2686beab36
Connects up read, write and ctrl_transfer to TinyUSB. USB Host support is available on iMX RT and RP2040. Fixes #6527 (imx) and fixes #5986 (rp2).
106 lines
3.9 KiB
C
106 lines
3.9 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 "common-hal/microcontroller/Pin.h"
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#include "src/rp2_common/hardware_pio/include/hardware/pio.h"
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typedef struct sm_buf_info {
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mp_obj_t obj;
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mp_buffer_info_t info;
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} sm_buf_info;
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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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const uint16_t *init;
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size_t init_len;
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uint32_t initial_pin_state;
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uint32_t initial_pin_direction;
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uint32_t pull_pin_up;
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uint32_t pull_pin_down;
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uint tx_dreq;
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uint rx_dreq;
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uint32_t actual_frequency;
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pio_sm_config sm_config;
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bool in;
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bool out;
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bool wait_for_txstall;
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bool out_shift_right;
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bool in_shift_right;
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bool user_interruptible;
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uint8_t offset;
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// dma-related items
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volatile int pending_buffers;
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sm_buf_info current, once, loop;
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int background_stride_in_bytes;
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bool dma_completed, byteswap;
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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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uint32_t pull_pin_up, uint32_t pull_pin_down,
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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 initial_pin_state, uint32_t initial_pin_direction,
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const mcu_pin_obj_t *jmp_pin,
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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 wait_for_txstall,
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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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bool interruptible,
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bool sideset_enable,
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int wrap_target, int wrap);
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uint8_t rp2pio_statemachine_program_offset(rp2pio_statemachine_obj_t *self);
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void rp2pio_statemachine_deinit(rp2pio_statemachine_obj_t *self, bool leave_pins);
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void rp2pio_statemachine_dma_complete(rp2pio_statemachine_obj_t *self, int channel);
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void rp2pio_statemachine_reset_ok(PIO pio, int sm);
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void rp2pio_statemachine_never_reset(PIO pio, int sm);
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uint8_t rp2pio_statemachine_find_pio(int program_size, int sm_count);
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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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