SSD1306 OLED display driver  1.5.6
This library is developed to control SSD1306/SSD1331/SSD1351/IL9163/PCD8554 RGB i2c/spi LED displays
io.h
1 /*
2  MIT License
3 
4  Copyright (c) 2018, Alexey Dynda
5 
6  Permission is hereby granted, free of charge, to any person obtaining a copy
7  of this software and associated documentation files (the "Software"), to deal
8  in the Software without restriction, including without limitation the rights
9  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  copies of the Software, and to permit persons to whom the Software is
11  furnished to do so, subject to the following conditions:
12 
13  The above copyright notice and this permission notice shall be included in all
14  copies or substantial portions of the Software.
15 
16  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  SOFTWARE.
23 */
24 
29 #ifndef _SSD1306_LINUX_IO_H_
30 #define _SSD1306_LINUX_IO_H_
31 
32 #if (defined(__linux__) || defined(__MINGW32__)) && !defined(ARDUINO)
33 
34 #define SSD1306_LINUX_SUPPORTED
35 
36 #if defined(SDL_EMULATION) // SDL Emulation mode includes
37 #include "sdl_core.h"
38 #endif
39 
40 #if defined(__KERNEL__) // KERNEL includes
41 #include <linux/types.h>
42 
43 #elif defined(__MINGW32__) // MINGW32 includes
44 #include <windows.h>
45 #include <stdint.h>
46 #include <unistd.h>
47 #include "sdl_core.h"
48 #include <time.h>
49 #include <string.h>
50 
51 #else // LINUX includes
52 #include <stdint.h>
53 #include <unistd.h>
54 #include <time.h>
55 #include <string.h>
56 #endif
57 
59 #define LOW 0
60 #define HIGH 1
61 #define INPUT 1
62 #define OUTPUT 0
63 
64 #define PROGMEM
65 
66 #ifdef __cplusplus
67 extern "C" {
68 #endif
69 
70 static inline int digitalRead(int pin) { return LOW; };
71 #if defined(__KERNEL__) // ============== KERNEL
72 static inline void delay(unsigned long ms) { };
73 static inline void delayMicroseconds(unsigned long us) { };
74 static inline int analogRead(int pin) { return 0; };
75 static inline void digitalWrite(int pin, int level) { };
76 static inline uint32_t millis(void) { return 0; };
77 static inline uint32_t micros(void) { return 0; };
78 static inline void pinMode(int pin, int mode) {};
79 
80 #elif defined(__MINGW32__) // ============== MINGW32
81 static inline void delay(unsigned long ms) { Sleep(ms); };
82 static inline void delayMicroseconds(unsigned long us) { Sleep((us+500)/1000); };
83 static inline uint32_t millis(void)
84 {
85  return GetTickCount();
86 };
87 
88 static inline uint32_t micros(void)
89 {
90  return GetTickCount()*1000;
91 };
92 
93 #else // ============== LINUX
94 static inline void delay(unsigned long ms) { usleep(ms*1000); };
95 static inline void delayMicroseconds(unsigned long us) { usleep(us); };
96 static inline uint32_t millis(void)
97 {
98  struct timespec ts;
99  clock_gettime(CLOCK_MONOTONIC, &ts);
100  return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
101 };
102 
103 static inline uint32_t micros(void)
104 {
105  struct timespec ts;
106  clock_gettime(CLOCK_MONOTONIC, &ts);
107  return ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
108 };
109 
110 /* For some reason defines do not work accross the libraries *
111  * Didn't yet figure out, what is the reason fo this issue */
112 //define min(a,b) (((a)<(b))?(a):(b))
113 //define max(a,b) (((a)>(b))?(a):(b))
114 static inline int min(int a, int b) { return a<b?a:b; };
115 static inline int max(int a, int b) { return a>b?a:b; };
116 #if !defined(SDL_EMULATION)
117 void pinMode(int pin, int mode);
118 #endif
119 
120 #endif
121 
122 #if defined(__MINGW32__) || defined(SDL_EMULATION)
123 static inline int analogRead(int pin) { return sdl_read_analog(pin); };
124 static inline void digitalWrite(int pin, int level) { sdl_write_digital(pin, level); };
125 static inline void pinMode(int pin, int mode) { };
126 #elif !defined(__KERNEL__)
127 static inline int analogRead(int pin) { return 0; };
128 void digitalWrite(int pin, int level);
129 #endif
130 
131 static inline void randomSeed(int seed) { };
132 static inline void attachInterrupt(int pin, void (*interrupt)(void), int level) { };
133 static inline uint8_t pgm_read_byte(const void *ptr) { return *((const uint8_t *)ptr); };
134 static inline uint16_t eeprom_read_word(const void *ptr) { return 0; };
135 static inline void eeprom_write_word(const void *ptr, uint16_t val) { };
136 
137 static inline char *utoa(unsigned int num, char *str, int radix)
138 {
139  char temp[17]; //an int can only be 16 bits long
140  //at radix 2 (binary) the string
141  //is at most 16 + 1 null long.
142  int temp_loc = 0;
143  int digit;
144  int str_loc = 0;
145 
146  //construct a backward string of the number.
147  do {
148  digit = (unsigned int)num % radix;
149  if (digit < 10)
150  temp[temp_loc++] = digit + '0';
151  else
152  temp[temp_loc++] = digit - 10 + 'A';
153  num = ((unsigned int)num) / radix;
154  } while ((unsigned int)num > 0);
155 
156  temp_loc--;
157 
158 
159  //now reverse the string.
160  while ( temp_loc >=0 ) {// while there are still chars
161  str[str_loc++] = temp[temp_loc--];
162  }
163  str[str_loc] = 0; // add null termination.
164 
165  return str;
166 }
167 
168 #ifdef __cplusplus
169 }
170 #endif
171 
172 #ifdef __cplusplus
173 #include <cstdlib>
174 static inline long random(long v)
175 {
176  return rand() % v;
177 }
178 
179 static inline long random(long min, long max)
180 {
181  return rand() % (max - min + 1) + min;
182 }
183 #endif
184 
185 #endif
186 
187 #endif
188 
#define max(a, b)
#define min(a, b)