ZBasic Forum

Tony, Thanks for the reply. Do you really mean NO MORE THAN (I.E. less than) ten years? If so, lots of stuff ought to fit the bill. I am currently 72 years old and doubt I will still be spry enough to want to continue past ten years. :) What do you need in the way of I/O pins, memory, processing pow...

Back in the early '90s I designed, build and successfully marketed a product with an embedded micro. I discontinued the product around 1997 because some of the ICs used in the product became obsolete. However, I recently found out that the micro was still being sold in its original design. I have re...

Don, Thanks for the quick response. Along the same lines, I am doing a system that has a 3.3V I2C device and I am using a SparkFun Break-out-board, BOB-08745 level converter to convert from the 3.3V device's SDA/SCL lines to 5V for a ZX. Which side do I put the pull-ups - on the 3.3V or the 5V side?...

I have two devices of the same kind with two different addresses connected to my micro's I2C SDA/SCL ports. Does each device need separate pullup resistors? I have two PCF8574 I2C port expanders attached to a ZX-24's
I2C pins 11 and 12 that are jumpered for different addresses.

Vic

spamiam, Thanks for the reply. As I noted in my OP, I am able to wake up the -52 over the comm link. This is done by sending a space (HEX20) character to the unit as the first character. Since I can do this, I believe the comms work. Sending the space character sets the baud rate on the link. I am u...

I know that this is a far-out request, but I am getting desperate. I have a legacy product that uses a Micromint BCC52 controller. I have not sold one of these products for at least 7 years. I got a call from a user that his unit, purchased in 1994, did not start and wondered if I could help him out...

Well, I ran the FTClean utility and that seemed to do the trick. I was able to install the converter drivers and the system recognizes the converter. I placed it on to COM2 from the installed COM5 and I guess things are ready to go. I want to thank everyone for their suggestions. I would never have ...

cerickson, Thanks for answering my plea! I mentioned that in my OP that I have tested the ports by plugging in a Flash drive into them and the computer sees these devices. I have also used several cables with the converter just in case a cable was bad. None of these potential problem areas seem bad....

Don,

Neither case worked.

Vic

Don,

When I do this, the system only displays the COM1 standard serial port on the PCI bus. The driver is provided by Microsoft. The scan fails to detect the USB Converter.

Vic

I forgot to mention that both computers run WXP SP3 and all updates.

Vic

I wanted to use a USB-TTL Serial Converter on another desktop. I downloaded the FTDI drivers and got things organized to install. When I plugged the Converter into a USB port the LEDs flashed on the board but nothing happened on the PC. I had expected the "Found New Hardware" message to co...

I have several zx-24a devices left that I would like to use for system development to save a few bucks. Is this possible? I have not used them for a year or so. Can I still update the firmware?

Any enlightenment will be appreciated.

Vic

Don,

Thanks for the quick reply and for clearing up the sub-address issue.

Before starting the DO-LOOP in your example, I assume that I need to call
OpenI2C() and then when I break out of the loop ( I have a While (condition)/Wend type), I should call I2CStop().

Vic

I have two I2c devices, PCF8574 I/O expanders attached to a ZX-24. One has a slave address of &H000 and the other &H001. I wish to read one then read to other, wait a bit and then read them again in a loop. How do I structure the I2c cycle code-wise. I am using the hardware I2C bus. I.m not ...