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teensy-cores/teensy3/HardwareSerial.h

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  1. /* Teensyduino Core Library

  2.  * http://www.pjrc.com/teensy/

  3.  * Copyright (c) 2013 PJRC.COM, LLC.

  4.  *

  5.  * Permission is hereby granted, free of charge, to any person obtaining

  6.  * a copy of this software and associated documentation files (the

  7.  * "Software"), to deal in the Software without restriction, including

  8.  * without limitation the rights to use, copy, modify, merge, publish,

  9.  * distribute, sublicense, and/or sell copies of the Software, and to

  10.  * permit persons to whom the Software is furnished to do so, subject to

  11.  * the following conditions:

  12.  *

  13.  * 1. The above copyright notice and this permission notice shall be

  14.  * included in all copies or substantial portions of the Software.

  15.  *

  16.  * 2. If the Software is incorporated into a build system that allows

  17.  * selection among a list of target devices, then similar target

  18.  * devices manufactured by PJRC.COM must be included in the list of

  19.  * target devices and selectable in the same manner.

  20.  *

  21.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

  22.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

  23.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

  24.  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

  25.  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

  26.  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

  27.  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

  28.  * SOFTWARE.

  29.  */

  30. 

  31. #ifndef HardwareSerial_h

  32. #define HardwareSerial_h

  33. 

  34. #include "kinetis.h"

  35. 

  36. // uncomment to enable 9 bit formats

  37. //#define SERIAL_9BIT_SUPPORT

  38. 

  39. 

  40. #define SERIAL_7E1 0x02

  41. #define SERIAL_7O1 0x03

  42. #define SERIAL_8N1 0x00

  43. #define SERIAL_8N2 0x04

  44. #define SERIAL_8E1 0x06

  45. #define SERIAL_8O1 0x07

  46. #define SERIAL_7E1_RXINV 0x12

  47. #define SERIAL_7O1_RXINV 0x13

  48. #define SERIAL_8N1_RXINV 0x10

  49. #define SERIAL_8N2_RXINV 0x14

  50. #define SERIAL_8E1_RXINV 0x16

  51. #define SERIAL_8O1_RXINV 0x17

  52. #define SERIAL_7E1_TXINV 0x22

  53. #define SERIAL_7O1_TXINV 0x23

  54. #define SERIAL_8N1_TXINV 0x20

  55. #define SERIAL_8N2_TXINV 0x24

  56. #define SERIAL_8E1_TXINV 0x26

  57. #define SERIAL_8O1_TXINV 0x27

  58. #define SERIAL_7E1_RXINV_TXINV 0x32

  59. #define SERIAL_7O1_RXINV_TXINV 0x33

  60. #define SERIAL_8N1_RXINV_TXINV 0x30

  61. #define SERIAL_8N2_RXINV_TXINV 0x34

  62. #define SERIAL_8E1_RXINV_TXINV 0x36

  63. #define SERIAL_8O1_RXINV_TXINV 0x37

  64. #ifdef SERIAL_9BIT_SUPPORT

  65. #define SERIAL_9N1 0x84

  66. #define SERIAL_9E1 0x8E

  67. #define SERIAL_9O1 0x8F

  68. #define SERIAL_9N1_RXINV 0x94

  69. #define SERIAL_9E1_RXINV 0x9E

  70. #define SERIAL_9O1_RXINV 0x9F

  71. #define SERIAL_9N1_TXINV 0xA4

  72. #define SERIAL_9E1_TXINV 0xAE

  73. #define SERIAL_9O1_TXINV 0xAF

  74. #define SERIAL_9N1_RXINV_TXINV 0xB4

  75. #define SERIAL_9E1_RXINV_TXINV 0xBE

  76. #define SERIAL_9O1_RXINV_TXINV 0xBF

  77. #endif

  78. // bit0: parity, 0=even, 1=odd

  79. // bit1: parity, 0=disable, 1=enable

  80. // bit2: mode, 1=9bit, 0=8bit

  81. // bit3: mode10: 1=10bit, 0=8bit

  82. // bit4: rxinv, 0=normal, 1=inverted

  83. // bit5: txinv, 0=normal, 1=inverted

  84. // bit6: unused

  85. // bit7: actual data goes into 9th bit

  86. 

  87. 

