http://tech.groups.yahoo.com/group/basicx/ Discussion list for the BasicX family of microcontroller chips Thu, 05 Nov 2009 23:10:52 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23212 http://tech.groups.yahoo.com/group/basicx/message/23212 ... Perfect. I've never used it, but that's what you need if you use ShiftIn/Out. Tom Thu, 05 Nov 2009 22:52:55 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23211 http://tech.groups.yahoo.com/group/basicx/message/23211 I'll give it a try... Meanwhile I came across the function FlipBits that, apparently reverses the bit order automatically... Have you heard about it? David Thu, 05 Nov 2009 17:36:31 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23210 http://tech.groups.yahoo.com/group/basicx/message/23210 Yes, you'll need to control CE via PutPin(). On a quick read of the DS1302 single-byte read/write specs, it looks like you need to raise CE, then write a Thu, 05 Nov 2009 16:24:46 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23209 http://tech.groups.yahoo.com/group/basicx/message/23209 Unfortunatly my DS1305 did not yet arrive and so I was trying to solve my problem with a DS1302... What is opinion? 1- Is it much hard work than with a SPI Thu, 05 Nov 2009 15:50:08 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23208 http://tech.groups.yahoo.com/group/basicx/message/23208 ... Ah; you did say 3-wire and, you're right, that's not an SPI interface device. You'd have better success, I think, using ShiftIn() and ShiftOut() with it. Thu, 05 Nov 2009 12:40:45 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23207 http://tech.groups.yahoo.com/group/basicx/message/23207 No, sorry, the CORRECT part number is maxim's DS1302: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2685 David M. Thu, 05 Nov 2009 11:51:01 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23206 http://tech.groups.yahoo.com/group/basicx/message/23206 ... Are we looking at the same part? The Maxim Max1302 shows Din, Dout, SClk, and /CS. http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4746 Tom Thu, 05 Nov 2009 10:27:06 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23205 http://tech.groups.yahoo.com/group/basicx/message/23205 But on the max1302 side I only have the following pins for communication: SCLK, I/O and CE What should I connect to I/O? Both MISO and MOSI? Without external Wed, 04 Nov 2009 17:50:02 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23204 http://tech.groups.yahoo.com/group/basicx/message/23204 ... 2 - Should I still use OpenSPI and SPICmd commands? If, by "3-wire protocol" you mean SPI, if you are currently successful with the max146, I see no reason Wed, 04 Nov 2009 16:29:12 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23203 http://tech.groups.yahoo.com/group/basicx/message/23203 Thanx, Tom! My next step is to try to configure the BX to communicate with max1302 via 3-wire protocol... 1 - What should I change on my pin configuration on Tue, 03 Nov 2009 20:29:39 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23202 http://tech.groups.yahoo.com/group/basicx/message/23202 ... OpenSPI will configure the /CS pin high. Its state before that should be either untouched (since a processor Reset sets all pins to InputTristate) or, if Tue, 03 Nov 2009 16:33:44 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23200 http://tech.groups.yahoo.com/group/basicx/message/23200 And yet another question: In my code: Call SPICmd(1,1,sent_bytes(1),1,received_bytes(1)) Call SPICmd(1,1,sent_bytes(2),1,received_bytes(2)) Call Tue, 03 Nov 2009 15:40:13 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23199 http://tech.groups.yahoo.com/group/basicx/message/23199 Hello Eventough it still needs some tunning, I'm being able to receive valuable data from the max146... One question: how should the CS pin be configured? Fri, 30 Oct 2009 18:32:37 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23198 http://tech.groups.yahoo.com/group/basicx/message/23198 Looking quickly, I don't see an obvious problem. I posted a simple two-transistor SPI loopback drawing (actually, a tristate non-inverting buffer, enabled by Fri, 30 Oct 2009 17:09:16 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23197 http://tech.groups.yahoo.com/group/basicx/message/23197 Sorry, Tom, didn't give you all the code to make it simpler... here goes: Option Explicit public Channel As Byte Public Sub Main() call abre_spi() call