Initial commit of library code, moved from leaftest repo

git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123

20 files changed, 1603 insertions, 0 deletions

diff --git a/src/wiring/Print.cpp b/src/wiring/Print.cpp
new file mode 100644
index 0000000..20f5e40
--- /dev/null
+++ b/src/wiring/Print.cpp
@@ -0,0 +1,215 @@
+/*
+ Print.cpp - Base class that provides print() and println()
+ Copyright (c) 2008 David A. Mellis.  All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+ Modified 23 November 2006 by David A. Mellis
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include "wiring.h"
+
+#include "Print.h"
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+/* default implementation: may be overridden */
+void Print::write(const char *str)
+{
+  while (*str)
+    write(*str++);
+}
+
+/* default implementation: may be overridden */
+void Print::write(const uint8_t *buffer, size_t size)
+{
+  while (size--)
+    write(*buffer++);
+}
+
+void Print::print(uint8_t b)
+{
+  this->write(b);
+}
+
+void Print::print(char c)
+{
+  print((byte) c);
+}
+
+void Print::print(const char str[])
+{
+  write(str);
+}
+
+void Print::print(int n)
+{
+  print((long) n);
+}
+
+void Print::print(unsigned int n)
+{
+  print((unsigned long) n);
+}
+
+void Print::print(long n)
+{
+  if (n < 0) {
+    print('-');
+    n = -n;
+  }
+  printNumber(n, 10);
+}
+
+void Print::print(unsigned long n)
+{
+  printNumber(n, 10);
+}
+
+void Print::print(long n, int base)
+{
+  if (base == 0)
+    print((char) n);
+  else if (base == 10)
+    print(n);
+  else
+    printNumber(n, base);
+}
+
+void Print::print(double n)
+{
+  printFloat(n, 2);
+}
+
+void Print::println(void)
+{
+  print('\r');
+  print('\n');  
+}
+
+void Print::println(char c)
+{
+  print(c);
+  println();  
+}
+
+void Print::println(const char c[])
+{
+  print(c);
+  println();
+}
+
+void Print::println(uint8_t b)
+{
+  print(b);
+  println();
+}
+
+void Print::println(int n)
+{
+  print(n);
+  println();
+}
+
+void Print::println(unsigned int n)
+{
+  print(n);
+  println();
+}
+
+void Print::println(long n)
+{
+  print(n);
+  println();  
+}
+
+void Print::println(unsigned long n)
+{
+  print(n);
+  println();  
+}
+
+void Print::println(long n, int base)
+{
+  print(n, base);
+  println();
+}
+
+void Print::println(double n)
+{
+  print(n);
+  println();
+}
+
+// Private Methods /////////////////////////////////////////////////////////////
+
+void Print::printNumber(unsigned long n, uint8_t base)
+{
+  unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars. 
+  unsigned long i = 0;
+
+  if (n == 0) {
+    print('0');
+    return;
+  } 
+
+  while (n > 0) {
+    buf[i++] = n % base;
+    n /= base;
+  }
+
+  for (; i > 0; i--)
+    print((char) (buf[i - 1] < 10 ?
+      '0' + buf[i - 1] :
+      'A' + buf[i - 1] - 10));
+}
+
+void Print::printFloat(double number, uint8_t digits) 
+{ 
+  // Handle negative numbers
+  if (number < 0.0)
+  {
+     print('-');
+     number = -number;
+  }
+
+  // Round correctly so that print(1.999, 2) prints as "2.00"
+  double rounding = 0.5;
+  for (uint8_t i=0; i<digits; ++i)
+    rounding /= 10.0;
+  
+  number += rounding;
+
+  // Extract the integer part of the number and print it
+  unsigned long int_part = (unsigned long)number;
+  double remainder = number - (double)int_part;
+  print(int_part);
+
+  // Print the decimal point, but only if there are digits beyond
+  if (digits > 0)
+    print("."); 
+
+  // Extract digits from the remainder one at a time
+  while (digits-- > 0)
+  {
+    remainder *= 10.0;
+    int toPrint = int(remainder);
+    print(toPrint);
+    remainder -= toPrint; 
+  } 
+}
diff --git a/src/wiring/Print.h b/src/wiring/Print.h
new file mode 100644
index 0000000..a69e85d
--- /dev/null
+++ b/src/wiring/Print.h
@@ -0,0 +1,62 @@
+/*
+  Print.h - Base class that provides print() and println()
+  Copyright (c) 2008 David A. Mellis.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef Print_h
+#define Print_h
+
+#include <inttypes.h>
+#include <stdio.h> // for size_t
+
+#define DEC 10
+#define HEX 16
+#define OCT 8
+#define BIN 2
+#define BYTE 0
+
+class Print
+{
+  private:
+    void printNumber(unsigned long, uint8_t);
+    void printFloat(double, uint8_t);
+  public:
+    virtual void write(uint8_t) = 0;
+    virtual void write(const char *str);
+    virtual void write(const uint8_t *buffer, size_t size);
+    void print(char);
+    void print(const char[]);
+    void print(uint8_t);
+    void print(int);
+    void print(unsigned int);
+    void print(long);
+    void print(unsigned long);
+    void print(long, int);
+    void print(double);
+    void println(void);
+    void println(char);
+    void println(const char[]);
+    void println(uint8_t);
+    void println(int);
+    void println(unsigned int);
+    void println(long);
+    void println(unsigned long);
+    void println(long, int);
+    void println(double);
+};
+
+#endif
diff --git a/src/wiring/binary.h b/src/wiring/binary.h
new file mode 100644
index 0000000..af14980
--- /dev/null
+++ b/src/wiring/binary.h
@@ -0,0 +1,515 @@
+#ifndef Binary_h
+#define Binary_h
+
+#define B0 0
+#define B00 0
+#define B000 0
+#define B0000 0
+#define B00000 0
+#define B000000 0
+#define B0000000 0
+#define B00000000 0
+#define B1 1
+#define B01 1
+#define B001 1
+#define B0001 1
+#define B00001 1
+#define B000001 1
+#define B0000001 1
