microcontroller

I am working on an embedded device (microcontroller), and I want to save objects to permanent storage (an EEPROM). Most of the serialization solutions I can find, use the file-system in some way, but my target has no file-system. Therefore my question is, how can I serialize an object to a byte-array so I can save that byte-array to an EEPROM afterwards? Here is an example of what i am trying to do: class Person{ //Constructor, getters and setters are omitted void save(){ char buffer[sizeof(Person)]; serialize(buffer); EEPROM::Save(buffer, sizeof(Person)); } void load(){ char buffer[sizeof

The GSM modem I have is set to 115200 baud-rate by default. I have PIC18 Microcontroller connected to it with 19200 baud-rate. I changed the modem baud-rate to 19200 then saved the settings but every time I reset the modem, the baud-rate changes back to 115200. These are the following commands I used. Change baudrate AT+IPR=19200 Then I reopened the hyper-terminal (Putty) with 19200 baud-rate to save the current settings. Save settings AT&W But upon reset of the modem, the baud-rate changes back to 115200. I am using M6000 GSM/GPS Module(Tk115 Gps Tracker) but there isn't a lot of support for

I am new to the world of STM32F103. I have a demo code for STM32F103 and I am using arm-none-eabi to compile it. I tried what I could find on Google, but nothing worked so far. I have already spent three days on the problem. Anyone can give me a demo code for printf which works well? Part of my makefile: CFLAG = -mcpu=$(CPU) -mthumb -Wall -fdump-rtl-expand -specs=nano.specs --specs=rdimon.specs -Wl,--start-group -lgcc -lc -lm -lrdimon -Wl,--end-group LDFLAG = -mcpu=$(CPU) -T ./stm32_flash.ld -specs=nano.specs --specs=rdimon.specs -Wl,--start-group -lgcc -lc -lm -lrdimon -Wl,--end-group SamR

From what I've read, the solution to my problem is to use an interrupt, but if I understand them correctly, I can't use a delay in the routine that gets called by the interrupt. I've got a large pushbutton LED switch. I want it to have a heartbeat while sitting idle, but once it's pushed, stay green and execute code. I can break the heartbeat() if I push the button enough times (I assume getting the state change at just the right time as it finishes a loop of the heartbeat ), but I'm stuck on how to make it work on the first click. Is there an alternative way to do what I'm attempting? void

I am very new to Microcontroller programming particularly PIC18F87J11 , and I am using MPLAB C18 compiler. I was reading the datasheet for various topics such as saving to memory or working with timers. I noticed the examples are written in assembly language, but I have minimum experience with it. Is there a way to use the power of Assembly and C together in my project? I do not understand assembly that good or else I would try to convert the code to C, in this case, I rather just use the assembly code with few changes. Now can someone show me an example of how you would use an assembly

I have been struggling with a script that will turn a Pi's BCM pins 17, 27, and 10 on for 1 second then off for 1 second sequentially 100ish times. When I run the script LED1 will turn on and then it turns off and the program shuts down with this error: Traceback (most recent call last): File "LedBlink.py", line 47, in <module> LED2Blink() File "LedBlink.py", line 27, in LED2Blink GPIO.setup(LED2, GPIO.OUT) RuntimeError: Please set pin numbering mode using GPIO.setmode(GPIO.BOARD) or GPIO.setmode(GPIO.BCM) import RPi.GPIO as GPIO import time LED1 = 17 LED2 = 27 LED3 = 10 GPIO.setmode(GPIO.BCM)