175 lines
4.0 KiB
C
175 lines
4.0 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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// Configuration constants
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#if defined(STM32F1)
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#define UARTDEV_COUNT_MAX 3
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#define UARTHARDWARE_PINPAIR_COUNT 3
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#ifndef UART_RX_BUFFER_SIZE
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#define UART_RX_BUFFER_SIZE 256
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#endif
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#ifndef UART_TX_BUFFER_SIZE
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#define UART_TX_BUFFER_SIZE 256
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#endif
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#elif defined(STM32F3)
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#define UARTDEV_COUNT_MAX 5
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#define UARTHARDWARE_PINPAIR_COUNT 4
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#ifndef UART_RX_BUFFER_SIZE
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#define UART_RX_BUFFER_SIZE 256
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#endif
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#ifndef UART_TX_BUFFER_SIZE
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#define UART_TX_BUFFER_SIZE 256
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#endif
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#elif defined(STM32F4)
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#define UARTDEV_COUNT_MAX 6
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#define UARTHARDWARE_PINPAIR_COUNT 4
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#ifndef UART_RX_BUFFER_SIZE
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#define UART_RX_BUFFER_SIZE 512
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#endif
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#ifndef UART_TX_BUFFER_SIZE
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#define UART_TX_BUFFER_SIZE 512
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#endif
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#elif defined(STM32F7)
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#define UARTDEV_COUNT_MAX 8
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#define UARTHARDWARE_PINPAIR_COUNT 3
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#ifndef UART_RX_BUFFER_SIZE
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#define UART_RX_BUFFER_SIZE 512
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#endif
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#ifndef UART_TX_BUFFER_SIZE
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#define UART_TX_BUFFER_SIZE 512
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#endif
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#else
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#error unknown MCU family
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#endif
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// Count number of configured UARTs
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#ifdef USE_UART1
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#define UARTDEV_COUNT_1 1
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#else
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#define UARTDEV_COUNT_1 0
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#endif
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#ifdef USE_UART2
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#define UARTDEV_COUNT_2 1
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#else
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#define UARTDEV_COUNT_2 0
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#endif
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#ifdef USE_UART3
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#define UARTDEV_COUNT_3 1
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#else
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#define UARTDEV_COUNT_3 0
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#endif
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#ifdef USE_UART4
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#define UARTDEV_COUNT_4 1
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#else
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#define UARTDEV_COUNT_4 0
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#endif
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#ifdef USE_UART5
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#define UARTDEV_COUNT_5 1
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#else
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#define UARTDEV_COUNT_5 0
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#endif
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#ifdef USE_UART6
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#define UARTDEV_COUNT_6 1
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#else
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#define UARTDEV_COUNT_6 0
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#endif
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#ifdef USE_UART7
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#define UARTDEV_COUNT_7 1
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#else
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#define UARTDEV_COUNT_7 0
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#endif
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#ifdef USE_UART8
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#define UARTDEV_COUNT_8 1
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#else
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#define UARTDEV_COUNT_8 0
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#endif
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#define UARTDEV_COUNT (UARTDEV_COUNT_1 + UARTDEV_COUNT_2 + UARTDEV_COUNT_3 + UARTDEV_COUNT_4 + UARTDEV_COUNT_5 + UARTDEV_COUNT_6 + UARTDEV_COUNT_7 + UARTDEV_COUNT_8)
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typedef struct uartPinPair_s {
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ioTag_t rx;
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ioTag_t tx;
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} uartPinPair_t;
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typedef struct uartHardware_s {
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UARTDevice device; // XXX Not required for full allocation
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USART_TypeDef* reg;
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#if defined(STM32F1) || defined(STM32F3)
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DMA_Channel_TypeDef *txDMAChannel;
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DMA_Channel_TypeDef *rxDMAChannel;
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#elif defined(STM32F4) || defined(STM32F7)
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uint32_t DMAChannel;
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DMA_Stream_TypeDef *txDMAStream;
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DMA_Stream_TypeDef *rxDMAStream;
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#endif
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uartPinPair_t pinPair[UARTHARDWARE_PINPAIR_COUNT];
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#if defined(STM32F7)
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uint32_t rcc_ahb1;
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rccPeriphTag_t rcc_apb2;
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rccPeriphTag_t rcc_apb1;
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#else
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rccPeriphTag_t rcc;
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#endif
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uint8_t af;
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#if defined(STM32F7)
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uint8_t txIrq;
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uint8_t rxIrq;
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#else
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uint8_t irqn;
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#endif
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uint8_t txPriority;
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uint8_t rxPriority;
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} uartHardware_t;
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extern const uartHardware_t uartHardware[];
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// uartDevice_t is an actual device instance.
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// XXX Instances are allocated for uarts defined by USE_UARTx atm.
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typedef struct uartDevice_s {
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uartPort_t port;
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const uartHardware_t *hardware;
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ioTag_t rx;
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ioTag_t tx;
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volatile uint8_t rxBuffer[UART_RX_BUFFER_SIZE];
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volatile uint8_t txBuffer[UART_TX_BUFFER_SIZE];
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} uartDevice_t;
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extern uartDevice_t uartDevice[];
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extern uartDevice_t *uartDevmap[];
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extern const struct serialPortVTable uartVTable[];
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void uartStartTxDMA(uartPort_t *s);
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uartPort_t *serialUART(UARTDevice device, uint32_t baudRate, portMode_t mode, portOptions_t options);
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void uartIrqHandler(uartPort_t *s);
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void uartReconfigure(uartPort_t *uartPort);
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