88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*
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Copyright (c) 2017 Daniel Fekete
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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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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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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 THE
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SOFTWARE.
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*/
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#ifndef SERIAL_UART_H
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#define SERIAL_UART_H
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#include "stm32_def.h"
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#include "stm32_gpio.h"
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#include "Stream.h"
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#define BUFFER_SIZE 128
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class SerialUART : public Stream {
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public:
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SerialUART(USART_TypeDef *instance);
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void begin(const uint32_t baud);
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void end(void);
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int available(void);
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int peek(void);
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int read(void);
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void flush(void);
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size_t write(const uint8_t c);
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using Print::write; // pull in write(str) and write(buf, size) from Print
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operator bool() { return true; }; // UART always active
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void stm32SetRX(uint8_t rx);
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void stm32SetTX(uint8_t tx);
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USART_TypeDef *instance = NULL;
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UART_HandleTypeDef *handle = NULL;
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uint8_t receive_buffer = 0;
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uint8_t *txBuffer = NULL;
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volatile uint8_t txStart = 0;
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volatile uint8_t txEnd = 0;
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uint8_t *rxBuffer = NULL;
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volatile uint8_t rxStart = 0;
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volatile uint8_t rxEnd = 0;
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GPIO_TypeDef *rxPort = NULL;
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uint32_t rxPin = 0;
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GPIO_TypeDef *txPort = NULL;
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uint32_t txPin = 0;
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};
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#ifdef USART1
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extern SerialUART SerialUART1;
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#define Serial1 SerialUART1
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#endif
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#ifdef USART2
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extern SerialUART SerialUART2;
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#define Serial2 SerialUART2
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#endif
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#ifdef USART3
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extern SerialUART SerialUART3;
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#define Serial3 SerialUART3
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#endif
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#ifdef USART4
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extern SerialUART SerialUART4;
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#define Serial4 SerialUART4
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#endif
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#endif // _UART_CLASS_
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