circuitpython/ports/samd/pin_af.h

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2022 Robert Hammelrath
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file initialises provides and checks pin capabilities as required
* for USART, I2C, SPI, PWM, ADC
*
*/
#if defined(MCU_SAMD21)
typedef struct {
uint8_t pin_id;
uint8_t eic;
uint8_t adc0;
uint8_t sercom1;
uint8_t sercom2;
uint8_t tcc1;
uint8_t tcc2;
} pin_af_t;
#define ALT_FCT_TC 4
#define ALT_FCT_TCC1 4
#define ALT_FCT_TCC2 5
#elif defined(MCU_SAMD51)
typedef struct {
uint8_t pin_id;
uint8_t eic;
uint8_t adc0;
uint8_t adc1;
uint8_t sercom1;
uint8_t sercom2;
uint8_t tc;
uint8_t tcc1;
uint8_t tcc2;
} pin_af_t;
#define ALT_FCT_TC 4
#define ALT_FCT_TCC1 5
#define ALT_FCT_TCC2 6
#endif
typedef struct _sercom_pad_config_t {
uint8_t alt_fct;
uint8_t pad_nr;
} sercom_pad_config_t;
typedef struct _adc_config_t {
uint8_t device;
uint8_t channel;
} adc_config_t;
typedef struct _pwm_config_t {
uint8_t alt_fct;
uint8_t device_channel;
} pwm_config_t;
#define ALT_FCT_EIC 0
#define ALT_FCT_ADC 1
#define ALT_FCT_DAC 1
#define ALT_FCT_SERCOM1 2
#define ALT_FCT_SERCOM2 3
sercom_pad_config_t get_sercom_config(int pin_id, uint8_t sercom);
adc_config_t get_adc_config(int pin_id, int32_t flag);
pwm_config_t get_pwm_config(int pin_id, int wanted_dev, uint8_t used_dev[]);
const pin_af_t *get_pin_af_info(int pin_id);