https://es.freedownloadmanager.org/Windows-PC/HI-TECH-PICC.html

To Paulino:

According to the link you send me I downloaded "UniversalToolsuite-1.37" which is a very old version of HI-TECH.
Does it work?


To Jose:

According to the link you send me I downloaded "Compiler-HTC-Pic16_9.82 "
I tried to install it but it asks me for a Licence.
Don't you have a free version of HI-TECH 9.82 that you can share?

I would appreciate a lot!

Thank you so much José. I will try the HI-TECH 9.82 lite version.


Merci beaucoup José. Je vais essayer la version HI-TECH 9.82 lite.

Hi Angelo

1) The message "Invalid I2C name in ladder" is typical of the bug existing in verson 5.4.0.4 ; it's due to the fact that Ihor, the main developper, has renamed the I2c bus from I2C to I2C1, but changes has not been done everywhere in source code and it can't work at all...

So, if you want to have your program working with I2C, must downgrade to a previous version or use my build as previouly said...

2) I2C address is determined by your memory module : look at your datasheet(between 1 and 127). And I2C registers too, according to what you wanna do with it. Your values are ugly...

3) With PIC16F887 40 pins your SCL should be 18 (RC3) and SDA 23 (RC4) ; I don't know how you can have other values as defautlt ones are OK for me. You must lok at it AFTER selecting mcu.

Heres's what I can say.
José

Hi José:

Attached I send you some problems about trying to use the I2C function.

I just want to write and read a serial I2C memory.

I hope you (or anyone on the forum) can help me.

Thank you very much in advance.

To Angelo:

I've had a look at your doc ; your program seems to be much better.

Have you got some files in HTC\lib and HTC\obj ?

If no hex file is generated, it's probably due to some compiling errors when launching flashMCU.bat
Can you post the output of this script so that I can have an idea of the problem ; and post your ld file too.

José

OK !

If you don't have anything in HTC\lib, it can't work at all.
Libraries are normally copied here by flashMCU.bat from their original place which is the "LIBRARIES_FOR" directory in ldmicro.exe folder => There's a config pb.

"Pre" files are of no use for me. You must post your flashMCU.bat (rename it as flashMCU.txt) and its ouput at screen when running (screen captures).

José

Firstly I send you the screenshots and in a second post I send you the flashMcu file as a Text file.

Hi José:

Thanks for the recommendation. Now the software created the .hex file.

I downloaded the i2c_read_writte_memory_1.hex file into the PIC16F887 but nothing happens.

I decided to create a new file, just to test.

When I compiled this file (Test_program) just using Ldmicro, it worked O.K. when downloaded into the PIC.

When I compiled this file (Test_program) using HI-TECH and flashMcu method, I realized that nothing happens when downloaded into the PIC. I mean the program is not running.

Simulation works well.

Attached I will send you the files you ask for.

Simulation works well.

Attached I will send you the files you ask for.

Hi Angelo

I have recompiled your Test_program.ld file and files generated with 5.3.1.0 seem to be the same as yours.

Then I have lauched FlashMCU.bat and it has generated an hex file. Here's my output during flashMCU in a zip file. Is yours similar ? I just have an error at the end because my Pickit3 was not connected ; I don't have PIC16F887, only 16F877(A).

Are you sure that your hex file is uploaded to the PIC ???
Please show me your own ouput.

José

OK Angelo, we'll try to understand !

1) In your output for 16F877, no hex file is generated because of an error (877_3.jpg) "can't find 0x2 words for psect..."
I don't understand what it means but it's not important for the time being.

2) Your output for 16F887 is ok, you have the "Memory summary".
But the program is not uploaded to the target because you get the message "Device not found" from PK3CMD.
It works when you upload it manually because on the one hand you select PIC16F887 (manual) and on the other one you select PIC16F887A (flashMCU). There are very little diffrences between them but you must select the right target ; and beware that 887A can run at 20 MHz while 887 only at 4 MHz.

It may explain some of your problems...
Which one have you got ? 887 I believe. If so you must edit your FlashMCU.bat and remove 'A' after -P%4 in PK3CMD.exe command line. And you musn't run at frequencies higher than 4 MHz...

Let me know if it solves the issue ?

OK.

In the mean time, you may try your 887 at 4 MHz with your test_program just to know if it works fine or if the pb is somewhere else ?

Hope I'll have some time this week-end to test on my 877(A).

BR.