+#define B00000001 1
+#define B10 2
+#define B010 2
+#define B0010 2
+#define B00010 2
+#define B000010 2
+#define B0000010 2
+#define B00000010 2
+#define B11 3
+#define B011 3
+#define B0011 3
+#define B00011 3
+#define B000011 3
+#define B0000011 3
+#define B00000011 3
+#define B100 4
+#define B0100 4
+#define B00100 4
+#define B000100 4
+#define B0000100 4
+#define B00000100 4
+#define B101 5
+#define B0101 5
+#define B00101 5
+#define B000101 5
+#define B0000101 5
+#define B00000101 5
+#define B110 6
+#define B0110 6
+#define B00110 6
+#define B000110 6
+#define B0000110 6
+#define B00000110 6
+#define B111 7
+#define B0111 7
+#define B00111 7
+#define B000111 7
+#define B0000111 7
+#define B00000111 7
+#define B1000 8
+#define B01000 8
+#define B001000 8
+#define B0001000 8
+#define B00001000 8
+#define B1001 9
+#define B01001 9
+#define B001001 9
+#define B0001001 9
+#define B00001001 9
+#define B1010 10
+#define B01010 10
+#define B001010 10
+#define B0001010 10
+#define B00001010 10
+#define B1011 11
+#define B01011 11
+#define B001011 11
+#define B0001011 11
+#define B00001011 11
+#define B1100 12
+#define B01100 12
+#define B001100 12
+#define B0001100 12
+#define B00001100 12
+#define B1101 13
+#define B01101 13
+#define B001101 13
+#define B0001101 13
+#define B00001101 13
+#define B1110 14
+#define B01110 14
+#define B001110 14
+#define B0001110 14
+#define B00001110 14
+#define B1111 15
+#define B01111 15
+#define B001111 15
+#define B0001111 15
+#define B00001111 15
+#define B10000 16
+#define B010000 16
+#define B0010000 16
+#define B00010000 16
+#define B10001 17
+#define B010001 17
+#define B0010001 17
+#define B00010001 17
+#define B10010 18
+#define B010010 18
+#define B0010010 18
+#define B00010010 18
+#define B10011 19
+#define B010011 19
+#define B0010011 19
+#define B00010011 19
+#define B10100 20
+#define B010100 20
+#define B0010100 20
+#define B00010100 20
+#define B10101 21
+#define B010101 21
+#define B0010101 21
+#define B00010101 21
+#define B10110 22
+#define B010110 22
+#define B0010110 22
+#define B00010110 22
+#define B10111 23
+#define B010111 23
+#define B0010111 23
+#define B00010111 23
+#define B11000 24
+#define B011000 24
+#define B0011000 24
+#define B00011000 24
+#define B11001 25
+#define B011001 25
+#define B0011001 25
+#define B00011001 25
+#define B11010 26
+#define B011010 26
+#define B0011010 26
+#define B00011010 26
+#define B11011 27
+#define B011011 27
+#define B0011011 27
+#define B00011011 27
+#define B11100 28
+#define B011100 28
+#define B0011100 28
+#define B00011100 28
+#define B11101 29
+#define B011101 29
+#define B0011101 29
+#define B00011101 29
+#define B11110 30
+#define B011110 30
+#define B0011110 30
+#define B00011110 30
+#define B11111 31
+#define B011111 31
+#define B0011111 31
+#define B00011111 31
+#define B100000 32
+#define B0100000 32
+#define B00100000 32
+#define B100001 33
+#define B0100001 33
+#define B00100001 33
+#define B100010 34
+#define B0100010 34
+#define B00100010 34
+#define B100011 35
+#define B0100011 35
+#define B00100011 35
+#define B100100 36
+#define B0100100 36
+#define B00100100 36
+#define B100101 37
+#define B0100101 37
+#define B00100101 37
+#define B100110 38
+#define B0100110 38
+#define B00100110 38
+#define B100111 39
+#define B0100111 39
+#define B00100111 39
+#define B101000 40
+#define B0101000 40
+#define B00101000 40
+#define B101001 41
+#define B0101001 41
+#define B00101001 41
+#define B101010 42
+#define B0101010 42
+#define B00101010 42
+#define B101011 43
+#define B0101011 43
+#define B00101011 43
+#define B101100 44
+#define B0101100 44
+#define B00101100 44
+#define B101101 45
+#define B0101101 45
+#define B00101101 45
+#define B101110 46
+#define B0101110 46
+#define B00101110 46
+#define B101111 47
+#define B0101111 47
+#define B00101111 47
+#define B110000 48
+#define B0110000 48
+#define B00110000 48
+#define B110001 49
+#define B0110001 49
+#define B00110001 49
+#define B110010 50
+#define B0110010 50
+#define B00110010 50
+#define B110011 51
+#define B0110011 51
+#define B00110011 51
+#define B110100 52
+#define B0110100 52
+#define B00110100 52
+#define B110101 53
+#define B0110101 53
+#define B00110101 53
+#define B110110 54
+#define B0110110 54
+#define B00110110 54
+#define B110111 55
+#define B0110111 55
+#define B00110111 55
+#define B111000 56
+#define B0111000 56
+#define B00111000 56
+#define B111001 57
+#define B0111001 57
+#define B00111001 57
+#define B111010 58
+#define B0111010 58
+#define B00111010 58
+#define B111011 59
+#define B0111011 59
+#define B00111011 59
+#define B111100 60
+#define B0111100 60
+#define B00111100 60
+#define B111101 61
+#define B0111101 61
+#define B00111101 61
+#define B111110 62
+#define B0111110 62
+#define B00111110 62
+#define B111111 63
+#define B0111111 63
+#define B00111111 63
+#define B1000000 64
+#define B01000000 64
+#define B1000001 65
+#define B01000001 65
+#define B1000010 66
+#define B01000010 66
+#define B1000011 67
+#define B01000011 67
+#define B1000100 68
+#define B01000100 68
+#define B1000101 69
+#define B01000101 69
+#define B1000110 70
+#define B01000110 70
+#define B1000111 71
+#define B01000111 71
+#define B1001000 72
+#define B01001000 72
+#define B1001001 73
+#define B01001001 73
+#define B1001010 74
+#define B01001010 74
+#define B1001011 75
+#define B01001011 75
+#define B1001100 76
