Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 | /*
* Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
//*****************************************************************************
//
// pin.c
//
// Mapping of peripherals to pins.
//
//*****************************************************************************
//*****************************************************************************
//
//! \addtogroup pin_api
//! @{
//
//*****************************************************************************
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "inc/hw_ocp_shared.h"
#include "pin.h"
//*****************************************************************************
// Macros
//*****************************************************************************
#define PAD_MODE_MASK 0x0000000F
#define PAD_STRENGTH_MASK 0x000000E0
#define PAD_TYPE_MASK 0x00000310
#define PAD_CONFIG_BASE ((OCP_SHARED_BASE + \
OCP_SHARED_O_GPIO_PAD_CONFIG_0))
//*****************************************************************************
// PIN to PAD matrix
//*****************************************************************************
static const unsigned long g_ulPinToPadMap[64] =
{
10,11,12,13,14,15,16,17,255,255,18,
19,20,21,22,23,24,40,28,29,25,255,
255,255,255,255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,255,255,255,
31,255,255,255,255,0,255,32,30,255,1,
255,2,3,4,5,6,7,8,9
};
//*****************************************************************************
//
//! Configures pin mux for the specified pin.
//!
//! \param ulPin is a valid pin.
//! \param ulPinMode is one of the valid mode
//!
//! This function configures the pin mux that selects the peripheral function
//! associated with a particular SOC pin. Only one peripheral function at a
//! time can be associated with a pin, and each peripheral function should
//! only be associated with a single pin at a time.
//!
//! \return none
//
//*****************************************************************************
void PinModeSet(unsigned long ulPin,unsigned long ulPinMode)
{
unsigned long ulPad;
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE);
//
// Set the mode.
//
HWREG(ulPad) = (((HWREG(ulPad) & ~PAD_MODE_MASK) | ulPinMode) & ~(3<<10));
}
//*****************************************************************************
//
//! Gets current pin mux configuration of specified pin.
//!
//! \param ulPin is a valid pin.
//!
//! This function get the current configuration of the pin mux.
//!
//! \return Returns current pin mode if \e ulPin is valid, 0xFF otherwise.
//
//*****************************************************************************
unsigned long PinModeGet(unsigned long ulPin)
{
unsigned long ulPad;
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE) ;
//
// return the mode.
//
return (HWREG(ulPad) & PAD_MODE_MASK);
}
//*****************************************************************************
//
//! Sets the direction of the specified pin(s).
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinIO is the pin direction and/or mode.
//!
//! This function configures the specified pin(s) as either input only or
//! output only or it configures the pin to be under hardware control.
//!
//! The parameter \e ulPinIO is an enumerated data type that can be one of
//! the following values:
//!
//! - \b PIN_DIR_MODE_IN
//! - \b PIN_DIR_MODE_OUT
//! - \b PIN_DIR_MODE_HW
//!
//! where \b PIN_DIR_MODE_IN specifies that the pin is programmed as a
//! input only, \b PIN_DIR_MODE_OUT specifies that the pin is
//! programmed output only, and \b PIN_DIR_MODE_HW specifies that the pin is
//! placed under hardware control.
//!
//!
//! \return None.
//
//*****************************************************************************
void PinDirModeSet(unsigned long ulPin, unsigned long ulPinIO)
{
unsigned long ulPad;
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE);
//
// Set the direction
//
HWREG(ulPad) = ((HWREG(ulPad) & ~0xC00) | ulPinIO);
}
//*****************************************************************************
//
//! Gets the direction of a pin.
//!
//! \param ulPin is one of the valid pin.
//!
//! This function gets the direction and control mode for a specified pin on
//! the selected GPIO port. The pin can be configured as either an input only
//! or output only, or it can be under hardware control. The type of control
//! and direction are returned as an enumerated data type.
//!
//! \return Returns one of the enumerated data types described for
//! GPIODirModeSet().
//
//*****************************************************************************
unsigned long PinDirModeGet(unsigned long ulPin)
{
unsigned long ulPad;
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE);
//
// Return the direction
//
return ((HWREG(ulPad) & 0xC00));
}
//*****************************************************************************
//
//! Gets Pin output drive strength and Type
//!
//! \param ulPin is one of the valid pin
//! \param pulPinStrength is pointer to storage for output drive strength
//! \param pulPinType is pinter to storage for pin type
//!
//! This function gets the pin type and output drive strength for the pin
//! specified by \e ulPin parameter. Parameters \e pulPinStrength and
//! \e pulPinType corresponds to the values used in PinConfigSet().
//!
//!
//! \return None.
//
//*****************************************************************************
void PinConfigGet(unsigned long ulPin,unsigned long *pulPinStrength,
unsigned long *pulPinType)
{
unsigned long ulPad;
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE);
//
// Get the type
//
*pulPinType = (HWREG(ulPad) & PAD_TYPE_MASK);
//
// Get the output drive strength
//
*pulPinStrength = (HWREG(ulPad) & PAD_STRENGTH_MASK);
}
//*****************************************************************************
//
//! Configure Pin output drive strength and Type
//!
//! \param ulPin is one of the valid pin
//! \param ulPinStrength is logical OR of valid output drive strengths.
//! \param ulPinType is one of the valid pin type.
//!
//! This function sets the pin type and strength for the pin specified by
//! \e ulPin parameter.
//!
//! The parameter \e ulPinStrength should be one of the following
//! - \b PIN_STRENGTH_2MA
//! - \b PIN_STRENGTH_4MA
//! - \b PIN_STRENGTH_6MA
//!
//!
//! The parameter \e ulPinType should be one of the following
//! For standard type
//!
//! - \b PIN_TYPE_STD
//! - \b PIN_TYPE_STD_PU
//! - \b PIN_TYPE_STD_PD
//!
//! And for Open drain type
//!
//! - \b PIN_TYPE_OD
//! - \b PIN_TYPE_OD_PU
//! - \b PIN_TYPE_OD_PD
//!
//! \return None.
//
//*****************************************************************************
void PinConfigSet(unsigned long ulPin,unsigned long ulPinStrength,
unsigned long ulPinType)
{
unsigned long ulPad;
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Write the register
//
if(ulPinType == PIN_TYPE_ANALOG)
{
//
// Isolate the input
//
HWREG(0x4402E144) |= ((0x80 << ulPad) & (0x1E << 8));
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE);
//
// Isolate the output
//
HWREG(ulPad) = 0xC00;
}
else
{
//
// Enable the input
//
HWREG(0x4402E144) &= ~((0x80 << ulPad) & (0x1E << 8));
//
// Calculate the register address
//
ulPad = ((ulPad << 2) + PAD_CONFIG_BASE);
//
// Write the configuration
//
HWREG(ulPad) = ((HWREG(ulPad) & ~(PAD_STRENGTH_MASK | PAD_TYPE_MASK)) |
(ulPinStrength | ulPinType ));
}
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by UART peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The UART pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin(s); other configurations may work as well depending upon the
//! board setup (for example, using the on-chip pull-ups).
//!
//!
//! \note This function cannot be used to turn any pin into a UART pin; it
//! only sets the pin mode and configures it for proper UART operation.
//!
//!
//! \return None.
//
//*****************************************************************************
void PinTypeUART(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set the pin to specified mode
//
PinModeSet(ulPin,ulPinMode);
//
// Set the pin for standard operation
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA,PIN_TYPE_STD);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by I2C peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The I2C pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! the pin.
//!
//!
//! \note This function cannot be used to turn any pin into a I2C pin; it
//! only sets the pin mode and configures it for proper I2C operation.
//!
//!
//! \return None.
//
//*****************************************************************************
void PinTypeI2C(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set the pin to specified mode
//
PinModeSet(ulPin,ulPinMode);
//
// Set the pin for open-drain operation with a weak pull-up.
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA,PIN_TYPE_OD_PU);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by SPI peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The SPI pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin.
//!
//!
//! \note This function cannot be used to turn any pin into a SPI pin; it
//! only sets the pin mode and configures it for proper SPI operation.
//!
//!
//! \return None.
//
//*****************************************************************************
void PinTypeSPI(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set the pin to specified mode
//
PinModeSet(ulPin,ulPinMode);
//
// Set the pin for standard operation
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA|PIN_STRENGTH_4MA,PIN_TYPE_STD);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by I2S peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The I2S pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin.
//!
//!
//! \note This function cannot be used to turn any pin into a I2S pin; it
//! only sets the pin mode and configures it for proper I2S operation.
//!
//! \return None.
//
//*****************************************************************************
void PinTypeI2S(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set the pin to specified mode
//
PinModeSet(ulPin,ulPinMode);
//
// Set the pin for standard operation
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA|PIN_STRENGTH_4MA,PIN_TYPE_STD);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by Timer peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The timer PWM pins must be properly configured for the Timer peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin; other configurations may work as well depending upon the
//! board setup (for example, using the on-chip pull-ups).
//!
//!
