Mike Digman / MODSERIAL

Fork of MODSERIAL that works with LPC4088

Fork of MODSERIAL by Andy K

MODSERIAL.h@12:8c7394e2ae7f, 2011-01-20 (annotated)

Committer:
AjK
Date:
Thu Jan 20 11:57:32 2011 +0000
Revision:
12:8c7394e2ae7f
Parent:
11:a93a62eeeb9d
Child:
16:8b1dbf4cce4e
1.12 See ChangeLog

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AjK 12:8c7394e2ae7f 1 /*
AjK 12:8c7394e2ae7f 2 Copyright (c) 2010 Andy Kirkham
AjK 12:8c7394e2ae7f 3
AjK 12:8c7394e2ae7f 4 Permission is hereby granted, free of charge, to any person obtaining a copy
AjK 12:8c7394e2ae7f 5 of this software and associated documentation files (the "Software"), to deal
AjK 12:8c7394e2ae7f 6 in the Software without restriction, including without limitation the rights
AjK 12:8c7394e2ae7f 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
AjK 12:8c7394e2ae7f 8 copies of the Software, and to permit persons to whom the Software is
AjK 12:8c7394e2ae7f 9 furnished to do so, subject to the following conditions:
AjK 12:8c7394e2ae7f 10
AjK 12:8c7394e2ae7f 11 The above copyright notice and this permission notice shall be included in
AjK 12:8c7394e2ae7f 12 all copies or substantial portions of the Software.
AjK 12:8c7394e2ae7f 13
AjK 12:8c7394e2ae7f 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
AjK 12:8c7394e2ae7f 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
AjK 12:8c7394e2ae7f 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AjK 12:8c7394e2ae7f 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
AjK 12:8c7394e2ae7f 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
AjK 12:8c7394e2ae7f 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
AjK 12:8c7394e2ae7f 20 THE SOFTWARE.
AjK 12:8c7394e2ae7f 21
AjK 12:8c7394e2ae7f 22 @file MODSERIAL.h
AjK 12:8c7394e2ae7f 23 @purpose Extends Serial to provide fully buffered IO
AjK 12:8c7394e2ae7f 24 @version see ChangeLog.c
AjK 12:8c7394e2ae7f 25 @date Nov 2010
AjK 12:8c7394e2ae7f 26 @author Andy Kirkham
AjK 12:8c7394e2ae7f 27 */
AjK 12:8c7394e2ae7f 28
AjK 12:8c7394e2ae7f 29 #ifndef MODSERIAL_H
AjK 12:8c7394e2ae7f 30 #define MODSERIAL_H
AjK 12:8c7394e2ae7f 31
AjK 12:8c7394e2ae7f 32 /** @defgroup API The MODSERIAL API */
AjK 12:8c7394e2ae7f 33 /** @defgroup MISC Misc MODSERIAL functions */
AjK 12:8c7394e2ae7f 34 /** @defgroup INTERNALS MODSERIAL Internals */
AjK 12:8c7394e2ae7f 35
AjK 12:8c7394e2ae7f 36 #ifndef MODSERIAL_DEFAULT_RX_BUFFER_SIZE
AjK 12:8c7394e2ae7f 37 #define MODSERIAL_DEFAULT_RX_BUFFER_SIZE 256
AjK 12:8c7394e2ae7f 38 #endif
AjK 12:8c7394e2ae7f 39
AjK 12:8c7394e2ae7f 40 #ifndef MODSERIAL_DEFAULT_TX_BUFFER_SIZE
AjK 12:8c7394e2ae7f 41 #define MODSERIAL_DEFAULT_TX_BUFFER_SIZE 256
AjK 12:8c7394e2ae7f 42 #endif
AjK 12:8c7394e2ae7f 43
AjK 12:8c7394e2ae7f 44 #include "mbed.h"
AjK 12:8c7394e2ae7f 45
AjK 12:8c7394e2ae7f 46 namespace AjK {
AjK 12:8c7394e2ae7f 47
AjK 12:8c7394e2ae7f 48 /**
AjK 12:8c7394e2ae7f 49 * @author Andy Kirkham
AjK 12:8c7394e2ae7f 50 * @see http://mbed.org/cookbook/MODSERIAL
AjK 12:8c7394e2ae7f 51 * @see http://mbed.org/handbook/Serial
AjK 12:8c7394e2ae7f 52 * @see example.cpp
AjK 12:8c7394e2ae7f 53 * @see API
AjK 12:8c7394e2ae7f 54 *
AjK 12:8c7394e2ae7f 55 * <b>MODSERIAL</b> extends the Mbed library <a href="/handbook/Serial">Serial</a> to provide fully buffered
AjK 12:8c7394e2ae7f 56 * TX and RX streams. Buffer length is fully customisable.
