main.c File Reference

Print system clock and bus clocks over UART2. More...

#include "navhal.h"

Include dependency graph for main.c:

Macros
#define	CORTEX_M4

Functions
int	main (void)

Variables
hal_pll_config_t	pll_cfg
	PLL configuration: 8 MHz HSE -> 168 MHz system clock.
hal_clock_config_t	cfg
	System clock source configuration.

Detailed Description

Print system clock and bus clocks over UART2.

This example demonstrates:

• Initializing the PLL for system clock configuration.
• Initializing SysTick timer.
• Initializing UART2 at 9600 baud for console output.
• Printing SYSCLK, AHBCLK, APB1CLK, and APB2CLK periodically.

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Macro Definition Documentation

CORTEX_M4

#define CORTEX_M4

Function Documentation

main()

int main

(

void

)

< Initialize system clock with PLL

< Initialize SysTick with 40 µs tick

< Initialize UART2 at 9600 baud

< Print SYSCLK label

< Print system clock

< Print APB1CLK label

< Print APB1 clock

< Print APB2CLK label

< Print APB2 clock

< Print AHBCLK label

< Print AHB clock

< Newline

< Wait 1 second

Variable Documentation

cfg

hal_clock_config_t cfg

Initial value:

= {
    .source = HAL_CLOCK_SOURCE_PLL 
}

System clock source configuration.

pll_cfg

hal_pll_config_t pll_cfg

Initial value:

= {
    .input_src = HAL_CLOCK_SOURCE_HSE, 
    .pll_m = 8,                        
    .pll_n = 168,                      
    .pll_p = 2,                        
    .pll_q = 7                         
}

PLL configuration: 8 MHz HSE -> 168 MHz system clock.