diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c')
-rw-r--r-- | c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c | 499 |
1 files changed, 0 insertions, 499 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c deleted file mode 100644 index d6df587464..0000000000 --- a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c +++ /dev/null @@ -1,499 +0,0 @@ -/* ---------------------------------------------------------------------------- */ -/* Atmel Microcontroller Software Support */ -/* SAM Software Package License */ -/* ---------------------------------------------------------------------------- */ -/* Copyright (c) 2015, Atmel Corporation */ -/* */ -/* All rights reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or without */ -/* modification, are permitted provided that the following condition is met: */ -/* */ -/* - Redistributions of source code must retain the above copyright notice, */ -/* this list of conditions and the disclaimer below. */ -/* */ -/* Atmel's name may not be used to endorse or promote products derived from */ -/* this software without specific prior written permission. */ -/* */ -/* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ -/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ -/* DISCLAIMED. IN NO EVENT SHALL ATMEL 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. */ -/* ---------------------------------------------------------------------------- */ - -/** \file */ - -/*---------------------------------------------------------------------------- - * Headers - *----------------------------------------------------------------------------*/ -#include "chip.h" - -/*---------------------------------------------------------------------------- - * Local functions - *----------------------------------------------------------------------------*/ - -/** - * \brief Configures one or more pin(s) of a PIO controller as being controlled by - * peripheral A. Optionally, the corresponding internal pull-up(s) can be enabled. - * - * \param pio Pointer to a PIO controller. - * \param mask Bitmask of one or more pin(s) to configure. - * \param enablePullUp Indicates if the pin(s) internal pull-up shall be - * configured. - */ -static void PIO_SetPeripheralA( - Pio *pio, - unsigned int mask, - unsigned char enablePullUp) -{ - unsigned int abcdsr; - /* Disable interrupts on the pin(s) */ - pio->PIO_IDR = mask; - - /* Enable the pull-up(s) if necessary */ - if (enablePullUp) - pio->PIO_PUER = mask; - else - pio->PIO_PUDR = mask; - - abcdsr = pio->PIO_ABCDSR[0]; - pio->PIO_ABCDSR[0] &= (~mask & abcdsr); - abcdsr = pio->PIO_ABCDSR[1]; - pio->PIO_ABCDSR[1] &= (~mask & abcdsr); - pio->PIO_PDR = mask; -} - -/** - * \brief Configures one or more pin(s) of a PIO controller as being controlled - * by peripheral B. Optionally, the corresponding internal pull-up(s) can be - * enabled. - * - * \param pio Pointer to a PIO controller. - * \param mask Bitmask of one or more pin(s) to configure. - * \param enablePullUp Indicates if the pin(s) internal pull-up shall be - * configured. - */ -static void PIO_SetPeripheralB( - Pio *pio, - unsigned int mask, - unsigned char enablePullUp) -{ - unsigned int abcdsr; - /* Disable interrupts on the pin(s) */ - pio->PIO_IDR = mask; - - /* Enable the pull-up(s) if necessary */ - if (enablePullUp) - pio->PIO_PUER = mask; - else - pio->PIO_PUDR = mask; - - abcdsr = pio->PIO_ABCDSR[0]; - pio->PIO_ABCDSR[0] = (mask | abcdsr); - abcdsr = pio->PIO_ABCDSR[1]; - pio->PIO_ABCDSR[1] &= (~mask & abcdsr); - - pio->PIO_PDR = mask; -} - -/** - * \brief Configures one or more pin(s) of a PIO controller as being controlled - * by peripheral C. Optionally, the corresponding internal pull-up(s) can be - * enabled. - * - * \param pio Pointer to a PIO controller. - * \param mask Bitmask of one or more pin(s) to configure. - * \param enablePullUp Indicates if the pin(s) internal pull-up shall be - * configured. - */ -static void PIO_SetPeripheralC( - Pio *pio, - unsigned int mask, - unsigned char enablePullUp) -{ - unsigned int abcdsr; - /* Disable interrupts on the pin(s) */ - pio->PIO_IDR = mask; - - /* Enable the pull-up(s) if necessary */ - if (enablePullUp) - pio->PIO_PUER = mask; - else - pio->PIO_PUDR = mask; - - abcdsr = pio->PIO_ABCDSR[0]; - pio->PIO_ABCDSR[0] &= (~mask & abcdsr); - abcdsr = pio->PIO_ABCDSR[1]; - pio->PIO_ABCDSR[1] = (mask | abcdsr); - - pio->PIO_PDR = mask; -} - -/** - * \brief Configures one or more pin(s) of a PIO controller as being controlled - * by peripheral D. Optionally, the corresponding internal pull-up(s) can be - * enabled. - * - * \param pio Pointer to a PIO controller. - * \param mask Bitmask of one or more pin(s) to configure. - * \param enablePullUp Indicates if the pin(s) internal pull-up shall be - * configured. - */ -static void PIO_SetPeripheralD( - Pio *pio, - unsigned int mask, - unsigned char enablePullUp) -{ - unsigned int abcdsr; - /* Disable interrupts on the pin(s) */ - pio->PIO_IDR = mask; - - /* Enable the pull-up(s) if necessary */ - if (enablePullUp) - pio->PIO_PUER = mask; - else - pio->PIO_PUDR = mask; - - abcdsr = pio->PIO_ABCDSR[0]; - pio->PIO_ABCDSR[0] = (mask | abcdsr); - abcdsr = pio->PIO_ABCDSR[1]; - pio->PIO_ABCDSR[1] = (mask | abcdsr); - - pio->PIO_PDR = mask; -} - -/** - * \brief Configures one or more pin(s) or a PIO controller as inputs. Optionally, - * the corresponding internal pull-up(s) and glitch filter(s) can be enabled. - * - * \param pio Pointer to a PIO controller. - * \param mask Bitmask indicating which pin(s) to configure as input(s). - * \param enablePullUp Indicates if the internal pull-up(s) must be enabled. - * \param enableFilter Indicates if the glitch filter(s) must be enabled. - */ -static void PIO_SetInput( - Pio *pio, - unsigned int mask, - unsigned char attribute) -{ - /* Disable interrupts */ - pio->PIO_IDR = mask; - - /* Enable pull-up(s) if necessary */ - if (attribute & PIO_PULLUP) - pio->PIO_PUER = mask; - else - pio->PIO_PUDR = mask; - - /* Enable Input Filter if necessary */ - if (attribute & (PIO_DEGLITCH | PIO_DEBOUNCE)) - pio->PIO_IFER = mask; - else - pio->PIO_IFDR = mask; - - /* Enable de-glitch or de-bounce if necessary */ - if (attribute & PIO_DEGLITCH) - pio->PIO_IFSCDR = mask; - else { - if (attribute & PIO_DEBOUNCE) - pio->PIO_IFSCER = mask; - } - - /* Configure additional interrupt mode registers */ - if (attribute & PIO_IT_AIME) { - // enable additional interrupt mode - pio->PIO_AIMER = mask; - - // if bit field of selected pin is 1, set as Rising Edge/High level detection event - if (attribute & PIO_IT_RE_OR_HL) - pio->PIO_REHLSR = mask; - else - pio->PIO_FELLSR = mask; - - /* if bit field of selected pin is 1, set as edge detection source */ - if (attribute & PIO_IT_EDGE) - pio->PIO_ESR = mask; - else - pio->PIO_LSR = mask; - } else { - /* disable additional interrupt mode */ - pio->PIO_AIMDR = mask; - } - - /* Configure pin as input */ - pio->PIO_ODR = mask; - pio->PIO_PER = mask; -} - -/** - * \brief Configures one or more pin(s) of a PIO controller as outputs, with the - * given default value. Optionally, the multi-drive feature can be enabled - * on the pin(s). - * - * \param pio Pointer to a PIO controller. - * \param mask Bitmask indicating which pin(s) to configure. - * \param defaultValue Default level on the pin(s). - * \param enableMultiDrive Indicates if the pin(s) shall be configured as - * open-drain. - * \param enablePullUp Indicates if the pin shall have its pull-up activated. - */ -static void PIO_SetOutput( - Pio *pio, - unsigned int mask, - unsigned char defaultValue, - unsigned char enableMultiDrive, - unsigned char enablePullUp) -{ - /* Disable interrupts */ - pio->PIO_IDR = mask; - - /* Enable pull-up(s) if necessary */ - if (enablePullUp) - pio->PIO_PUER = mask; - else - pio->PIO_PUDR = mask; - - /* Enable multi-drive if necessary */ - if (enableMultiDrive) - pio->PIO_MDER = mask; - else - pio->PIO_MDDR = mask; - - /* Set default value */ - if (defaultValue) - pio->PIO_SODR = mask; - else - pio->PIO_CODR = mask; - - /* Configure pin(s) as output(s) */ - pio->PIO_OER = mask; - pio->PIO_PER = mask; -} - -/*---------------------------------------------------------------------------- - * Global functions - *----------------------------------------------------------------------------*/ - -/** - * \brief Configures a list of Pin instances, each of which can either hold a - * single pin or a group of pins, depending on the mask value; all pins are - * configured by this function. The size of the array must also be provided and - * is easily computed using PIO_LISTSIZE whenever its length is not known in - * advance. - * - * \param list Pointer to a list of Pin instances. - * \param size Size of the Pin list (calculated using PIO_LISTSIZE). - * - * \return 1 if the pins have been configured properly; otherwise 0. - */ -uint8_t PIO_Configure(const Pin *list, uint32_t size) -{ - /* Configure pins */ - while (size > 0) { - switch (list->type) { - case PIO_PERIPH_A: - PIO_SetPeripheralA(list->pio, - list->mask, - (list->attribute & PIO_PULLUP) ? 1 : 0); - break; - - case PIO_PERIPH_B: - PIO_SetPeripheralB(list->pio, - list->mask, - (list->attribute & PIO_PULLUP) ? 1 : 0); - break; - - case PIO_PERIPH_C: - PIO_SetPeripheralC(list->pio, - list->mask, - (list->attribute & PIO_PULLUP) ? 1 : 0); - break; - - case PIO_PERIPH_D: - PIO_SetPeripheralD(list->pio, - list->mask, - (list->attribute & PIO_PULLUP) ? 1 : 0); - break; - - case PIO_INPUT: -#ifndef __FPGA - PMC_EnablePeripheral(list->id); -#endif - PIO_SetInput(list->pio, - list->mask, - list->attribute); - break; - - case PIO_OUTPUT_0: - case PIO_OUTPUT_1: - PIO_SetOutput(list->pio, - list->mask, - (list->type == PIO_OUTPUT_1), - (list->attribute & PIO_OPENDRAIN) ? 1 : 0, - (list->attribute & PIO_PULLUP) ? 1 : 0); - break; - - default: return 0; - } - - list++; - size--; - } - - return 1; -} - -/** - * \brief Sets a high output level on all the PIOs defined in the given Pin - * instance. - * This has no immediate effects on PIOs that are not output, but the PIO - * controller will memorize the value they are changed to outputs. - * - * \param pin Pointer to a Pin instance describing one or more pins. - */ -void PIO_Set(const Pin *pin) -{ - pin->pio->PIO_SODR = pin->mask; -} - -/** - * \brief Sets a low output level on all the PIOs defined in the given Pin - * instance. - * This has no immediate effects on PIOs