AjK 12:8c7394e2ae7f 57 *
AjK 12:8c7394e2ae7f 58 * Before using MODSERIAL users should be familar with Mbed's standard <a href="/handbook/Serial">Serial</a>
AjK 12:8c7394e2ae7f 59 * library object. MODSERIAL is a direct "drop in" replacement for <a href="/handbook/Serial">Serial</a>. Where
AjK 12:8c7394e2ae7f 60 * previously Serial was used, MODSERIAL can be used as adirect replacement instantly offering standard
AjK 12:8c7394e2ae7f 61 * TX and RX buffering. By default, both TX and RX buffers are 256 bytes in length.
AjK 12:8c7394e2ae7f 62 *
AjK 12:8c7394e2ae7f 63 * @image html /media/uploads/mbedofficial/serial_interfaces.png
AjK 12:8c7394e2ae7f 64 *
AjK 12:8c7394e2ae7f 65 * Standard example:
AjK 12:8c7394e2ae7f 66 * @code
AjK 12:8c7394e2ae7f 67 * #include "mbed.h"
AjK 12:8c7394e2ae7f 68 * #include "MODSERIAL.h"
AjK 12:8c7394e2ae7f 69 *
AjK 12:8c7394e2ae7f 70 * MODSERIAL pc(USBTX, USBRX); // tx, rx
AjK 12:8c7394e2ae7f 71 *
AjK 12:8c7394e2ae7f 72 * int main() {
AjK 12:8c7394e2ae7f 73 * pc.printf("Hello World!");
AjK 12:8c7394e2ae7f 74 * while(1) {
AjK 12:8c7394e2ae7f 75 * pc.putc(pc.getc() + 1);
AjK 12:8c7394e2ae7f 76 * }
AjK 12:8c7394e2ae7f 77 * }
AjK 12:8c7394e2ae7f 78 * @endcode
AjK 12:8c7394e2ae7f 79 *
AjK 12:8c7394e2ae7f 80 * Example with alternate buffer length:
AjK 12:8c7394e2ae7f 81 * @code
AjK 12:8c7394e2ae7f 82 * #include "mbed.h"
AjK 12:8c7394e2ae7f 83 * #include "MODSERIAL.h"
AjK 12:8c7394e2ae7f 84 *
AjK 12:8c7394e2ae7f 85 * // Make TX and RX buffers 512byes in length
AjK 12:8c7394e2ae7f 86 * MODSERIAL pc(USBTX, USBRX, 512); // tx, rx
AjK 12:8c7394e2ae7f 87 *
AjK 12:8c7394e2ae7f 88 * int main() {
AjK 12:8c7394e2ae7f 89 * pc.printf("Hello World!");
AjK 12:8c7394e2ae7f 90 * while(1) {
AjK 12:8c7394e2ae7f 91 * pc.putc(pc.getc() + 1);
AjK 12:8c7394e2ae7f 92 * }
AjK 12:8c7394e2ae7f 93 * }
AjK 12:8c7394e2ae7f 94 * @endcode
AjK 12:8c7394e2ae7f 95 *
AjK 12:8c7394e2ae7f 96 * Example with alternate buffer length:
AjK 12:8c7394e2ae7f 97 * @code
AjK 12:8c7394e2ae7f 98 * #include "mbed.h"
AjK 12:8c7394e2ae7f 99 * #include "MODSERIAL.h"
AjK 12:8c7394e2ae7f 100 *
AjK 12:8c7394e2ae7f 101 * // Make TX 1024bytes and RX 512byes in length
AjK 12:8c7394e2ae7f 102 * MODSERIAL pc(USBTX, USBRX, 1024, 512); // tx, rx
AjK 12:8c7394e2ae7f 103 *
AjK 12:8c7394e2ae7f 104 * int main() {
AjK 12:8c7394e2ae7f 105 * pc.printf("Hello World!");
AjK 12:8c7394e2ae7f 106 * while(1) {
AjK 12:8c7394e2ae7f 107 * pc.putc(pc.getc() + 1);
AjK 12:8c7394e2ae7f 108 * }
AjK 12:8c7394e2ae7f 109 * }
AjK 12:8c7394e2ae7f 110 * @endcode
AjK 12:8c7394e2ae7f 111 */
AjK 12:8c7394e2ae7f 112 class MODSERIAL : public Serial
AjK 12:8c7394e2ae7f 113 {
AjK 12:8c7394e2ae7f 114 public:
AjK 12:8c7394e2ae7f 115