+#define B01001100 76
+#define B1001101 77
+#define B01001101 77
+#define B1001110 78
+#define B01001110 78
+#define B1001111 79
+#define B01001111 79
+#define B1010000 80
+#define B01010000 80
+#define B1010001 81
+#define B01010001 81
+#define B1010010 82
+#define B01010010 82
+#define B1010011 83
+#define B01010011 83
+#define B1010100 84
+#define B01010100 84
+#define B1010101 85
+#define B01010101 85
+#define B1010110 86
+#define B01010110 86
+#define B1010111 87
+#define B01010111 87
+#define B1011000 88
+#define B01011000 88
+#define B1011001 89
+#define B01011001 89
+#define B1011010 90
+#define B01011010 90
+#define B1011011 91
+#define B01011011 91
+#define B1011100 92
+#define B01011100 92
+#define B1011101 93
+#define B01011101 93
+#define B1011110 94
+#define B01011110 94
+#define B1011111 95
+#define B01011111 95
+#define B1100000 96
+#define B01100000 96
+#define B1100001 97
+#define B01100001 97
+#define B1100010 98
+#define B01100010 98
+#define B1100011 99
+#define B01100011 99
+#define B1100100 100
+#define B01100100 100
+#define B1100101 101
+#define B01100101 101
+#define B1100110 102
+#define B01100110 102
+#define B1100111 103
+#define B01100111 103
+#define B1101000 104
+#define B01101000 104
+#define B1101001 105
+#define B01101001 105
+#define B1101010 106
+#define B01101010 106
+#define B1101011 107
+#define B01101011 107
+#define B1101100 108
+#define B01101100 108
+#define B1101101 109
+#define B01101101 109
+#define B1101110 110
+#define B01101110 110
+#define B1101111 111
+#define B01101111 111
+#define B1110000 112
+#define B01110000 112
+#define B1110001 113
+#define B01110001 113
+#define B1110010 114
+#define B01110010 114
+#define B1110011 115
+#define B01110011 115
+#define B1110100 116
+#define B01110100 116
+#define B1110101 117
+#define B01110101 117
+#define B1110110 118
+#define B01110110 118
+#define B1110111 119
+#define B01110111 119
+#define B1111000 120
+#define B01111000 120
+#define B1111001 121
+#define B01111001 121
+#define B1111010 122
+#define B01111010 122
+#define B1111011 123
+#define B01111011 123
+#define B1111100 124
+#define B01111100 124
+#define B1111101 125
+#define B01111101 125
+#define B1111110 126
+#define B01111110 126
+#define B1111111 127
+#define B01111111 127
+#define B10000000 128
+#define B10000001 129
+#define B10000010 130
+#define B10000011 131
+#define B10000100 132
+#define B10000101 133
+#define B10000110 134
+#define B10000111 135
+#define B10001000 136
+#define B10001001 137
+#define B10001010 138
+#define B10001011 139
+#define B10001100 140
+#define B10001101 141
+#define B10001110 142
+#define B10001111 143
+#define B10010000 144
+#define B10010001 145
+#define B10010010 146
+#define B10010011 147
+#define B10010100 148
+#define B10010101 149
+#define B10010110 150
+#define B10010111 151
+#define B10011000 152
+#define B10011001 153
+#define B10011010 154
+#define B10011011 155
+#define B10011100 156
+#define B10011101 157
+#define B10011110 158
+#define B10011111 159
+#define B10100000 160
+#define B10100001 161
+#define B10100010 162
+#define B10100011 163
+#define B10100100 164
+#define B10100101 165
+#define B10100110 166
+#define B10100111 167
+#define B10101000 168
+#define B10101001 169
+#define B10101010 170
+#define B10101011 171
+#define B10101100 172
+#define B10101101 173
+#define B10101110 174
+#define B10101111 175
+#define B10110000 176
+#define B10110001 177
+#define B10110010 178
+#define B10110011 179
+#define B10110100 180
+#define B10110101 181
+#define B10110110 182
+#define B10110111 183
+#define B10111000 184
+#define B10111001 185
+#define B10111010 186
+#define B10111011 187
+#define B10111100 188
+#define B10111101 189
+#define B10111110 190
+#define B10111111 191
+#define B11000000 192
+#define B11000001 193
+#define B11000010 194
+#define B11000011 195
+#define B11000100 196
+#define B11000101 197
+#define B11000110 198
+#define B11000111 199
+#define B11001000 200
+#define B11001001 201
+#define B11001010 202
+#define B11001011 203
+#define B11001100 204
+#define B11001101 205
+#define B11001110 206
+#define B11001111 207
+#define B11010000 208
+#define B11010001 209
+#define B11010010 210
+#define B11010011 211
+#define B11010100 212
+#define B11010101 213
+#define B11010110 214
+#define B11010111 215
+#define B11011000 216
+#define B11011001 217
+#define B11011010 218
+#define B11011011 219
+#define B11011100 220
+#define B11011101 221
+#define B11011110 222
+#define B11011111 223
+#define B11100000 224
+#define B11100001 225
+#define B11100010 226
+#define B11100011 227
+#define B11100100 228
+#define B11100101 229
+#define B11100110 230
+#define B11100111 231
+#define B11101000 232
+#define B11101001 233
+#define B11101010 234
+#define B11101011 235
+#define B11101100 236
+#define B11101101 237
+#define B11101110 238
+#define B11101111 239
+#define B11110000 240
+#define B11110001 241
+#define B11110010 242
+#define B11110011 243
+#define B11110100 244
+#define B11110101 245
+#define B11110110 246
+#define B11110111 247
+#define B11111000 248
+#define B11111001 249
+#define B11111010 250
+#define B11111011 251
+#define B11111100 252
+#define B11111101 253
+#define B11111110 254
+#define B11111111 255
+
+#endif
diff --git a/src/wiring/bits.h b/src/wiring/bits.h
new file mode 100644
index 0000000..e614094
--- /dev/null
+++ b/src/wiring/bits.h
@@ -0,0 +1,35 @@
+// BIT DEFINITION

