Hello,
I'm trying to create a project from scratch and write my own drivers. I have strong background in C but unfortunately I don't know anything about assembly.
I could use a little help to understand the base of the projects / examples that are provided by nRF5 SDK.
I'm using the Segger Embedded Studio. My current version is:
SEGGER Embedded Studio for ARM
Release 4.50 Build 2020021311.41397
Windows x64
First I created a new Project.
File > New Project > Create the project in a new solution > A C/C++ executable for a Cortex-M processor executing from FLASH memory > "Selecting my part number" nRF52832_xxAA > FINISH.
Then I got the file setup you can see in the picture below.
Now, this project runs the main() fine on my nRF52832 module.
The main.c file contains:
File : main.c
Purpose : Generic application start
*/
#include <stdio.h>
#include <stdlib.h>
/*********************************************************************
*
* main()
*
* Function description
* Application entry point.
*/
void main(void) {
int i;
for (i = 0; i < 100; i++) {
printf("Hello World %d!\n", i);
}
do {
i++;
} while (1);
}
/*************************** End of file ****************************/
And I saw in debugging printing the "Hello world" as expected.
Now to the question:
Question1: I see different assembly files than the examples have. As long as the project above builds and runs fine can I add my own C code on top of it?
Initializing clocks, etc...
In the examples (to be exact in peripheral/uart example) I saw 3 different assembly files.
ses_startup_nrf_common.s
ses_startup_nrf51.s
thumb.crt0.s
Question 2: What's the difference between them? Do I have to use them or I can just use the ones the Segger Embedded Studio generated?
