blob: 115a1df1a315313f5fef9ff6f2f92696824dc8f0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
#include "project.h"
extern uint32_t dfu_flag;
void
sys_tick_handler (void)
{
uint8_t d;
while (!ring_read_byte(&rx1_ring,&d))
kvm_recv(d);
while (!ring_read_byte(&rx2_ring,&d))
kvm_recv(d);
led_tick();
}
int
main (void)
{
// rcc_clock_setup_in_hsi_out_48mhz ();
//nvic_set_priority_grouping(NVIC_PriorityGroup_4);
/*set up pll*/
rcc_clock_setup_in_hse_8mhz_out_72mhz();
/*turn on clocks to periferals*/
rcc_periph_clock_enable (RCC_GPIOA);
rcc_periph_clock_enable (RCC_GPIOB);
rcc_periph_clock_enable (RCC_GPIOC);
rcc_periph_clock_enable (RCC_USART1);
rcc_periph_clock_enable (RCC_USART2);
rcc_periph_clock_enable (RCC_USART3);
rcc_periph_clock_enable (RCC_AFIO);
led_init();
usart_init ();
usb_init ();
/*Start periodic timer*/
systick_set_clocksource (STK_CSR_CLKSOURCE_AHB_DIV8);
/* 48MHz / 8 = > 6Mhz */
systick_set_reload (6000);
/* 6MHz / 6000 => 1kHz */
systick_interrupt_enable ();
systick_counter_enable ();
/*Adjust interrupt priorities so that uarts trump timer*/
nvic_set_priority(NVIC_USART1_IRQ, 0x40);
nvic_set_priority(NVIC_USART2_IRQ, 0x40);
nvic_set_priority(NVIC_USART3_IRQ, 0x40);
nvic_set_priority(NVIC_SYSTICK_IRQ, 0xff);
led_clear();
#if 0
/*GPIO C11 was used to determine if we should enter dfu */
/*now we use a ramdom address in ram*/
gpio_set (GPIOC, GPIO11);
gpio_set_mode (GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
{
int i;
for (i = 0; i < 0x80000; i++)
__asm__ ("nop");
}
gpio_clear (GPIOC, GPIO11);
#endif
printf ("stm32_usb_kvm:\r\n");
printf ("dfu_flag=%08lx\r\n", dfu_flag);
usb_run ();
return 0;
}
|