+

+#define   BIT0        0x00000001

+#define   BIT1        0x00000002

+#define   BIT2        0x00000004

+#define   BIT3        0x00000008

+#define   BIT4        0x00000010

+#define   BIT5        0x00000020

+#define   BIT6        0x00000040

+#define   BIT7        0x00000080

+#define   BIT8        0x00000100

+#define   BIT9        0x00000200

+#define   BIT10       0x00000400

+#define   BIT11       0x00000800

+#define   BIT12       0x00001000

+#define   BIT13       0x00002000

+#define   BIT14       0x00004000

+#define   BIT15       0x00008000

+#define   BIT16       0x00010000

+#define   BIT17       0x00020000

+#define   BIT18       0x00040000

+#define   BIT19       0x00080000

+#define   BIT20       0x00100000

+#define   BIT21       0x00200000

+#define   BIT22       0x00400000

+#define   BIT23       0x00800000

+#define   BIT24       0x01000000

+#define   BIT25       0x02000000

+#define   BIT26       0x04000000

+#define   BIT27       0x08000000

+#define   BIT28       0x10000000

+#define   BIT29       0x20000000

+#define   BIT30       0x40000000

+#define   BIT31       0x80000000

+

diff --git a/src/wiring/comm/Serial.cpp b/src/wiring/comm/Serial.cpp
new file mode 100644
index 0000000..3c43436
--- /dev/null
+++ b/src/wiring/comm/Serial.cpp
@@ -0,0 +1,67 @@
+//#include "stm32f10x_usart.h"
+#include "stm32f10x_gpio.h"
+#include "stm32f10x_rcc.h"
+#include "gpio.h"
+#include "Serial.h"
+#include "wiring.h"
+
+int SendChar (int ch)  {
+    /* Write character to Serial Port     */
+//    USART_SendData(USART2, (unsigned char) ch);
+//    while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET)
+//        ;
+//
+//    //    while (!(USART2->SR & USART_FLAG_TXE));
+//    return (ch);
+}
+
+void uart_send(const char* str) {
+    while (*str != '\0') {
+        SendChar(*str);
+        str++;
+    }
+}
+
+
+Serial::Serial() {
+}
+
+void Serial::write(uint8_t c) {
+    SendChar(c);
+}
+
+void Serial::begin(uint32_t baud) {
+ //   USART_InitTypeDef USART_InitStructure;
+
+    /* Turn on the clock  */
+    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
+
+#if 0
+    /* Configure USART2 Tx as alternate function push-pull */
+    GPIO_InitTypeDef GPIO_InitStructure;
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+    /* Configure USART2 Rx as input floating */
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+#endif
+
+    pinMode(1, GPIO_MODE_AF_OUTPUT_PP);
+    pinMode(0, GPIO_MODE_INPUT_FLOATING);
+
+    /* Enable USART2  */
+//    USART_InitStructure.USART_BaudRate = baud;
+//    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
+//    USART_InitStructure.USART_StopBits = USART_StopBits_1;
+//    USART_InitStructure.USART_Parity = USART_Parity_No ;
+//    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+//    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
+//    USART_Init(USART2, &USART_InitStructure);
+//    USART_Cmd(USART2, ENABLE);
+}
+
+Serial Serial1;
diff --git a/src/wiring/comm/Serial.h b/src/wiring/comm/Serial.h
new file mode 100644
index 0000000..0e7a126
--- /dev/null
+++ b/src/wiring/comm/Serial.h
@@ -0,0 +1,20 @@
+#ifndef _SERIAL_H_
+#define _SERIAL_H_
+
+#include <inttypes.h>
+#include <Print.h>
+
+class Serial : public Print {
+    public:
+        Serial();
+        void begin(uint32_t);
+        uint8_t available(void);
+        int read(void);
+        void flush(void);
+        virtual void write(uint8_t);
+        using Print::write;
+};
+
+extern Serial Serial1;
+#endif
+
diff --git a/src/wiring/ext_interrupts.c b/src/wiring/ext_interrupts.c
new file mode 100644
index 0000000..0a35472
--- /dev/null
+++ b/src/wiring/ext_interrupts.c
@@ -0,0 +1,65 @@
+#include "wiring.h"
+#include "exti.h"
+#include "ext_interrupts.h"
+
+typedef struct ExtiInfo {
+    uint8_t channel;
+    uint8_t port;
+} ExtiInfo;
+
+static ExtiInfo PIN_TO_EXTI_CHANNEL[NR_MAPLE_PINS] = {
+    {EXTI3,  EXTI_CONFIG_PORTA},      // D0/PA3
+    {EXTI2,  EXTI_CONFIG_PORTA},      // D1/PA2
+    {EXTI0,  EXTI_CONFIG_PORTA},      // D2/PA0
+    {EXTI1,  EXTI_CONFIG_PORTA},      // D3/PA1
+    {EXTI5,  EXTI_CONFIG_PORTB},      // D4/PB5
+    {EXTI6,  EXTI_CONFIG_PORTB},      // D5/PB6
+    {EXTI8,  EXTI_CONFIG_PORTA},      // D6/PA8
+    {EXTI9,  EXTI_CONFIG_PORTA},      // D7/PA9
+    {EXTI10, EXTI_CONFIG_PORTA},      // D8/PA10
+    {EXTI7,  EXTI_CONFIG_PORTB},      // D9/PB7
+    {EXTI4,  EXTI_CONFIG_PORTA},      // D10/PA4
