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72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*
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* This file is part of Cleanflight.
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*
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* Cleanflight is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Cleanflight is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Cleanflight. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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// Since serial ports can be used for any function these buffer sizes should be equal
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// The two largest things that need to be sent are: 1, MSP responses, 2, UBLOX SVINFO packet.
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// Size must be a power of two due to various optimizations which use 'and' instead of 'mod'
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// Various serial routines return the buffer occupied size as uint8_t which would need to be extended in order to
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// increase size further.
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#define UART1_RX_BUFFER_SIZE 256
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#define UART1_TX_BUFFER_SIZE 256
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#define UART2_RX_BUFFER_SIZE 256
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#define UART2_TX_BUFFER_SIZE 256
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#define UART3_RX_BUFFER_SIZE 256
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#define UART3_TX_BUFFER_SIZE 256
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#define UART4_RX_BUFFER_SIZE 256
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#define UART4_TX_BUFFER_SIZE 256
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#define UART5_RX_BUFFER_SIZE 256
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#define UART5_TX_BUFFER_SIZE 256
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#define UART6_RX_BUFFER_SIZE 256
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#define UART6_TX_BUFFER_SIZE 256
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typedef struct {
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serialPort_t port;
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#ifdef STM32F4
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DMA_Stream_TypeDef *rxDMAStream;
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DMA_Stream_TypeDef *txDMAStream;
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uint32_t rxDMAChannel;
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uint32_t txDMAChannel;
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#else
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DMA_Channel_TypeDef *rxDMAChannel;
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DMA_Channel_TypeDef *txDMAChannel;
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#endif
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uint32_t rxDMAIrq;
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uint32_t txDMAIrq;
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uint32_t rxDMAPos;
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bool txDMAEmpty;
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uint32_t txDMAPeripheralBaseAddr;
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uint32_t rxDMAPeripheralBaseAddr;
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USART_TypeDef *USARTx;
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} uartPort_t;
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serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr rxCallback, uint32_t baudRate, portMode_t mode, portOptions_t options);
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// serialPort API
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void uartWrite(serialPort_t *instance, uint8_t ch);
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uint32_t uartTotalRxBytesWaiting(const serialPort_t *instance);
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uint32_t uartTotalTxBytesFree(const serialPort_t *instance);
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uint8_t uartRead(serialPort_t *instance);
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void uartSetBaudRate(serialPort_t *s, uint32_t baudRate);
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bool isUartTransmitBufferEmpty(const serialPort_t *s);
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