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framework-arduinoteensy-cxx20
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PlatformIO package of the Teensy core framework compatible with GCC 10 & C++20
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framework-arduinoteensy-cxx20/libraries/UTFT/hardware/arm/HW_Teensy3.h

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  1. /**

  2.  * Set your pins here

  3.  * For 8-bit data bus, pins DB_8 to DB_15 are used.

  4.  *

  5.  * Teensy 3.0 pin definitions created by Dawnmist

  6.  * http://forum.pjrc.com/threads/18002-Teensy-3-0-driving-an-SSD1289-with-utft?p=34719&viewfull=1#post34719

  7.  *

  8.  * There's 3 alternative sets of pin definitions that can be used with the

  9.  * Teensy 3 using this header file. Which one is used is controlled by setting

  10.  * the PORTS define to one of "USE_C_D_PORTS", "USE_B_D_PORTS" or

  11.  * "USE_USER_PORTS".

  12.  * 

  13.  * For LCDs with 16 bit data busses:

  14.  *

  15.  * If PORTS = USE_B_D_PORTS:

  16.  *   - Port B 0-3,16-19 and Port D 0-7 will be used. This is slightly slower

  17.  *     than USE_C_D_PORTS, because we need to do the write to port B in 2 steps

  18.  *     (clear pins 0-3,16-19, then set those pins to match our data). Port D

  19.  *     access is still a single write. This means it takes 3 writes to the pins

  20.  *     instead of the 2 used in USE_C_D_PORTS - but it leaves the SPI port pins

  21.  *     available for use, so gives the fastest result when you need to use an

  22.  *     SD Card/something on the SPI bus as well.

  23.  *     Port D (0-7) = DB_8=2, DB_9=14, DB_10=7, DB_11=8, DB_12=6, DB_13=20, DB_14=21, DB_15=5

  24.  *     Port B (0-3,16-19) = DB_0=16, DB_1=17, DB_2=19, DB_3=18, DB_4=0, DB_5=1, DB_6=32, DB_7=25

  25.  *

  26.  * If PORTS = USE_C_D_PORTS:

  27.  *   - Port C 0-7 and Port D 0-7 will be used. Because these are the bottom

  28.  *     8 pins of each port, we can write to them in one write cycle each. This

  29.  *     is the fastest screen data write - but Port C's pins conflict with the

  30.  *     SPI port, so you won't have access to hardware SPI. If you're using an

  31.  *     SD Card, you will *need* the hardware SPI. This setting should only be

  32.  *     used when hardware SPI is *not* needed.

  33.  *     Port D (0-7) = DB_8=2, DB_9=14, DB_10=7, DB_11=8, DB_12=6, DB_13=20, DB_14=21, DB_15=5

  34.  *     Port C (0-7) = DB_0=15, DB_1=22, DB_2=23, DB_3=9, DB_4=10, DB_5=13, DB_6=11, DB_7=12

  35.  *

  36.  * If PORTS = USE_USER_PORTS

  37.  *   - This allows you to define your own set of pins to use. Since we're not

  38.  *     collating them into groupings that can have their writes optimized, it

  39.  *     will take 16 write cycles to write out the data for one pixel. However,

  40.  *     it also gives you the most flexibility in which pins you use for the

  41.  *     LCD data bus. If high-speed/optimized data writes is not important to you

  42.  *     but simplicity of wiring layout is (or if the above options conflict with

  43.  *     something else you're using on the teensy), you can use this setting to

  44.  *     set the pins where-ever you'd like them to be. By default it's set to

  45.  *     pins DB0-DB15 = 0-15. You should modify the "DB_0" through to "DB_15"

  46.  *     defines to match the pins you wish to use.

  47.  * 

  48.  * For LCDs with 8 bit data busses:

  49.  * Use the pin defines for DB_8 to DB_15 to connect to your LCD. This puts them

  50.  * on Port D in both the USE_C_D_PORTS and USE_B_D_PORTS settings, making those

  51.  * two settings equivalent (and a single write to set the pins on the bus).

  52.  */

  53. #define USE_USER_PORTS 0

  54. #define USE_C_D_PORTS 1

  55. #define USE_B_D_PORTS 2

  56. 

  57. // SET WHICH PIN DEFINITIONS TO USE HERE

  58. // (only uncomment 1 of these 3 lines)

  59. //

  60. #define PORTS  USE_B_D_PORTS

  61. //#define PORTS  USE_C_D_PORTS

  62. //#define PORTS  USE_USER_PORTS

  63. 