+    {EXTI7,  EXTI_CONFIG_PORTA},      // D11/PA7
+    {EXTI6,  EXTI_CONFIG_PORTA},      // D12/PA6
+    {EXTI5,  EXTI_CONFIG_PORTA},      // D13/PA5
+};
+
+
+
+/**
+ *  @brief Attach an interrupt handler to be triggered on a given
+ *  transition on the pin. Runs in interrupt context
+ *
+ *  @param[in] pin Maple pin number
+ *  @param[in] handler Function to run upon external interrupt trigger.
+ *  @param[in] mode Type of transition to trigger on, eg falling, rising, etc.
+ *
+ *  @sideeffect Registers a handler
+ */
+int attachInterrupt(uint8_t pin, void (*handler)(void), uint8_t mode) {
+    /* Parameter checking  */
+    if (pin >= NR_MAPLE_PINS) {
+        return EXT_INTERRUPT_INVALID_PIN;
+    }
+
+    if (!handler) {
+        return EXT_INTERRUPT_INVALID_FUNCTION;
+    }
+
+    if (!(mode < NR_EXTI_MODES)) {
+        return EXT_INTERRUPT_INVALID_MODE;
+    }
+
+    exti_attach_interrupt(PIN_TO_EXTI_CHANNEL[pin].channel, 
+                          PIN_TO_EXTI_CHANNEL[pin].port,
+                          handler, mode);
+}
+
+int detachInterrupt(uint8_t pin) {
+    if (!(pin < NR_MAPLE_PINS)) {
+        return EXT_INTERRUPT_INVALID_PIN;
+    }
+
+    exti_detach_interrupt(PIN_TO_EXTI_CHANNEL[pin].channel);
+}
+
diff --git a/src/wiring/ext_interrupts.h b/src/wiring/ext_interrupts.h
new file mode 100644
index 0000000..d6fb23f
--- /dev/null
+++ b/src/wiring/ext_interrupts.h
@@ -0,0 +1,31 @@
+#ifndef _EXT_INTERRUPTS_H_
+#define _EXT_INTERRUPTS_H_
+
+#include "exti.h"
+
+#define RISING  EXTI_RISING
+#define FALLING EXTI_FALLING
+#define CHANGE  EXTI_RISING_FALLING
+
+
+enum ExtInterruptError {
+    EXT_INTERRUPT_INVALID_PIN =      (-1),
+    EXT_INTERRUPT_INVALID_FUNCTION = (-2),
+    EXT_INTERRUPT_INVALID_MODE =     (-3),
+
+};
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+int attachInterrupt(uint8_t, void ((*)(void)), uint8_t);
+int detachInterrupt(uint8_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
+
diff --git a/src/wiring/io.h b/src/wiring/io.h
new file mode 100644
index 0000000..387326a
--- /dev/null
+++ b/src/wiring/io.h
@@ -0,0 +1,110 @@
+#ifndef _IO_H
+#define _IO_H
+
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+/* stash these here for now  */
+#define D0    0
+#define D1    1
+#define D2    2
+#define D3    3
+#define D4    4
+#define D5    5
+#define D6    6
+#define D7    7
+#define D8    8
+#define D9    9
+#define D10  10
+#define D11  11
+#define D12  12
+#define D13  13
+#define D14  14
+#define D15  15
+#define D16  16
+#define D16  16
+#define D17  17
+#define D18  18
+#define D19  19
+#define D20  20
+#define D21  21
+#define D22  22
+#define D23  23
+#define D24  24
+#define D25  25
+#define D26  26
+#define D27  27
+#define D28  28
+#define D29  29
+#define D30  30
+#define D31  31
+#define D32  32
+#define D33  33
+#define D34  34
+#define D35  35
+#define D36  36
+#define D37  37
+#define D38  38
+#define D39  39
+
+#define A0   D14
+#define A1   D15
+#define A2   D16
+#define A3   D17
+#define A4   D18
+#define A5   D19
+#define A6   D0
+#define A7   D1
+#define A8   D2
+#define A9   D3
+#define A10  D10
+#define A11  D11
+#define A12  D12
+#define A13  D13
+#define A14  D26
+#define A15  D11
+
+/* Set pin to mode
+ * pinMode(pin, mode):
+ *     pin -> {0-38, D0-D39, A0-16}
+ *     mode -> {
+ *         INPUT/INPUT_DIGITAL
+ *         INPUT_PULLUP
+ *         INPUT_PULLDOWN
+ *         INPUT_ANALOG
+ *         OUTPUT/OUTPUT_PP
+ *         OUTPUT_OPEN_DRAIN
+ *     }
+ */
+void pinMode(uint8_t, uint8_t);
+
+/* 
+ * Writes VALUE to digital pin[0-38]
+ * digitalWrite(pin, value):
+ *     pin -> {0-38, D0-D39, A0-16}
+ *     value -> LOW, HIGH;
+*/
+void digitalWrite(uint8_t, uint8_t);
+
+/* Read a digital value from pin, the pin mode must be set to
+ * {INPUT, INPUT_PULLUP, INPUT_PULLDOWN}
+ * digitalRead(pin)        
+ *     pin -> {0-38, D0-D39, A0-16}
+ */
+uint32_t digitalRead(uint8_t);
+
+/* Read an analog value from pin, the pin mode must be set
+ * to INPUT_ANALOG 
+ * analogRead(pin)
+ *     pin -> {A0-A16}
+ *     */
+uint32_t analogRead(uint8_t);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+#endif
+
diff --git a/src/wiring/math.cpp b/src/wiring/math.cpp
new file mode 100644
index 0000000..9be7dc3
--- /dev/null
+++ b/src/wiring/math.cpp
@@ -0,0 +1,38 @@
+#include <stdlib.h>
+#include "math.h"
+
+/* from newlib:
+ *
+ * rand returns the next pseudo-random integer in sequence; it is a number 
