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Reply-To: "Jeff Stout"
From: "Jeff Stout"
Subject: Re: Levels of RTS and CTS
Date: Tue, 22 Oct 2002 07:14:38 -0500
X-Newsreader: Microsoft Outlook Express 5.00.2615.200
The scenario you described is certainly possible; but so are
a few others. The data sheet for your "bluetooth chip from
Ericsson" should describe exactly what the chip expects.
Roland Bengtsson wrote in message
> We are 3 students that are going to communicate with a bluetooth chip
> from Ericsson from an ARM cpu.
> Assuming that the chip follows the RS232 standard what are the levels
> for RTS and CTS?
> Sender Receiver
> ----- --------
> RTS | ------------------ | CTS CTS and RTS are
> CTS | ------------------ | RTS
> ----- --------
> We assumed active high that means:
> 1. The sender raise RTS 0 -> 1, and want to send
> 2. The receiver sees this on the CTS and raise the RTS 0 -> 1.
> 3. The sender sees this on the CTS and start to send.
> 4. If the buffer gets full on the receiver it sets the RTS 1 -> 0.
> 5. The sender sees this on the CTS and stop the sending.
> 6. The recievers buffer is empty again and it raise the RTS 0 -> 1
> 7. The sender now starts send as CTS is 1.
> 8. When the transfer is finished both sender and receiver sets RTS and
> CTS to 0.
> Is this the correct?
> Best regards Roland
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