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The Name Xt232

Fewdays back i lost all my blogs in a server crash and i had no backup, so i decided to try for all new portal with new domain name and all hosted in blogger (i guess hosting free with 99% uptime and secure from crash google blogger is best)

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Questions

1. What is a Stub function? Ans : A function without any definition which presents no error when called. 2. Why there are two ld scripts generated by STM32Cube IDE? Ans: The CubeIDE always presents two different LDscripts on for generating the executable for Debugging which goes to RAM another for normal code upload that goes to flash memory. 3. What is Supervisory Mode/ privileged mode ? Ans : When you are using a Kernel then there are two modes user mode and privileged mode. In User mode the applications cant have system calls. 4. What is "make -j6" ? Ans : Make has an argument for number of jobs, so when you add -j6 it will create 6 different compiler instances, so that the systems could use multicore to the fullest.  Linux people generally do add "-j $(nproc)" where nproc is a command line which returns number of processors attached. 5. What is weak attribute ? Ans : Weak attribute used to denote weak symbols which helps linkers to choose one function out of mul...
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#@$%

  #include  "msp430x21x2.h"     #define PWM_OUTPUT              0x03 #define DUTY_CYCLE              TA0CCR2 #define MAX_LIMIT               300   /* #define no_of_samples           1 #define duty_cycle_limit        1000 #define temp_sensor             0xA000   #define panel_selection_cutoff  250 */ #define PV_VOLTAGE              INCH_0 #define PV_CURRENT              INCH_1 #define BATT_VOLTAGE            INCH_2 #define BATT_CURRENT            INCH_3   #define UPPER_CRG_LVL           0x0105 // 0x00FF // 0x00F5 //0x023A #define LOWER_CRG_LVL   ...
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Preparing for embedded systems interview

  Preparing for a technical interview in embedded systems involves a wide range of topics, as the field encompasses both hardware and software components. Here are some key areas and example questions that you might encounter in such an interview: Basic Concepts and Theory: What is an embedded system? Can you explain the difference between a microprocessor and a microcontroller? Describe the various types of memory in an embedded system. Programming and Software Design: 4. How do you write an interrupt service routine in C? 5. Explain the concept of a real-time operating system (RTOS). How does it differ from a general-purpose operating system? 6. What are the different states of a thread in an RTOS? Hardware and Interfacing : 7. How does SPI communication work? What about I2C communication? 8. Explain the concept of GPIO (General-Purpose Input/Output). How would you use it in an embedded application? 9. What are interrupts, and how are they handled in embedded systems? Low-Level P...
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