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fixed compiling under ubuntu with devkitARM_r41
[proxmark3-svn] / armsrc / util.c
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e30c654b 1//-----------------------------------------------------------------------------
e30c654b 2// Jonathan Westhues, Sept 2005
bd20f8f4 3//
4// This code is licensed to you under the terms of the GNU GPL, version 2 or,
5// at your option, any later version. See the LICENSE.txt file for the text of
6// the license.
7//-----------------------------------------------------------------------------
8// Utility functions used in many places, not specific to any piece of code.
e30c654b 9//-----------------------------------------------------------------------------
bd20f8f4 10
e30c654b 11#include "proxmark3.h"
f7e3ed82 12#include "util.h"
9ab7a6c7 13#include "string.h"
e30c654b 14
81cd0474 15uint32_t SwapBits(uint32_t value, int nrbits) {
16 int i;
17 uint32_t newvalue = 0;
18 for(i = 0; i < nrbits; i++) {
19 newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
20 }
21 return newvalue;
22}
23
f7e3ed82 24void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
e30c654b 25{
26 while (len--) {
f7e3ed82 27 dest[len] = (uint8_t) n;
e30c654b 28 n >>= 8;
29 }
30}
31
f7e3ed82 32uint64_t bytes_to_num(uint8_t* src, size_t len)
e30c654b 33{
34 uint64_t num = 0;
35 while (len--)
36 {
37 num = (num << 8) | (*src);
38 src++;
39 }
40 return num;
41}
42
43void LEDsoff()
44{
45 LED_A_OFF();
46 LED_B_OFF();
47 LED_C_OFF();
48 LED_D_OFF();
49}
50
51// LEDs: R(C) O(A) G(B) -- R(D) [1, 2, 4 and 8]
52void LED(int led, int ms)
53{
54 if (led & LED_RED)
55 LED_C_ON();
56 if (led & LED_ORANGE)
57 LED_A_ON();
58 if (led & LED_GREEN)
59 LED_B_ON();
60 if (led & LED_RED2)
61 LED_D_ON();
62
63 if (!ms)
64 return;
65
66 SpinDelay(ms);
67
68 if (led & LED_RED)
69 LED_C_OFF();
70 if (led & LED_ORANGE)
71 LED_A_OFF();
72 if (led & LED_GREEN)
73 LED_B_OFF();
74 if (led & LED_RED2)
75 LED_D_OFF();
76}
77
78
79// Determine if a button is double clicked, single clicked,
80// not clicked, or held down (for ms || 1sec)
81// In general, don't use this function unless you expect a
82// double click, otherwise it will waste 500ms -- use BUTTON_HELD instead
83int BUTTON_CLICKED(int ms)
84{
85 // Up to 500ms in between clicks to mean a double click
86 int ticks = (48000 * (ms ? ms : 1000)) >> 10;
87
88 // If we're not even pressed, forget about it!
89 if (!BUTTON_PRESS())
90 return BUTTON_NO_CLICK;
91
92 // Borrow a PWM unit for my real-time clock
93 AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
94 // 48 MHz / 1024 gives 46.875 kHz
95 AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
96 AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
97 AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
98
f7e3ed82 99 uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
e30c654b 100
101 int letoff = 0;
102 for(;;)
103 {
f7e3ed82 104 uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
e30c654b 105
106 // We haven't let off the button yet
107 if (!letoff)
108 {
109 // We just let it off!
110 if (!BUTTON_PRESS())
111 {
112 letoff = 1;
113
114 // reset our timer for 500ms
115 start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
116 ticks = (48000 * (500)) >> 10;
117 }
118
119 // Still haven't let it off
120 else
121 // Have we held down a full second?
f7e3ed82 122 if (now == (uint16_t)(start + ticks))
e30c654b 123 return BUTTON_HOLD;
124 }
125
126 // We already let off, did we click again?
127 else
128 // Sweet, double click!
129 if (BUTTON_PRESS())
130 return BUTTON_DOUBLE_CLICK;
131
132 // Have we ran out of time to double click?
133 else
f7e3ed82 134 if (now == (uint16_t)(start + ticks))
e30c654b 135 // At least we did a single click
136 return BUTTON_SINGLE_CLICK;
137
138 WDT_HIT();
139 }
140
141 // We should never get here
142 return BUTTON_ERROR;
143}
144
145// Determine if a button is held down
146int BUTTON_HELD(int ms)
147{
148 // If button is held for one second
149 int ticks = (48000 * (ms ? ms : 1000)) >> 10;
150
151 // If we're not even pressed, forget about it!
