timeout3.h

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/*
 * Copyright (c) 2024 ykat UG (haftungsbeschraenkt) - All Rights Reserved
 *
 * Permission for non-commercial use is hereby granted,
 * free of charge, without warranty of any kind.
 */
#ifndef ZRTOS_VFS_MODULE_AVR_TIMEOUT3_H
#define ZRTOS_VFS_MODULE_AVR_TIMEOUT3_H
#ifdef __cplusplus
extern "C" {
#endif

#include <avr/io.h>
#include <avr/interrupt.h>

#include <zrtos/vfs/module/timeout/timeout.h>

ZRTOS_ASSERT__STATIC(
    sizeof(zrtos_vfs_offset_t) >= sizeof(zrtos_vfs_module_timeout_microseconds_t)
);

zrtos_vfs_module_timeout_inode_t zrtos_vfs_module_avr_timeout3;

ISR(TIMER3_OVF_vect){
    zrtos_vfs_module_avr_timeout3.callback(
        zrtos_vfs_module_avr_timeout3.callback_data
    );
}

zrtos_error_t zrtos_vfs_module_avr_timeout3__on_open(
     zrtos_vfs_file_t *thiz
){
    return zrtos_vfs_file__get_dentry_count(thiz) == 1
         ? ZRTOS_ERROR__SUCCESS
         : ZRTOS_ERROR__MFILE
    ;
}

zrtos_error_t zrtos_vfs_module_avr_timeout3__on_mount(zrtos_vfs_dentry_t *thiz){
    TIMSK3 = 0;
    return ZRTOS_ERROR__SUCCESS;
}

zrtos_error_t zrtos_vfs_module_avr_timeout3__on_umount(zrtos_vfs_dentry_t *thiz){
    TIMSK3 = 0;
    //TIMSK3 &= ~_BV(TOIE3);
    return ZRTOS_ERROR__SUCCESS;
}

zrtos_error_t zrtos_vfs_module_avr_timeout3__on_ioctl(
     zrtos_vfs_file_t *thiz
    ,char *path
    ,int request
    ,va_list args
){
    zrtos_error_t ret = ZRTOS_ERROR__SUCCESS;

    switch(ZRTOS_CAST__REINTERPRET(
         zrtos_vfs_module_timeout_ioctl_t
        ,request
    )){
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__START:
            TCCR3A = 0;
            //TCCR3B = (inode_data->prescaler) & 0xff;
            TCCR3B = _BV(CS32) | _BV(CS31) | _BV(CS30);//prescaler 1024
            TIMSK3 = _BV(TOIE3);
            //TIMSK3 |= _BV(TOIE3);
            zrtos_vfs_file__set_offset(
                 thiz
                ,zrtos_vfs_module_timeout__get_overflow_counter_value(
                    zrtos_va__arg(
                        args
                        ,zrtos_vfs_module_timeout_microseconds_t
                    )
                    ,1024
                )
            );
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__RESET:
            TCNT3 = zrtos_vfs_file__get_offset(thiz);
        break;
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__STOP:
            TIMSK3 = 0;
            //TIMSK3 &= ~_BV(TOIE3);
        break;
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__SET_CALLBACK:
            zrtos_vfs_module_avr_timeout0.callback = zrtos_va__arg(
                 args
                ,zrtos_vfs_module_timeout_callback_t
            );
            zrtos_vfs_module_avr_timeout0.callback_data = zrtos_va__arg(
                 args
                ,void*
            );
        break;
        default:
            ret = ZRTOS_ERROR__INVAL;
        break;
    }

    return ret;
}

ZRTOS_VFS_PLUGIN__INIT(avr_timeout3,
    ZRTOS_VFS_PLUGIN__0_ON_OPEN(zrtos_vfs_module_avr_timeout3__on_open)
    ZRTOS_VFS_PLUGIN__1_ON_CLOSE_DEFAULT()
    ZRTOS_VFS_PLUGIN__2_ON_MOUNT(zrtos_vfs_module_avr_timeout3__on_mount)
    ZRTOS_VFS_PLUGIN__3_ON_UMOUNT(zrtos_vfs_module_avr_timeout3__on_umount)
    ZRTOS_VFS_PLUGIN__4_ON_READ_DEFAULT()
    ZRTOS_VFS_PLUGIN__5_ON_WRITE_DEFAULT()
    ZRTOS_VFS_PLUGIN__6_ON_CAN_READ_DEFAULT()
    ZRTOS_VFS_PLUGIN__7_ON_CAN_WRITE_DEFAULT()
    ZRTOS_VFS_PLUGIN__8_ON_SEEK_DEFAULT()
    ZRTOS_VFS_PLUGIN__9_ON_IOCTL(zrtos_vfs_module_avr_timeout3__on_ioctl)
);

#ifdef __cplusplus
}
#endif
#endif