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2 mjames 1 
/*
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 * serial.h
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 *
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 *  Created on: 4 Jan 2016
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 *      Author: Mike
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 */
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#ifndef INC_SERIAL_H_
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#define INC_SERIAL_H_
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#include "stm32f1xx_hal.h"
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#define TX_USART_BUFF_SIZ 1024
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#define RX_USART_BUFF_SIZ 1024
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typedef struct {
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        USART_TypeDef *Instance;
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        volatile uint8_t tx_usart_buff[TX_USART_BUFF_SIZ];
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        volatile unsigned int tx_usart_in_Ptr;
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        volatile unsigned int tx_usart_out_Ptr;
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        volatile uint8_t tx_usart_running;
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        volatile uint16_t tx_usart_count;
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        volatile uint8_t rx_usart_buff[RX_USART_BUFF_SIZ];
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        volatile unsigned int rx_usart_in_Ptr;
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        volatile unsigned int rx_usart_out_Ptr;
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        volatile uint8_t rx_usart_buffer_full;
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} usart_ctl;
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extern usart_ctl uc1;
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extern usart_ctl uc2;
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extern usart_ctl uc3;
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/* returns the number of characters received by the Rx USART */
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extern uint16_t SerialCharsReceived(usart_ctl * instance);
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extern inline uint8_t PollSerial(usart_ctl * instance);
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extern uint8_t GetCharSerial(usart_ctl * instance);
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extern inline void EnableSerialRxInterrupt(usart_ctl * instance);
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extern void UART_IRQHandler(usart_ctl * instance);
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extern void PutCharSerial(usart_ctl * instance,uint8_t c);
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extern void ResetTxBuffer(usart_ctl * instance);
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extern void ResetRxBuffer(usart_ctl * instance);
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extern void FlushSerial(usart_ctl * instance);
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extern uint8_t  TxBufferEmpty(usart_ctl * instance);
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extern void init_usart_ctl(usart_ctl * instance, USART_TypeDef * hardware);
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#endif /* INC_SERIAL_H_ */