From: Fisher, A. <Apr...@gd...> - 2006-12-05 18:35:19
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The documentation refers to 2 x 3v TTL level serial ports on the Audiostix board. After looking at the schematics and documentation, I'm a little confused at to which ones they are. Looks like we have access to all of the UARTs; FFUART, BTUART, HWUART and STUART. So my question is to which ones are they referring to? If I had to guess I would guess the FFUART and the HWUART. If I am right then a question comes up regarding the FFUART. The FFUART pins GPI0 34 and 39 that are used for the RX and TX respectively are also used as the chip select for the MMC controller. Which in our case we are using. We are using the Connex 400xm with the netMMC and AUDIOSTIX. So does this mean I really only have access to one of the UARTs being the HWUART? Hope you can help. Thanks. April Fisher Hardware Design General Dynamics Canada (403) 295-5279 The information contained in this e-mail message is PRIVATE. It may = contain confidential information and may be legally privileged. It is = intended for the exclusive use of the addressee(s). If you are not the = intended recipient, you are hereby notified that any dissemination, = distribution or reproduction of this communication is strictly = prohibited. If the intended recipient(s) cannot be reached or if a = transmission problem has occurred, please notify the sender immediately = by return e-mail and destroy all copies of this message.=20 Thank you.=20 |
From: Dave H. <dhy...@gm...> - 2006-12-05 19:31:11
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Hi April, > The documentation refers to 2 x 3v TTL level serial ports on the Audiostix > board. After looking at the schematics and documentation, I'm a little > confused at to which ones they are. Looks like we have access to all of the > UARTs; FFUART, BTUART, HWUART and STUART. So my question is to which ones > are they referring to? Actually, all of them are available on the newer gumstix. It make also be that the original audiostix only had two available, but the audiostix2 has all 4 available and the specs never got updated. But just because the pins are available doesn't mean they're usable. So you can't use BTUART on the audiostix2 if you're using it to talk to a bluetooth module. You can't use HWUART if you're using any of the gumstix connex daughtercards. > If I had to guess I would guess the FFUART and the HWUART. If I am right > then a question comes up regarding the FFUART. The FFUART pins GPI0 34 and > 39 that are used for the RX and TX respectively are also used as the chip > select for the MMC controller. Which in our case we are using. We are > using the Connex 400xm with the netMMC and AUDIOSTIX. So does this mean I > really only have access to one of the UARTs being the HWUART? The FFUART is available with all of the "normal" connex boards. The HWUART pins aren't (by that I mean that they're being used for other things). Are you talking about a custom board that you've built with an MMC on it? Or something else? -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ |