| 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 <stdio.h> |
| 36 | #include <string.h> |
| 37 | #include <stdlib.h> |
| 38 | |
| 39 | #include <stdint.h> |
| 40 | #include <stdbool.h> |
| 41 | |
| 42 | /* Used to substitute for an example serial port path on each platform. |
| 43 | */ |
| 44 | #ifdef _WIN32 |
| 45 | #define SERIAL_PORT_H "com3" |
| 46 | #elif __APPLE__ |
| 47 | #define SERIAL_PORT_H "/dev/tty.usbmodem*" |
| 48 | #else |
| 49 | #define SERIAL_PORT_H "/dev/ttyACM0" |
| 50 | #endif |
| 51 | |
| 52 | /* serial_port is declared as a void*, which you should cast to whatever type |
| 53 | * makes sense to your connection method. Both the posix and win32 |
| 54 | * implementations define their own structs in place. |
| 55 | */ |
| 56 | typedef void* serial_port; |
| 57 | |
| 58 | /* Returned by uart_open if the serial port specified was invalid. |
| 59 | */ |
| 60 | #define INVALID_SERIAL_PORT (void*)(~1) |
| 61 | |
| 62 | /* Returned by uart_open if the serial port specified is in use by another |
| 63 | * process. |
| 64 | */ |
| 65 | #define CLAIMED_SERIAL_PORT (void*)(~2) |
| 66 | |
| 67 | /* Given a user-specified port name, connect to the port and return a structure |
| 68 | * used for future references to that port. |
| 69 | * |
| 70 | * On errors, this method returns INVALID_SERIAL_PORT or CLAIMED_SERIAL_PORT. |
| 71 | */ |
| 72 | serial_port uart_open(const char* pcPortName); |
| 73 | |
| 74 | /* Closes the given port. |
| 75 | */ |
| 76 | void uart_close(const serial_port sp); |
| 77 | |
| 78 | /* Reads from the given serial port for up to 30ms. |
| 79 | * pbtRx: A pointer to a buffer for the returned data to be written to. |
| 80 | * pszMaxRxLen: The maximum data size we want to be sent. |
| 81 | * pszRxLen: The number of bytes that we were actually sent. |
| 82 | * |
| 83 | * Returns TRUE if any data was fetched, even if it was less than pszMaxRxLen. |
| 84 | * |
| 85 | * Returns FALSE if there was an error reading from the device. Note that a |
| 86 | * partial read may have completed into the buffer by the corresponding |
| 87 | * implementation, so pszRxLen should be checked to see if any data was written. |
| 88 | */ |
| 89 | bool uart_receive(const serial_port sp, uint8_t* pbtRx, size_t pszMaxRxLen, size_t* pszRxLen); |
| 90 | |
| 91 | /* Sends a buffer to a given serial port. |
| 92 | * pbtTx: A pointer to a buffer containing the data to send. |
| 93 | * szTxLen: The amount of data to be sent. |
| 94 | */ |
| 95 | bool uart_send(const serial_port sp, const uint8_t* pbtTx, const size_t szTxLen); |
| 96 | |
| 97 | /* Sets the current speed of the serial port, in baud. |
| 98 | */ |
| 99 | bool uart_set_speed(serial_port sp, const uint32_t uiPortSpeed); |
| 100 | |
| 101 | /* Gets the current speed of the serial port, in baud. |
| 102 | */ |
| 103 | uint32_t uart_get_speed(const serial_port sp); |
| 104 | |
| 105 | #endif // _PM3_UART_H_ |
| 106 | |