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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
#include "gpio.h"
int main();
void spin();
/*
* Interrupt service routine handlers.
*/
const void* vectors[] __attribute__((section(".vectors"))) = {
(void *) 0x2000c000, /* Top of stack at top of sram1. 48k */
main, /* Reset handler */
spin, /* NMI */
spin, /* Hard Fault */
spin, /* MemManage */
spin, /* BusFault */
spin, /* UsageFault */
spin, /* Reserved */
spin, /* Reserved */
spin, /* Reserved */
spin, /* Reserved */
spin, /* SVCall */
spin, /* Debug */
spin, /* Reserved */
spin, /* PendSV */
spin, /* SysTick */
/* External interrupt handlers follow */
spin, /* 0 WWDG */
spin, /* 1 PVD */
spin, /* 2 TAMP_SAMP */
spin, /* 3 RTC_WKUP */
spin, /* 4 FLASH */
spin, /* 5 RCC */
spin, /* 6 EXTI0 */
spin, /* 7 EXTI1 */
spin, /* 8 EXTI2 */
spin, /* 9 EXTI3 */
spin, /* 10 EXTI4 */
spin, /* 11 DMA_CH1 */
spin, /* 12 DMA_CH2 */
spin, /* 13 DMA_CH3 */
spin, /* 14 DMA_CH4 */
spin, /* 15 DMA_CH5 */
spin, /* 16 DMA_CH6 */
spin, /* 17 DMA_CH7 */
spin, /* 18 ADC1 */
spin, /* 19 CAN_TX */
spin, /* 20 CAN_RX0 */
spin, /* 21 CAN_RX1 */
spin, /* 22 CAN_SCE */
spin, /* 23 EXTI9_5 */
spin, /* 24 TIM1_BRK/TIM15 */
spin, /* 25 TIM1_UP/TIM16 */
spin, /* 26 TIM1_TRG_COM */
spin, /* 27 TIM1_CC */
spin, /* 28 TIM2 */
spin, /* 29 Reserved */
spin, /* 30 Reserved */
spin, /* 31 I2C1_EV */
spin, /* 32 I2C1_ER */
spin, /* 33 I2C2_EV */
spin, /* 34 I2C2_ER */
spin, /* 35 SPI1 */
spin, /* 36 SPI2 */
spin, /* 37 USART1 */
spin, /* 38 USART2 */
spin, /* 39 USART3 */
spin, /* 40 EXTI15_10 */
spin, /* 41 RTCAlarm */
spin, /* 42 Reserved */
spin, /* 43 Reserved */
spin, /* 44 Reserved */
spin, /* 45 Reserved */
spin, /* 46 Reserved */
spin, /* 47 Reserved */
spin, /* 48 Reserved */
spin, /* 49 SDMMC1 */
spin, /* 50 Reserved */
spin, /* 51 SPI3 */
spin, /* 52 Reserved */
spin, /* 53 Reserved */
spin, /* 54 TIM6_DACUNDER */
spin, /* 55 TIM7 */
spin, /* 56 DMA2_CH1 */
spin, /* 57 DMA2_CH2 */
spin, /* 58 DMA2_CH3 */
spin, /* 59 DMA2_CH4 */
spin, /* 60 DMA2_CH5 */
spin, /* 61 Reserved */
spin, /* 62 Reserved */
spin, /* 63 Reserved*/
spin, /* 64 COMP */
spin, /* 65 LPTIM1 */
spin, /* 66 LPTIM2 */
spin, /* 67 USB_FS */
spin, /* 68 DMA_CH6 */
spin, /* 69 DMA_CH7 */
spin, /* 70 LPUART1 */
spin, /* 71 QUADSPI */
spin, /* 72 I2C3_EV */
spin, /* 73 I2C3_ER */
spin, /* 74 SAI1 */
spin, /* 75 Reserved */
spin, /* 76 SWPMI1 */
spin, /* 77 TSC */
spin, /* 78 Reserved */
spin, /* 79 AES */
spin, /* 80 RNG */
spin, /* 81 FPU */
spin /* 82 CRS */
};
/* Delay for some number of iterations. */
void delay(uint32_t itrs)
{
/* Need to keep the compiler from optimizing this loop out entirely. */
while(itrs --) {
asm volatile ("");
}
}
/* Main function. This gets executed from the interrupt vector defined above. */
int main()
{
/* Enable the GPIO port B. */
__IO gpio_port_t* port_b = enable_gpio(GPIO_PORT_B);
gpio_output_pin_t pin3 = set_gpio_pin_output(port_b, PIN_3);
gpio_output_pin_t pin1 = set_gpio_pin_output(port_b, PIN_1);
while(1) {
/* Set the GPIO pin to high. */
pin_on(pin3);
pin_off(pin1);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
/* Set the GPIO pin to low. */
pin_off(pin3);
pin_on(pin1);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
delay(65535);
}
}
/*
* Does nothing ... forever.
*/
void spin()
{
__IO gpio_port_t* port_b = enable_gpio(GPIO_PORT_B);
gpio_output_pin_t pin3 = set_gpio_pin_output(port_b, PIN_3);
for(;;) {
/* Flash in a distinct pattern to know that something went wrong. */
pin_off(pin3);
delay(100000);
pin_on(pin3);
delay(100000);
pin_off(pin3);
delay(100000);
pin_on(pin3);
delay(500000);
}
}
|