  64. #if (PORTS == USE_USER_PORTS)

  65. 	#pragma message("Using user-defined pins")

  66. 	#define DB_0 0

  67. 	#define DB_1 1

  68. 	#define DB_2 2

  69. 	#define DB_3 3

  70. 	#define DB_4 4

  71. 	#define DB_5 5

  72. 	#define DB_6 6

  73. 	#define DB_7 7

  74. 	#define DB_8 8

  75. 	#define DB_9 9

  76. 	#define DB_10 10

  77. 	#define DB_11 11

  78. 	#define DB_12 12

  79. 	#define DB_13 13

  80. 	#define DB_14 14

  81. 	#define DB_15 15

  82. #elif (PORTS == USE_C_D_PORTS)

  83. 	#pragma message("Using Ports C&D - pins should be connected to:")

  84. 	#pragma message ("DB_0=15, DB_1=22, DB_2=23, DB_3=9, DB_4=10, DB_5=13, DB_6=11, DB_7=12")

  85. 	#pragma message ("DB_8=2, DB_9=14, DB_10=7, DB_11=8, DB_12=6, DB_13=20, DB_14=21, DB_15=5")

  86. 	#pragma message ("If using a display with an 8-bit bus, use connections to DB_8 to DB_15")

  87. 	#define DB_0 15

  88. 	#define DB_1 22

  89. 	#define DB_2 23

  90. 	#define DB_3 9

  91. 	#define DB_4 10

  92. 	#define DB_5 13

  93. 	#define DB_6 11

  94. 	#define DB_7 12

  95. 	#define DB_8 2

  96. 	#define DB_9 14

  97. 	#define DB_10 7

  98. 	#define DB_11 8

  99. 	#define DB_12 6

  100. 	#define DB_13 20

  101. 	#define DB_14 21

  102. 	#define DB_15 5

  103. #elif (PORTS == USE_B_D_PORTS)

  104. 	#pragma message("Using Ports B&D - pins should be connected to:")

  105. 	#if defined(__MK64FX512__) || defined(__MK66FX1M0__)

  106. 	#pragma message ("DB_0=16, DB_1=17, DB_2=19, DB_3=18, DB_4=0, DB_5=1, DB_6=29, DB_7=30")

  107. 	#else

  108. 	#pragma message ("DB_0=16, DB_1=17, DB_2=19, DB_3=18, DB_4=0, DB_5=1, DB_6=32, DB_7=25")

  109. 	#endif

  110. 	#pragma message ("DB_8=2, DB_9=14, DB_10=7, DB_11=8, DB_12=6, DB_13=20, DB_14=21, DB_15=5")

  111. 	#pragma message ("If using a display with an 8-bit bus, use connections to DB_8 to DB_15")

  112. 	#define DB_0 16

  113. 	#define DB_1 17

  114. 	#define DB_2 19

  115. 	#define DB_3 18

  116. 	#define DB_4 0

  117. 	#define DB_5 1

  118. 	#if defined(__MK64FX512__) || defined(__MK66FX1M0__)

  119. 	#define DB_6 29

  120. 	#define DB_7 30

  121. 	#else

  122. 	#define DB_6 32

  123. 	#define DB_7 25

  124. 	#endif

  125. 	#define DB_8 2

  126. 	#define DB_9 14

  127. 	#define DB_10 7

  128. 	#define DB_11 8

  129. 	#define DB_12 6

  130. 	#define DB_13 20

  131. 	#define DB_14 21

  132. 	#define DB_15 5

  133. #endif

  134. 

  135. // *** Hardware specific functions ***

  136. void UTFT::_hw_special_init()

  137. {

  138. }

  139. 

  140. void UTFT::LCD_Writ_Bus(char ch,char cl, byte mode)

  141. {

  142. 	switch (mode)

  143. 	{

  144. 	case 1:

  145. 		// Not implemented

  146. 		break;

  147. 	case 8:

  148. #if (PORTS == USE_C_D_PORTS) || (PORTS == USE_B_D_PORTS)

  149. 		*(volatile uint8_t *)(&GPIOD_PDOR) = ch;

  150. 		pulse_low(P_WR, B_WR);

  151. 		*(volatile uint8_t *)(&GPIOD_PDOR) = cl;

  152. 		pulse_low(P_WR, B_WR);

