733094aead
The RP2040 is new microcontroller from Raspberry Pi that features two Cortex M0s and eight PIO state machines that are good for crunching lots of data. It has 264k RAM and a built in UF2 bootloader too. Datasheet: https://pico.raspberrypi.org/files/rp2040_datasheet.pdf
69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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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
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* all 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
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_RP2PIO_STATEMACHINE_H
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#define MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_RP2PIO_STATEMACHINE_H
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#include "py/obj.h"
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#include "src/rp2_common/hardware_pio/include/hardware/pio.h"
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typedef struct {
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mp_obj_base_t base;
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uint32_t pins; // Bitmask of what pins this state machine uses.
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int state_machine;
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PIO pio;
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bool in;
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bool out;
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uint tx_dreq;
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uint rx_dreq;
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bool out_shift_right;
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bool in_shift_right;
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uint32_t actual_frequency;
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} rp2pio_statemachine_obj_t;
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void reset_rp2pio_statemachine(void);
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// Minimal internal version that only fails on pin error (not in use) or full PIO.
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bool rp2pio_statemachine_construct(rp2pio_statemachine_obj_t *self,
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const uint16_t* program, size_t program_len,
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size_t frequency,
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const uint16_t* init, size_t init_len,
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const mcu_pin_obj_t * first_out_pin, uint8_t out_pin_count,
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const mcu_pin_obj_t * first_in_pin, uint8_t in_pin_count,
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const mcu_pin_obj_t * first_set_pin, uint8_t set_pin_count,
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const mcu_pin_obj_t * first_sideset_pin, uint8_t sideset_pin_count,
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uint32_t pins_we_use, bool tx_fifo, bool rx_fifo,
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bool auto_pull, uint8_t pull_threshold, bool out_shift_right,
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bool auto_push, uint8_t push_threshold, bool in_shift_right,
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bool claim_pins);
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void rp2pio_statemachine_deinit(rp2pio_statemachine_obj_t *self, bool leave_pins);
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extern const mp_obj_type_t rp2pio_statemachine_type;
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#endif // MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_RP2PIO_STATEMACHINE_H
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