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Discussion Groups | 68HC12 | XIRQ interrupt on pin's falling/rising edges: Is it possible?
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
Re: USB for D60A? - James M. Knox - Jul 16 1:00:00 2003
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Oliver, Andrei >adding an extra microcontroller (e.g. the HC908JB8 as used in the >reference design, see also http://hc08web.de/usb08/) is good if you also >want to be able to do "funny" things, such as data processing etc etc > >If the bandwidth of the Low-Speed-USB device class is not enough (one can >compare it with a 9600 Baud SCI link), I suggest using a serial/USB >converter like the FTDI chip. That FTDI looks very promising. The parts count all total may be about the same for both solutions, or maybe even higher for the FTDI - OTOH, the FTDI solution gets us around an additional software item. Data rates at the moment are not high. Something like 19.2kb is fine. However, our D60A is running it's heart out in certain modes and we could not add a lot of software to it to emulate the USB interface, hence the idea of a coprocessor. One thing I could not find. I got zero hits on the FTDI FT232BM or older FT8U232AM when I ran it through my pricing software. Nor did I find pricing info on the FTDI site. Got any idea about small qty pricing? [And availability?] jmk ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- |
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XIRQ interrupt on pin's falling/rising edges: Is it possible? - lenux22 - Jul 16 6:44:00 2003
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In HSC12-fammily controllers XIRQ interrupt occurs then XIRQ pin is active low. Is any way to detected XIRQ interrupt by falling/rising edges on dedicated pin? |
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USB for D60A? - James M. Knox - Jul 16 11:28:00 2003
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A customer wants us to replace the serial port on our D60A-based product with USB. It looks to me like maybe the simplest solution will be to add the Motorola RD68HC908USB chip to the board, and just have the D60A and the 908 talk over the SPI or some such. Has anyone used this method, or have a better suggestion? tnx, jmk ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- |
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Re: USB for D60A? - Oliver Thamm - Jul 16 11:45:00 2003
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Hi jmk, adding an extra microcontroller (e.g. the HC908JB8 as used in the reference design, see also http://hc08web.de/usb08/) is good if you also want to be able to do "funny" things, such as data processing etc etc If the bandwidth of the Low-Speed-USB device class is not enough (one can compare it with a 9600 Baud SCI link), I suggest using a serial/USB converter like the FTDI chip. A reference implementation can be found in the HCS12 ACP reference design, see http://hc12web.de/acprd/ Happy USBing! Oliver On Wed, 16 Jul 2003 11:28:55 -0500 "James M. Knox" <> wrote: > A customer wants us to replace the serial port on our D60A-based product > with USB. It looks to me like maybe the simplest solution will be to add > the Motorola RD68HC908USB chip to the board, and just have the D60A and the > 908 talk over the SPI or some such. > > Has anyone used this method, or have a better suggestion? > > tnx, jmk > > ----------------------------------------------- > James M. Knox > TriSoft ph 512-385-0316 > 1109-A Shady Lane fax 512-366-4331 > Austin, Tx 78721 > ----------------------------------------------- ----------------------------------------------------------- *** The USB08 Project Page *** http://hc08web.de/usb08/ *** ----------------------------------------------------------- |
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Re: USB for D60A? - Andrei Chichak - Jul 16 11:56:00 2003
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At 11:28 AM 7/16/2003 -0500, you wrote: >A customer wants us to replace the serial port on our D60A-based product >with USB. It looks to me like maybe the simplest solution will be to add >the Motorola RD68HC908USB chip to the board, and just have the D60A and the >908 talk over the SPI or some such. > >Has anyone used this method, or have a better suggestion? > > tnx, jmk How about something like the FTDI FT8U232AM chip? It has USB on one side and RS232 (RX/TX/RTS/CTS/DTR/DSR/DCD/RI) on the other side. See www.ftdichip.com for more info. Andrei >----------------------------------------------- >James M. Knox >TriSoft ph 512-385-0316 >1109-A Shady Lane fax 512-366-4331 >Austin, Tx 78721 >----------------------------------------------- > >-------------------------------------------------------- >To unsubscribe from this group, send an email to: >To learn more about Motorola Microcontrollers, please visit >http://www.motorola.com/mcu |
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Re: USB for D60A? - Andrei Chichak - Jul 16 13:41:00 2003
