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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
*
* 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.
*/
#ifndef MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_RP2PIO_STATEMACHINE_H
#define MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_RP2PIO_STATEMACHINE_H
#include "py/obj.h"
#include "common-hal/microcontroller/Pin.h"
#include "src/rp2_common/hardware_pio/include/hardware/pio.h"
typedef struct {
mp_obj_base_t base;
uint32_t pins; // Bitmask of what pins this state machine uses.
int state_machine;
PIO pio;
const uint16_t *init;
size_t init_len;
uint32_t initial_pin_state;
uint32_t initial_pin_direction;
uint32_t pull_pin_up;
uint32_t pull_pin_down;
bool in;
bool out;
bool wait_for_txstall;
uint tx_dreq;
uint rx_dreq;
bool out_shift_right;
bool in_shift_right;
uint32_t actual_frequency;
pio_sm_config sm_config;
uint8_t offset;
} rp2pio_statemachine_obj_t;
void reset_rp2pio_statemachine(void);
// Minimal internal version that only fails on pin error (not in use) or full PIO.
bool rp2pio_statemachine_construct(rp2pio_statemachine_obj_t *self,
const uint16_t *program, size_t program_len,
size_t frequency,
const uint16_t *init, size_t init_len,
const mcu_pin_obj_t *first_out_pin, uint8_t out_pin_count,
const mcu_pin_obj_t *first_in_pin, uint8_t in_pin_count,
uint32_t pull_pin_up, uint32_t pull_pin_down,
const mcu_pin_obj_t *first_set_pin, uint8_t set_pin_count,
const mcu_pin_obj_t *first_sideset_pin, uint8_t sideset_pin_count,
uint32_t initial_pin_state, uint32_t initial_pin_direction,
uint32_t pins_we_use, bool tx_fifo, bool rx_fifo,
bool auto_pull, uint8_t pull_threshold, bool out_shift_right,
bool wait_for_txstall,
bool auto_push, uint8_t push_threshold, bool in_shift_right,
bool claim_pins);
void rp2pio_statemachine_deinit(rp2pio_statemachine_obj_t *self, bool leave_pins);
extern const mp_obj_type_t rp2pio_statemachine_type;
#endif // MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_RP2PIO_STATEMACHINE_H
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