt;Actually all that I need is the DB9 to spi buss connections that CodeArchitect for LPC932 uses since Im designing the pcb.&lt;/i&gt;&lt;br /&gt;
No such thing&lt;br /&gt;
the DB9 connect to the UART which get the data IN, the SPI pins connect to the socket which get the data out.  what&amp;#39;s between is code.&lt;br /&gt;
&lt;br /&gt;
Erik&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/154932?ContentTypeID=1</link><pubDate>Thu, 01 Dec 2005 09:30:13 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:7ded267d-9bdc-41b0-8e8f-16720e93328b</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Thats ok Dan, I didnt explain the problem very well in the first place.&lt;br /&gt;
Im confused by what Eric said.&lt;br /&gt;
The Keil MCB900 board and LPC93x are for Philips products. I followed the logical steps to choose a board for the nrf9e5 chip and came up with MCBX51 EVALUATION BOARD $ 295.00  Different board - very different price.&lt;br /&gt;
Actually all that I need is the DB9 to spi buss connections that CodeArchitect for LPC932 uses since Im designing the pcb.&lt;br /&gt;
Could you please elaborate ?&lt;br /&gt;
Finally, &amp;quot;FWIW, I happen to have used TD&amp;lt;-&amp;gt;SCK, DTR&amp;lt;-&amp;gt;MOSI, and CTS&amp;lt;-&amp;gt;MISO through RS-232 transceivers for some bit-banged applications. &amp;quot; Isnt this going to depend on the software ?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/154441?ContentTypeID=1</link><pubDate>Wed, 30 Nov 2005 14:57:46 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:896a6e6e-cc94-4e96-8237-aa4343a61d0b</guid><dc:creator>Drew Davis</dc:creator><description>&lt;p&gt;&lt;i&gt;FWIW, I happen to have used TD&amp;lt;-&amp;gt;SCK, DTR&amp;lt;-&amp;gt;MOSI, and CTS&amp;lt;-&amp;gt;MISO through RS-232 transceivers for some bit-banged applications. &lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
That&amp;#39;s a thought.  We&amp;#39;ve used the parallel port on a PC to bitbang a SPI bus, but this sounds like a cleaner set of connectors and cables.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/153894?ContentTypeID=1</link><pubDate>Wed, 30 Nov 2005 14:00:08 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:32760e97-dbe4-4ca7-b1c5-2681f3c6fd67</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;John,&lt;br /&gt;
&lt;br /&gt;
Please accept my profound apologies for confusing the issue.  I had taken you to mean that you wanted to program the EEPROM in-circuit from the PC serial port without extra fixturing.&lt;br /&gt;
&lt;br /&gt;
Sorry,&lt;br /&gt;
&lt;br /&gt;
/Dan&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/153265?ContentTypeID=1</link><pubDate>Wed, 30 Nov 2005 13:29:54 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:d2b89826-23eb-47d8-93a6-13eae4b097f3</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Thanks, dat be worth lookin into fer sure.&lt;br /&gt;
which I will do almost immediately !&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/152558?ContentTypeID=1</link><pubDate>Wed, 30 Nov 2005 13:26:09 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:fb2ba487-775a-4c8a-a5bc-0813720d1e5a</guid><dc:creator>erik  malund</dc:creator><description>&lt;p&gt;dead simple&lt;br /&gt;
&lt;br /&gt;
If you buy a Keil MCB900 board (&amp;lt;$50 at discount) and connect it to a zif socket for the eeprom on the patchboard.&lt;br /&gt;
&lt;br /&gt;
The LPC93x has HW SPI and a UART (the MCB900 even has the DB9 socket and the transciever on it).&lt;br /&gt;
&lt;br /&gt;
Then you get most of the code generated by using the CodeArchitect for LPC932, free from &lt;a href="http://www.esacademy.com" target="_blank"&gt;http://www.esacademy.com&lt;/a&gt;.&lt;br /&gt;
&lt;br /&gt;
So, &amp;lt;$50, a ZIF socket and a day of coding&lt;br /&gt;
&lt;br /&gt;
How dat?&lt;br /&gt;
&lt;br /&gt;
Erik&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/147991?ContentTypeID=1</link><pubDate>Wed, 30 Nov 2005 12:27:14 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:a591223e-168e-404c-98fe-8e072d948371</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Either way it appears to be a dead end for me. He wants $995 for the schematic. Hell, thats more than I&amp;#39;m planning on spending on putting this thing into prototype production.&lt;br /&gt;
Was gonna post this at the 8052.com but Ill run it up here:&lt;br /&gt;
&lt;br /&gt;
Here&amp;#39;s my problem:&lt;br /&gt;
I&amp;#39;m designing the hardware that allows program hex code to be loaded to an external eeprom&lt;br /&gt;
(25230 type) that is used in conjunction with a Nordic nRF9E5 chip. The nRF9E5 contains an&lt;br /&gt;
8051 type mpu and requires it&amp;#39;s program code to reside in the external eeprom.&lt;br /&gt;
The eeprom uses the SPI bus.&lt;br /&gt;
I want to use a windows based pc serial port. Actuall the usb but a 232 to usb translator&lt;br /&gt;
 chip and virtual comm port. But that part is understood.&lt;br /&gt;
So, since there is no standard for this type of thing, just which db9 pins connect to sck, mosi, miso&lt;br /&gt;
is determined by the software that loads the hex.&lt;br /&gt;
So far Ive only found a nice windows app that costs $995 USD. Out of the question.&lt;br /&gt;
Any help will be greatly appreciated.&lt;br /&gt;
