blob: bb63a9481445930dd9bd901cef1f5f1b18493aad (
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
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
|
#include "d51_util.h"
//Display unsigned 32-bit number through m15
//Read as follows: 1230 = || ||| |||| | (note always ending toggle)
void m15_print(uint32_t x)
{
int8_t t;
uint32_t n;
uint32_t p, p2;
if (x < 10) t = 0;
else if (x < 100) t = 1;
else if (x < 1000) t = 2;
else if (x < 10000) t = 3;
else if (x < 100000) t = 4;
else if (x < 1000000) t = 5;
else if (x < 10000000) t = 6;
else if (x < 100000000) t = 7;
else if (x < 1000000000) t = 8;
else t = 9;
while (t >= 0)
{
p2 = t;
p = 1;
while (p2--) p *= 10;
n = x / p;
x -= n * p;
while (n > 0)
{
m15_on;
n--;
m15_off;
}
//Will always end with an extra toggle
m15_on;
t--;
m15_off;
}
}
//Display unsigned 32-bit number through debug led
//Read as follows: 1230 = [*] [* *] [* * *] [**] (note zero is fast double flash)
#define DLED_ONTIME 1000000
#define DLED_PAUSE 1500000
volatile uint32_t w;
void dled_print(uint32_t x, uint8_t long_pause)
{
int8_t t;
uint32_t n;
uint32_t p, p2;
if (x < 10) t = 0;
else if (x < 100) t = 1;
else if (x < 1000) t = 2;
else if (x < 10000) t = 3;
else if (x < 100000) t = 4;
else if (x < 1000000) t = 5;
else if (x < 10000000) t = 6;
else if (x < 100000000) t = 7;
else if (x < 1000000000) t = 8;
else t = 9;
while (t >= 0)
{
p2 = t;
p = 1;
while (p2--) p *= 10;
n = x / p;
x -= n * p;
if (!n)
{
led_on;
for (w = DLED_ONTIME / 4; w; w--);
led_off;
for (w = DLED_ONTIME / 4; w; w--);
led_on;
for (w = DLED_ONTIME / 4; w; w--);
led_off;
for (w = DLED_ONTIME / 4; w; w--);
n--;
}
else
{
while (n > 0)
{
led_on;
for (w = DLED_ONTIME; w; w--);
led_off;
for (w = DLED_ONTIME / 2; w; w--);
n--;
}
}
for (w = DLED_PAUSE; w; w--);
t--;
}
if (long_pause)
{
for (w = DLED_PAUSE * 4; w; w--);
}
}
#ifdef DEBUG_BOOT_TRACING
volatile uint32_t debug_code;
void EIC_15_Handler()
{
//This is only for non-functional keyboard troubleshooting and should be disabled after boot
//Intention is to lock up the keyboard here with repeating debug led code
while (1)
{
dled_print(debug_code, 1);
}
}
void debug_code_init(void)
{
DBGC(DC_UNSET);
//Configure Ports for EIC on PB31
PORT->Group[1].DIRCLR.reg = 1 << 31; //Input
PORT->Group[1].OUTSET.reg = 1 << 31; //High
PORT->Group[1].PINCFG[31].bit.INEN = 1; //Input Enable
PORT->Group[1].PINCFG[31].bit.PULLEN = 1; //Pull Enable
PORT->Group[1].PINCFG[31].bit.PMUXEN = 1; //Mux Enable
PORT->Group[1].PMUX[15].bit.PMUXO = 0; //Mux A
//Enable CLK_EIC_APB
MCLK->APBAMASK.bit.EIC_ = 1;
//Configure EIC
EIC->CTRLA.bit.SWRST = 1;
while (EIC->SYNCBUSY.bit.SWRST) {}
EIC->ASYNCH.reg = 1 << 15;
EIC->INTENSET.reg = 1 << 15;
EIC->CONFIG[1].bit.SENSE7 = 2;
EIC->CTRLA.bit.ENABLE = 1;
while (EIC->SYNCBUSY.bit.ENABLE) {}
//Enable EIC IRQ
NVIC_EnableIRQ(EIC_15_IRQn);
}
void debug_code_disable(void)
{
//Disable EIC IRQ
NVIC_DisableIRQ(EIC_15_IRQn);
//Disable EIC
EIC->CTRLA.bit.ENABLE = 0;
while (EIC->SYNCBUSY.bit.ENABLE) {}
//Disable CLK_EIC_APB
MCLK->APBAMASK.bit.EIC_ = 0;
}
#else
void debug_code_init(void) {}
void debug_code_disable(void) {}
#endif //DEBUG_BOOT_TRACING
|
