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That is not what I was trying to tell you at all. Question for you: How would you code the following in C? (Flowcode equivalent will be provided after you've answered :-) ) if i between 20 and 30 call subroutineA else if i between 40 and 50, add 150 to i else if i between 100 and 200, subtract 100 f...

Looking at the generated C code I see you have a macro Sense_PortB which switches the Port B pins to input just after you have switched them to output and made them high for the pin change function. Also you test the pin status in that macro, but it is only called at the start of the program, not in...

Generally it is not a good idea to delay for significant amounts of time in interrupt routines. You want them to be handled as soon as possible to avoid missing the next interrupt. For testing purposes I would remove the clear/print waiting sequence from the main loop. Also in the interrupt, clear s...

I do not have the AVR version of Flowcode so I haven't opened your program, but do you print "Waiting" continuously in the loop? If so, would it not overwrite the "Got it" message the ISR displays before you get a chance to read that message?

The SPI component macro's SPI_Get_Char reads one 8 bit byte. SPI_Get_String reads the specified number of bytes and stores them in a String. The names of the macros can be confusing as they could be interpreted to return ASCII characters/strings but they do return byte(s). To read an integer value (...

I have moved your question to the general programming area as it is not a tip or trick (please do not post questions in that forum). Please register for the forum appropriate for your version of Flowcode so one of the moderators can move this topic there. (registration instructions for Flowcode 5 or...

This processor has 2 EUART modules. This results in two sets of bits to enable/disable/check the interrupts.

For UART1 change RCIE to RC1IE and RCIF to RC1IF.
For UART2 change RCIE to RC2IE, pie1 to pie3, RCIF to RC2IF and pir1 to pir3.

You need to include a call to the component macro "Initialise_Serial" in your flow to make sure Flowcode includes all required code fragments. Once you add this the error will disappear. (Calling any of the component macros will probably work, however you will need to initialize the component anyway...

You will need to add a C-code block to your program (before using the RS232 macro's). If you want to set UART1 RX to pin RP97 and UART1 TX to pin RP80 use: RPINR18bits.U1RXR = 0b1001111; RPOR4bits.RP80R = 0b000001; To find this, for the input side, locate the function you want to configure (UART1 RX...

Flowcode 5 does not provide USB host. All supplied USB components are slave mode only. I do not expect USB host will be added soon.

Could you try changing the options to

For use with pickit you should not use filenames with spaces. Please save your project as count.fcf and try again.

DPI stands for Dots Per Inch. It is a setting of your display. For instructions on how to change this setting in windows 7/8: visit this site Set to 100% for best results with Flowcode.

To read measurements from analog sensors, use ADC component.

Switch can only be used for single values, not ranges, just like the C equivalent. Multiple decision blocks can be nested, that is basically what you do in C as well if ( condition ) { code1; } else if ( condition2 ) { code2; } Is equivalent to adding two decision blocks, with code1 in the "yes" flo...

Could you try to compile and load the attached flowchart?

The first thing I notice is the capacitor on MCLR. One of the precautions:
"Do not use capacitors on MCLR: they will prevent fast transitions of VPP."

However is the combination is working with MPLAB it should be able to work with Flowcode. Could you post the messages?

I am using PICkit2 for in circuit programming a lot (from MPLAB) so I know how the power on these programmers works. I am unclear on the way you use the diode in your hardware. Do you have a circuit diagram? Reading your first message I get the impression PICkit3 can program your circuit using MPLAB...

PICkit3 is powered by USB, not the target power, except for the Input/Output drivers. What diode are you using and how is it connected? Does the same hardware (PICkit3 and target board) work correctly with MPLAB?

Please attach the output to a message. It allows us to see all the messages generated. (Output is in a file ...msg.txt in the directory your Flowcode source is stored in)

Have you checked the precautions listed in PICkit3 quicksheet. It states where not to put capacitors.

Also, in MPLAB there are settings to use targer power or provide power (and what voltage) to the target. Have you set the command line switches accordingly?

Have you checked the 16f877 is the only chip fitted? There should not be another chip in the two sockets next to the 40 pin socket. Usually there is a 16f88 in the 18 pin socket...

medelec35 wrote: crystal (and caps) should be connected to pins 13 & 14 (osc1 & osc2)
Not 16 & 17!

Why oh why didn't I notice this...

Glad you did Martin

Check this site for a possible solution. Or google 'drive relay from microcontroller' for more results...

Using the same 5V source for all 5V references in your circuit is fine.

Could you post your flowcode file so we can check the chip settings?