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#include "project.h"
extern uint32_t dfu_flag;
void
sys_tick_handler (void)
{
uint8_t d;
while (!ring_read_byte(&rx_ring,&d))
kvm_recv(d);
led_tick();
}
int
main (void)
{
int i;
// rcc_clock_setup_in_hsi_out_48mhz ();
//nvic_set_priority_grouping(NVIC_PriorityGroup_4);
rcc_clock_setup_in_hse_8mhz_out_72mhz();
rcc_periph_clock_enable (RCC_GPIOA);
rcc_periph_clock_enable (RCC_GPIOB);
rcc_periph_clock_enable (RCC_GPIOC);
rcc_periph_clock_enable (RCC_AFIO);
rcc_periph_clock_enable (RCC_USART1);
usart_init ();
usb_init ();
systick_set_clocksource (STK_CSR_CLKSOURCE_AHB_DIV8);
/* 48MHz / 8 = > 6Mhz */
systick_set_reload (6000);
/* 6MHz / 6000 => 1kHz */
systick_interrupt_enable ();
systick_counter_enable ();
nvic_set_priority(NVIC_USART1_IRQ, 0x40);
nvic_set_priority(NVIC_SYSTICK_IRQ, 0xff);
//nvic_set_priority(SysTick_IRQn, NVIC_EncodePriority(4,0,0));
//nvic_set_priority(USART1_IRQn, NVIC_EncodePriority(4,1,0));
gpio_set (GPIOC, GPIO11);
gpio_set_mode (GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
gpio_set_mode (GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode (GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO9);
led_clear();
for (i = 0; i < 0x80000; i++)
__asm__ ("nop");
gpio_clear (GPIOC, GPIO11);
printf ("Hello world main=%p\r\n", main);
printf ("dfu_flag=%08lx\r\n", dfu_flag);
usb_run ();
return 0;
}
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