Glad you got it sorted out.
They do show some typical values for the IO slew rate in the datasheet (table 47-10). What you're seeing seems to pretty much match...
Search found 1473 matches
- Tue Apr 23, 2024 12:00 pm
- Forum: General
- Topic: slew rate control
- Replies: 3
- Views: 706
- Sat Apr 20, 2024 1:42 pm
- Forum: Modules
- Topic: 8 Pin 18F series chips?
- Replies: 2
- Views: 546
Re: 8 Pin 18F series chips?
As far as I know, there are no 8-pin 18F's.
The smallest I'm aware of are the 18F0xQ40/Q41 which come in 14-pin TSSOP/SOIC packages.
A 14-pin SOIC is about the same size as an 8-pin DIP package, give or take.
They're pretty capable little chips... a bit of just about everything.
The smallest I'm aware of are the 18F0xQ40/Q41 which come in 14-pin TSSOP/SOIC packages.
A 14-pin SOIC is about the same size as an 8-pin DIP package, give or take.
They're pretty capable little chips... a bit of just about everything.
- Fri Apr 19, 2024 1:43 pm
- Forum: General
- Topic: slew rate control
- Replies: 3
- Views: 706
Re: slew rate control
Setting them to 0 should work, but SetAllDigital should already be doing that for you. The library file SetDigitalIO.bas, version v3.0 has an #option that controls this, and it defaults to setting the slew-rate back to normal for all the ports #option DIGITALIO_SLEWRATE = 0 // 0=normal, 1=slow (SLRC...
Re: Firewing
Seems to be up and running now (at least here)...
- Mon Mar 18, 2024 9:57 pm
- Forum: User Modules
- Topic: isrrx routine
- Replies: 2
- Views: 882
Re: isrrx routine
The xvISRRX2 module is for use with vectored interrupt mode. For "standard" interrupts the ISRRX2 module should work with the Q43. Currently, there's no function to get the number of bytes in the buffer... if DataAvailable returns true then use ReadByte to get the data ' read data from the buffer an...
- Fri Mar 01, 2024 1:38 pm
- Forum: General
- Topic: UMC Bootloader
- Replies: 10
- Views: 1198
Re: UMC Bootloader
Yeah, you have to have the 'UMC Firmware' button enabled in the MCLoader.
It shows as highlighted on my machine, but that probably depends on the OS, setup, etc, etc
It shows as highlighted on my machine, but that probably depends on the OS, setup, etc, etc
- Thu Feb 29, 2024 1:20 pm
- Forum: General
- Topic: UMC Bootloader
- Replies: 10
- Views: 1198
Re: UMC Bootloader
Here's a copy of the stand-alone UMC loader file for the Q43. The umc_18FxxQ43.asm file contains info on how to assemble it to get the hex file... SF has all the files you need. It should work with any of the Q43 family, allows use of UART1-UART5, and contains settings for PPS mapping to change the ...
- Wed Feb 28, 2024 1:43 pm
- Forum: General
- Topic: UMC Bootloader
- Replies: 10
- Views: 1198
Re: UMC Bootloader
Sorry Rich... real life got in the way. Hopefully I'll be able to get back to it today or tomorrow. As far as the ports go, the default is to use the "standard"uart pins, but you can change this... ;----------------------------------------------------------------------------- ; UART PORT/PIN selecti...
- Sat Feb 24, 2024 3:20 pm
- Forum: General
- Topic: UMC Bootloader
- Replies: 10
- Views: 1198
Re: UMC Bootloader
I have a bootloader file put together for the Q43... now I just need to test it.
Won't be able to get to it till after the weekend
Won't be able to get to it till after the weekend
- Fri Feb 23, 2024 1:55 pm
- Forum: General
- Topic: UMC Bootloader
- Replies: 10
- Views: 1198
Re: UMC Bootloader
1 - The UMCLoader app in the MCLoader\umc folder is the latest version. 2 - You're not going to be able to use UMCBuild.exe to generate the bootloader for newer devices... it needs some microchip files that are no longer available. See UMC Build Error for more details. What I've done for more recent...
- Sun Feb 18, 2024 11:12 pm
- Forum: Compiler
- Topic: 18F16Q41 - #error _device + " does not support MSSP"
- Replies: 2
- Views: 694
Re: 18F16Q41 - #error _device + " does not support MSSP"
The library files SPI.bas and SPI2.bas are for use with devices that have an MSSP peripheral. For the new xv18 core devices with individual SPI and I2C peripherals, use SPIxv.bas and SPI2xv.bas. The defines/options might be a little different, so check them out. You'll definitely have to map the pin...
- Tue Jan 30, 2024 12:48 pm
- Forum: General
- Topic: half bridge/full bridge pwm
- Replies: 4
- Views: 857
Re: half bridge/full bridge pwm
I see. That app note would worry me... think I'd add the pulldown resistors to the ALI/BLI inputs to keep them low just in case.
- Mon Jan 29, 2024 11:30 pm
- Forum: General
- Topic: half bridge/full bridge pwm
- Replies: 4
- Views: 857
Re: half bridge/full bridge pwm
Looking at the HIP4081A datasheet, it has a DIS input that would help with initialization issues. If you pull that high it should disable the outputs until you have set up the PWM outputs... tie that to an IO pin and set it low once everything is ready. Both the PWM and CWG peripherals can generate ...
- Mon Jan 29, 2024 2:13 pm
- Forum: General
- Topic: half bridge/full bridge pwm
- Replies: 4
- Views: 857
Re: half bridge/full bridge pwm
The PWM peripheral has a lot more control than the CCP used in PWM mode. but you might look at the CWG (complimentary waveform generator). In any case, if you need the IO pins to power up low you'll have to add pulldown resistors on the IO pins to keep the pins low during startup. IO pins powerup as...
- Fri Jan 26, 2024 11:43 am
- Forum: General
- Topic: OPEN SOURCE PIC PROGRAMMER
- Replies: 2
- Views: 712
Re: OPEN SOURCE PIC PROGRAMMER
For the 18F25K50 there's also this one from the same guy who does the Pickitminus software ...
Nice thing about that one is you can use it with MPLAB as a debugger, UART serial analyzer, etc.
Nice thing about that one is you can use it with MPLAB as a debugger, UART serial analyzer, etc.