Search found 37 matches

by robert_o
Thu Jun 04, 2020 11:52 am
Forum: User Projects
Topic: Looking for PS/2 Keyboard and Mouse Example
Replies: 0
Views: 589

Looking for PS/2 Keyboard and Mouse Example

Hello everybody, it has been a long time since i've done some programming but now i have a new challenge. I want to build a keyboard converter for my Commodore C128D. The C128D has an external keyboard without controller - just the Matrix is exposed and connected via 25pin Sub-D. To connect a microc...
by robert_o
Tue Jul 17, 2018 5:38 pm
Forum: User Projects
Topic: STM32F030F4 Shell, PWM Sinewave, ADC, TIM14
Replies: 2
Views: 2401

Re: STM32F030F4 Shell, PWM Sinewave, ADC, TIM14

Sorry, just saw the post.
Here it is...
by robert_o
Tue May 08, 2018 10:18 am
Forum: STM32 Support
Topic: nRF24L01 using with stm32f407 discovery
Replies: 2
Views: 921

Re: nRF24L01 using with stm32f407 discovery

I would start with a forum search followed by an internet search...
by robert_o
Wed Mar 28, 2018 6:55 pm
Forum: General Support
Topic: Q: Status of external EEPROM Support
Replies: 10
Views: 2021

Re: Q: Status of external EEPROM Support

Thank you mobyfab, that looks most helpful!
by robert_o
Tue Mar 27, 2018 8:52 pm
Forum: General Support
Topic: Q: Status of external EEPROM Support
Replies: 10
Views: 2021

Re: Q: Status of external EEPROM Support

Thank you, the driver works fine. The demo is unfortunately for a SPI EPROM but i figured out how to use it. To reduce the write occurences i could read one bloc into RAM, compare byte by byte and write only the different ones, would you agree? The bitbucket link contains my code for writing a confi...
by robert_o
Fri Mar 23, 2018 10:05 pm
Forum: General Support
Topic: Q: Status of external EEPROM Support
Replies: 10
Views: 2021

Re: Q: Status of external EEPROM Support

Thank you, mobyfab. I actually did exactliy that and i now have the driver patially working but still have some questions. First: this is my code for writing my variabls to eeprom: i made a struct with arrays of pointer to whatever and sizes of the array elements: typedef struct { void* ptr[3]; uint...
by robert_o
Mon Mar 19, 2018 10:25 am
Forum: General Support
Topic: Q: Status of external EEPROM Support
Replies: 10
Views: 2021

Re: Q: Status of external EEPROM Support

Thank you for your reply. Quick as always :) Did you mean the discussion here: http://www.chibios.com/forum/viewtopic.php?t=3320 ? I think this is the code in trunk/os/ex right? Can i use this for I2C EEPROM 24c32? I know this is not really Chibios Support, it would just be nice to have some directi...
by robert_o
Mon Mar 19, 2018 10:10 am
Forum: General Support
Topic: Q: Status of external EEPROM Support
Replies: 10
Views: 2021

Q: Status of external EEPROM Support

Just a Question: It is a little difficult to get a picture of external EEPROM (24 or 25 Type, SPI or I2C) drivers. I found the following examples: https://github.com/ChibiOS/ChibiOS-Contrib/tree/master/testhal/STM32/STM32F3xx/EEProm https://github.com/timonwong/ChibiOS-EEPROM https://github.com/bart...
by robert_o
Sat Jan 27, 2018 8:12 am
Forum: User Projects
Topic: u8g2 ported to ChibiOS first draft - working
Replies: 9
Views: 2493

Re: u8g2 ported to ChibiOS first draft - working

Thank you for your suggestions. I think until there is some feedback from somebody who actually needs this and the timing problem with ks0108 display is addressed from the u8g2 developer i won't change the code again. Furthermore are this small patches, easily added. The "framework" is fun...
by robert_o
Wed Jan 24, 2018 4:35 pm
Forum: User Projects
Topic: u8g2 ported to ChibiOS first draft - working
Replies: 9
Views: 2493

Re: u8g2 ported to ChibiOS first draft - working

Version 0.3 is ready for testing. Added polled delay, tested KS0108 Display (8-bit parallel). The timing of the KS0108 is way off! Datasheet says 450ns - in reality 2.8us are needed. I made a hack because the u8g2 lib has only 8bit for timings. I guess it wasn't a problem because slower micros need ...

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