📄 stm32f10x_gpio.lst
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357 if (BitVal != Bit_RESET)
358 {
359 GPIOx->BSRR = GPIO_Pin;
360 }
361 else
362 {
363 GPIOx->BRR = GPIO_Pin;
364 }
365 }
366
367 /*******************************************************************************
368 * Function Name : GPIO_Write
369 * Description : Writes data to the specified GPIO data port.
370 * Input : - GPIOx: where x can be (A..E) to select the GPIO peripheral.
371 * - PortVal: specifies the value to be written to the port output
372 * data register.
373 * Output : None
374 * Return : None
375 *******************************************************************************/
376 void GPIO_Write(GPIO_TypeDef* GPIOx, u16 PortVal)
377 {
378 GPIOx->ODR = PortVal;
379 }
380
381 /*******************************************************************************
382 * Function Name : GPIO_PinLockConfig
383 * Description : Locks GPIO Pins configuration registers.
384 * Input : - GPIOx: where x can be (A..E) to select the GPIO peripheral.
385 * - GPIO_Pin: specifies the port bit to be written.
386 * This parameter can be any combination of GPIO_Pin_x where
387 * x can be (0..15).
388 * Output : None
389 * Return : None
390 *******************************************************************************/
391 void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
392 {
393 u32 tmp = 0x00010000;
394
395 /* Check the parameters */
396 assert(IS_GPIO_PIN(GPIO_Pin));
397
398 tmp |= GPIO_Pin;
399 /* Set LCKK bit */
400 GPIOx->LCKR = tmp;
401 /* Reset LCKK bit */
402 GPIOx->LCKR = GPIO_Pin;
403 /* Set LCKK bit */
404 GPIOx->LCKR = tmp;
405 /* Read LCKK bit*/
406 tmp = GPIOx->LCKR;
407 /* Read LCKK bit*/
408 tmp = GPIOx->LCKR;
409 }
410
411 /*******************************************************************************
412 * Function Name : GPIO_EventOutputConfig
413 * Description : Selects the GPIO pin used as Event output.
414 * Input : - GPIO_PortSource: selects the GPIO port to be used as source
415 * for Event output.
416 * This parameter can be GPIO_PortSourceGPIOx where x can be
417 * (A..E).
418 * - GPIO_PinSource: specifies the pin for the Event output.
419 * This parameter can be GPIO_PinSourcex where x can be (0..15).
420 * Output : None
421 * Return : None
422 *******************************************************************************/
423 void GPIO_EventOutputConfig(u8 GPIO_PortSource, u8 GPIO_PinSource)
424 {
425 u32 tmpreg = 0x00;
426
427 /* Check the parameters */
428 assert(IS_GPIO_PORT_SOURCE(GPIO_PortSource));
429 assert(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
430
431 tmpreg = AFIO->EVCR;
432 /* Clear the PORT[6:4] and PIN[3:0] bits */
433 tmpreg &= EVCR_PORTPINCONFIG_MASK;
434 tmpreg |= (u32)GPIO_PortSource << 0x04;
435 tmpreg |= GPIO_PinSource;
436
437 AFIO->EVCR = tmpreg;
438 }
439
440 /*******************************************************************************
441 * Function Name : GPIO_EventOutputCmd
442 * Description : Enables or disables the Event Output.
443 * Input : - NewState: new state of the Event output.
444 * This parameter can be: ENABLE or DISABLE.
445 * Output : None
446 * Return : None
447 *******************************************************************************/
448 void GPIO_EventOutputCmd(FunctionalState NewState)
449 {
450 /* Check the parameters */
451 assert(IS_FUNCTIONAL_STATE(NewState));
452
453 *(vu32 *) EVCR_EVOE_BB = (u32)NewState;
454 }
455
456 /*******************************************************************************
457 * Function Name : GPIO_PinRemapConfig
458 * Description : Changes the mapping of the specified pin.
459 * Input : - GPIO_Remap: selects the pin to remap.
460 * This parameter can be one of the following values:
461 * - GPIO_Remap_SPI1
462 * - GPIO_Remap_I2C1
463 * - GPIO_Remap_USART1
464 * - GPIO_Remap_USART2
465 * - GPIO_PartialRemap_USART3
466 * - GPIO_FullRemap_USART3
467 * - GPIO_PartialRemap_TIM1
468 * - GPIO_FullRemap_TIM1
469 * - GPIO_PartialRemap1_TIM2
470 * - GPIO_PartialRemap2_TIM2
471 * - GPIO_FullRemap_TIM2
472 * - GPIO_PartialRemap_TIM3
473 * - GPIO_FullRemap_TIM3
474 * - GPIO_Remap_TIM4
475 * - GPIO_Remap1_CAN
476 * - GPIO_Remap2_CAN
477 * - GPIO_Remap_PD01
478 * - GPIO_Remap_SWJ_NoJTRST
479 * - GPIO_Remap_SWJ_JTAGDisable
480 * - GPIO_Remap_SWJ_Disable
481 * - NewState: new state of the port pin remapping.
482 * This parameter can be: ENABLE or DISABLE.
483 * Output : None
484 * Return : None
485 *******************************************************************************/
486 void GPIO_PinRemapConfig(u32 GPIO_Remap, FunctionalState NewState)
487 {
488 u32 tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00;
489
490 /* Check the parameters */
491 assert(IS_GPIO_REMAP(GPIO_Remap));
492 assert(IS_FUNCTIONAL_STATE(NewState));
493
494 tmpreg = AFIO->MAPR;
495
496 tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10;
497 tmp = GPIO_Remap & LSB_MASK;
498
499 if ((GPIO_Remap & DBGAFR_LOCATION_MASK) == DBGAFR_LOCATION_MASK)
500 {
501 tmpreg &= DBGAFR_SWJCFG_MASK;
502 }
503 else if ((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK)
504 {
505 tmp1 = ((u32)0x03) << tmpmask;
506 tmpreg &= ~tmp1;
507 }
508 else
509 {
510 tmpreg &= ~tmp;
511 }
512
513 if (NewState != DISABLE)
514 {
515 if ((GPIO_Remap & DBGAFR_LOCATION_MASK) == DBGAFR_LOCATION_MASK)
516 {
517 tmpreg |= (tmp << 0x10);
518 }
519 else
520 {
521 tmpreg |= tmp;
522 }
523 }
524 AFIO->MAPR = tmpreg;
525 }
526
527 /*******************************************************************************
528 * Function Name : GPIO_EXTILineConfig
529 * Description : Selects the GPIO pin used as EXTI Line.
530 * Input : - GPIO_PortSource: selects the GPIO port to be used as
531 * source for EXTI lines.
532 * - GPIO_PinSource: specifies the EXTI line to be configured.
533 * This parameter can be GPIO_PinSourcex where x can be (0..15).
534 * Output : None
535 * Return : None
536 *******************************************************************************/
537 void GPIO_EXTILineConfig(u8 GPIO_PortSource, u8 GPIO_PinSource)
538 {
539 u32 tmp = 0x00;
540
541 /* Check the parameters */
542 assert(IS_GPIO_PORT_SOURCE(GPIO_PortSource));
543 assert(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
544
545 tmp = ((u32)0x0F) << (0x04 * (GPIO_PinSource & (u8)0x03));
546
547 AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;
548 AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((u32)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (u8)0x03)));
549 }
550
551 /******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
Errors: 1
Warnings: none
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