One other thing. Has anyone  any familiarity with dss hacking a few years back ?&lt;br /&gt;
As I recall the hu card contained an 8051 and 8k eeprom and was programmed via an iso7816 programmer thru the serial port. Wasnt this really an SPI interface ?&lt;br /&gt;
john&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/147292?ContentTypeID=1</link><pubDate>Wed, 30 Nov 2005 10:15:41 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:a6e6fcd3-0be2-4db8-aeb0-3cd0b9a68b02</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;Perhaps we&amp;#39;re supposed to read between the lines and infer that WinBurn does not &lt;b&gt;directly&lt;/b&gt; program, but instead talks to the MCU for &lt;b&gt;it&lt;/b&gt; to perform the programming on behalf of WinBurn.  That would be a pity.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/145984?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 19:29:46 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:64faaf06-e467-433c-92a7-4401e654d648</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Installed winburn - looks good so far but I dont see mention of the db9 to spi connection yet.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/144100?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 18:14:55 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:da968680-0767-4b5f-9dc9-7a85d4237c59</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;&lt;i&gt;&amp;quot;It&amp;#39;s good meeting you.&amp;quot;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
Likewise.&lt;br /&gt;
&lt;br /&gt;
&lt;i&gt;&amp;quot;I&amp;#39;ll let you know how it goes.&amp;quot;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
Yes, please do.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/141588?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 17:44:39 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:babbeb3c-da9b-452e-a0b7-6b761d9e43a3</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;It&amp;#39;s good meeting you. I&amp;#39;ll let you know how it goes.&lt;br /&gt;
john&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/138148?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 17:05:03 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:c29e8691-9cc5-4dc9-99e0-5b346596d202</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;&lt;i&gt;&amp;quot;Are you working with the Nordic chip ?&amp;quot;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
No, but I have developed firmware for numerous &amp;quot;low end&amp;quot; RF systems and a few &amp;quot;high end&amp;quot; RF systems.  The Nordic part looks like an interesting device at a glance.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/130008?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 16:51:30 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:01234462-9b89-4279-916e-c963e7a573c4</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;Thanks, winburn looks like a good place to start reading. Are you working with the Nordic chip ? The EVboard uses the usb but probably thru a 232 to usb translator chip. They dont seem inclined to release the sch files for their programming dongle.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/123060?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 16:41:13 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:585fe595-222b-4b17-a764-af431bbc027d</guid><dc:creator>Karl Hamsher</dc:creator><description>&lt;p&gt;&lt;i&gt;&amp;quot;What Im doing is designing the hardware that plugs into a pc serial port and connects to the external 25xx320 eeprom of a nrf9e5 chip.&amp;quot;&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
Ah, your queries make much more sense now that I understand the context.  So now a few comments:&lt;br /&gt;
&lt;ul&gt;&lt;li&gt;I would be very surprised indeed if Keil&amp;#39;s software supported code download (programming) of the EEPROM, but I&amp;#39;ll let Keil address that issue.&lt;/li&gt;
&lt;li&gt;Keil&amp;#39;s Device Database &lt;a href="http://www.keil.com/dd/chip/3705.htm"&gt;http://www.keil.com/dd/chip/3705.htm&lt;/a&gt; shows that &lt;a href="http://www.microware-tech.com/winburn.html" target="_blank"&gt;http://www.microware-tech.com/winburn.html&lt;/a&gt; may be a useful programming utility and this utility probably dictates DB9&amp;lt;-&amp;gt;SPI connections.&lt;/li&gt;
&lt;li&gt;Nordic Semiconductor&amp;#39;s website has a number of appnotes and development tools for this device with example code for programming the EEPROM.&lt;/li&gt;
&lt;li&gt;If you have not already done so, I would suggest downloading the nRF9E5 Evaluation Board User&amp;#39;s Manual which includes a schematic, although it looks like the programming interface is via USB, not RS-232.&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI</title><link>https://community.arm.com/thread/111827?ContentTypeID=1</link><pubDate>Tue, 29 Nov 2005 15:48:04 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:98091d28-966a-49a9-b0d4-5497db087b71</guid><dc:creator>john robinson</dc:creator><description>&lt;p&gt;I&amp;#39;m a hardware guy. What Im doing is designing the hardware that plugs into a pc serial port and connects to the external 25xx320 eeprom of a nrf9e5 chip.&lt;br /&gt;
And dont know a whole lot about software.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>