  88. #if defined(KINETISK)

  89. #define BAUD2DIV(baud)  (((F_CPU * 2) + ((baud) >> 1)) / (baud))

  90. #define BAUD2DIV2(baud) (((F_CPU * 2) + ((baud) >> 1)) / (baud))

  91. #define BAUD2DIV3(baud) (((F_BUS * 2) + ((baud) >> 1)) / (baud))

  92. #elif defined(KINETISL)

  93. 

  94. #if F_CPU <= 2000000

  95. #define BAUD2DIV(baud)  (((F_PLL / 16 ) + ((baud) >> 1)) / (baud))

  96. #elif F_CPU <= 16000000

  97. #define BAUD2DIV(baud)  (((F_PLL / (F_PLL / 1000000)) + ((baud) >> 1)) / (baud))

  98. #else

  99. #define BAUD2DIV(baud)  (((F_PLL / 2 / 16) + ((baud) >> 1)) / (baud))

  100. #endif

  101. 

  102. #define BAUD2DIV2(baud) (((F_BUS / 16) + ((baud) >> 1)) / (baud))

  103. #define BAUD2DIV3(baud) (((F_BUS / 16) + ((baud) >> 1)) / (baud))

  104. #endif

  105. 

  106. 

  107. // C language implementation

  108. //

  109. #ifdef __cplusplus

  110. extern "C" {

  111. #endif

  112. void serial_begin(uint32_t divisor);

  113. void serial_format(uint32_t format);

  114. void serial_end(void);

  115. void serial_set_transmit_pin(uint8_t pin);

  116. void serial_putchar(uint32_t c);

  117. void serial_write(const void *buf, unsigned int count);

  118. void serial_flush(void);

  119. int serial_write_buffer_free(void);

  120. int serial_available(void);

  121. int serial_getchar(void);

  122. int serial_peek(void);

  123. void serial_clear(void);

  124. void serial_print(const char *p);

  125. void serial_phex(uint32_t n);

  126. void serial_phex16(uint32_t n);

  127. void serial_phex32(uint32_t n);

  128. 

  129. void serial2_begin(uint32_t divisor);

  130. void serial2_format(uint32_t format);

  131. void serial2_end(void);

  132. void serial2_set_transmit_pin(uint8_t pin);

  133. void serial2_putchar(uint32_t c);

  134. void serial2_write(const void *buf, unsigned int count);

  135. void serial2_flush(void);

  136. int serial2_write_buffer_free(void);

  137. int serial2_available(void);

  138. int serial2_getchar(void);

  139. int serial2_peek(void);

  140. void serial2_clear(void);

  141. 

  142. void serial3_begin(uint32_t divisor);

  143. void serial3_format(uint32_t format);

  144. void serial3_end(void);

  145. void serial3_set_transmit_pin(uint8_t pin);

  146. void serial3_putchar(uint32_t c);

  147. void serial3_write(const void *buf, unsigned int count);

  148. void serial3_flush(void);

  149. int serial3_write_buffer_free(void);

  150. int serial3_available(void);

  151. int serial3_getchar(void);

  152. int serial3_peek(void);

  153. void serial3_clear(void);

  154. 

  155. #ifdef __cplusplus

  156. }

  157. #endif

  158. 

  159. 

  160. // C++ interface

  161. //

  162. #ifdef __cplusplus

  163. #include "Stream.h"

  164. class HardwareSerial : public Stream

  165. {

  166. public:

  167. 	virtual void begin(uint32_t baud) { serial_begin(BAUD2DIV(baud)); }

  168. 	virtual void begin(uint32_t baud, uint32_t format) {

  169. 					  serial_begin(BAUD2DIV(baud));

  170. 					  serial_format(format); }

  171. 	virtual void end(void)		{ serial_end(); }

  172. 	virtual void transmitterEnable(uint8_t pin) { serial_set_transmit_pin(pin); }

  173. 	virtual int available(void)     { return serial_available(); }

  174. 	virtual int peek(void)          { return serial_peek(); }

  175. 	virtual int read(void)          { return serial_getchar(); }

  176. 	virtual void flush(void)        { serial_flush(); }

  177. 	virtual void clear(void)	{ serial_clear(); }

  178. 	virtual int availableForWrite(void) { return serial_write_buffer_free(); }

  179. 	virtual size_t write(uint8_t c) { serial_putchar(c); return 1; }

  180. 	virtual size_t write(unsigned long n)   { return write((uint8_t)n); }

  181. 	virtual size_t write(long n)            { return write((uint8_t)n); }

  182. 	virtual size_t write(unsigned int n)    { return write((uint8_t)n); }

  183. 	virtual size_t write(int n)             { return write((uint8_t)n); }

  184. 	virtual size_t write(const uint8_t *buffer, size_t size)

  185. 					{ serial_write(buffer, size); return size; }

  186.         virtual size_t write(const char *str)	{ size_t len = strlen(str);

  187. 					  serial_write((const uint8_t *)str, len);

  188. 					  return len; }

  189. 	virtual size_t write9bit(uint32_t c)	{ serial_putchar(c); return 1; }

  190. };

  191. extern HardwareSerial Serial1;

  192. extern void serialEvent1(void);

  193. 