AjK 12:8c7394e2ae7f 116 //! A copy of the Serial parity enum
AjK 12:8c7394e2ae7f 117 /** @see http://mbed.org/projects/libraries/api/mbed/trunk/Serial#Serial.format */
AjK 12:8c7394e2ae7f 118 enum Parity {
AjK 12:8c7394e2ae7f 119 None = 0
AjK 12:8c7394e2ae7f 120 , Odd
AjK 12:8c7394e2ae7f 121 , Even
AjK 12:8c7394e2ae7f 122 , Forced1
AjK 12:8c7394e2ae7f 123 , Forced0
AjK 12:8c7394e2ae7f 124 };
AjK 12:8c7394e2ae7f 125
AjK 12:8c7394e2ae7f 126 //! A copy of the Serial IrqType enum
AjK 12:8c7394e2ae7f 127 enum IrqType {
AjK 12:8c7394e2ae7f 128 RxIrq = 0
AjK 12:8c7394e2ae7f 129 , TxIrq
AjK 12:8c7394e2ae7f 130 , RxOvIrq
AjK 12:8c7394e2ae7f 131 , TxOvIrq
AjK 12:8c7394e2ae7f 132 , TxEmpty
AjK 12:8c7394e2ae7f 133 , RxAutoDetect
AjK 12:8c7394e2ae7f 134 , NumOfIrqTypes
AjK 12:8c7394e2ae7f 135 };
AjK 12:8c7394e2ae7f 136
AjK 12:8c7394e2ae7f 137 //! Non-blocking functions return code.
AjK 12:8c7394e2ae7f 138 enum Result {
AjK 12:8c7394e2ae7f 139 Ok = 0 /*!< Ok. */
AjK 12:8c7394e2ae7f 140 , NoMemory = -1 /*!< Memory allocation failed. */
AjK 12:8c7394e2ae7f 141 , NoChar = -1 /*!< No character in buffer. */
AjK 12:8c7394e2ae7f 142 , BufferOversize = -2 /*!< Oversized buffer. */
AjK 12:8c7394e2ae7f 143 };
AjK 12:8c7394e2ae7f 144
AjK 12:8c7394e2ae7f 145 /**
AjK 12:8c7394e2ae7f 146 * The MODSERIAL constructor is used to initialise the serial object.
AjK 12:8c7394e2ae7f 147 *
AjK 12:8c7394e2ae7f 148 * @param tx PinName of the TX pin.
AjK 12:8c7394e2ae7f 149 * @param rx PinName of the TX pin.
AjK 12:8c7394e2ae7f 150 * @param name An option name for RPC usage.
AjK 12:8c7394e2ae7f 151 */
AjK 12:8c7394e2ae7f 152 MODSERIAL(PinName tx, PinName rx, const char *name = NULL);
AjK 12:8c7394e2ae7f 153
AjK 12:8c7394e2ae7f 154 /**
AjK 12:8c7394e2ae7f 155 * The MODSERIAL constructor is used to initialise the serial object.
AjK 12:8c7394e2ae7f 156 *
AjK 12:8c7394e2ae7f 157 * @param tx PinName of the TX pin.
AjK 12:8c7394e2ae7f 158 * @param rx PinName of the TX pin.
AjK 12:8c7394e2ae7f 159 * @param bufferSize Integer of the TX and RX buffer sizes.
AjK 12:8c7394e2ae7f 160 * @param name An option name for RPC usage.
AjK 12:8c7394e2ae7f 161 */
AjK 12:8c7394e2ae7f 162 MODSERIAL(PinName tx, PinName rx, int bufferSize, const char *name = NULL);
AjK 12:8c7394e2ae7f 163
AjK 12:8c7394e2ae7f 164 /**
AjK 12:8c7394e2ae7f 165 * The MODSERIAL constructor is used to initialise the serial object.
AjK 12:8c7394e2ae7f 166 *
AjK 12:8c7394e2ae7f 167 * @param tx PinName of the TX pin.
AjK 12:8c7394e2ae7f 168 * @param rx PinName of the TX pin.
AjK 12:8c7394e2ae7f 169 * @param txBufferSize Integer of the TX buffer sizes.
AjK 12:8c7394e2ae7f 170 * @param rxBufferSize Integer of the RX buffer sizes.
AjK 12:8c7394e2ae7f 171 * @param name An option name for RPC usage.