//! \note This function cannot be used to turn any pin into a timer PWM pin; it
//! only sets the pin mode and configures it for proper timer PWM operation.
//!
//! \return None.
//
//*****************************************************************************
void PinTypeTimer(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set the pin to specified mode
//
PinModeSet(ulPin,ulPinMode);
//
// Set the pin for standard operation
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA|PIN_STRENGTH_4MA,PIN_TYPE_STD);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by Camera peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The Camera pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin.
//!
//!
//! \note This function cannot be used to turn any pin into a Camera pin; it
//! only sets the pin mode and configures it for proper Camera operation.
//!
//! \return None.
//
//*****************************************************************************
void PinTypeCamera(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set the pin to specified mode
//
PinModeSet(ulPin,ulPinMode);
//
// Set the pin for standard operation
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA|PIN_STRENGTH_4MA,PIN_TYPE_STD);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by GPIO peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//! \param bOpenDrain is one to decide either OpenDrain or STD
//!
//! The GPIO pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin.
//!
//!
//! \return None.
//
//*****************************************************************************
void PinTypeGPIO(unsigned long ulPin,unsigned long ulPinMode,tBoolean bOpenDrain)
{
//
// Set the pin for standard push-pull operation.
//
if(bOpenDrain)
{
PinConfigSet(ulPin, PIN_STRENGTH_2MA, PIN_TYPE_OD);
}
else
{
PinConfigSet(ulPin, PIN_STRENGTH_2MA, PIN_TYPE_STD);
}
//
// Set the pin to specified mode
//
PinModeSet(ulPin, ulPinMode);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by ADC
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The ADC pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin.
//!
//!
//! \note This function cannot be used to turn any pin into a ADC pin; it
//! only sets the pin mode and configures it for proper ADC operation.
//!
//! \return None.
//
//*****************************************************************************
void PinTypeADC(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Configure the Pin
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA,PIN_TYPE_ANALOG);
}
//*****************************************************************************
//
//! Sets the pin mode and configures the pin for use by SD Host peripheral
//!
//! \param ulPin is one of the valid pin.
//! \param ulPinMode is one of the valid pin mode.
//!
//! The MMC pins must be properly configured for the peripheral to
//! function correctly. This function provides a typical configuration for
//! those pin.
//!
//!
//! \note This function cannot be used to turn any pin into a SD Host pin; it
//! only sets the pin mode and configures it for proper SD Host operation.
//!
//! \return None.
//
//*****************************************************************************
void PinTypeSDHost(unsigned long ulPin,unsigned long ulPinMode)
{
//
// Set pin mode
//
PinModeSet(ulPin,ulPinMode);
//
// Configure the Pin
//
PinConfigSet(ulPin,PIN_STRENGTH_2MA,PIN_TYPE_STD);
}
//*****************************************************************************
//
//! Sets the hysteresis for all the pins
//!
//! \param ulHysteresis is one of the valid predefined hysterisys values
//!
//! This function sets the hysteresis vlaue for all the pins. The parameter
//! \e ulHysteresis can be on one the following:
//! -\b PIN_HYSTERESIS_OFF - To turn Off hysteresis, default on POR
//! -\b PIN_HYSTERESIS_10 - To turn On hysteresis, 10%
//! -\b PIN_HYSTERESIS_20 - To turn On hysteresis, 20%
//! -\b PIN_HYSTERESIS_30 - To turn On hysteresis, 30%
//! -\b PIN_HYSTERESIS_40 - To turn On hysteresis, 40%
//!
//! \return None.
//
//*****************************************************************************
void PinHysteresisSet(unsigned long ulHysteresis)
{
unsigned long ulRegValue;
//
// Read the current value
//
ulRegValue = (HWREG( OCP_SHARED_BASE + OCP_SHARED_O_GPIO_PAD_CMN_CONFIG )
& ~(0x0000001C));
//
// Set the new Hysteresis
//
if( ulHysteresis != PIN_HYSTERESIS_OFF )
{
ulRegValue |= (ulHysteresis & 0x0000001C);
}
//
// Write the new value
//
HWREG( OCP_SHARED_BASE + OCP_SHARED_O_GPIO_PAD_CMN_CONFIG ) = ulRegValue;
}
//*****************************************************************************
//
//! Sets the level of the pin when locked
//!
//! \param ulPin is one of the valid pin.
//! \param ucLevel is the level the pin drives when locked
//!
//! This function sets the pin level when the pin is locked using
//! \sa PinLock() API.
//!
//! By default all pins are set to drive 0.