  194. class HardwareSerial2 : public HardwareSerial

  195. {

  196. public:

  197. 	virtual void begin(uint32_t baud) { serial2_begin(BAUD2DIV2(baud)); }

  198. 	virtual void begin(uint32_t baud, uint32_t format) {

  199. 					  serial2_begin(BAUD2DIV(baud));

  200. 					  serial2_format(format); }

  201. 	virtual void end(void)		{ serial2_end(); }

  202. 	virtual void transmitterEnable(uint8_t pin) { serial2_set_transmit_pin(pin); }

  203. 	virtual int available(void)     { return serial2_available(); }

  204. 	virtual int peek(void)          { return serial2_peek(); }

  205. 	virtual int read(void)          { return serial2_getchar(); }

  206. 	virtual void flush(void)        { serial2_flush(); }

  207. 	virtual void clear(void)	{ serial2_clear(); }

  208. 	virtual int availableForWrite(void) { return serial2_write_buffer_free(); }

  209. 	virtual size_t write(uint8_t c) { serial2_putchar(c); return 1; }

  210. 	virtual size_t write(unsigned long n)   { return write((uint8_t)n); }

  211. 	virtual size_t write(long n)            { return write((uint8_t)n); }

  212. 	virtual size_t write(unsigned int n)    { return write((uint8_t)n); }

  213. 	virtual size_t write(int n)             { return write((uint8_t)n); }

  214. 	virtual size_t write(const uint8_t *buffer, size_t size)

  215. 					{ serial2_write(buffer, size); return size; }

  216.         virtual size_t write(const char *str)	{ size_t len = strlen(str);

  217. 					  serial2_write((const uint8_t *)str, len);

  218. 					  return len; }

  219. 	virtual size_t write9bit(uint32_t c)	{ serial2_putchar(c); return 1; }

  220. };

  221. extern HardwareSerial2 Serial2;

  222. extern void serialEvent2(void);

  223. 

  224. class HardwareSerial3 : public HardwareSerial

  225. {

  226. public:

  227. 	virtual void begin(uint32_t baud) { serial3_begin(BAUD2DIV3(baud)); }

  228. 	virtual void begin(uint32_t baud, uint32_t format) {

  229. 					  serial3_begin(BAUD2DIV3(baud));

  230. 					  serial3_format(format); }

  231. 	virtual void end(void)          { serial3_end(); }

  232. 	virtual void transmitterEnable(uint8_t pin) { serial3_set_transmit_pin(pin); }

  233. 	virtual int available(void)     { return serial3_available(); }

  234. 	virtual int peek(void)          { return serial3_peek(); }

  235. 	virtual int read(void)          { return serial3_getchar(); }

  236. 	virtual void flush(void)        { serial3_flush(); }

  237. 	virtual void clear(void)	{ serial3_clear(); }

  238. 	virtual int availableForWrite(void) { return serial3_write_buffer_free(); }

  239. 	virtual size_t write(uint8_t c) { serial3_putchar(c); return 1; }

  240. 	virtual size_t write(unsigned long n)   { return write((uint8_t)n); }

  241. 	virtual size_t write(long n)            { return write((uint8_t)n); }

  242. 	virtual size_t write(unsigned int n)    { return write((uint8_t)n); }

  243. 	virtual size_t write(int n)             { return write((uint8_t)n); }

  244. 	virtual size_t write(const uint8_t *buffer, size_t size)

  245. 					{ serial3_write(buffer, size); return size; }

  246.         virtual size_t write(const char *str)	{ size_t len = strlen(str);

  247. 					  serial3_write((const uint8_t *)str, len);

  248. 					  return len; }

  249. 	virtual size_t write9bit(uint32_t c)	{ serial3_putchar(c); return 1; }

  250. };

  251. extern HardwareSerial3 Serial3;

  252. extern void serialEvent3(void);

  253. 

  254. #endif

  255. #endif