AjK 12:8c7394e2ae7f 172 */
AjK 12:8c7394e2ae7f 173 MODSERIAL(PinName tx, PinName rx, int txBufferSize, int rxBufferSize, const char *name = NULL);
AjK 12:8c7394e2ae7f 174
AjK 12:8c7394e2ae7f 175 virtual ~MODSERIAL();
AjK 12:8c7394e2ae7f 176
AjK 12:8c7394e2ae7f 177 /**
AjK 12:8c7394e2ae7f 178 * Function: attach
AjK 12:8c7394e2ae7f 179 *
AjK 12:8c7394e2ae7f 180 * The Mbed standard <a href="/handbook/Serial">Serial</a> library object allows an interrupt callback
AjK 12:8c7394e2ae7f 181 * to be made when a byte is received by the TX or RX UART hardware. MODSERIAL traps these interrupts
AjK 12:8c7394e2ae7f 182 * to enable it's buffering system. However, after the byte has been received/sent under interrupt control,
AjK 12:8c7394e2ae7f 183 * MODSERIAL can callback a user function as a notification of the interrupt. Note, user code should not
AjK 12:8c7394e2ae7f 184 * directly interact with the Uart hardware, MODSERIAL does that, instead, MODSERIAL API functions should
AjK 12:8c7394e2ae7f 185 * be used.
AjK 12:8c7394e2ae7f 186 *
AjK 12:8c7394e2ae7f 187 * <b>Note</b>, a character is written out then, if there is room in the TX FIFO and the TX buffer is empty,
AjK 12:8c7394e2ae7f 188 * putc() will put the character directly into THR (the output holding register). If the TX FIFO is full and
AjK 12:8c7394e2ae7f 189 * cannot accept the character, it is placed into the TX output buffer. The TX interrupts are then enabled
AjK 12:8c7394e2ae7f 190 * so that when the TX FIFO empties, the TX buffer is then transferred to the THR FIFO. The TxIrq will ONLY
AjK 12:8c7394e2ae7f 191 * be activated when this transfer of a character from BUFFER to THR FIFO takes place. If your character
AjK 12:8c7394e2ae7f 192 * throughput is not high bandwidth, then the 16 byte TX FIFO may be enough and the TX output buffer may
AjK 12:8c7394e2ae7f 193 * never come into play.
AjK 12:8c7394e2ae7f 194 *
AjK 12:8c7394e2ae7f 195 * @code
AjK 12:8c7394e2ae7f 196 * #include "mbed.h"
AjK 12:8c7394e2ae7f 197 * #include "MODSERIAL.h"
AjK 12:8c7394e2ae7f 198 *
AjK 12:8c7394e2ae7f 199 * DigitalOut led1(LED1);
AjK 12:8c7394e2ae7f 200 * DigitalOut led2(LED2);
AjK 12:8c7394e2ae7f 201 * DigitalOut led3(LED3);
AjK 12:8c7394e2ae7f 202 *
AjK 12:8c7394e2ae7f 203 * // To test, connect p9 to p10 as a loopback.
AjK 12:8c7394e2ae7f 204 * MODSERIAL pc(p9, p10);
AjK 12:8c7394e2ae7f 205 *
AjK 12:8c7394e2ae7f 206 * // This function is called when a character goes into the TX buffer.
AjK 12:8c7394e2ae7f 207 * void txCallback(void) {
AjK 12:8c7394e2ae7f 208 * led2 = !led2;
AjK 12:8c7394e2ae7f 209 * }
AjK 12:8c7394e2ae7f 210 *
AjK 12:8c7394e2ae7f 211 * // This function is called when a character goes into the RX buffer.
