Crosscompiling for ARM: reloc type R_ARM_ABS32 is not supported for PIC - how to solve ?

Started by Prijazen Dom in comp.arch.embedded2 years ago 2 replies

I'm trying to crosscompile MQTT client for ARM platform. At the final step, creation of binaries, the system reports errors below. I guess that...

I'm trying to crosscompile MQTT client for ARM platform. At the final step, creation of binaries, the system reports errors below. I guess that I overlooked something... What could be the reason ? I'm not sure whether this is the problem of program I compile, or toolchain or any setting ? Thanks in advance, regards, R. Log : .... ... arm-2010q1/arm-uclinuxeabi/bin/elf2flt: error: re...


Simulator for embedded systems

Started by pozz in comp.arch.embedded2 years ago 5 replies

Usually I can build my projects for embedded platforms for target board and for mingw compiler under Windows. Of course I simulate hw...

Usually I can build my projects for embedded platforms for target board and for mingw compiler under Windows. Of course I simulate hw peripherals (UART, LEDs, and so on) in some way. I usually have a debug console where I can type some commands to simulate something. For example, if I have analog inputs, I can type the command an1 300 to simulate the ADC result (300pt) for analo...


Speakers

Started by Rick C in comp.arch.embedded2 years ago 15 replies

What do they use in cell phones for speakers? I need something that will produce 90 dB at 10 cm at 250 Hz and should not be so large. The...

What do they use in cell phones for speakers? I need something that will produce 90 dB at 10 cm at 250 Hz and should not be so large. The inexpensive devices I find are either not so small (under 2") or have no low end, duh. But they have great speakers in cell phones and I know they squeeze on the buckaroonies big time. How do they do it? Is it about creating speaker cabine


AKM Factory Fire Shuts Down Production of Many Audio Products

Started by Rick C in comp.arch.embedded2 years ago 1 reply

https://www.prosoundnetwork.com/business/akm-factory-fire-shakes-up-pro-audio-industry I got wind of this right away, but it didn't occur to me...

https://www.prosoundnetwork.com/business/akm-factory-fire-shakes-up-pro-audio-industry I got wind of this right away, but it didn't occur to me to post it here until now. I found out because I use one of their 20 pin parts on a board. A broker found that someplace and called me asking if I wanted to sell my inventory. What inventory? I don't inventory parts. Too bad. I even designe...


Bug tracking tools

Started by Don Y in comp.arch.embedded2 years ago

What tools do folks use to actively track bugs? I've been using GNATS for ~25 years (so have a large "history file" for my various projects,...

What tools do folks use to actively track bugs? I've been using GNATS for ~25 years (so have a large "history file" for my various projects, over the years). Presently, I release incremental "dumps" of pertinent portions to folks who are leeching off my codebase (no real-time access to my sources remotely -- nor is there a desire for same!) so they can see what's been uncovered and repair...


HD44780 / ST7066U Initialization

Started by Rick C in comp.arch.embedded2 years ago 14 replies

I working with an LCD display using this chip which is apparently function compatible with the ubiquitous HD44780 LCD controller. The...

I working with an LCD display using this chip which is apparently function compatible with the ubiquitous HD44780 LCD controller. The initialization sequence is a set of commands because no one trusts the internal power up reset. Rather than an MCU this will be driven from an FPGA with a repeating sequence, so I'd like to eliminate anything that is not important in the commands.


Adding the new "USB CUSTOM CLASS" template to CubeMX for STM32?

Started by Wojciech Zabolotny in comp.arch.embedded2 years ago

When preparing nonstandard USB firmwares for STM32 microcontrollers, it would be perfect to have a possibility to use a "CUSTOM CLASS", in "Class...

When preparing nonstandard USB firmwares for STM32 microcontrollers, it would be perfect to have a possibility to use a "CUSTOM CLASS", in "Class for FS IP" list in CubeMX. Unfortunately it is not available. I have taken a look into CubeMX, and have found that for example the CUSTOM HID class is implemented in the following way: In the USB_DEVICE_-STM32???_Configs.xml file there are the follo...


Rockchip RK3399. Is it possible to run SPI at 16 MHz?

Started by Wojciech Zabolotny in comp.arch.embedded2 years ago 1 reply

Hi, I need to control a board (WiFi HaLow based on NRC7292 chipset) from an RK3399-based system (currently Rockpi N10) After tests it appeared...

Hi, I need to control a board (WiFi HaLow based on NRC7292 chipset) from an RK3399-based system (currently Rockpi N10) After tests it appeared that this board requires the SPI clock frequency to be 16 MHz. Other frequencies result in communication errors. Details of my tests are available here: https://github.com/newracom/nrc7292_sw_pkg/issues/5 Unfortunately, it seems that RK3399 is able to ...


Power On Self Test

Started by pozz in comp.arch.embedded2 years ago 25 replies

I'd like to implement a Power On Self Test to be sure all (or many) parts of the electronics are functioning well. The tests to be done to...

I'd like to implement a Power On Self Test to be sure all (or many) parts of the electronics are functioning well. The tests to be done to check external hardware depends on the actual hardware that is present. What about the MCU that features an internal Flash (where is the code) and RAM and some peripherals? Are there any strategies to test if the internal RAM or Flash are good? Do...


Testing watchdog

Started by pozz in comp.arch.embedded2 years ago 13 replies

I usually enable watchdog during boot init code. I usually use the internal watchdog that is available in the MCU I'm using. I know an...

I usually enable watchdog during boot init code. I usually use the internal watchdog that is available in the MCU I'm using. I know an external watchdog can be more secure, but internal watchdog is usually better than nothing. Some MCUs can be programmed to enable watchdog immediately after reset and stays enabled forever. Other times I enable watchdog timer immediately after some ini...


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