+ *      between 0 and RAND_MAX (inclusive).
+ *
+ * srand does not return a result. */
+
+
+/* The rest copied from WMath.cpp  */
+void randomSeed(unsigned int seed) {
+  if (seed != 0) {
+    srand(seed);
+  }
+}
+
+long random(long howbig) {
+  if (howbig == 0) {
+    return 0;
+  }
+  return rand() % howbig;
+}
+
+long random(long howsmall, long howbig) {
+  if (howsmall >= howbig) {
+    return howsmall;
+  }
+  long diff = howbig - howsmall;
+  return random(diff) + howsmall;
+}
+
+long map(long x, long in_min, long in_max, long out_min, long out_max) {
+  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
+
diff --git a/src/wiring/math.h b/src/wiring/math.h
new file mode 100644
index 0000000..ee269e9
--- /dev/null
+++ b/src/wiring/math.h
@@ -0,0 +1,30 @@
+#ifndef _MAPLE_MATH_H_
+#define _MAPLE_MATH_H_
+
+void randomSeed(unsigned int);
+long random(long);
+long random(long, long);
+long map(long, long, long, long, long);
+
+#define PI 3.1415926535897932384626433832795
+#define HALF_PI 1.5707963267948966192313216916398
+#define TWO_PI 6.283185307179586476925286766559
+#define DEG_TO_RAD 0.017453292519943295769236907684886
+#define RAD_TO_DEG 57.295779513082320876798154814105
+
+#define min(a,b) ((a)<(b)?(a):(b))
+#define max(a,b) ((a)>(b)?(a):(b))
+#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
+#define round(x)     ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#define radians(deg) ((deg)*DEG_TO_RAD)
+#define degrees(rad) ((rad)*RAD_TO_DEG)
+#define sq(x) ((x)*(x))
+
+/* undefine stdlib's abs if encountered */
+#ifdef abs
+#undef abs
+#endif
+#define abs(x) (((x) > 0)  ?  (x) : -(unsigned)(x))
+
+#endif
+
diff --git a/src/wiring/pwm.c b/src/wiring/pwm.c
new file mode 100644
index 0000000..0c33c3a
--- /dev/null
+++ b/src/wiring/pwm.c
@@ -0,0 +1,40 @@
+#include "wiring.h"
+#include "timers.h"
+#include "gpio.h"
+#include "pwm.h"
+
+#define NOT_A_TIMER 0
+
+static const TimerCCR PIN_TO_TIMER[NR_MAPLE_PINS] = {
+    TIMER2_CH4_CCR,                     // D0/A6
+    TIMER2_CH3_CCR,                     // D1/A7
+    TIMER2_CH1_CCR,                     // D2/A8
+    TIMER2_CH2_CCR,                     // D3/A9
+    NOT_A_TIMER,                        // D4
+    TIMER4_CH1_CCR,                     // D5
+    TIMER1_CH1_CCR,                     // D6
+    TIMER1_CH2_CCR,                     // D7
+    TIMER1_CH3_CCR,                     // D8
+    TIMER4_CH2_CCR,                     // D9
+    NOT_A_TIMER,                        // D10/A10
+    TIMER3_CH2_CCR,                     // D11/A11
+    TIMER3_CH1_CCR,                     // D12/A12
+    NOT_A_TIMER,                        // D13/A13
+};
+
+void pwmWrite(uint8_t pin, uint16_t duty_cycle) {
+    TimerCCR ccr;
+
+    if (pin >= NR_MAPLE_PINS) {
+        return;
+    }
+
+    ccr = PIN_TO_TIMER[pin];
+
+    if (ccr == NOT_A_TIMER)
+        return;
+
+    timer_pwm_write_ccr(ccr, duty_cycle);
+}
+
+
diff --git a/src/wiring/pwm.h b/src/wiring/pwm.h
new file mode 100644
index 0000000..3ff440b
--- /dev/null
+++ b/src/wiring/pwm.h
@@ -0,0 +1,18 @@
+#ifndef _PWM_H
+#define _PWM_H
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+#define PWM           GPIO_MODE_AF_OUTPUT_PP
+
+void pwmWrite(uint8_t, uint16_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
+
diff --git a/src/wiring/time.c b/src/wiring/time.c
new file mode 100644
index 0000000..bf6a28b
--- /dev/null
+++ b/src/wiring/time.c
@@ -0,0 +1,59 @@
+#include "systick.h"
+#include "time.h"
+
+#define CYCLES_PER_MICROSECOND  72
+#define THE_SECRET_TO_LIFE_THE_UNIVERSE_AND_EVERYTHING    42
+
+extern volatile uint32_t systick_timer_millis;
+
+unsigned long millis() {
+   unsigned long m;
+   m = systick_timer_millis;
+   return m;
+}
+
+void delay(unsigned long ms)
+{
+   unsigned long start = millis();
+
+   while (millis() - start <= ms)
+      ;
+}
+
+
+#define MAGIC 4096
+/* HZ = 1000
+ * n HZ*/
+void delayMicroseconds(uint32_t us) {
+    uint32_t target;
+    uint32_t last, cur, count;
+
+#if 0
+    asm volatile("mov r0, %[count]     \n\t"
+"1:                                    \n\t"
+            "subs r0, r0, #1           \n\t"
+            "bne 1b"
+                 :
+                 : [count] "r" (count)
+                 : "r0", "cc");
+#endif
+
+#if 1
+    /* fudge factor hacky hack hack for function overhead  */
+    target = us * CYCLES_PER_MICROSECOND - THE_SECRET_TO_LIFE_THE_UNIVERSE_AND_EVERYTHING;
+
+    /* Get current count */
+    last = systick_get_count();