152 if (!BUTTON_PRESS())
153 return BUTTON_NO_CLICK;
154
155 // Borrow a PWM unit for my real-time clock
156 AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
157 // 48 MHz / 1024 gives 46.875 kHz
158 AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
159 AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
160 AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
161
f7e3ed82 162 uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
e30c654b 163
164 for(;;)
165 {
f7e3ed82 166 uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
e30c654b 167
168 // As soon as our button let go, we didn't hold long enough
169 if (!BUTTON_PRESS())
170 return BUTTON_SINGLE_CLICK;
171
172 // Have we waited the full second?
173 else
f7e3ed82 174 if (now == (uint16_t)(start + ticks))
e30c654b 175 return BUTTON_HOLD;
176
177 WDT_HIT();
178 }
179
180 // We should never get here
181 return BUTTON_ERROR;
182}
183
184// attempt at high resolution microsecond timer
185// beware: timer counts in 21.3uS increments (1024/48Mhz)
186void SpinDelayUs(int us)
187{
188 int ticks = (48*us) >> 10;
189
190 // Borrow a PWM unit for my real-time clock
191 AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
192 // 48 MHz / 1024 gives 46.875 kHz
193 AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
194 AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
195 AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
196
f7e3ed82 197 uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
e30c654b 198
199 for(;;) {
f7e3ed82 200 uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
201 if (now == (uint16_t)(start + ticks))
e30c654b 202 return;
203
204 WDT_HIT();
205 }
206}
207
208void SpinDelay(int ms)
209{
210 // convert to uS and call microsecond delay function
211 SpinDelayUs(ms*1000);
212}
213
214/* Similar to FpgaGatherVersion this formats stored version information
215 * into a string representation. It takes a pointer to the struct version_information,
216 * verifies the magic properties, then stores a formatted string, prefixed by
217 * prefix in dst.
218 */
219void FormatVersionInformation(char *dst, int len, const char *prefix, void *version_information)
220{
221 struct version_information *v = (struct version_information*)version_information;
222 dst[0] = 0;
223 strncat(dst, prefix, len);
224 if(v->magic != VERSION_INFORMATION_MAGIC) {
225 strncat(dst, "Missing/Invalid version information", len);
226 return;
227 }
228 if(v->versionversion != 1) {
229 strncat(dst, "Version information not understood", len);
230 return;
231 }
232 if(!v->present) {
233 strncat(dst, "Version information not available", len);
234 return;
235 }
236
237 strncat(dst, v->svnversion, len);
238 if(v->clean == 0) {
239 strncat(dst, "-unclean", len);
240 } else if(v->clean == 2) {
241 strncat(dst, "-suspect", len);
242 }
243
244 strncat(dst, " ", len);
245 strncat(dst, v->buildtime, len);
246}
9ca155ba
M
247
248// -------------------------------------------------------------------------
249// timer lib
250// -------------------------------------------------------------------------
251// test procedure:
252//
253// ti = GetTickCount();
254// SpinDelay(1000);
255// ti = GetTickCount() - ti;
256// Dbprintf("timer(1s): %d t=%d", ti, GetTickCount());
257
258void StartTickCount()
259{
260// must be 0x40, but on my cpu - included divider is optimal
261// 0x20 - 1 ms / bit
262// 0x40 - 2 ms / bit
263
0a39986e 264 AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST + 0x001D; // was 0x003B
9ca155ba
M
265}
266
267/*
268* Get the current count.
269*/
270uint32_t RAMFUNC GetTickCount(){
8f51ddb0 271 return AT91C_BASE_RTTC->RTTC_RTVR;// was * 2;
9ca155ba
M
272}
273
8f51ddb0
M
274// -------------------------------------------------------------------------
275// microseconds timer
276// -------------------------------------------------------------------------
277void StartCountUS()
278{
279 AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14);
280// AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC1XC1S_TIOA0;
281 AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
282
283 // fast clock
284 AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
285 AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK | // MCK(48MHz)/32 -- tick=1.5mks
286 AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR |
287 AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET;
288 AT91C_BASE_TC0->TC_RA = 1;
289 AT91C_BASE_TC0->TC_RC = 0xBFFF + 1; // 0xC000
290
291 AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS; // timer disable
292 AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_XC1; // from timer 0
293
294 AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN;
295 AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN;
296 AT91C_BASE_TCB->TCB_BCR = 1;
297}
298
299uint32_t RAMFUNC GetCountUS(){
300 return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10);
301}
302
303static uint32_t GlobalUsCounter = 0;
304
305uint32_t RAMFUNC GetDeltaCountUS(){
306 uint32_t g_cnt = GetCountUS();
307 uint32_t g_res = g_cnt - GlobalUsCounter;
308 GlobalUsCounter = g_cnt;
309 return g_res;
310}
311
312
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