| | 1 | /* |
| | 2 | * Generic uart / rs232/ serial port library |
| | 3 | * |
| | 4 | * Copyright (c) 2013, Roel Verdult |
| | 5 | * All rights reserved. |
| | 6 | * |
| | 7 | * Redistribution and use in source and binary forms, with or without |
| | 8 | * modification, are permitted provided that the following conditions are met: |
| | 9 | * 1. Redistributions of source code must retain the above copyright |
| | 10 | * notice, this list of conditions and the following disclaimer. |
| | 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 12 | * notice, this list of conditions and the following disclaimer in the |
| | 13 | * documentation and/or other materials provided with the distribution. |
| | 14 | * 3. Neither the name of the copyright holders nor the |
| | 15 | * names of its contributors may be used to endorse or promote products |
| | 16 | * derived from this software without specific prior written permission. |
| | 17 | * |
| | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY |
| | 19 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| | 20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| | 22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| | 23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| | 24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| | 25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| | 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| | 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| | 28 | * |
| | 29 | * @file uart.h |
| | 30 | */ |
| | 31 | |
| | 32 | #ifndef PM3_UART_H__ |
| | 33 | #define PM3_UART_H__ |
| | 34 | |
| | 35 | #include <stdlib.h> |
| | 36 | #include <stdint.h> |
| | 37 | #include <stdbool.h> |
| | 38 | |
| | 39 | /* Used to substitute for an example serial port path on each platform. |
| | 40 | */ |
| | 41 | #ifdef _WIN32 |
| | 42 | #define SERIAL_PORT_H "com3" |
| | 43 | #elif __APPLE__ |
| | 44 | #define SERIAL_PORT_H "/dev/tty.usbmodem*" |
| | 45 | #else |
| | 46 | #define SERIAL_PORT_H "/dev/ttyACM0" |
| | 47 | #endif |
| | 48 | |
| | 49 | /* serial_port is declared as a void*, which you should cast to whatever type |
| | 50 | * makes sense to your connection method. Both the posix and win32 |
| | 51 | * implementations define their own structs in place. |
| | 52 | */ |
| | 53 | typedef void* serial_port; |
| | 54 | |
| | 55 | /* Returned by uart_open if the serial port specified was invalid. |
| | 56 | */ |
| | 57 | #define INVALID_SERIAL_PORT (void*)(~1) |
| | 58 | |
| | 59 | /* Returned by uart_open if the serial port specified is in use by another |
| | 60 | * process. |
| | 61 | */ |
| | 62 | #define CLAIMED_SERIAL_PORT (void*)(~2) |
| | 63 | |
| | 64 | /* Given a user-specified port name, connect to the port and return a structure |
| | 65 | * used for future references to that port. |
| | 66 | * |
| | 67 | * On errors, this method returns INVALID_SERIAL_PORT or CLAIMED_SERIAL_PORT. |
| | 68 | */ |
| | 69 | extern serial_port uart_open(const char* pcPortName); |
| | 70 | |
| | 71 | /* Closes the given port. |
| | 72 | */ |
| | 73 | extern void uart_close(const serial_port sp); |
| | 74 | |
| | 75 | /* Reads from the given serial port for up to 30ms. |
| | 76 | * pbtRx: A pointer to a buffer for the returned data to be written to. |
| | 77 | * pszMaxRxLen: The maximum data size we want to be sent. |
| | 78 | * pszRxLen: The number of bytes that we were actually sent. |
| | 79 | * |
| | 80 | * Returns TRUE if any data was fetched, even if it was less than pszMaxRxLen. |
| | 81 | * |
| | 82 | * Returns FALSE if there was an error reading from the device. Note that a |
| | 83 | * partial read may have completed into the buffer by the corresponding |
| | 84 | * implementation, so pszRxLen should be checked to see if any data was written. |
| | 85 | */ |
| | 86 | extern bool uart_receive(const serial_port sp, uint8_t* pbtRx, size_t pszMaxRxLen, size_t* pszRxLen); |
| | 87 | |
| | 88 | /* Sends a buffer to a given serial port. |
| | 89 | * pbtTx: A pointer to a buffer containing the data to send. |
| | 90 | * szTxLen: The amount of data to be sent. |
| | 91 | */ |
| | 92 | extern bool uart_send(const serial_port sp, const uint8_t* pbtTx, const size_t szTxLen); |
| | 93 | |
| | 94 | /* Sets the current speed of the serial port, in baud. |
| | 95 | */ |
| | 96 | bool uart_set_speed(serial_port sp, const uint32_t uiPortSpeed); |
| | 97 | |
| | 98 | /* Gets the current speed of the serial port, in baud. |
| | 99 | */ |
| | 100 | extern uint32_t uart_get_speed(const serial_port sp); |
| | 101 | |
| | 102 | #endif // _PM3_UART_H_ |
| | 103 | |
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