/*! \brief Main function. Execution starts here.
*
* \retval 42 Fatal error.
*/
int main(void)
{
#ifndef FREERTOS_USED
Enable_global_exception();
INTC_init_interrupts();
#endif
pcl_switch_to_osc(PCL_OSC0, FOSC0, OSC0_STARTUP);
init_dbg_rs232(FOSC0);
pcl_configure_usb_clock();
usb_task_init();
#if USB_DEVICE_FEATURE == true
device_template_task_init();
#endif
#if USB_HOST_FEATURE == true
host_template_task_init();
#endif
#ifdef FREERTOS_USED
vTaskStartScheduler();
portDBG_TRACE("FreeRTOS returned.");
return 42;
#else
while (true)
{
usb_task();
#if USB_DEVICE_FEATURE == true
device_template_task();
#endif
#if USB_HOST_FEATURE == true
host_template_task();
#endif
}
#endif // FREERTOS_USED
}
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*/
int __low_level_init(void)
{
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
INTC_init_interrupts();
// Request initialization of data segments.
return 1;
}
/*! \brief Initializes MCU exceptions.
*/
static void init_exceptions(void)
{
#if __GNUC__ && __AVR32__
// Import the Exception Vector Base Address.
extern void _evba;
// Load the Exception Vector Base Address in the corresponding system
// register.
Set_system_register(AVR32_EVBA, (int)&_evba);
#endif
// Enable exceptions globally.
Enable_global_exception();
}
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*/
int __low_level_init(void)
{
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
INTC_init_interrupts();
// Initialize the USART used for the debug trace with the configured parameters.
extern volatile avr32_usart_t *volatile stdio_usart_base;
stdio_usart_base = DBG_USART;
// Request initialization of data segments.
return 1;
}
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*
* This version comes in replacement to the default one provided by the Newlib
* add-ons library.
* Newlib add-ons' _init_startup only calls init_exceptions, but Newlib add-ons'
* exception and interrupt vectors are defined in the same section and Newlib
* add-ons' interrupt vectors are not compatible with the interrupt management
* of the INTC module.
* More low-level initializations are besides added here.
*/
int _init_startup(void)
{
// Import the Exception Vector Base Address.
extern void _evba;
// Load the Exception Vector Base Address in the corresponding system register.
Set_system_register(AVR32_EVBA, (int)&_evba);
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
INTC_init_interrupts();
// Don't-care value for GCC.
return 1;
}
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*
* This version comes in replacement to the default one provided by the Newlib
* add-ons library.
* Newlib add-ons' _init_startup only calls init_exceptions, but Newlib add-ons'
* exception and interrupt vectors are defined in the same section and Newlib
* add-ons' interrupt vectors are not compatible with the interrupt management
* of the INTC module.
* More low-level initializations are besides added here.
*/
int _init_startup(void)
{
// Import the Exception Vector Base Address.
extern void _evba;
// Load the Exception Vector Base Address in the corresponding system register.
Set_system_register(AVR32_EVBA, (int)&_evba);
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
INTC_init_interrupts();
// Initialize the USART used for the debug trace with the configured parameters.
set_usart_base( ( void * ) DBG_USART );
// Don't-care value for GCC.
return 1;
}
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*
* This version comes in replacement to the default one provided by the Newlib
* add-ons library.
* Newlib add-ons' _init_startup only calls init_exceptions, but Newlib add-ons'
* exception and interrupt vectors are defined in the same section and Newlib
* add-ons' interrupt vectors are not compatible with the interrupt management
* of the INTC module.
* More low-level initializations are besides added here.
*/
int _init_startup(void)
{
// Import the Exception Vector Base Address.
extern void _evba;
// Load the Exception Vector Base Address in the corresponding system register.
Set_system_register(AVR32_EVBA, (int)&_evba);
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
INTC_init_interrupts();
// Give the used CPU clock frequency to Newlib, so it can work properly.
set_cpu_hz(pcl_freq_param.pba_f);
// Initialize the USART used for the debug trace with the configured parameters.
set_usart_base( ( void * ) DBG_USART );
// Don't-care value for GCC.
return 1;
}
/*! \brief Initializes STDIO.
*/
static void init_stdio(void)
{
#if (defined __GNUC__) && (defined __AVR32__)
static const gpio_map_t STDIO_USART_GPIO_MAP =
{
{STDIO_USART_RX_PIN, STDIO_USART_RX_FUNCTION},
{STDIO_USART_TX_PIN, STDIO_USART_TX_FUNCTION}
};
// Initialize the USART used for STDIO.
set_usart_base((void *)STDIO_USART);
gpio_enable_module(STDIO_USART_GPIO_MAP,
sizeof(STDIO_USART_GPIO_MAP) / sizeof(STDIO_USART_GPIO_MAP[0]));
usart_init(STDIO_USART_BAUDRATE);
#elif (defined __ICCAVR32__)
static const gpio_map_t STDIO_USART_GPIO_MAP =
{
{STDIO_USART_RX_PIN, STDIO_USART_RX_FUNCTION},
{STDIO_USART_TX_PIN, STDIO_USART_TX_FUNCTION}
};
static const usart_options_t STDIO_USART_OPTIONS =
{
.baudrate = STDIO_USART_BAUDRATE,
.charlength = 8,
.paritytype = USART_NO_PARITY,
.stopbits = USART_1_STOPBIT,
.channelmode = USART_NORMAL_CHMODE
};
// Initialize the USART used for STDIO.
extern volatile avr32_usart_t *volatile stdio_usart_base;
stdio_usart_base = STDIO_USART;
gpio_enable_module(STDIO_USART_GPIO_MAP,
sizeof(STDIO_USART_GPIO_MAP) / sizeof(STDIO_USART_GPIO_MAP[0]));
usart_init_rs232(STDIO_USART, &STDIO_USART_OPTIONS, FPBA_HZ);
#endif
}
#if (defined __GNUC__)
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*
* This version comes in replacement to the default one provided by the Newlib
* add-ons library.
* Newlib add-ons' _init_startup only calls init_exceptions, but Newlib add-ons'
* exception and interrupt vectors are defined in the same section and Newlib
* add-ons' interrupt vectors are not compatible with the interrupt management
* of the INTC module.
* More low-level initializations are besides added here.
*/
int _init_startup(void)
{
// Import the Exception Vector Base Address.
extern void _evba;
// Load the Exception Vector Base Address in the corresponding system register.
Set_system_register(AVR32_EVBA, (int)&_evba);
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
irq_initialize_vectors();
cpu_irq_enable();
init_stdio();
// Don't-care value for GCC.
return 1;
}
#elif (defined __ICCAVR32__)
/*! \brief Low-level initialization routine called during startup, before the
* main function.
*/
int __low_level_init(void)
{
// Enable exceptions.
Enable_global_exception();
// Initialize interrupt handling.
irq_initialize_vectors();
cpu_irq_enable();
init_stdio();
// Request initialization of data segments.
return 1;
}
static void init_exceptions(void)
{
extern void _evba;
Set_system_register(AVR32_EVBA, (int)&_evba);
Enable_global_exception();
}
