diff options
Diffstat (limited to 'Smol Watch Project/My Project/hal/src/hal_ext_irq.c')
| -rw-r--r-- | Smol Watch Project/My Project/hal/src/hal_ext_irq.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/Smol Watch Project/My Project/hal/src/hal_ext_irq.c b/Smol Watch Project/My Project/hal/src/hal_ext_irq.c deleted file mode 100644 index d0b92927..00000000 --- a/Smol Watch Project/My Project/hal/src/hal_ext_irq.c +++ /dev/null @@ -1,188 +0,0 @@ -/** - * \file - * - * \brief External interrupt functionality imkplementation. - * - * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries. - * - * \asf_license_start - * - * \page License - * - * Subject to your compliance with these terms, you may use Microchip - * software and any derivatives exclusively with Microchip products. - * It is your responsibility to comply with third party license terms applicable - * to your use of third party software (including open source software) that - * may accompany Microchip software. - * - * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, - * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, - * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, - * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE - * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL - * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE - * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE - * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT - * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY - * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, - * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. - * - * \asf_license_stop - * - */ - -#include "hal_ext_irq.h" - -#define EXT_IRQ_AMOUNT 3 - -/** - * \brief Driver version - */ -#define DRIVER_VERSION 0x00000001u - -/** - * \brief External IRQ struct - */ -struct ext_irq { - ext_irq_cb_t cb; - uint32_t pin; -}; - -/* Remove KEIL compiling error in case no IRQ line selected */ -#if EXT_IRQ_AMOUNT == 0 -#undef EXT_IRQ_AMOUNT -#define EXT_IRQ_AMOUNT 1 -#endif - -/** - * \brief Array of external IRQs callbacks - */ -static struct ext_irq ext_irqs[EXT_IRQ_AMOUNT]; - -static void process_ext_irq(const uint32_t pin); - -/** - * \brief Initialize external irq component if any - */ -int32_t ext_irq_init(void) -{ - uint16_t i; - - for (i = 0; i < EXT_IRQ_AMOUNT; i++) { - ext_irqs[i].pin = 0xFFFFFFFF; - ext_irqs[i].cb = NULL; - } - - return _ext_irq_init(process_ext_irq); -} - -/** - * \brief Deinitialize external irq if any - */ -int32_t ext_irq_deinit(void) -{ - return _ext_irq_deinit(); -} - -/** - * \brief Register callback for the given external interrupt - */ -int32_t ext_irq_register(const uint32_t pin, ext_irq_cb_t cb) -{ - uint8_t i = 0, j = 0; - bool found = false; - - for (; i < EXT_IRQ_AMOUNT; i++) { - if (ext_irqs[i].pin == pin) { - ext_irqs[i].cb = cb; - found = true; - break; - } - } - - if (NULL == cb) { - if (!found) { - return ERR_INVALID_ARG; - } - return _ext_irq_enable(pin, false); - } - - if (!found) { - for (i = 0; i < EXT_IRQ_AMOUNT; i++) { - if (NULL == ext_irqs[i].cb) { - ext_irqs[i].cb = cb; - ext_irqs[i].pin = pin; - found = true; - break; - } - } - for (; (j < EXT_IRQ_AMOUNT) && (i < EXT_IRQ_AMOUNT); j++) { - if ((ext_irqs[i].pin < ext_irqs[j].pin) && (ext_irqs[j].pin != 0xFFFFFFFF)) { - struct ext_irq tmp = ext_irqs[j]; - - ext_irqs[j] = ext_irqs[i]; - ext_irqs[i] = tmp; - } - } - } - - if (!found) { - return ERR_INVALID_ARG; - } - - return _ext_irq_enable(pin, true); -} - -/** - * \brief Enable external irq - */ -int32_t ext_irq_enable(const uint32_t pin) -{ - return _ext_irq_enable(pin, true); -} - -/** - * \brief Disable external irq - */ -int32_t ext_irq_disable(const uint32_t pin) -{ - return _ext_irq_enable(pin, false); -} - -/** - * \brief Retrieve the current driver version - */ -uint32_t ext_irq_get_version(void) -{ - return DRIVER_VERSION; -} - -/** - * \brief Interrupt processing routine - * - * \param[in] pin The pin which triggered the interrupt - */ -static void process_ext_irq(const uint32_t pin) -{ - uint8_t lower = 0, middle, upper = EXT_IRQ_AMOUNT; - - while (upper >= lower) { - middle = (upper + lower) >> 1; - if (middle >= EXT_IRQ_AMOUNT) { - return; - } - - if (ext_irqs[middle].pin == pin) { - if (ext_irqs[middle].cb) { - ext_irqs[middle].cb(); - } - return; - } - - if (ext_irqs[middle].pin < pin) { - lower = middle + 1; - } else { - upper = middle - 1; - } - } -} |