Search found 21 matches

by captbill
Tue Jul 07, 2015 12:23 am
Forum: Oberon Language
Topic: Returning Const Value via Procedural Type
Replies: 5
Views: 21973

Re: Returning Const Value via Procedural Type

However, I believe you were trying to achieve something else here by using a procedure type but I do not understand what. What I am venturing to do is to port a library for the RA8875 TFT driver chip. It has a massive listing of registers that you drive directly, thus the term "porting" is better d...
by captbill
Mon Jul 06, 2015 7:40 pm
Forum: Oberon Language
Topic: Returning Const Value via Procedural Type
Replies: 5
Views: 21973

Re: Returning Const Value via Procedural Type

I have a large listing of registers that I need to order sequentially to make SPI init sequences. CONST RA8875_PWRR = 010H; (*Power and Display Control Register*) RA8875_PWRR_DISPON = 080H; RA8875_PWRR_DISPOFF = 000H; RA8875_PWRR_SLEEP = 002H; RA8875_PWRR_NORMAL = 000H; RA8875_PWRR_SOFTRESET = 001H;...
by captbill
Mon Jul 06, 2015 5:41 am
Forum: Oberon Language
Topic: Returning Const Value via Procedural Type
Replies: 5
Views: 21973

Returning Const Value via Procedural Type

I am trying to implement a procedure type which returns the value of a constant. I need to implement a basic enumerator structure that can be processed in order. Is there a better way than the procedural approach I am attempting here? Is my use of a procedural type well founded? Can you point to any...
by captbill
Sat Jul 04, 2015 3:57 am
Forum: Astrobe for FPGA RISC5
Topic: FPGA Oberon Article in Xilinx Xcell Journal (Issue 91)
Replies: 6
Views: 21370

Re: FPGA Oberon Article in Xilinx Xcell Journal (Issue 91)

The initial implementation will only need a minimal version of the Project Oberon OS e.g. the Kernel, loader, filesystem, SPI, RS232, SD card support etc. The higher-level layers of the OS with the user-interaction features e.g. GUI, display, VGA, mouse, keyboard, compiler, editor etc will not be r...
by captbill
Fri Jul 03, 2015 9:25 pm
Forum: Astrobe for FPGA RISC5
Topic: FPGA Oberon Article in Xilinx Xcell Journal (Issue 91)
Replies: 6
Views: 21370

Re: FPGA Oberon Article in Xilinx Xcell Journal (Issue 91)

Wonderful! So let me get this strait: your goal is to be able to create "programs" which are based on the current "targets" available in Astrobe to "flash" to the ProjectOberon OS on the FPGA? Or does it create the whole flashable .bin file? That is interesting...and what timing! I have been trying ...
by captbill
Thu Jul 02, 2015 11:55 pm
Forum: Astrobe for FPGA RISC5
Topic: FPGA Oberon Article in Xilinx Xcell Journal (Issue 91)
Replies: 6
Views: 21370

Re: FPGA Oberon Article in Xilinx Xcell Journal (Issue 91)

Hi Chris,
Anything exciting happening with the FPGA lately?

Thanks
by captbill
Thu Jul 02, 2015 11:50 pm
Forum: Development Boards
Topic: New Astrobe Targets
Replies: 7
Views: 34335

Re: New Astrobe Targets

1. Tensilica line used on the ESP8266 WIFI modules. 2. Many "boards" are popping up all the time. Ideally, we have Magnus at Saanlima help design/implement our own needs. 3. 1 The Tensilica chip is a quite fascinating SoC microcontroller. It is the driving force mcu behind the IoT (Internet of Thing...
by captbill
Tue Oct 21, 2014 1:35 pm
Forum: Cortex-M3
Topic: LCD Text and Graphics demo forARM's mbed application board
Replies: 7
Views: 28833

Re: LCD Text and Graphics demo forARM's mbed application boa

Hi Chris, I got the hex worked out. That certainly wasn't going to compile. Haha. Next is fairly tall list of issues I need to work through. It needs 4-wire SPI. This chip uses a non-standard SPI model that involves a "D/C" or Data/Command line for fast switching between commands and moving pixel da...
by captbill
Mon Oct 20, 2014 4:46 am
Forum: Cortex-M3
Topic: LCD Text and Graphics demo forARM's mbed application board
Replies: 7
Views: 28833

Re: LCD Text and Graphics demo forARM's mbed application boa

Hi Chris, I believe this should do the trick except I cannot figure, for the life of me, why this .mod won't compile. It says I am missing a ";". Am I casting the hex values incorrectly? Am I missing the obvious? All the commands and the C++ that I used to port the init sequence are there as comment...
by captbill
Fri Oct 17, 2014 9:08 pm
Forum: Cortex-M3
Topic: LCD Text and Graphics demo forARM's mbed application board
Replies: 7
Views: 28833

Re: LCD Text and Graphics demo forARM's mbed application boa

Chris, I honestly assumed that everything was handled on the MC with these OLEDs. Where is the driver chip, haha? Surprise, surpise. Please pardon my haste. This is a lot more LCD than I bargained for. Quite powerful.It is the ssd1306 OLED. This one actually is tri-state SPI,I2C, or parallel. I foun...