that are not output, but the PIO - * controller will memorize the value they are changed to outputs. - * - * \param pin Pointer to a Pin instance describing one or more pins. - */ -void PIO_Clear(const Pin *pin) -{ - pin->pio->PIO_CODR = pin->mask; -} - -/** - * \brief Returns 1 if one or more PIO of the given Pin instance currently have - * a high level; otherwise returns 0. This method returns the actual value that - * is being read on the pin. To return the supposed output value of a pin, use - * PIO_GetOutputDataStatus() instead. - * - * \param pin Pointer to a Pin instance describing one or more pins. - * - * \return 1 if the Pin instance contains at least one PIO that currently has - * a high level; otherwise 0. - */ -unsigned char PIO_Get(const Pin *pin) -{ - unsigned int reg; - - if ((pin->type == PIO_OUTPUT_0) || (pin->type == PIO_OUTPUT_1)) - reg = pin->pio->PIO_ODSR; - else - reg = pin->pio->PIO_PDSR; - - if ((reg & pin->mask) == 0) - return 0; - else - return 1; -} - -/** - * \brief Returns 1 if one or more PIO of the given Pin are configured to output - * a high level (even if they are not output). - * To get the actual value of the pin, use PIO_Get() instead. - * - * \param pin Pointer to a Pin instance describing one or more pins. - * - * \return 1 if the Pin instance contains at least one PIO that is configured - * to output a high level; otherwise 0. - */ -unsigned char PIO_GetOutputDataStatus(const Pin *pin) -{ - if ((pin->pio->PIO_ODSR & pin->mask) == 0) - return 0; - else - return 1; -} - -/** - * \brief Configures Glitch or Denouncing filter for input. - * - * \param pin Pointer to a Pin instance describing one or more pins. - * \param cuttoff Cut off frequency for denounce filter. - */ -void PIO_SetDebounceFilter(const Pin *pin, uint32_t cuttoff) -{ - Pio *pio = pin->pio; - - pio->PIO_IFSCER = pin->mask; /* set Denouncing, 0 bit field no effect */ - pio->PIO_SCDR = ((32678 / (2 * (cuttoff))) - 1) & 0x3FFF; - /* the lowest 14 bits work */ -} - -/** - * \brief Enable write protect. - * - * \param pin Pointer to a Pin instance describing one or more pins. - */ -void PIO_EnableWriteProtect(const Pin *pin) -{ - Pio *pio = pin->pio; - - pio->PIO_WPMR = (PIO_WPMR_WPKEY_VALID | PIO_WPMR_WPEN_EN); -} - -/** - * \brief Disable write protect. - * - * \param pin Pointer to a Pin instance describing one or more pins. - */ - -void PIO_DisableWriteProtect(const Pin *pin) -{ - Pio *pio = pin->pio; - - pio->PIO_WPMR = (PIO_WPMR_WPKEY_VALID | PIO_WPMR_WPEN_DIS); -} - -/** - * \brief Get write protect violation information. - * - * \param pin Pointer to a Pin instance describing one or more pins. - */ -uint32_t PIO_GetWriteProtectViolationInfo(const Pin *pin) -{ - Pio *pio = pin->pio; - return (pio->PIO_WPSR); -} - -/** - * \brief Set pin type - * the pin is controlled by the corresponding peripheral (A, B, C, D,E) - * \param pin Pointer to a Pin instance describing one or more pins. - * \param pinType PIO_PERIPH_A, PIO_PERIPH_B, ... - */ -void PIO_SetPinType(Pin *pin, uint8_t pinType) -{ - pin->type = pinType; -} - -/** - * \brief Set the drive strength of the pin. - * - * \param pin Pointer to a Pin instance describing one or more pins. - * \param strength 0 for low drive strength or 1 for high drive strength. - */ -void PIO_SetDriveStrength(const Pin *pin, uint8_t strength) -{ - Pio *pio = pin->pio; - - if (strength) { - pio->PIO_DRIVER |= pin->mask; - } else { - pio->PIO_DRIVER &= ~(pin->mask); - } -} |