fsfw-hal/linux/uart/UartComIF.h

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2021-05-25 17:21:16 +02:00
#ifndef BSP_Q7S_COMIF_UARTCOMIF_H_
#define BSP_Q7S_COMIF_UARTCOMIF_H_
#include <fsfw/objectmanager/SystemObject.h>
#include <fsfw/devicehandlers/DeviceCommunicationIF.h>
#include <unordered_map>
#include <vector>
#include "UartCookie.h"
/**
* @brief This is the communication interface to access serial ports on linux based operating
* systems.
*
* @details The implementation follows the instructions from https://blog.mbedded.ninja/programming/
* operating-systems/linux/linux-serial-ports-using-c-cpp/#disabling-canonical-mode
*
* @author J. Meier
*/
class UartComIF: public DeviceCommunicationIF, public SystemObject {
public:
UartComIF(object_id_t objectId);
virtual ~UartComIF();
ReturnValue_t initializeInterface(CookieIF * cookie) override;
ReturnValue_t sendMessage(CookieIF *cookie,const uint8_t *sendData,
size_t sendLen) override;
ReturnValue_t getSendSuccess(CookieIF *cookie) override;
ReturnValue_t requestReceiveMessage(CookieIF *cookie,
size_t requestLen) override;
ReturnValue_t readReceivedMessage(CookieIF *cookie, uint8_t **buffer,
size_t *size) override;
private:
using UartDeviceFile_t = std::string;
typedef struct UartElements {
int fileDescriptor;
std::vector<uint8_t> replyBuffer;
/** Number of bytes read will be written to this variable */
size_t replyLen;
} UartElements_t;
using UartDeviceMap = std::unordered_map<UartDeviceFile_t, UartElements_t>;
using UartDeviceMapIter = UartDeviceMap::iterator;
/**
* The uart devie map stores informations of initialized uart ports.
*/
UartDeviceMap uartDeviceMap;
/**
* @brief This function opens and configures a uart device by using the information stored
* in the uart cookie.
* @param uartCookie Pointer to uart cookie with information about the uart. Contains the
* uart device file, baudrate, parity, stopbits etc.
* @return The file descriptor of the configured uart.
*/
int configureUartPort(UartCookie* uartCookie);
/**
* @brief This function adds the parity settings to the termios options struct.
*
* @param options Pointer to termios options struct which will be modified to enable or disable
* parity checking.
* @param uartCookie Pointer to uart cookie containing the information about the desired
* parity settings.
*
*/
void setParityOptions(struct termios* options, UartCookie* uartCookie);
void setStopBitOptions(struct termios* options, UartCookie* uartCookie);
/**
* @brief This function sets options which are not configurable by the uartCookie.
*/
void setFixedOptions(struct termios* options);
/**
* @brief With this function the datasize settings are added to the termios options struct.
*/
void setDatasizeOptions(struct termios* options, UartCookie* uartCookie);
/**
* @brief This functions adds the baudrate specified in the uartCookie to the termios options
* struct.
*/
void configureBaudrate(struct termios* options, UartCookie* uartCookie);
};
#endif /* BSP_Q7S_COMIF_UARTCOMIF_H_ */