Here's another program, similar to yours, which works fine on PIC16F877A using Compile for HTC + FlashMCU (version 5.3.1.0).

I have changed:
- pin assignment (according to my board) ; we can in fact use RB3, 6 and 7 but it's better to use other pins if possible.
- pull-ups => 0
- config bits => 0x3F72
- buttons logic (according to my board)

Try to adapt it to your 887(A) ?

Beware that config bits are (strangely) very different on 877 and 887 family !!! There's one word on 877 and two words on 887.
Your value 0x060023E2 seems to be correct...

Hi!
I'm not reading completely this thread, but...
what kind of beast PIC16F887A is?

I cann't found this microcontroller in Microchipe site.
I suspect that Angelo have been confused about Microchip codes...

There is only PIC16F887, an upgrade and replacement of the old PIC16F877A (EOL).
This "new" microcontroller has different config words, in fact 2 config words in 887 versus 1 config word in 877(A), as José has stated.

---

BTW (perhaps a new thread?)

I habitually use PIC16F887, is the first microcontroller I've choosed for my OSIMPLC, Open Hardware + Free Software PLC for educative purposes, see https://osimplc.com

Of course, PIC16F887 onto OSIMPLC can be programmed using LDmicro, and the machine code can be downloaded into PIC16F887 flash memory using an USB-TTL adapter, thanks to Tiny PIC bootloader firmware preinstalled in the microcontroller and TinyBootloaderLin software under GNU/Linux https://github.com/lcgamboa/tinybldlin, or Tiny Multi Bootloder+ software under MS Windows http://tinypicbootload.sourceforge.net/ .

The second (optional) microcontroller for OSIMPLC will be ATmega1284P 44TQFP, its adapter module is in beta stage.
I'm programming this microcontroller with a LDmicro new alpha version that Ihor sent me, and downloading the machine code with the USB-TTL adapter and One Way Loader firmware and software for GNU/Linux and MS Windows http://jtxp.org/tech/onewayloader_en.htm

Best regards,
DanielH

Thanks Daniel;
Hi José:
When working with Ldmicro alone IT IS POSSIBLE to configure PORTB.6 and PORTB.7 as inputs.

When working with HI-TECH and flashMcu method IT IS NOT POSSIBLE to configure PORTB.6 and PORTB.7 as inputs.

I tried the very first Test_program. That is PIC16F887 at 20 Mhz and works O.K. but never using portb.6 and portb.7 as inputs. I did not change the configuration bits neither the pull-up resistors configuration i.e. I used the default configuration.

I really do not like using portb.6 and portb.7 as outputs because when downloading the .hex by the Pickit3 they always get activated. If a motor is connected to one of them it could be dangerous.

Coming back to the original program (i2c_read_writte_memory_1) I still have trouble because it is not writing and reading the serial memory. I will continue checking out the memory configuration.

Thank you very much.

BTW, would you be so kind enough to send me more information about the configuration bits in the configuration panel.

PS:

"Configuration bits" are explained in the datasheet of the µC.
(chap 14.1 in my datasheet of 16F887).

To get a value, you must set each bit as 0 or 1 according to what you wanna do, and then encode it in hexadecimal (Reg 1 = low word, Reg 2 = high word)

To Angelo:

I have studied your datasheets.

You can't use AT24C32A with existing I2C library for ldmicro because it uses 16 bit memory adresses, which is not supported as is.

But you should be able to use 24LC16B because it uses only 8 bit memory addresses.

Concerning 24LC16B:

- WP pin must be to Gnd
- A0, A1, A2 are not used

- I2C address is from 0x50 to 0x58 in hexadecimal according to the memory block you wanna use ; test 0x50 for the time being

- Write sequence is StartW(I2C_address) + Write(Mem_address) + Write(Value) which will become in ldmicro an instruction
I2C_Write with ;
address= I2C_Adress = 0x50 (for instance)
register= Mem_Address = 0 (to test first byte in memory)
value= Value to store at this address = 0x25 (for instance)

- Read sequence is StartW(I2C_address) + Write(Mem_address) + RestartR(I2CAddress) + Read(Value) which will become in ldmicro an instruction
I2C_Read with ;
address= I2C_Adress = 0x50 (same as above)
register= Mem_Address = 0 (same as above)
receive variable= variable to store the value (should give the same value as above)

Try it and let me know ?

Ok Angelo !

I'm glad to see that it I2C works for you.

I'll try to take time to have a look at RB6-7...

Best regards