  153. #else

  154. 		((ch & 0x80) != 0) ? digitalWriteFast(DB_15, HIGH) : digitalWriteFast(DB_15, LOW);

  155. 		((ch & 0x40) != 0) ? digitalWriteFast(DB_14, HIGH) : digitalWriteFast(DB_14, LOW);

  156. 		((ch & 0x20) != 0) ? digitalWriteFast(DB_13, HIGH) : digitalWriteFast(DB_13, LOW);

  157. 		((ch & 0x10) != 0) ? digitalWriteFast(DB_12, HIGH) : digitalWriteFast(DB_12, LOW);

  158. 		((ch & 0x08) != 0) ? digitalWriteFast(DB_11, HIGH) : digitalWriteFast(DB_11, LOW);

  159. 		((ch & 0x04) != 0) ? digitalWriteFast(DB_10, HIGH) : digitalWriteFast(DB_10, LOW);

  160. 		((ch & 0x02) != 0) ? digitalWriteFast(DB_9, HIGH) : digitalWriteFast(DB_9, LOW);

  161. 		((ch & 0x01) != 0) ? digitalWriteFast(DB_8, HIGH) : digitalWriteFast(DB_8, LOW);

  162. 		pulse_low(P_WR, B_WR);

  163. 		((cl & 0x80) != 0) ? digitalWriteFast(DB_15, HIGH) : digitalWriteFast(DB_15, LOW);

  164. 		((cl & 0x40) != 0) ? digitalWriteFast(DB_14, HIGH) : digitalWriteFast(DB_14, LOW);

  165. 		((cl & 0x20) != 0) ? digitalWriteFast(DB_13, HIGH) : digitalWriteFast(DB_13, LOW);

  166. 		((cl & 0x10) != 0) ? digitalWriteFast(DB_12, HIGH) : digitalWriteFast(DB_12, LOW);

  167. 		((cl & 0x08) != 0) ? digitalWriteFast(DB_11, HIGH) : digitalWriteFast(DB_11, LOW);

  168. 		((cl & 0x04) != 0) ? digitalWriteFast(DB_10, HIGH) : digitalWriteFast(DB_10, LOW);

  169. 		((cl & 0x02) != 0) ? digitalWriteFast(DB_9, HIGH) : digitalWriteFast(DB_9, LOW);

  170. 		((cl & 0x01) != 0) ? digitalWriteFast(DB_8, HIGH) : digitalWriteFast(DB_8, LOW);

  171. 		pulse_low(P_WR, B_WR);

  172. #endif

  173. 		break;

  174. 	case 16:

  175. #if (PORTS == USE_C_D_PORTS)

  176. 		*(volatile uint8_t *)(&GPIOD_PDOR) = ch;

  177. 		*(volatile uint8_t *)(&GPIOC_PDOR) = cl;

  178. #elif (PORTS == USE_B_D_PORTS)

  179. 		*(volatile uint8_t *)(&GPIOD_PDOR) = ch;

  180. 		// clear data lines B0-3,B16-19

  181.   		GPIOB_PCOR = 0x000F000F;

  182.   		// set data lines 0-3,16-19 if set in cl

  183.         GPIOB_PSOR = (0x0F & cl) | ((cl >> 4) << 16);

  184. #else

  185. 		((ch & 0x80) != 0) ? digitalWriteFast(DB_15, HIGH) : digitalWriteFast(DB_15, LOW);

  186. 		((ch & 0x40) != 0) ? digitalWriteFast(DB_14, HIGH) : digitalWriteFast(DB_14, LOW);

  187. 		((ch & 0x20) != 0) ? digitalWriteFast(DB_13, HIGH) : digitalWriteFast(DB_13, LOW);

  188. 		((ch & 0x10) != 0) ? digitalWriteFast(DB_12, HIGH) : digitalWriteFast(DB_12, LOW);

  189. 		((ch & 0x08) != 0) ? digitalWriteFast(DB_11, HIGH) : digitalWriteFast(DB_11, LOW);

  190. 		((ch & 0x04) != 0) ? digitalWriteFast(DB_10, HIGH) : digitalWriteFast(DB_10, LOW);

  191. 		((ch & 0x02) != 0) ? digitalWriteFast(DB_9, HIGH) : digitalWriteFast(DB_9, LOW);

  192. 		((ch & 0x01) != 0) ? digitalWriteFast(DB_8, HIGH) : digitalWriteFast(DB_8, LOW);

