Matrix user forums

Hi Martin Flowcode file attached. Background info. One PCB (remote) with 4 buttons. RS232 to this PCB with 4 LEDs. Message format is "MBx<carriage return><line feed> Where MB stands for 'Message' 'Buttons' and x is the button data from 0 to 15 to show which buttons have been pressed. What I'm trying...

Hi kersing Although the program compiles Ok now, I cannot get the receive interrupt to work. The interrupt routine just sets a Flag "RxFlag = 1". However, when running the program in a loop and sending RS232 data to the PIC (from a terminal program on the PC via a RS232 to USB dongle) RxFlag always ...

Hi kersing

I have removed the display functions in the interrupt routine and now it compliles without errors.
Looks like you've solved it - thank you
I'll double check that everything is working OK tomorrow, but this is a big step forwards.

Cheers

Clive

Hi I'm using a PIC18F46K22 to send and receive RS232 with Flowcode 8. I have a compiler problem on receive when trying to use the circular buffer. After failing to find the problem on my own code, I have downloaded UART_test.fcfx from this forum (published by chipfryer on the 9th April 2020) and get...

I guess I'm on my own on this one? No help seems to be forthcoming.

Hi Ben

The A0 signal should latch data on the 8th rising edge of SCL (see attached ST7586 datasheet excerpt).

Screenshot of oscilloscope trace shows in practice it only moves every 3 bytes.

Hope this is helpful info.

Regards

Clive

Hi Ben I have proven an SPI Interface from a PIC18F46K22 (3V3) to an ILI9341 display - see attached photo. However, when I recompile it using the Flowcode ST7567, as you suggested, the GLCD just stays blank. I have checked all the SPI signals with an oscilloscope and all the levels are good. Any hel...

Hi Ben The ST7567 seems to be limited to a resolution of 65x132 =8580 bits. The display I have is the Midas MDCOG240064E6W-FPTLW which uses the ST7585 driver and has a resolution of 240x64 = 15,360 bits. It's bigger brother, the MDCOG240128B6W-FPTLW has a resolution of 240x128! So, I don't think the...

Hi

I have a graphic LCD which uses the Sitronix ST7585 driver. Is there anyway I can use Flowcode 8 to control this display?
I am not worried if I have to use a serial or parallel interface.

Regards

Clive

Hi Martin

Sory I've taken so long to get back to you!

That works - thanks for your help. Much appreciated.

Clive

Thanks Martin

I'll try what you suggested and let you know the results!

Cheers

Clive

Hi chipfryer27 and QMESAR Thanks for your help and advice. I've spent some time 'playing' this afternoon and these are the results - In all Tests below, The Oscillator Selection Bits (In the Configure tab) is set to "Internal Oscillator block, CLKOUT function on RA6, port function on RA7 TEST NO.1 I...

Hi I've had trouble getting a graphics LCD ILI9341 to work on SPI. I'm using a PIC18F45K22 with the internal RC Oscillator. When I run the '1 second test' it is 8 x slow. i.e. 8 seconds up, 8 seconds down instead of 1 second up, 1 second down. I have attached some screen shots. What am I doing wrong...

Hi I'm reading the internal part number number of a device over I2C. The part number is in the form HDL12345678 and it is transmitted character by character as ASCII ie H = 72, D = 68, L =76 etc I want to store this in a string variable 11 characters long. i.e. StringVar = StringVar + ASCII(byte) So...

Hi Steve

A Windows reboot and then re starting Flowcode has fixed it.
I should have thought of that myself.

Thanks for your help

Clive

Hi
I've just downloaded Flowcode 8 on a 30 day trial.
Problem - I cannot see how to add variables to the simulation debugger window.
I do not have the 'Expression' and 'Value' tabs mentioned in the Flowcode help.
Please see attached screenshot

Any help gratefully received!

Clive

Hi I'm using Flowcode 6 on a PIC16F1827 to read the temperture on an LM75 via I2C. Just writing a simple routine using the I2C Master has 'eaten 4355 words of memory, but the PIC16F1827 only has 4096. So it doesn't have enough memory to complile to hex. Has anyone else seen this? Am I missing someth...

Hi Ben I'm certain there is a bug in the way Flowcode handles the PIC18F8490. I had tried two separate identical PCBs with the 8490. No joy. After a couple of days trying to get Port F to work as an input I unsoldered the the 8490 and replaced it with a PIC18F8722 on both PCBs Wham. Perfect - with n...

Whoops - a bit premature there when i said I'd cracked it! Compiler error has gone away but Port F still not functioning correctly. Set a loop to read port F and display result on LCD. 'walking' along pin F pins with a probe connected to +5V pins 0,1,2 and 7 read OK (1,2,4,128 respectively) Pins 3,4...

OK, cracked it.
Address 300004 relates to 'external 8bit or 16 bit bus'
This is configurable in Flowcode/Build/Project options/Configure menu but there is no mention of this on the PIC18F8490 datasheet!
Setting bit 38 to 'external 16 bit bus' cured the problem.

Hi Flowcode V5.5.2.1, PICKIT 2 V2.61, PIC18F8490 Compiles OK but I get the following error message when trying to program the chip "PICkit 2 Program Report 26-Jan-2015, 16:41:24 Device Type: PIC18F8490 Configuration Memory Errors Address Good Bad 300004 008103 0081C3 Return code = 34 Flowcode was un...

Thanks Martin and Jonny - I will give V6 another go.

Clive

Hi I've just started trying to use V6 by loading an existing V5 program which needed a quick and simple mod. The V5 Panel components have been imported into the V6 System Panel but with no text. I know I can edit/amend this but they are tiny and I cannot find how to zoom into them. Only option seems...

Hi Ben

Yes, that's fixed it! Great job - thank you.

Clive

Hi After some problems trying to implement an RC5 infra red remote controller on a PIC16F887 which were attributed to possible stack overflow in the PIC I thought I'd try a PIC18F4520 which is pin compatible but has 31 levels of stack as opposed to 8 in PIC16F887. However even the most simple flowch...