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  Topic: ccs c compiler (PCH) with MPLAB X and Linux - issue
JackB

Replies: 2
Views: 12271

PostForum: General CCS C Discussion   Posted: Tue Apr 19, 2016 10:04 am   Subject: ccs c compiler (PCH) with MPLAB X and Linux - issue
As you see the size are too much different, which is not the result of different time stamps.
Also, I started to discover this after the download to the board and noticing odd behavior.
The behavior ...
  Topic: ccs c compiler (PCH) with MPLAB X and Linux - issue
JackB

Replies: 2
Views: 12271

PostForum: General CCS C Discussion   Posted: Tue Apr 19, 2016 9:37 am   Subject: ccs c compiler (PCH) with MPLAB X and Linux - issue
Hi,

I use PCH Compiler Version 5.057 (PCH) with MPLAB X 3.26 and Linux Mint 17.3.
When I compile (Clean and Build project button) the same source again and again, I get different sizes hex files: ...
  Topic: SOLVED: Different serial streams - compiler warning
JackB

Replies: 13
Views: 22181

PostForum: General CCS C Discussion   Posted: Thu Mar 24, 2016 6:14 am   Subject: SOLVED: Different serial streams - compiler warning
For the moment, I accept the compiler Version 5.055 on Linux can't do without these warnings, I think I tried everything.
But it works just fine.
Thank you again for your help!
  Topic: SOLVED: pwm frequency too high (1.22Khz) on PIC18F at 20MHz
JackB

Replies: 6
Views: 17380

PostForum: General CCS C Discussion   Posted: Thu Mar 24, 2016 6:03 am   Subject: SOLVED: pwm frequency too high (1.22Khz) on PIC18F at 20MHz
Hi asmboy,

I understand higher PWM frequencies is often what you want or need.
However this is connected to a LT3791 Power LED driver.
This chip has it's own PWM (at a high frequency) to regulate ...
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Thu Mar 24, 2016 5:44 am   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
Hi, I changed the pull-up resistors from 4k7 to 1k5.
It did not help, but I still think that is better.

This hangs i2c_write:
#use i2c(MASTER, FAST, I2C1)

And this works, it might be software ...
  Topic: SOLVED: Different serial streams - compiler warning
JackB

Replies: 13
Views: 22181

PostForum: General CCS C Discussion   Posted: Tue Mar 22, 2016 6:29 am   Subject: SOLVED: Different serial streams - compiler warning
Hi John,

my compiler version is CCS PCH C Compiler, Version 5.055. I'm using Linux.
Learning from the other people here, I don't think that changes the PIC18F hardware capabilities, though.
I men ...
  Topic: SOLVED: pwm frequency too high (1.22Khz) on PIC18F at 20MHz
JackB

Replies: 6
Views: 17380

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 4:19 pm   Subject: SOLVED: pwm frequency too high (1.22Khz) on PIC18F at 20MHz
It works, but I get 1.22kHz at lowest.
I would like to get a pwm frequency of around 100-200Hz.
  Topic: SOLVED: pwm frequency too high (1.22Khz) on PIC18F at 20MHz
JackB

Replies: 6
Views: 17380

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 3:44 pm   Subject: SOLVED: pwm frequency too high (1.22Khz) on PIC18F at 20MHz
Hi,
I use ECCP1 to generate a PWM signal on a PIC18F67K90 at 20MHz.
Ideal, I would like a pwm frequency of about 100Hz.
However I get 1.22kHz at lowest.
However, the pwm_set_frequency function doe ...
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 3:34 pm   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
Hi Ttelmah,
Thank you very much!
What you explain to me, makes much sense.
The total physical length of the tracks on the PCB may be 10cm at maximum.
Regards,
Jack.
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 12:51 pm   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
Hi,

yes, my compiler version is indeed still the same.
I use 5k pull-up resistors.
I use the LM75B, MCP7940N, MCP4726, all support 400KHz speed.

One of those hangs with i2c_write:
#use i2c(MA ...
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 7:55 am   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
I use FORCE_HW, it still gives a warning for the i2c_speed function, but it compiles.
However, the software starts to hang after the first i2c_write(MCP4726_ADDRESS); function.
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 7:16 am   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
Thanks,
now I use:
#use i2c(MASTER, FAST, SCL=PIN_C3, SDA=PIN_C4)
It still doesn't know this function
i2c_speed(400000);
But I guess, I addressed that with "FAST"?
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 6:07 am   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
Thanks for the quick response!
I also have: Option invalid - Bad Option: #use i2c
In the lst file I found:
CCS PCH C Compiler, Version 5.055, 29447
I'm using it with MPLAB X on a Linux Mint laptop ...
  Topic: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
JackB

Replies: 12
Views: 25071

PostForum: General CCS C Discussion   Posted: Mon Mar 21, 2016 5:32 am   Subject: SOLVED: i2c_speed - unable to resolve identifier i2c_speed
Hi,
I found i2c_speed in the ccs c manual, but the compiler gives "unable to resolve identifier i2c_speed".
Note the other functions i2c_start, i2c_write, i2c_read, and i2c_stop work fine ...
  Topic: SOLVED: Timer interrupt slow
JackB

Replies: 2
Views: 6405

PostForum: General CCS C Discussion   Posted: Sun Mar 20, 2016 5:04 am   Subject: SOLVED: Timer interrupt slow
Hi Jeremiah,

thank you very much! That fixed the problem!
I'm still learning with ccs c.
It works as expected, and I have added your comments in the code for future reference.
This is how I unde ...
 
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