SSD1306 OLED display driver  1.5.0
This library is developed to control SSD1306/SSD1331 RGB i2c/spi OLED displays and spi PCD8544 LED display
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 static inline void pinMode(int pin, int mode) {};
72 #if defined(__KERNEL__) // ============== KERNEL
73 static inline void delay(unsigned long ms) { };
74 static inline void delayMicroseconds(unsigned long us) { };
75 static inline int analogRead(int pin) { return 0; };
76 static inline void digitalWrite(int pin, int level) { };
77 static inline uint32_t millis(void) { return 0; };
78 static inline uint32_t micros(void) { return 0; };
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 #endif
117 
118 #if defined(__MINGW32__) || defined(SDL_EMULATION)
119 static inline int analogRead(int pin) { return sdl_read_analog(pin); };
120 static inline void digitalWrite(int pin, int level) { sdl_write_digital(pin, level); };
121 #elif !defined(__KERNEL__)
122 static inline int analogRead(int pin) { return 0; };
123 static inline void digitalWrite(int pin, int level) {};
124 #endif
125 
126 static inline void randomSeed(int seed) { };
127 static inline void attachInterrupt(int pin, void (*interrupt)(void), int level) { };
128 static inline uint8_t pgm_read_byte(const void *ptr) { return *((const uint8_t *)ptr); };
129 static inline uint16_t eeprom_read_word(const void *ptr) { return 0; };
130 static inline void eeprom_write_word(const void *ptr, uint16_t val) { };
131 
132 static inline char *utoa(unsigned int num, char *str, int radix) {
133  char temp[17]; //an int can only be 16 bits long
134  //at radix 2 (binary) the string
135  //is at most 16 + 1 null long.
136  int temp_loc = 0;
137  int digit;
138  int str_loc = 0;
139 
140  //construct a backward string of the number.
141  do {
142  digit = (unsigned int)num % radix;
143  if (digit < 10)
144  temp[temp_loc++] = digit + '0';
145  else
146  temp[temp_loc++] = digit - 10 + 'A';
147  num = ((unsigned int)num) / radix;
148  } while ((unsigned int)num > 0);
149 
150  temp_loc--;
151 
152 
153  //now reverse the string.
154  while ( temp_loc >=0 ) {// while there are still chars
155  str[str_loc++] = temp[temp_loc--];
156  }
157  str[str_loc] = 0; // add null termination.
158 
159  return str;
160 }
161 
162 #ifdef __cplusplus
163 }
164 #endif
165 
166 #ifdef __cplusplus
167 #include <cstdlib>
168 static inline long random(long v)
169 {
170  return rand() % v;
171 }
172 
173 static inline long random(long min, long max)
174 {
175  return rand() % (max - min + 1) + min;
176 }
177 #endif
178 
179 #endif
180 
181 #endif
182 
#define max(a, b)
#define min(a, b)