AjK 12:8c7394e2ae7f 212 * void rxCallback(void) {
AjK 12:8c7394e2ae7f 213 * led3 = !led3;
AjK 12:8c7394e2ae7f 214 * }
AjK 12:8c7394e2ae7f 215 *
AjK 12:8c7394e2ae7f 216 * int main() {
AjK 12:8c7394e2ae7f 217 * pc.baud(115200);
AjK 12:8c7394e2ae7f 218 * pc.attach(&txCallback, MODSERIAL::TxIrq);
AjK 12:8c7394e2ae7f 219 * pc.attach(&rxCallback, MODSERIAL::RxIrq);
AjK 12:8c7394e2ae7f 220 *
AjK 12:8c7394e2ae7f 221 * while(1) {
AjK 12:8c7394e2ae7f 222 * led1 = !led1;
AjK 12:8c7394e2ae7f 223 * wait(0.5);
AjK 12:8c7394e2ae7f 224 * pc.putc('A');
AjK 12:8c7394e2ae7f 225 * wait(0.5);
AjK 12:8c7394e2ae7f 226 * }
AjK 12:8c7394e2ae7f 227 * ]
AjK 12:8c7394e2ae7f 228 * @endcode
AjK 12:8c7394e2ae7f 229 *
AjK 12:8c7394e2ae7f 230 * @ingroup API
AjK 12:8c7394e2ae7f 231 * @param fptr A pointer to a void function, or 0 to set as none
AjK 12:8c7394e2ae7f 232 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
AjK 12:8c7394e2ae7f 233 */
AjK 12:8c7394e2ae7f 234 void attach(void (*fptr)(void), IrqType type = RxIrq) { _isr[type].attach(fptr); }
AjK 12:8c7394e2ae7f 235
AjK 12:8c7394e2ae7f 236 /**
AjK 12:8c7394e2ae7f 237 * Function: attach
AjK 12:8c7394e2ae7f 238 *
AjK 12:8c7394e2ae7f 239 * The Mbed standard <a href="/handbook/Serial">Serial</a> library object allows an interrupt callback
AjK 12:8c7394e2ae7f 240 * to be made when a byte is received by the TX or RX UART hardware. MODSERIAL traps these interrupts
AjK 12:8c7394e2ae7f 241 * to enable it's buffering system. However, after the byte has been received/sent under interrupt control,
AjK 12:8c7394e2ae7f 242 * MODSERIAL can callback a user function as a notification of the interrupt. Note, user code should not
AjK 12:8c7394e2ae7f 243 * directly interact with the Uart hardware, MODSERIAL does that, instead, MODSERIAL API functions should
AjK 12:8c7394e2ae7f 244 * be used.
AjK 12:8c7394e2ae7f 245 *
AjK 12:8c7394e2ae7f 246 * <b>Note</b>, a character is written out then, if there is room in the TX FIFO and the TX buffer is empty,
AjK 12:8c7394e2ae7f 247 * putc() will put the character directly into THR (the output holding register). If the TX FIFO is full and
AjK 12:8c7394e2ae7f 248 * cannot accept the character, it is placed into the TX output buffer. The TX interrupts are then enabled
AjK 12:8c7394e2ae7f 249 * so that when the TX FIFO empties, the TX buffer is then transferred to the THR FIFO. The TxIrq will ONLY
AjK 12:8c7394e2ae7f 250 * be activated when this transfer of a character from BUFFER to THR FIFO takes place. If your character
AjK 12:8c7394e2ae7f 251 * throughput is not high bandwidth, then the 16 byte TX FIFO may be enough and the TX output buffer may
AjK 12:8c7394e2ae7f 252 * never come into play.
AjK 12:8c7394e2ae7f 253 *
AjK 12:8c7394e2ae7f 254 * @code
AjK 12:8c7394e2ae7f 255 * #include "mbed.h"
AjK 12:8c7394e2ae7f 256 * #include "MODSERIAL.h"
AjK 12:8c7394e2ae7f 257 *
AjK 12:8c7394e2ae7f 258 * DigitalOut led1(LED1);
AjK 12:8c7394e2ae7f 259 * DigitalOut led2(LED2);
AjK 12:8c7394e2ae7f 260 * DigitalOut led3(LED3);
AjK 12:8c7394e2ae7f 261 *
AjK 12:8c7394e2ae7f 262 * // To test, connect p9 to p10 as a loopback.
AjK 12:8c7394e2ae7f 263 * MODSERIAL pc(p9, p10);
AjK 12:8c7394e2ae7f 264 *
AjK 12:8c7394e2ae7f 265 * class Foo {
AjK 12:8c7394e2ae7f 266 * public:
AjK 12:8c7394e2ae7f 267 * // This method is called when a character goes into the TX buffer.
AjK 12:8c7394e2ae7f 268 * void txCallback(void) { led2 = !led2; }
AjK 12:8c7394e2ae7f 269 *
AjK 12:8c7394e2ae7f 270 * // This method is called when a character goes into the RX buffer.
