ws2812_avr.h

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/*
 * Copyright (C) 2021  Patrick Pedersen
 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 * 
 */
 
#pragma once
 
#include <stdint.h>
 
#include "ws2812_common.h"
#include "ws2812.h"
 
// General description necessary for Doxygen
 
/*
 * AVR: Data structure to configure a @ref ws2812 "WS2812 device struct" on AVR platforms.
 * 
 * The following struct is used to initialize/configure a @ref ws2812 "WS2812 device struct"
 * on AVR based devices. It is passed to the ws2812_config() function along
 * with a reference to a @ref ws2812 "WS2812 device struct", and contains relevant
 * information such as pins used to drive WS2812 devices, the device's reset time etc., 
 * necessary for configuring the @ref ws2812 "WS2812 device struct" to drive one or multiple 
 * WS2812 devices on AVR based devices. The data structure varies for the Arduino AVR 
 * target and the barebone AVR target.
 * 
 * WARNING: All fields of the configuration object must be defined before passing it to #ws2812_config()!
 *      Leaving a field undefined will result in undefined behaivor!
 */
typedef struct ws2812_cfg {
 
#ifdef WS2812_TARGET_PLATFORM_AVR
        volatile uint8_t *port;   
        volatile uint8_t *ddr;    
        uint8_t *pins;            
#endif
 
#ifdef WS2812_TARGET_PLATFORM_ARDUINO_AVR
        uint8_t *pins;             
#endif
 
        uint8_t rst_time_us;      
        ws2812_order order;       
        uint8_t n_dev;            
        
} ws2812_cfg;
 
// General description necessary for Doxygen
 
/*
 * STM8S: WS2812 device struct to drive one or more WS2812 devices on AVR based platforms.
 * 
 * The following struct is used to drive one or more WS2812 devices on AVR based devices.
 * It is initialized by the ws2812_config() function and is taken as an argument by practically
 * every function of the TinyWS2812 library relevant to driving WS2812 devices (ex. ws2812_tx(),
 * ws2812_prep_tx(), etc...).
 * 
 * See ws2812_config()
 * 
 */
typedef struct ws2812 {
        volatile uint8_t *port; 
        uint8_t rst_time_us;    
        uint8_t maskhi;         
        uint8_t masklo;         
        uint8_t rgbmap[3];      
} ws2812;