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51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "drivers/uart.h"
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#include "board/board.h"
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#include <stdbool.h>
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#include <stdint.h>
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typedef struct UARTState {
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bool initialized;
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UARTRXInterruptHandler rx_irq_handler;
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UARTTXInterruptHandler tx_irq_handler;
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bool rx_int_enabled;
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bool tx_int_enabled;
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uint8_t *rx_dma_buffer;
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uint32_t rx_dma_length;
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uint32_t rx_dma_index;
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} UARTDeviceState;
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typedef const struct UARTDevice {
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UARTDeviceState *state;
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bool half_duplex;
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AfConfig tx_gpio;
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AfConfig rx_gpio;
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USART_TypeDef *periph;
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uint32_t rcc_apb_periph;
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uint8_t irq_channel;
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uint8_t irq_priority;
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DMARequest *rx_dma;
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} UARTDevice;
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// thinly wrapped by the IRQ handler in board_*.c
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void uart_irq_handler(UARTDevice *dev);
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