1 /* 2 * Copyright (c) 2019 Derek Hageman <hageman@inthat.cloud> 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 8 #ifndef ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_SAM0_EIC_H_ 9 #define ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_SAM0_EIC_H_ 10 11 #include <zephyr/types.h> 12 13 /* callback for EIC interrupt */ 14 typedef void (*sam0_eic_callback_t)(uint32_t pins, void *data); 15 16 /** 17 * @brief EIC trigger condition 18 */ 19 enum sam0_eic_trigger { 20 /* Rising edge */ 21 SAM0_EIC_RISING, 22 /* Falling edge */ 23 SAM0_EIC_FALLING, 24 /* Both edges */ 25 SAM0_EIC_BOTH, 26 /* High level detection */ 27 SAM0_EIC_HIGH, 28 /* Low level detection */ 29 SAM0_EIC_LOW, 30 }; 31 32 /** 33 * @brief Acquire an EIC interrupt for specific port and pin combination 34 * 35 * This acquires the EIC interrupt for a specific port and pin combination, 36 * or returns an error if the required line is not available. Only a single 37 * callback per port is supported and supplying a different one will 38 * change it for all lines on that port. 39 * 40 * @param port port index (A=0, etc) 41 * @param pin pin in the port 42 * @param trigger trigger condition 43 * @param filter enable filter 44 * @param cb interrupt callback 45 * @param data parameter to the interrupt callback 46 */ 47 int sam0_eic_acquire(int port, int pin, enum sam0_eic_trigger trigger, 48 bool filter, sam0_eic_callback_t cb, void *data); 49 50 /** 51 * @brief Release the EIC interrupt for a specific port and pin combination 52 * 53 * Release the EIC configuration for a specific port and pin combination. 54 * No effect if that combination does not currently hold the associated 55 * EIC line. 56 * 57 * @param port port index (A=0, etc) 58 * @param pin pin in the port 59 */ 60 int sam0_eic_release(int port, int pin); 61 62 /** 63 * @brief Enable the EIC interrupt for a specific port and pin combination 64 * 65 * @param port port index (A=0, etc) 66 * @param pin pin in the port 67 */ 68 int sam0_eic_enable_interrupt(int port, int pin); 69 70 /** 71 * @brief Disable the EIC interrupt for a specific port and pin combination 72 * 73 * @param port port index (A=0, etc) 74 * @param pin pin in the port 75 */ 76 int sam0_eic_disable_interrupt(int port, int pin); 77 78 /** 79 * @brief Test if there is an EIC interrupt pending for a port 80 * 81 * @param port port index (A=0, etc) 82 */ 83 uint32_t sam0_eic_interrupt_pending(int port); 84 85 #endif /* ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_SAM0_EIC_H_ */ 86
