The idea for this project is aimed to be, along with many other uses, to enable programming of otherwise non-front-panel-programmable radios with existing repeater controllers using DTMF. Also, there are more than just Maxtracs, and GM300 that could be used with this code. Presently, any radio with a PLL that follows the data type set of the MC145158 or MC145159, can be used. The code will then be allowed to branch out to other PLLs enabling the list of radios to grow. It will then be possible, with some hardware mods, to turn an old analog bag phone into a 900MHz repeater. That's another project in the works, haha. I've already figured out how the RF sections of the Nokia made Radio Shack branded bag phones work. Front panel programmable radios, should be in cars and home stations, not at repeater sites, for a multitude of reasons. The code for the GE MVS is here. I'm learning about git, so there will be some bumps a long the way. So, you may have to do some digging around my account. https://github.com/Project23D/Arduino-Radio-Control/blob/Motorola-VHF/U HF-MC145158/GE-MVS_PLL-control.ino as soon as I figure out git, I'll upload the original code published, plus the Maxtrac PLL variation... As well as other code variations. ~Benjamin, KB9LFZ On Tue, 2018-01-09 at 22:56 -0600, Benjamin Naber wrote:
For those of you who are knowledgeable in the code of Arduino:
I've begun a project that I jumped into the the *very* deep end, while knowing just barely how to swim.
I've managed to get the radio to tune to a frequency that I want, but very flaky at best when it comes to tuning well within the limits of thr VCO; the arduino freezes every now and then, and quite frankly I am not working with (cough, not understanding), the existing code.
In a nutshell, what I am doing is breaking the MC145159 control lines from the GE MVS CPU, and soldering in a few wires, plus a ground, to the base pins of the transistors that ulitamtely lead to the CLK,ENB, and DATA pins of the PLL.
The reason why I am doing this is to enable free tuning of the radio without the need to program the radio using normal computer programming methods, ie, a cable, and a special program that is hard to come by, as well as must run this program on older hardware
Given that Arduinos can be programmed from just about anything, this enabled on the fly on at least, on site programming of the radio. I am working towards enabling the use of these radios, and a couple others to be controlled by repeater controllers, and allstarlink nodes using kenwood data command set. Or whatever it is.
Boiled down, this will enable good, inexpensive priced commercial radios to continue life; anyone who knows how to solder and program an Arduino can now use a commercial for a repeater VHF/UHF remote base, Allstarlink, IRLP, Echostink node radio, scanner, whatever.
With the significantly better RX fronts ends on these radios, cleaner TX, these will significantly outperform any chinese radio attached to any RoIP node.
--------- Here is where I am stuck:
The MC145159 PLL wants the tuning data sent as follows: 14 bits for R counter 10 bits for N counter 7 bits for A counter 1 high bit for control.
Totaling 32 bits. The current code, posted immediately below does not seem to allow this:
emit_byte (0x14); emit_byte (0x01); /* Send "(n << 8)|(a << 1)", 24 bits, MSB first, LSB always zero */ //emit_byte (n >> 2); emit_byte ((n >> 8 ) & 0xFF); /* N high byte */ emit_byte (n & 0xFF); /* N low byte */ //emit_byte (a & 0b1); // send only seven bits? emit_byte (a << 1); /* A and LSB 0 */ //emit_byte (0x01 << 7); // send only one HIGH bit? pulse_le(); /* Latch it */
the "//" are my futile attempts to work around this, and leave commented out so I know what I *think* did not work.
I've also the following to form the four bytes being sent, MSB of each counter first, control bit last:
emit_byte ((r) & 0xFF); /* send first eight bits of r counter*/ emit_byte (((r & 0xFF) & n) & 0xFF); /* send last 6 bits of r counter, then send first two bits of n counter */ emit_byte ((n & 0xFF) & 0xFF); /* send last eight bits of n counter */ emit_byte (((a) & 0xFF) & 0x01 << 7); /* send seven bits for a counter, and one HIGH bit for control bit */
What does work now to test to make sure this project is even feasible:
in the void setup() section
.... emit_byte (0b00101000); // first eight bits of R counter emit_byte (0b00000001); // last 6 bits of R counter, first two bits of N counter emit_byte (0b00110011); // last eight bits of N counter emit_byte (0b10001001); // 7 bits for A counter, last control bit pulse_le();
.......
the above test code does work to successfully set the radio to 5 KHz step, and program the N + A counters to 151.820MHz + 45MHz
Sorry it was long, However the more info you have to see what is going on, the less guessing you have to do.
~Benjamin, KB9LFZ _______________________________________________ App_rpt-users mailing list App_rpt-users@lists.allstarlink.org http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
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