/*
* boot() - Runs through application firmware checking, and then boots
*
* INPUT
* none
* OUTPUT
* true/false whether boot was successful
*
*/
static bool boot(void)
{
if(magic_ok())
{
layout_home();
if(signatures_ok() == 0) /* Signature check failed */
{
delay_ms(500);
if(!confirm_without_button_request("Unofficial Firmware",
"Do you want to continue booting?"))
{
layout_simple_message("Boot Aborted");
goto cancel_boot;
}
layout_home();
}
led_func(CLR_RED_LED);
cm_disable_interrupts();
set_vector_table_application();
application_jump();
}
else
{
layout_simple_message("Please Reinstall Firmware");
goto cancel_boot;
}
cancel_boot:
return(false);
}
uint64_t time_get_ns() {
uint64_t result;
// keep calculating result until it is calculated without a rollover having
// happened
cm_disable_interrupts();
do {
result = (rollovers << 24) | (0xffffff - systick_get_value());
} while(check_rollover());
cm_enable_interrupts();
return result*125/9;
}
/*
* main - Bootstrap main entry function
*
* INPUT
* - argc: (not used)
* - argv: (not used)
* OUTPUT
* 0 when complete
*/
int main(int argc, char* argv[])
{
(void)argc;
(void)argv;
/* Main loop for bootloader to transition to next step */
cm_disable_interrupts();
set_vector_table_bootloader();
bootloader_jump();
bootstrap_halt();
return(0); /* Should never get here */
}
unsigned int usart_putc(char c)
{
cm_disable_interrupts();
unsigned int next = (tx_head + 1) % sizeof(tx_buf);
if (waiting_tx_bytes() == sizeof(tx_buf)) {
cm_enable_interrupts();
return 0;
}
tx_buf[tx_head] = c;
tx_head = next;
cm_enable_interrupts();
usart_enable_tx_interrupt(USART1);
return 1;
}
int dbg_serial_write( unsigned char *d, unsigned short n )
{
int res = 0;
cm_disable_interrupts();
res = dbg_fifo_write( &usart_tx_buf, d, n );
if( res && !(USART_CR1(DBG_USART) & USART_CR1_TXEIE) )
{
if( dbg_fifo_read_byte( &usart_tx_buf, &usart_data ) )
{
while( !(USART_SR(DBG_USART) & USART_SR_TXE) );///пока буфер не пуст
usart_send(DBG_USART, usart_data);
usart_enable_tx_interrupt(DBG_USART);
}
}
cm_enable_interrupts();
return res;
}
int main(void)
{
cm_disable_interrupts();
clk_tree_setup();
mco_setup();
clock_setup();
usb_setup();
cli_setup();
pwm_init();
led_setup();
button_setup();
ncn_setup();
cm_enable_interrupts();
while (1) {
__WFI();
}
return 0;
}
int dbg_serial_read( unsigned char *d, unsigned short n )
{
int res;
res = 0;
while( n-- )
{
cm_disable_interrupts();
if( dbg_fifo_read_byte( &usart_rx_buf, d ) )
{
cm_enable_interrupts();
d++;
res++;
}
else
{
cm_enable_interrupts();
break;
}
}
return res;
}
void disable_interrupts() {
cm_disable_interrupts();
}
void sys_tick_handler(void) {
cm_disable_interrupts();
check_rollover();
cm_enable_interrupts();
}
void cpu_disable_int( void )
{
cm_disable_interrupts();
}