AjK 12:8c7394e2ae7f 271 * void rxCallback(void) { led3 = !led3; }
AjK 12:8c7394e2ae7f 272 * };
AjK 12:8c7394e2ae7f 273 *
AjK 12:8c7394e2ae7f 274 * Foo foo;
AjK 12:8c7394e2ae7f 275 *
AjK 12:8c7394e2ae7f 276 * int main() {
AjK 12:8c7394e2ae7f 277 * pc.baud(115200);
AjK 12:8c7394e2ae7f 278 * pc.attach(&foo, &Foo::txCallback, MODSERIAL::TxIrq);
AjK 12:8c7394e2ae7f 279 * pc.attach(&foo, &Foo::rxCallback, MODSERIAL::RxIrq);
AjK 12:8c7394e2ae7f 280 *
AjK 12:8c7394e2ae7f 281 * while(1) {
AjK 12:8c7394e2ae7f 282 * led1 = !led1;
AjK 12:8c7394e2ae7f 283 * wait(0.5);
AjK 12:8c7394e2ae7f 284 * pc.putc('A');
AjK 12:8c7394e2ae7f 285 * wait(0.5);
AjK 12:8c7394e2ae7f 286 * }
AjK 12:8c7394e2ae7f 287 * ]
AjK 12:8c7394e2ae7f 288 * @endcode
AjK 12:8c7394e2ae7f 289 *
AjK 12:8c7394e2ae7f 290 * @ingroup API
AjK 12:8c7394e2ae7f 291 * @param tptr A pointer to the object to call the member function on
AjK 12:8c7394e2ae7f 292 * @param mptr A pointer to the member function to be called
AjK 12:8c7394e2ae7f 293 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
AjK 12:8c7394e2ae7f 294 */
AjK 12:8c7394e2ae7f 295 template<typename T>
AjK 12:8c7394e2ae7f 296 void attach(T* tptr, void (T::*mptr)(void), IrqType type = RxIrq) {
AjK 12:8c7394e2ae7f 297 if((mptr != NULL) && (tptr != NULL)) {
AjK 12:8c7394e2ae7f 298 _isr[type].attach(tptr, mptr);
AjK 12:8c7394e2ae7f 299 }
AjK 12:8c7394e2ae7f 300 }
AjK 12:8c7394e2ae7f 301
AjK 12:8c7394e2ae7f 302 /**
AjK 12:8c7394e2ae7f 303 * @see attach
AjK 12:8c7394e2ae7f 304 * @ingroup API
AjK 12:8c7394e2ae7f 305 */
AjK 12:8c7394e2ae7f 306 void connect(void (*fptr)(void), IrqType type = RxIrq) { _isr[RxIrq].attach(fptr); }
AjK 12:8c7394e2ae7f 307
AjK 12:8c7394e2ae7f 308 /**
AjK 12:8c7394e2ae7f 309 * @see attach
AjK 12:8c7394e2ae7f 310 * @ingroup API
AjK 12:8c7394e2ae7f 311 */
AjK 12:8c7394e2ae7f 312 template<typename T>
AjK 12:8c7394e2ae7f 313 void connect(T* tptr, void (T::*mptr)(void), IrqType type = RxIrq) {
AjK 12:8c7394e2ae7f 314 if((mptr != NULL) && (tptr != NULL)) {
AjK 12:8c7394e2ae7f 315 _isr[type].attach(tptr, mptr);
AjK 12:8c7394e2ae7f 316 }
AjK 12:8c7394e2ae7f 317 }
AjK 12:8c7394e2ae7f 318
AjK 12:8c7394e2ae7f 319 /**
AjK 12:8c7394e2ae7f 320 * Function: writeable
AjK 12:8c7394e2ae7f 321 *
AjK 12:8c7394e2ae7f 322 * Determine if there is space available to write a byte
AjK 12:8c7394e2ae7f 323 *
AjK 12:8c7394e2ae7f 324 * @ingroup API
AjK 12:8c7394e2ae7f 325 * @return 1 if there is space to write a character, else 0
AjK 12:8c7394e2ae7f 326 */
AjK 12:8c7394e2ae7f 327 int writeable() { return txBufferFull() ? 0 : 1; }
AjK 12:8c7394e2ae7f 328
AjK 12:8c7394e2ae7f 329 /**
AjK 12:8c7394e2ae7f 330 * Function: readable
AjK 12:8c7394e2ae7f 331 *
AjK 12:8c7394e2ae7f 332 * Determine if there is a byte available to read
AjK 12:8c7394e2ae7f 333 *
AjK 12:8c7394e2ae7f 334 * @ingroup API
AjK 12:8c7394e2ae7f 335 * @return 1 if there is a character available to read, else 0
AjK 12:8c7394e2ae7f 336 */
AjK 12:8c7394e2ae7f 337 int readable() { return rxBufferEmpty() ? 0 : 1; }
AjK 12:8c7394e2ae7f 338
AjK 12:8c7394e2ae7f 339 /**
AjK 12:8c7394e2ae7f 340 * Function: txBufferSane
AjK 12:8c7394e2ae7f 341 *
AjK 12:8c7394e2ae7f 342 * Determine if the TX buffer has been initialized.
