Use reserved vectors in Cortex-M3 vector table

Started by pozz in comp.arch.embedded6 months ago 6 replies

Here[1] you will find the vector table of Cortex-M3 core. There are 4 vectors (16 bytes) that are named "Reserved" (plus one more at index...

Here[1] you will find the vector table of Cortex-M3 core. There are 4 vectors (16 bytes) that are named "Reserved" (plus one more at index 13). Do you think they can be used for custom purposes? The word "Reserved" seems this can't be done. I'd like to use those vectors, that are in the non-volatile Flash memory, to store some data. In my case, I will save the MAC address (6 bytes...


Simple filesystem for embedded platform

Started by pozz in comp.arch.embedded6 months ago 9 replies

I'm using lwip that runs httpd over LPC1769 MCU. Now the filesystem for httpd can't fit the internal Flash memory anymore. So I'm going to use...

I'm using lwip that runs httpd over LPC1769 MCU. Now the filesystem for httpd can't fit the internal Flash memory anymore. So I'm going to use an external SPI Flash memory. I need some suggestions about a filesystem to use. I need: - a tool that creates a binary (or Intel HEX) image from a folder on my Windows development machine (the image will be downloaded to Flash); - file ma...


driver allowing to define GPIO pin groups and control them via sysfs

Started by Anonymous in comp.arch.embedded6 months ago 4 replies

Hi, I'm developing a system based on Xilinx MPSoC chip, where multiple functionalities are controlled by AXI GPIO blocks. All those GPIO pins...

Hi, I'm developing a system based on Xilinx MPSoC chip, where multiple functionalities are controlled by AXI GPIO blocks. All those GPIO pins are accessible via sysfs interface. However, it is difficult to find the gpio chip and pin numbers from running Linux system. In the HDL design, the GPIO blocks are described by their names, but unfortunately those names are not propagated to


No Ethernet on RCM6750 after porting code from 5750

Started by pascas in comp.arch.embedded6 months ago

Hi, i have to port some code, which works on the RCM5750, to the RCM 6750. At the beginning I had some trouble with larger Arrays. Got the error...

Hi, i have to port some code, which works on the RCM5750, to the RCM 6750. At the beginning I had some trouble with larger Arrays. Got the error message "Out of variable data space", fixed it by using the far qualifier for a large array and resizing the rootspace from 0x04 to 0x06. I changed the size with changing the define ROOT_SIZE_4K=0x06. After that, I'm able to run the code without gett...


What is the best Microcontroller for interfacing the Matrix Display

Started by Anonymous in comp.arch.embedded6 months ago 8 replies

Hello All, My current project is to interface the display to the controller that gets the data through a Ethernet port and displays it on P10...

Hello All, My current project is to interface the display to the controller that gets the data through a Ethernet port and displays it on P10 LED display. I have a 16X32 P10 LED display. I have to make a 32X64 display with four such displays. The controller gets the data from either Zigbee or Ethernet (Using HTTP or TCP/IP protocol), extracts the information from the received packets and f...


Murray's 8051 Homepage is back!

Started by Anonymous in comp.arch.embedded6 months ago

Get Keil C source-code for 8051/8052 project from the updated 'Murray's Homepage' at https://8051.duenna.science/ If you find something useful,...

Get Keil C source-code for 8051/8052 project from the updated 'Murray's Homepage' at https://8051.duenna.science/ If you find something useful, then please spread the word.


Programming PICAXE and BASIC Stamp microcontrollers

Started by Peter Percival in comp.arch.embedded6 months ago 7 replies

Does anybody know if PICAXE or BASIC Stamp can be programmed in assembler or Forth (or anything but BASIC!)? -- -- Do, as a concession to...

Does anybody know if PICAXE or BASIC Stamp can be programmed in assembler or Forth (or anything but BASIC!)? -- -- Do, as a concession to my poor wits, Lord Darlington, just explain to me what you really mean. I think I had better not, Duchess. Nowadays to be intelligible is to be found out. -- Oscar Wilde, Lady Windermere's Fan


Copy to and execution from RAM

Started by Klaus Kragelund in comp.arch.embedded7 months ago 10 replies

Hi I am using a STM32 and I want to use the flash as storage, but I need the processor to keep running Writing to flash while execution from...

Hi I am using a STM32 and I want to use the flash as storage, but I need the processor to keep running Writing to flash while execution from flash will take about 20us for 16bit value and when the entire block is close to be filled up an erase of the block takes 20ms 20ms halt of code execution is not an option So, the plan is: Copy code that needs to run to RAM Move p


2nd CfP Ada-Europe 2018 Conference, Lisbon, Portugal

Started by Dirk Craeynest in comp.arch.embedded7 months ago

----------------------------------------------------------------------- 2nd Call for Papers ...

----------------------------------------------------------------------- 2nd Call for Papers 23rd International Conference on Reliable Software Technologies - Ada-Europe 2018 18-22 June 2018, Lisbon, Portugal http://www.ada-europe.org/conference2018 Organized by Univ. Lisboa a...


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