+    cur = systick_get_count();
+    count = last;
+    while ((count-cur) <= target) {
+        cur = systick_get_count();
+
+        /* check for overflow  */
+        if (cur > last) {
+            count += MAPLE_RELOAD_VAL;
+        }
+        last = cur;
+    }
+#endif
+}
diff --git a/src/wiring/time.h b/src/wiring/time.h
new file mode 100644
index 0000000..694545b
--- /dev/null
+++ b/src/wiring/time.h
@@ -0,0 +1,27 @@
+#ifndef _TIME_H
+#define _TIME_H
+
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+/* Returns time since boot in milliseconds  */
+uint32_t millis(void);
+
+/* Time in microseconds since boot  */
+uint32_t micros(void);
+
+/* Delay for ms milliseconds  */
+void delay(unsigned long ms);
+
+/* Delay for us microseconds  */
+void delayMicroseconds(uint32_t us);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+
+#endif
+
diff --git a/src/wiring/wiring.c b/src/wiring/wiring.c
new file mode 100644
index 0000000..83679c7
--- /dev/null
+++ b/src/wiring/wiring.c
@@ -0,0 +1,85 @@
+#include <inttypes.h>
+#include "stm32f10x_flash.h"
+#include "stm32f10x_rcc.h"
+#include "stm32f10x_map.h"
+#include "stm32f10x_nvic.h"
+#include "wiring.h"
+#include "systick.h"
+#include "gpio.h"
+
+void RCC_Configuration(void);
+void NVIC_Configuration(void);
+
+void init(void) {
+   RCC_Configuration();
+   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |
+                          RCC_APB2Periph_GPIOB |
+                          RCC_APB2Periph_GPIOC |
+                          RCC_APB2Periph_AFIO
+                        , ENABLE);
+   NVIC_Configuration();
+
+   systick_init();
+
+   gpio_init();
+
+   /* off for debug  */
+//   adc_init();
+
+//   timer_init(1, 1);
+//   timer_init(2, 1);
+//   timer_init(3, 1);
+//   timer_init(4, 1);
+}
+
+void NVIC_Configuration(void) {
+   /* Set the Vector Table base location at 0x08000000 */
+   NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
+}
+
+
+void RCC_Configuration(void) {
+   ErrorStatus HSEStartUpStatus;
+   /* RCC system reset(for debug purpose) */
+   RCC_DeInit();
+
+   /* Enable HSE */
+   RCC_HSEConfig(RCC_HSE_ON);
+
+   /* Wait till HSE is ready */
+   HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+   if(HSEStartUpStatus == SUCCESS) {
+      /* Enable Prefetch Buffer */
+      FLASH_PrefetchBufferCmd( (u32)FLASH_PrefetchBuffer_Enable);
+
+      /* Flash 2 wait state */
+      FLASH_SetLatency(FLASH_Latency_2);
+
+      /* HCLK = SYSCLK */
+      RCC_HCLKConfig(RCC_SYSCLK_Div1);
+
+      /* PCLK2 = HCLK APB2 Periphs, no prescaler 72MHz */
+      RCC_PCLK2Config(RCC_HCLK_Div1);
+
+      /* PCLK1 = HCLK/2 APB1 periphs = 36MHZ*/
+      RCC_PCLK1Config(RCC_HCLK_Div2);
+
+      /* PLLCLK = 8MHz * 9 = 72 MHz */
+      RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+      /* Enable PLL */
+      RCC_PLLCmd(ENABLE);
+
+      /* Wait till PLL is ready */
+      while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+          ;
+
+      /* Select PLL as system clock source */
+      RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+      /* Wait till PLL is used as system clock source */
+      while(RCC_GetSYSCLKSource() != 0x08)
+          ;
+   }
+}
diff --git a/src/wiring/wiring.h b/src/wiring/wiring.h
new file mode 100644
index 0000000..789e697
--- /dev/null
+++ b/src/wiring/wiring.h
@@ -0,0 +1,56 @@
+#ifndef _WIRING_H_
+#define _WIRING_H_
+
+#include <inttypes.h>
+#include "timers.h"
+#include "io.h"
+#include "binary.h"
+#include "time.h"
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+#define MAPLE 1
+#define NR_MAPLE_PINS   14 // temporary
+
+#define HIGH 0x1
+#define LOW  0x0
+
+#define true 0x1
+#define false 0x0
+
+#define SERIAL  0x0
+#define DISPLAY 0x1
+
+#define LSBFIRST 0
+#define MSBFIRST 1
+
+#define lowByte(w) ((w) & 0xff)
+#define highByte(w) ((w) >> 8)
+#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
+#define bitSet(value, bit) ((value) |= (1UL << (bit)))
+#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
+#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit))
+#define bit(b) (1UL << (b))
+
+
+typedef uint8_t boolean;
+typedef uint8_t byte;
+
+void init(void);
+
+
+unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout);
+void shiftOut(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, byte val);
+
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+
+
+
+#endif
+
diff --git a/src/wiring/wiring_analog.c b/src/wiring/wiring_analog.c