AjK 12:8c7394e2ae7f 343 *
AjK 12:8c7394e2ae7f 344 * @ingroup API
AjK 12:8c7394e2ae7f 345 * @return true if the buffer is initialized, else false
AjK 12:8c7394e2ae7f 346 */
AjK 12:8c7394e2ae7f 347 bool txBufferSane(void) { return buffer[TxIrq] != (char *)NULL ? true : false; }
AjK 12:8c7394e2ae7f 348
AjK 12:8c7394e2ae7f 349 /**
AjK 12:8c7394e2ae7f 350 * Function: rxBufferSane
AjK 12:8c7394e2ae7f 351 *
AjK 12:8c7394e2ae7f 352 * Determine if the RX buffer has been initialized.
AjK 12:8c7394e2ae7f 353 *
AjK 12:8c7394e2ae7f 354 * @ingroup API
AjK 12:8c7394e2ae7f 355 * @return true if the buffer is initialized, else false
AjK 12:8c7394e2ae7f 356 */
AjK 12:8c7394e2ae7f 357 bool rxBufferSane(void) { return buffer[TxIrq] != (char *)NULL ? true : false; }
AjK 12:8c7394e2ae7f 358
AjK 12:8c7394e2ae7f 359 /**
AjK 12:8c7394e2ae7f 360 * Function: txBufferGetCount
AjK 12:8c7394e2ae7f 361 *
AjK 12:8c7394e2ae7f 362 * Returns how many bytes are in the TX buffer
AjK 12:8c7394e2ae7f 363 *
AjK 12:8c7394e2ae7f 364 * @ingroup API
AjK 12:8c7394e2ae7f 365 * @return The number of bytes in the TX buffer
AjK 12:8c7394e2ae7f 366 */
AjK 12:8c7394e2ae7f 367 int txBufferGetCount(void) { return buffer_count[TxIrq]; }
AjK 12:8c7394e2ae7f 368
AjK 12:8c7394e2ae7f 369 /**
AjK 12:8c7394e2ae7f 370 * Function: rxBufferGetCount
AjK 12:8c7394e2ae7f 371 *
AjK 12:8c7394e2ae7f 372 * Returns how many bytes are in the RX buffer
AjK 12:8c7394e2ae7f 373 *
AjK 12:8c7394e2ae7f 374 * @ingroup API
AjK 12:8c7394e2ae7f 375 * @return The number of bytes in the RX buffer
AjK 12:8c7394e2ae7f 376 */
AjK 12:8c7394e2ae7f 377 int rxBufferGetCount(void) { return buffer_count[RxIrq]; }
AjK 12:8c7394e2ae7f 378
AjK 12:8c7394e2ae7f 379 /**
AjK 12:8c7394e2ae7f 380 * Function: txBufferGetSize
AjK 12:8c7394e2ae7f 381 *
AjK 12:8c7394e2ae7f 382 * Returns the current size of the TX buffer
AjK 12:8c7394e2ae7f 383 *
AjK 12:8c7394e2ae7f 384 * @ingroup API
AjK 12:8c7394e2ae7f 385 * @return The length iof the TX buffer in bytes
AjK 12:8c7394e2ae7f 386 */
AjK 12:8c7394e2ae7f 387 int txBufferGetSize(int size) { return buffer_size[TxIrq]; }
AjK 12:8c7394e2ae7f 388
AjK 12:8c7394e2ae7f 389 /**
AjK 12:8c7394e2ae7f 390 * Function: rxBufferGetSize
AjK 12:8c7394e2ae7f 391 *
AjK 12:8c7394e2ae7f 392 * Returns the current size of the RX buffer
AjK 12:8c7394e2ae7f 393 *
AjK 12:8c7394e2ae7f 394 * @ingroup API
AjK 12:8c7394e2ae7f 395 * @return The length iof the RX buffer in bytes
AjK 12:8c7394e2ae7f 396 */
AjK 12:8c7394e2ae7f 397 int rxBufferGetSize(int size) { return buffer_size[RxIrq]; }
AjK 12:8c7394e2ae7f 398
AjK 12:8c7394e2ae7f 399 /**
AjK 12:8c7394e2ae7f 400 * Function: txBufferFull
AjK 12:8c7394e2ae7f 401 *
AjK 12:8c7394e2ae7f 402 * Is the TX buffer full?