//!
//! \note Use case is to park the pins when entering LPDS
//!
//! \return None.
//
//*****************************************************************************
void PinLockLevelSet(unsigned long ulPin, unsigned char ucLevel)
{
unsigned long ulPad;
//
// Supported only in ES2.00 and Later devices i.e. ROM Version 2.x.x or greater
//
if( (HWREG(0x00000400) & 0xFFFF) >= 2 )
{
//
// Get the corresponding Pad
//
ulPad = g_ulPinToPadMap[ulPin & 0x3F];
//
// Get the required bit
//
ulPad = 1 << ulPad;
if(ucLevel)
{
HWREG( OCP_SHARED_BASE + OCP_SHARED_O_SPARE_REG_6 ) |= ulPad;
}
else
{
HWREG( OCP_SHARED_BASE + OCP_SHARED_O_SPARE_REG_6 ) &= ~ulPad;
}
}
}
//*****************************************************************************
//
//! Locks all the pins to configured level(s).
//!
//! \param ulOutEnable the bit-packed representation of pins to be set as output
//!
//! This function locks all the pins to the pre-configure level. By default
//! the pins are set to drive 0. Default level can be changed using
//! \sa PinLockLevelSet() API.
//!
//! The \e ulOutEnable paramter is bit-packed representation of pins that
//! are required to be enabled as output. If a bit is set 1, the corresponding
//! pin (as shown below) are set and locked as output.
//!
//! |------|-----------------------------------------------|
//! | Bit |31|30|29|28|27|26|25|24|23|22|21|20|19|18|17|16|
//! |------|-----------------------------------------------|
//! | Pin |xx|xx|20|19|30|29|21|17|16|15|14|13|12|11|08|07|
//! |------|-----------------------------------------------|
//!
//! |------|-----------------------------------------------|
//! | Bit |15|14|13|12|11|10|09|08|07|06|05|04|03|02|01|00|
//! |------|-----------------------------------------------|
//! | Pin |06|05|04|03|02|01|64|63|62|61|60|59|58|57|55|50|
//! |------|-----------------------------------------------|
//!
//!
//! \note Use case is to park the pins when entering LPDS
//!
//! \return None.
//
//*****************************************************************************
void PinLock(unsigned long ulOutEnable)
{
//
// Supported only in ES2.00 and Later devices i.e. ROM Version 2.x.x or greater
//
if( (HWREG(0x00000400) & 0xFFFF) >= 2 )
{
//
// Enable/disable the pin(s) output
//
HWREG( OCP_SHARED_BASE + OCP_SHARED_O_SPARE_REG_7 ) = ~ulOutEnable;
//
// Lock the pins to selected levels
//
HWREG( OCP_SHARED_BASE + OCP_SHARED_O_SPARE_REG_5 ) |= (3 << 24);
}
}
//*****************************************************************************
//
//! Unlocks all the pins.
//!
//! This function unlocks all the pins and can be used for peripheral function.
//!
//! By default all the pins are in unlocked state.
//!
//! \note Use case is to un-park the pins when exiting LPDS
//!
//! \return None.
//
//*****************************************************************************
void PinUnlock()
{
//
// Supported only in ES2.00 and Later devices i.e. ROM Version 2.x.x or greater
//
if( (HWREG(0x00000400) & 0xFFFF) >= 2 )
{
//
// Unlock the pins
//
HWREG( OCP_SHARED_BASE + OCP_SHARED_O_SPARE_REG_5 ) &= ~(3 << 24);
}
}
//*****************************************************************************
//
// Gets pad number from pin number
//
// \param ulPin is a valid pin number
//
// This function return the pad corresponding to the specified pin
//
// \return Pad number on success, 0xFF otherwise
//
//*****************************************************************************
unsigned long PinToPadGet(unsigned long ulPin)
{
//
// Return the corresponding Pad
//
return g_ulPinToPadMap[ulPin & 0x3F];
}
//*****************************************************************************
//
// Gets pin number from pad number
//
// \param ulPad is a valid pad number
//
// This function return the pin corresponding to the specified pad
//
// \return Pin number on success, 0xFF otherwise
//
//*****************************************************************************
unsigned long PinFromPadGet(unsigned long ulPad)
{
unsigned long ulPin;
//
// search and return the pin number
//
for(ulPin=0; ulPin < sizeof(g_ulPinToPadMap)/4; ulPin++)
{
if(g_ulPinToPadMap[ulPin] == ulPad)
{
return ulPin;
}
}
return 0xFF;
}
//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************
|