http://tech.groups.yahoo.com/group/basicx/ Discussion list for the BasicX family of microcontroller chips Fri, 13 Nov 2009 14:13:01 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23223 http://tech.groups.yahoo.com/group/basicx/message/23223 Hello fellows The problem was finnally solved as soon as I called Maxim's support line. According to their Typical Operation Circuit, I had my supply connected Tue, 10 Nov 2009 23:11:50 GMT rosarite@... http://tech.groups.yahoo.com/group/basicx/message/23222 http://tech.groups.yahoo.com/group/basicx/message/23222 Hi, Suggestion Do a print of the command data to see if your are sending command a good command. Set the clock low before execute the CE high per DS1302 Tue, 10 Nov 2009 21:47:21 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23221 http://tech.groups.yahoo.com/group/basicx/message/23221 Do you think I should configure the IO pin as bxInputTristate using Putpin? Tue, 10 Nov 2009 21:38:35 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23220 http://tech.groups.yahoo.com/group/basicx/message/23220 I tried want you suggested: instead of MISO and MOSI pins, I'm only using one pin connected to IO pin of DS1302... But the result is the same: "ctrl_reg: 255" Tue, 10 Nov 2009 18:05:17 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23219 http://tech.groups.yahoo.com/group/basicx/message/23219 ... Then the output pin will hold the input pin low, won't it? Try disconnecting one of the pins and use the same pin for input and output. Tom Tue, 10 Nov 2009 17:59:00 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23218 http://tech.groups.yahoo.com/group/basicx/message/23218 You can't be far from success. Here is a Cubloc implementation that is close to Basic-X code: http://www.cubloc.com/download/etc/app_ds1302.pdf Tom Tue, 10 Nov 2009 17:58:44 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23217 http://tech.groups.yahoo.com/group/basicx/message/23217 yes, both pins are connected to IO pin of DS1302 Tue, 10 Nov 2009 17:55:16 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23216 http://tech.groups.yahoo.com/group/basicx/message/23216 ... Are these two pins both connected to the DS1302 I/O pin? Tom Tue, 10 Nov 2009 17:28:53 GMT David Sousa Mendes http://tech.groups.yahoo.com/group/basicx/message/23215 http://tech.groups.yahoo.com/group/basicx/message/23215 Hello Tom, I tried the code that you suggested but with no results... At the moment I'm just trying to read a register where the first 7 bits are forced to Tue, 10 Nov 2009 00:43:44 GMT Tom Becker http://tech.groups.yahoo.com/group/basicx/message/23214 http://tech.groups.yahoo.com/group/basicx/message/23214 Here is an exploit of the Basic-X register.RTCTick implementation which permits using Timer(), usually limited to a 24-hour period, to measure beyond 46-day 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.