104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
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* File: rgbled.h
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* Description: RGB LED library
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* Author: Jan Mrna
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* Date: 2021-10-11
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*
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*
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* Copyright (c) 2024 Veles Labs s.r.o.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#ifndef INC_RGBLED_H_
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#define INC_RGBLED_H_
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#include "stm32l0xx_ll_tim.h"
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#include "stddef.h"
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/*
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* Return values for I2C functions
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*/
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#define RGBLED_OK 0
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#define RGBLED_ERROR -1 // generic error
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#define RGBLED_WRONG_CHANNEL -2 // channel number not in {1,2,3,4}
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/*
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* Defaults used for LL timer (PWM) initialization
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*/
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#define RGBLED_PRESCALER 0
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#define RGBLED_PERIOD 255
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#define RGBLED_MAX_INTENSITY 100
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/*
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* Shorthands for colors
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*/
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#define RGBLED_RED 255,0,0
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#define RGBLED_GREEN 0,255,0
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#define RGBLED_BLUE 0,0,255
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#define RGBLED_WHITE 255,255,255
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#define RGBLED_YELLOW 255,255,0
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#define RGBLED_OFF 0,0,0
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#define RGBLED_MAGENTA 255,0,255
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/*
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* Type definitions
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*/
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typedef struct {
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// tim2 ch1 B
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// tim22 ch1 G
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// tim22 ch2 R
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// TODO union, aby se dalo nastavovat LED v cyklu (set_color)
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union {
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struct {
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TIM_TypeDef *R;
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TIM_TypeDef *G;
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TIM_TypeDef *B;
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} timer;
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TIM_TypeDef *timer_array[3];
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};
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union {
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struct {
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uint8_t R;
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uint8_t G;
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uint8_t B;
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} channel;
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uint8_t channel_array[3];
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};
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} rgbled_context_t;
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/*
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* Function declarations
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*/
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int8_t rgbled_init(rgbled_context_t *context);
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int8_t rgbled_set_color(uint8_t R, uint8_t G, uint8_t B);
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int8_t rgbled_set_intensity(uint8_t intensity);
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int8_t rgbled_get_intensity(uint8_t *intensity);
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int8_t rgbled_off(void);
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#endif /* INC_RGBLED_H_ */
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