  193. 		((cl & 0x80) != 0) ? digitalWriteFast(DB_7, HIGH) : digitalWriteFast(DB_7, LOW);

  194. 		((cl & 0x40) != 0) ? digitalWriteFast(DB_6, HIGH) : digitalWriteFast(DB_6, LOW);

  195. 		((cl & 0x20) != 0) ? digitalWriteFast(DB_5, HIGH) : digitalWriteFast(DB_5, LOW);

  196. 		((cl & 0x10) != 0) ? digitalWriteFast(DB_4, HIGH) : digitalWriteFast(DB_4, LOW);

  197. 		((cl & 0x08) != 0) ? digitalWriteFast(DB_3, HIGH) : digitalWriteFast(DB_3, LOW);

  198. 		((cl & 0x04) != 0) ? digitalWriteFast(DB_2, HIGH) : digitalWriteFast(DB_2, LOW);

  199. 		((cl & 0x02) != 0) ? digitalWriteFast(DB_1, HIGH) : digitalWriteFast(DB_1, LOW);

  200. 		((cl & 0x01) != 0) ? digitalWriteFast(DB_0, HIGH) : digitalWriteFast(DB_0, LOW);

  201. #endif

  202. 		pulse_low(P_WR, B_WR);

  203. 		break;

  204. 	}

  205. }

  206. 

  207. void UTFT::_set_direction_registers(byte mode)

  208. {

  209.     pinMode(DB_8, OUTPUT);

  210.     pinMode(DB_9, OUTPUT);

  211.     pinMode(DB_10, OUTPUT);

  212.     pinMode(DB_11, OUTPUT);

  213.     pinMode(DB_12, OUTPUT);

  214.     pinMode(DB_13, OUTPUT);

  215.     pinMode(DB_14, OUTPUT);

  216.     pinMode(DB_15, OUTPUT);

  217.     if (mode == 16)

  218.     {

  219. 	pinMode(DB_0, OUTPUT);

  220. 	pinMode(DB_1, OUTPUT);

  221. 	pinMode(DB_2, OUTPUT);

  222. 	pinMode(DB_3, OUTPUT);

  223. 	pinMode(DB_4, OUTPUT);

  224. 	pinMode(DB_5, OUTPUT);

  225. 	pinMode(DB_6, OUTPUT);

  226. 	pinMode(DB_7, OUTPUT);

  227.     }

  228. }

  229. void UTFT::_fast_fill_16(int ch, int cl, long pix)

  230. {

  231. 	long blocks;

  232. #if (PORTS == USE_C_D_PORTS)

  233. 		*(volatile uint8_t *)(&GPIOD_PDOR) = ch;

  234. 		*(volatile uint8_t *)(&GPIOC_PDOR) = cl;

  235. #elif (PORTS == USE_B_D_PORTS)

  236. 		*(volatile uint8_t *)(&GPIOD_PDOR) = ch;

  237. 		// clear data lines B0-3,B16-19

  238.   		GPIOB_PCOR = 0x000F000F;

  239.   		// set data lines 0-3,16-19 if set in cl

  240.         GPIOB_PSOR = (0x0F & cl) | ((cl >> 4) << 16);

  241. #else

  242. 		((ch & 0x80) != 0) ? digitalWriteFast(DB_15, HIGH) : digitalWriteFast(DB_15, LOW);

  243. 		((ch & 0x40) != 0) ? digitalWriteFast(DB_14, HIGH) : digitalWriteFast(DB_14, LOW);

  244. 		((ch & 0x20) != 0) ? digitalWriteFast(DB_13, HIGH) : digitalWriteFast(DB_13, LOW);

  245. 		((ch & 0x10) != 0) ? digitalWriteFast(DB_12, HIGH) : digitalWriteFast(DB_12, LOW);

  246. 		((ch & 0x08) != 0) ? digitalWriteFast(DB_11, HIGH) : digitalWriteFast(DB_11, LOW);

  247. 		((ch & 0x04) != 0) ? digitalWriteFast(DB_10, HIGH) : digitalWriteFast(DB_10, LOW);

  248. 		((ch & 0x02) != 0) ? digitalWriteFast(DB_9, HIGH) : digitalWriteFast(DB_9, LOW);

  249. 		((ch & 0x01) != 0) ? digitalWriteFast(DB_8, HIGH) : digitalWriteFast(DB_8, LOW);

  250. 		((cl & 0x80) != 0) ? digitalWriteFast(DB_7, HIGH) : digitalWriteFast(DB_7, LOW);

