/**
* Initializes the minimal system including CPU Clock, UART, and Flash accelerator
* Be careful of the order of operations!!!
*/
void low_level_init(void)
{
rtc_init();
m_rtc_boot_time = rtc_gettime();
/**
* Configure System Clock based on desired clock rate @ sys_config.h
* Setup default interrupt priorities that will work with FreeRTOS
*/
sys_clock_configure();
configure_flash_acceleration(sys_get_cpu_clock());
configure_interrupt_priorities();
__enable_irq();
// Setup UART with minimum I/O functions
uart0_init(UART0_DEFAULT_RATE_BPS);
sys_set_outchar_func(uart0_putchar);
sys_set_inchar_func(uart0_getchar);
/**
* If buffers are set to 0, so printf/scanf will behave correctly!
* If not set, then printf/scanf will have weird buffering/flushing effects
*/
setvbuf(stdout, 0, _IONBF, 0);
setvbuf(stdin, 0, _IONBF, 0);
/**
* Set the semaphore for the malloc lock.
* Initialize newlib fopen() fread() calls support
*/
syscalls_init();
/**
* Enable watchdog to allow us to recover in case of:
* - We attempt to run an application and it's not there
* - Application we ran crashes
*/
sys_watchdog_enable();
print_boot_info();
}
/**
* Initializes the minimal system including CPU Clock, UART, and Flash accelerator
* Be careful of the order of the operations!!!
*/
void low_level_init(void)
{
rtc_init();
g_rtc_boot_time = rtc_gettime();
/* Configure System Clock based on desired clock rate @ sys_config.h */
sys_clock_configure();
configure_flash_acceleration(sys_get_cpu_clock());
/* Setup default interrupt priorities that will work with FreeRTOS */
configure_interrupt_priorities();
/* These methods shouldn't be needed but doing it anyway to be safe */
NVIC_SetPriorityGrouping(0);
__set_BASEPRI(0);
__enable_fault_irq();
__enable_irq();
/* Setup UART with minimal I/O functions */
uart0_init(SYS_CFG_UART0_BPS);
sys_set_outchar_func(uart0_putchar);
sys_set_inchar_func(uart0_getchar);
/**
* Turn off I/O buffering otherwise sometimes printf/scanf doesn't behave
* correctly due to strange buffering and/or flushing effects.
*/
setvbuf(stdout, 0, _IONBF, 0);
setvbuf(stdin, 0, _IONBF, 0);
/* Initialize newlib fopen() fread() calls support */
syscalls_init();
/* Enable the watchdog to allow us to recover in an event of system crash */
sys_watchdog_enable();
/* Uart and printf() are initialized, so print our boot-up message */
print_boot_info();
}
/**
* Initializes the minimal system including CPU Clock, UART, and Flash accelerator
* Be careful of the order of operations!!!
*/
void low_level_init(void)
{
rtc_init();
g_rtc_boot_time = rtc_gettime();
/**
* Configure System Clock based on desired clock rate @ sys_config.h
* Setup default interrupt priorities that will work with FreeRTOS
*/
sys_clock_configure();
configure_flash_acceleration(sys_get_cpu_clock());
configure_interrupt_priorities();
__enable_irq();
// Setup UART with minimum I/O functions
uart0_init(UART0_DEFAULT_RATE_BPS);
sys_set_outchar_func(uart0_putchar);
sys_set_inchar_func(uart0_getchar);
/**
* Turn off I/O buffering otherwise sometimes printf/scanf doesn't behave
* correctly due to strange buffering and/or flushing effects.
*/
setvbuf(stdout, 0, _IONBF, 0);
setvbuf(stdin, 0, _IONBF, 0);
// Initialize newlib fopen() fread() calls support
syscalls_init();
/**
* Enable watchdog to allow us to recover in case of:
* - We attempt to run an application and it's not there
* - Application we ran crashes
*/
sys_watchdog_enable();
print_boot_info();
}