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www.saelig.com for the USA www.kotrade.ca for Canada (hooray!!) check http://www.ftdichip.com/FTDisti.htm for the rest of the world (you are going to have to look it up yourself until you start buying our beef again ;-) Andrei At 01:00 PM 7/16/2003 +0700, you wrote: >Oliver, Andrei > > >adding an extra microcontroller (e.g. the HC908JB8 as used in the > >reference design, see also http://hc08web.de/usb08/) is good if you also > >want to be able to do "funny" things, such as data processing etc etc > > > >If the bandwidth of the Low-Speed-USB device class is not enough (one can > >compare it with a 9600 Baud SCI link), I suggest using a serial/USB > >converter like the FTDI chip. > >That FTDI looks very promising. The parts count all total may be about the >same for both solutions, or maybe even higher for the FTDI - OTOH, the FTDI >solution gets us around an additional software item. > >Data rates at the moment are not high. Something like 19.2kb is >fine. However, our D60A is running it's heart out in certain modes and we >could not add a lot of software to it to emulate the USB interface, hence >the idea of a coprocessor. > >One thing I could not find. I got zero hits on the FTDI FT232BM or older >FT8U232AM when I ran it through my pricing software. Nor did I find >pricing info on the FTDI site. Got any idea about small qty pricing? [And >availability?] > > jmk > >----------------------------------------------- >James M. Knox >TriSoft ph 512-385-0316 >1109-A Shady Lane fax 512-366-4331 >Austin, Tx 78721 >----------------------------------------------- > >-------------------------------------------------------- >To unsubscribe from this group, send an email to: >To learn more about Motorola Microcontrollers, please visit >http://www.motorola.com/mcu |
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Re: USB for D60A? - Stephen Trier - Jul 16 13:47:00 2003
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James, Saelig Company (www.saelig.com) lists the FT232BM for $5.75 qty 1 and about half that in quantity. They say they ship small quantities from stock. Large quantities may have a 10 week lead time. Stephen -- Stephen Trier Technical Development Lab Cleveland FES Center / CWRU / KG8IH |
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Re: USB for D60A? - Author Unknown - Jul 16 15:38:00 2003
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In a message dated 7/16/03 12:30:09 PM Eastern Daylight Time, writes: have a better suggestion? Just charge him $25 more and include a USB to serial adapter cable. If he doesnt want to buy it, no prob [Non-text portions of this message have been removed] |
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Re: USB for D60A? - Ed Taylor - Jul 16 15:54:00 2003
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hi bob: i've never been able to get a usb to rs-232 adaptor to work properly. can you recommend one that actually works? i've tried about 4 different ones with little (if any) luck. regards, ed ----- Original Message ----- From: <> To: <> Sent: Wednesday, July 16, 2003 2:38 PM Subject: Re: [68HC12] USB for D60A? > In a message dated 7/16/03 12:30:09 PM Eastern Daylight Time, > writes: > have a better suggestion? > Just charge him $25 more and include a USB to serial adapter cable. If he > doesnt want to buy it, no prob > [Non-text portions of this message have been removed] > > -------------------------------------------------------- > To unsubscribe from this group, send an email to: > To learn more about Motorola Microcontrollers, please visit > http://www.motorola.com/mcu |
Stellaris® MCU Family: New Parts, New Package, New Price.
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Re: USB for D60A? - James M. Knox - Jul 16 16:05:00 2003
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At 04:38 PM 7/16/2003 -0400, you wrote: >Just charge him $25 more and include a USB to serial adapter cable. If he >doesnt want to buy it, no prob We've had a lot of problem with those. Our output (Maxim IC) conforms to the RS-232 spec and we have never had it fail to work fine with a desktop computer. But a lot of laptops with the USB-serial adapters exhibit problems - especially software related problems. Besides, we get paid to develop things. Customer wants to pay for USB... Customer *gets* USB. <G> jmk ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- |
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Stellaris® MCU Family: New Parts, New Package, New Price.
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Re: USB for D60A? - Andrei Chichak - Jul 16 16:23:00 2003
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>Besides, we get paid to develop things. Customer wants to pay for USB... >Customer *gets* USB. <G> > > jmk Right on! If he wants to pay $200 extra for a $15 USB dongle that is bolted into the box...it is your DUTY to take his money. A |
Stellaris® MCU Family: New Parts, New Package, New Price.
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