  251. 		((cl & 0x40) != 0) ? digitalWriteFast(DB_6, HIGH) : digitalWriteFast(DB_6, LOW);

  252. 		((cl & 0x20) != 0) ? digitalWriteFast(DB_5, HIGH) : digitalWriteFast(DB_5, LOW);

  253. 		((cl & 0x10) != 0) ? digitalWriteFast(DB_4, HIGH) : digitalWriteFast(DB_4, LOW);

  254. 		((cl & 0x08) != 0) ? digitalWriteFast(DB_3, HIGH) : digitalWriteFast(DB_3, LOW);

  255. 		((cl & 0x04) != 0) ? digitalWriteFast(DB_2, HIGH) : digitalWriteFast(DB_2, LOW);

  256. 		((cl & 0x02) != 0) ? digitalWriteFast(DB_1, HIGH) : digitalWriteFast(DB_1, LOW);

  257. 		((cl & 0x01) != 0) ? digitalWriteFast(DB_0, HIGH) : digitalWriteFast(DB_0, LOW);

  258. #endif

  259. 	blocks = pix/16;

  260. 	for (int i=0; i<blocks; i++)

  261. 	{

  262. 		pulse_low(P_WR, B_WR);

  263. 		pulse_low(P_WR, B_WR);

  264. 		pulse_low(P_WR, B_WR);

  265. 		pulse_low(P_WR, B_WR);

  266. 		pulse_low(P_WR, B_WR);

  267. 		pulse_low(P_WR, B_WR);

  268. 		pulse_low(P_WR, B_WR);

  269. 		pulse_low(P_WR, B_WR);

  270. 		pulse_low(P_WR, B_WR);

  271. 		pulse_low(P_WR, B_WR);

  272. 		pulse_low(P_WR, B_WR);

  273. 		pulse_low(P_WR, B_WR);

  274. 		pulse_low(P_WR, B_WR);

  275. 		pulse_low(P_WR, B_WR);

  276. 		pulse_low(P_WR, B_WR);

  277. 		pulse_low(P_WR, B_WR);

  278. 	}

  279. 	if ((pix % 16) != 0)

  280. 		for (int i=0; i<(pix % 16); i++)

  281. 		{

  282. 			pulse_low(P_WR, B_WR);

  283. 		}

  284. }

  285. 

  286. void UTFT::_fast_fill_8(int ch, long pix)

  287. {

  288. 	long blocks;

  289. #if (PORTS == USE_C_D_PORTS) || (PORTS == USE_B_D_PORTS)

  290. 		*(volatile uint8_t *)(&GPIOD_PDOR) = ch;

  291. #else

  292. 		((ch & 0x80) != 0) ? digitalWriteFast(DB_15, HIGH) : digitalWriteFast(DB_15, LOW);

  293. 		((ch & 0x40) != 0) ? digitalWriteFast(DB_14, HIGH) : digitalWriteFast(DB_14, LOW);

  294. 		((ch & 0x20) != 0) ? digitalWriteFast(DB_13, HIGH) : digitalWriteFast(DB_13, LOW);

  295. 		((ch & 0x10) != 0) ? digitalWriteFast(DB_12, HIGH) : digitalWriteFast(DB_12, LOW);

  296. 		((ch & 0x08) != 0) ? digitalWriteFast(DB_11, HIGH) : digitalWriteFast(DB_11, LOW);

  297. 		((ch & 0x04) != 0) ? digitalWriteFast(DB_10, HIGH) : digitalWriteFast(DB_10, LOW);

  298. 		((ch & 0x02) != 0) ? digitalWriteFast(DB_9, HIGH) : digitalWriteFast(DB_9, LOW);

  299. 		((ch & 0x01) != 0) ? digitalWriteFast(DB_8, HIGH) : digitalWriteFast(DB_8, LOW);

  300. #endif

  301. 

  302. 	blocks = pix/16;

  303. 	for (int i=0; i<blocks; i++)

  304. 	{

  305. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  306. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  307. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  308. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  309. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  310. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  311. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  312. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  313. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  314. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  315. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  316. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  317. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  318. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  319. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  320. 		pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  321. 	}

  322. 	if ((pix % 16) != 0)

  323. 		for (int i=0; i<(pix % 16); i++)

  324. 		{

  325. 			pulse_low(P_WR, B_WR);pulse_low(P_WR, B_WR);

  326. 		}

  327. }