new file mode 100644
index 0000000..abcf7c6
--- /dev/null
+++ b/src/wiring/wiring_analog.c
@@ -0,0 +1,33 @@
+#include "adc.h"
+#include "gpio.h"
+#include "wiring.h"
+#include <stdio.h>
+
+/* Indexed by pins A[0-15]  */
+uint32_t PIN_TO_ADC[NR_ANALOG_PINS] = {
+    10,                     // A0/D14    ADC10
+    11,                     // A1/D15    ADC11
+    12,                     // A2/D16    ADC12
+    13,                     // A3/D17    ADC13
+    14,                     // A4/D18    ADC14
+    15,                     // A5/D19    ADC15
+     3,                     // A6/D0     ADC3
+     2,                     // A7/D1     ADC2
+     0,                     // A8/D2     ADC0
+     1,                     // A9/D3     ADC1
+     4,                     // A10/D10   ADC4
+     7,                     // A11/D11   ADC7
+     6,                     // A12/D12   ADC6
+     5,                     // A13/D13   ADC5
+     8,                     // A14/D26   ADC8
+     9,                     // A15/D11   ADC9
+};
+
+/* Assumes that the ADC has been initialized and
+ * that the pin is set to ANALOG_INPUT */
+uint32_t analogRead(uint8_t pin) {
+    if (pin >= NR_ANALOG_PINS)
+        return 0;
+
+    return adc_read(PIN_TO_ADC[pin]);
+}
diff --git a/src/wiring/wiring_digital.c b/src/wiring/wiring_digital.c
new file mode 100644
index 0000000..1ece41a
--- /dev/null
+++ b/src/wiring/wiring_digital.c
@@ -0,0 +1,55 @@
+#include "gpio.h"
+#include "wiring.h"
+#include "util.h"
+
+typedef struct PinGPIOMapping {
+    GPIO_Port *port;
+    uint32_t pin;
+} PinGPIOMapping;
+
+static const PinGPIOMapping PIN_TO_GPIO[NR_MAPLE_PINS] = {
+    {_GPIOA_BASE,  3},                          // D0/PA3
+    {_GPIOA_BASE,  2},                          // D1/PA2
+    {_GPIOA_BASE,  0},                          // D2/PA0
+    {_GPIOA_BASE,  1},                          // D3/PA1
+    {_GPIOB_BASE,  5},                          // D4/PB5
+    {_GPIOB_BASE,  6},                          // D5/PB6
+    {_GPIOA_BASE,  8},                          // D6/PA8
+    {_GPIOA_BASE,  9},                          // D7/PA9
+    {_GPIOA_BASE, 10},                          // D8/PA10
+    {_GPIOB_BASE,  7},                          // D9/PB7
+    {_GPIOA_BASE,  4},                          // D10/PA4
+    {_GPIOA_BASE,  7},                          // D11/PA7
+    {_GPIOA_BASE,  6},                          // D12/PA6
+    {_GPIOA_BASE,  5},                          // D13/PA5
+#if 0
+    {_GPIOC_BASE,  0},                          // D14/A0/PC0
+    {_GPIOC_BASE,  1},                          // D15/A1/PC1
+    {_GPIOC_BASE,  2},                          // D16/A2/PC2
+    {_GPIOC_BASE,  3},                          // D17/A3/PC3
+    {_GPIOC_BASE,  4},                          // D18/A4/PC4
+    {_GPIOC_BASE,  5},                          // D19/A5/PC5
+#endif
+};
+
+void pinMode(uint8_t pin, uint8_t mode) {
+    if (pin >= NR_MAPLE_PINS)
+        return;
+
+    gpio_set_mode(PIN_TO_GPIO[pin].port, PIN_TO_GPIO[pin].pin, mode);
+}
+
+
+uint32_t digitalRead(uint8_t pin) {
+    if (pin >= NR_MAPLE_PINS)
+        return 0;
+
+    return (PIN_TO_GPIO[pin].port->IDR & BIT(PIN_TO_GPIO[pin].pin)) ? 1 : 0;
+}
+
+void digitalWrite(uint8_t pin, uint8_t val) {
+    if (pin >= NR_MAPLE_PINS)
+        return;
+
+    gpio_write_bit(PIN_TO_GPIO[pin].port, PIN_TO_GPIO[pin].pin, val);
+}
diff --git a/src/wiring/wiring_shift.c b/src/wiring/wiring_shift.c
new file mode 100644
index 0000000..c138b56
--- /dev/null
+++ b/src/wiring/wiring_shift.c
@@ -0,0 +1,42 @@
+/* copied straight from arduino/wiring_shift.c  */
+
+/*
+  wiring_shift.c - shiftOut() function
+  Part of Arduino - http://www.arduino.cc/
+
+  Copyright (c) 2005-2006 David A. Mellis
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General
+  Public License along with this library; if not, write to the
+  Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+  Boston, MA  02111-1307  USA
+
+  $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $
+*/
+
+#include "wiring.h"
+
+void shiftOut(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, byte val)
+{
+    int i;
+
+    for (i = 0; i < 8; i++)  {
+        if (bitOrder == LSBFIRST)
+            digitalWrite(dataPin, !!(val & (1 << i)));
+        else
+            digitalWrite(dataPin, !!(val & (1 << (7 - i))));
+
+        digitalWrite(clockPin, HIGH);
+        digitalWrite(clockPin, LOW);
+    }
+}