Search found 538 matches

by TomNB
Tue Feb 06, 2024 6:05 pm
Forum: NetBurner Software
Topic: Ramdisk
Replies: 14
Views: 492

Re: Ramdisk

Just one more point, the most commonly used refers to FAT12, not 50k. FAT12 goes up to 2.8M in size.
by TomNB
Tue Feb 06, 2024 6:04 pm
Forum: NetBurner Software
Topic: Ramdisk
Replies: 14
Views: 492

Re: Ramdisk

Thanks for that. Starting with the unmodified RamMinimal example, it is only a 1 line change. In ramdrv_mcf.cpp, set the drive size by editing the line: const uint32_t RAMDRV0_SIZE = 0x80000; // Adjust size of ram drive here The above 0x80000 is a 512k drive. 0x40000 would be a 256k drive. The comme...
by TomNB
Tue Feb 06, 2024 12:46 pm
Forum: NetBurner Software
Topic: Ramdisk
Replies: 14
Views: 492

Re: Ramdisk

What platform, and how much physical ram is on it? Also, when you build your project, what is the ram usage? Any dynamic allocations? Which example are you using? Where do you see 2.8MB in the documentation? Which documentation is unclear on the mount and format functions? Always need this level of ...
by TomNB
Mon Feb 05, 2024 10:10 am
Forum: NetBurner's Eclipse IDE
Topic: File descriptor on read becoming invalid.
Replies: 6
Views: 763

Re: File descriptor on read becoming invalid.

Hi Rob,

Glad its working, and thank you for the update!
by TomNB
Sun Feb 04, 2024 9:49 am
Forum: NetBurner's Eclipse IDE
Topic: File descriptor on read becoming invalid.
Replies: 6
Views: 763

Re: File descriptor on read becoming invalid.

Hello Rob,

We see that you already posted your tools rev and platform. We will use that.
by TomNB
Fri Feb 02, 2024 10:12 am
Forum: NetBurner's Eclipse IDE
Topic: File descriptor on read becoming invalid.
Replies: 6
Views: 763

Re: File descriptor on read becoming invalid.

Hello,

Tools revision and platform?
by TomNB
Wed Dec 20, 2023 8:57 am
Forum: NetBurner Software
Topic: Arrows in the icons of files that I just added
Replies: 1
Views: 891

Re: Arrows in the icons of files that I just added

Hello Tim, The arrow in windows usually means a shortcut. Eclipse is just reporting the icon per the type of thing you put in, its not something it is interpreting. So to me that looks like what you dropped in is a windows shortcut to a gif, not the gif itself. Just my first guess. To fix it, delete...
by TomNB
Mon Dec 18, 2023 9:46 am
Forum: NetBurner Hardware
Topic: CB34EX JP23 / JP26 Description
Replies: 8
Views: 2183

Re: CB34EX JP23 / JP26 Description

Hello Tim,

That is correct. If you want termination on the DB9, they need to be added to the connector or cable.
by TomNB
Fri Dec 15, 2023 9:48 am
Forum: NetBurner Hardware
Topic: CB34EX JP23 / JP26 Description
Replies: 8
Views: 2183

Re: CB34EX JP23 / JP26 Description

Thanks Tim. The goal is bus impedance matching. A RS-485 bus is a multi-drop bus, meaning it can have more than one device on it. Whether just two devices or many more, only each end of the bus should have 120 ohm termination, and optionally bias resistors. The impedance matching reduces reflections...
by TomNB
Thu Dec 14, 2023 3:17 pm
Forum: NetBurner Hardware
Topic: CB34EX JP23 / JP26 Description
Replies: 8
Views: 2183

Re: CB34EX JP23 / JP26 Description

Take a look at page 4 here, where Rb is bias, and Rt is termination:
https://www.ti.com/lit/an/slla272d/slla ... 2553535528

This is not the part used on the CB34EX, but it has good graphics. The termination and bias in the CB34EX are all 120 ohms