9b4477e1dc
1. UART: ported to ASF4. Allow rx-only and tx-only. Add .baudrate r/w property. 2. Make NeoPixel timing deterministic by turning off caches during NeoPixel writes. 3. Incorporate asf4 updates: a. async USART driver b. bringing Atmel START configuration closer to what we use c. Clock initialization order now specified by CIRCUITPY_GCLK_INIT_1ST and _LAST. 4. supervisor/port.c: Move commented-out clock-test pin setting to correct location.
54 lines
1.9 KiB
C
54 lines
1.9 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) 2016 Scott Shawcroft
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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_ATMEL_SAMD_COMMON_HAL_BUSIO_UART_H
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#define MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_BUSIO_UART_H
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#include "common-hal/microcontroller/Pin.h"
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#include "hal/include/hal_usart_async.h"
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#include "py/obj.h"
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typedef struct {
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mp_obj_base_t base;
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struct usart_async_descriptor usart_desc;
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uint8_t rx_pin;
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uint8_t tx_pin;
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uint8_t character_bits;
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bool rx_error;
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uint32_t baudrate;
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uint32_t timeout_ms;
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// Index of the oldest received character.
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uint32_t buffer_start;
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// Index of the next available spot to store a character.
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uint32_t buffer_size;
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uint32_t buffer_length;
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uint8_t* buffer;
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} busio_uart_obj_t;
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#endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_BUSIO_UART_H
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