embedded

I need to calculate the distance between GPS co-ordinates to calculate distance traveled. I've tried both the Haversine and Vincenty algorithms, which work fine on my desktop PC, but when I port the code to the dsPIC, they return 0 for points that are close (within several meters) due to a lack of floating point precision and poor implementations of sin and cos. For my use case, my points will be no more than 10 meters apart and will all fall within 10km of each other. I've tried the following algorithm and the results seem ok: double dist(double latA, double lonA, double latB, double lonB) {

Problem: The firmware image generated when linking with a static library is different to the firmware image generated when linking with the objects directly extracted from the static library. Both firmware images link without error and load successfully onto the microcontroller. The latter binary (linked with objects) executes successfully and as expected, while the former (linked to the static library) does not. The only warnings during compilation are unused-but-set-variable in the manufacturer-supplied HAL, which due to various macro definitions are not necessary for the compiled

I'm using a Custom s'print DPT100-S thermal printer to made a receipt printing application. It is able to print graphics using 384 pixels in one line. This data has to be passed on to the printer using 48 bytes (48x8=384). So, each 'bit' represents one dot to be printed (bit will be '0' for white and '1' for black). So, I need to create a program which will read a monochrome BMP generated in Windows Paint(or any other program) and convert it into this bit format using a C program in Linux. Please guide me. Pseudo code: Read BMP For each row in BMP For each group of 8 pixels in row output_byte

Needed to find a way to create a "Kiosk mode" Windows 8 phone Application. After one and a half weeks of google intensive search, i've realized it is not possible to do. Then - Found two ways to workaround the problem - Kid's Corner. Windows 8 Embedded Handheld o.s. The second solution looks better to me. i've found the Windows 8 Embedded Handheld SDK, and now i have the ability to start coding. but, one second before i start, i couldn't find any device who supports this o.s (?!?) does some one know any device? thank. Panasonic allegedly have a device due out in June 2014. http://akihabaranews

Can chrono be used as a timer/counter in a bare-metal microcontroller (e.g. MSP432 running an RTOS)? Can the high_resolution_clock (and other APIs in chrono) be configured so that it increments based on the given microcontroller's actual timer tick/register? The Real-Time C++ book (section 16.5) seems to suggest this is possible, but I haven't found any examples of this being applied, especially within bare-metal microcontrollers. How could this be implemented? Would this be even recommended? If not, where can chrono aid in RTOS-based embedded software? I would create a clock that implements