Matrix user forums

Just added your suggestion and as always, You are bang on the money!!

Many Thanks

James

Hi All, I've written a macro now so you can pass the channel number you want to read and it will return the reading of that channel. Took me a little while, with moving house and looking after children over half term! I've tested it and it works great. Saves a lot of time and memory space! Regards J...

Hi Benj

It works!!

I have been banging my head against the wall for ages!!. I just need to sit down and understand what you have done differently. I notice you have done the comms in one send char as I did it in two as suggested in the datasheet.

Many Thanks

James

Has anyone got any help or advice to give?

This chip is driving me up the wall!!! I coming to the mind of finding a different ADC.

Regards

James

More progress but still not quite there!!! I've inverted the MSB using some code off the forum and altered the chars sent to the SPI. It works much better but still can't fathom the last bit, Any ideas ???

Cheers

James

I've made some progress. The new chart is giving a more stable reading but the MSB appears to be inverted. When I increment the pot I get the following on the MSB :- 10000000 128 01000000 64 11000000 192 00100000 32 10100000 160 01100000 96 11100000 224 If the bits were the other way round it would ...

Hello all, I'm currently trying to get data out of an MCP3208 8 channel SPI DAC. I can set the address for each channel and get data back but it is meaningless! I've attached a file of what I'm doing. From the datasheet I've ascertained that on reply from the DAC I get the MSB and then the LSB (page...

Hi Jordy,

I have just started to try and use the MCP3208 and wondered if you could send me the tutorial previously mentioned in this thread.

Regards

James

Rapid electrinics do a product called a tea clipper.

Part nos 43-0096 and 43-0097

Sounds like it fits with what you are trying to do!

Regards

JAW

Hi Jay Dee,

I've found an application note:-

http://www.ti.com/lit/an/slva267a/slva267a.pdf

Hope this helps !!

Regards

JAW

Hello Jay Dee,

Have you looked at the TLC5940 made by Texas Instruments? 16 CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL. Available on eBay.

Regards

JAW

Hi Benj,

I want to drop the data rate lower than your minimum 125 Kbs. I know this involves altering the crystal connected to the CAN chip but what about in terms of software alteration?

Regards

JAW

Hi PUTS_JO,

One thing I've experienced with bread board is that it suffers from parasitic capacitance. This could be stopping the crystal from going into oscillation. Hence stopping your circuit from functioning.

Regards

JAW

Hi Guys, How hard would it be to alter the CAN module so I can use lower data rates for longer distances ? I know from reading the datasheet that the crystal on the CAN chip would need to be altered. Software wise how hard would this be? I know nothing aboutC or how you write your modules but I have...

Hi Benj,

I have not had time to test yet but as soon as I do I'll let you know.

Thanks

JAW

Hi Benj,

I could really use the following :-


//char Erase_Disk(void)
//char Format_Disk(void)

Regards

JAW

Hi Benj,

I have started to use the SD Card quite a lot and would really like to see you implement the 32 bit option, Thus giving more scope to what can be placed on the card.

Regards

JAW

Thanks Medelec that's working perfectly now.

Many Thanks

James

Hi Benj, Thank you for your reply. I'm trying to go down the route of converting the decimal value to a bcd code. So far I've found a previous post but can't get it to workk correctly :- dec_t = dec/10 dec_u = dec MOD 10 bcd = (dec_u << 4) bcd = bcd + dec_u dec is the original decimal value dec_t an...

I'm having trouble being able to convert to decimal values into a hex value to send to a dallas time chip. I'm trying to write code for a clock with a menu enabelling you to change the time. The display shows the decimal value but I can't get my head round converting to hex and then sending down the...

Hi Ksor.

To remove the MCLR function from the pin you need to turn it off in the advanced section of the chip config page.

e.g. Chip > Configure > Switch to expert config page.

Then disable the Master Clear Enable.

Regards

Jim

Hi Mikat,

One quick thing to try is to copy the program and try running it off your desktop. I have had similar problems with the compiler not liking network drives.

Regards

James

Hi Steve,

Just went to Beta version and compiled first time.

Thanks

James

Hi Steve,

I have version 4.1 . How can I get my hands on this new version as the "Check for Updates" says I have latest version ?

Regards

James

Hi All, I'm trying to use the lcd, can, I2C, RS232, Fat, EEprom and afew buttons in a data logging project. The project hangs when trying to compile assembly code. I've wittled it down to if you try to compile the LCD, CAN and I2C components. I've attached a very basic file to try and show what I me...