AjK 12:8c7394e2ae7f 403 *
AjK 12:8c7394e2ae7f 404 * @ingroup API
AjK 12:8c7394e2ae7f 405 * @return true if the TX buffer is full, otherwise false
AjK 12:8c7394e2ae7f 406 */
AjK 12:8c7394e2ae7f 407 bool txBufferFull(void);
AjK 12:8c7394e2ae7f 408
AjK 12:8c7394e2ae7f 409 /**
AjK 12:8c7394e2ae7f 410 * Function: rxBufferFull
AjK 12:8c7394e2ae7f 411 *
AjK 12:8c7394e2ae7f 412 * Is the RX buffer full?
AjK 12:8c7394e2ae7f 413 *
AjK 12:8c7394e2ae7f 414 * @ingroup API
AjK 12:8c7394e2ae7f 415 * @return true if the RX buffer is full, otherwise false
AjK 12:8c7394e2ae7f 416 */
AjK 12:8c7394e2ae7f 417 bool rxBufferFull(void);
AjK 12:8c7394e2ae7f 418
AjK 12:8c7394e2ae7f 419 /**
AjK 12:8c7394e2ae7f 420 * Function: txBufferEmpty
AjK 12:8c7394e2ae7f 421 *
AjK 12:8c7394e2ae7f 422 * Is the TX buffer empty?
AjK 12:8c7394e2ae7f 423 *
AjK 12:8c7394e2ae7f 424 * @ingroup API
AjK 12:8c7394e2ae7f 425 * @return true if the TX buffer is empty, otherwise false
AjK 12:8c7394e2ae7f 426 */
AjK 12:8c7394e2ae7f 427 bool txBufferEmpty(void);
AjK 12:8c7394e2ae7f 428
AjK 12:8c7394e2ae7f 429 /**
AjK 12:8c7394e2ae7f 430 * Function: rxBufferEmpty
AjK 12:8c7394e2ae7f 431 *
AjK 12:8c7394e2ae7f 432 * Is the RX buffer empty?
AjK 12:8c7394e2ae7f 433 *
AjK 12:8c7394e2ae7f 434 * @ingroup API
AjK 12:8c7394e2ae7f 435 * @return true if the RX buffer is empty, otherwise false
AjK 12:8c7394e2ae7f 436 */
AjK 12:8c7394e2ae7f 437 bool rxBufferEmpty(void);
AjK 12:8c7394e2ae7f 438
AjK 12:8c7394e2ae7f 439 /**
AjK 12:8c7394e2ae7f 440 * Function: txBufferSetSize
AjK 12:8c7394e2ae7f 441 *
AjK 12:8c7394e2ae7f 442 * Change the TX buffer size.
AjK 12:8c7394e2ae7f 443 *
AjK 12:8c7394e2ae7f 444 * @see Result
AjK 12:8c7394e2ae7f 445 * @ingroup API
AjK 12:8c7394e2ae7f 446 * @param size The new TX buffer size in bytes.
AjK 12:8c7394e2ae7f 447 * @param m Perform a memory sanity check. Errs the Mbed if memory alloc fails.
AjK 12:8c7394e2ae7f 448 * @return Result Ok on success.
AjK 12:8c7394e2ae7f 449 */
AjK 12:8c7394e2ae7f 450 int txBufferSetSize(int size, bool m) { return resizeBuffer(size, TxIrq, m); }
AjK 12:8c7394e2ae7f 451
AjK 12:8c7394e2ae7f 452 /**
AjK 12:8c7394e2ae7f 453 * Function: rxBufferSetSize
AjK 12:8c7394e2ae7f 454 *
AjK 12:8c7394e2ae7f 455 * Change the RX buffer size.
AjK 12:8c7394e2ae7f 456 *
AjK 12:8c7394e2ae7f 457 * @see Result
AjK 12:8c7394e2ae7f 458 * @ingroup API
AjK 12:8c7394e2ae7f 459 * @param size The new RX buffer size in bytes.
AjK 12:8c7394e2ae7f 460 * @param m Perform a memory sanity check. Errs the Mbed if memory alloc fails.
AjK 12:8c7394e2ae7f 461 * @return Result Ok on success.
AjK 12:8c7394e2ae7f 462 */
AjK 12:8c7394e2ae7f 463 int rxBufferSetSize(int size, bool m) { return resizeBuffer(size, RxIrq, m); }
AjK 12:8c7394e2ae7f 464
AjK 12:8c7394e2ae7f 465 /**
AjK 12:8c7394e2ae7f 466 * Function: txBufferSetSize
AjK 12:8c7394e2ae7f 467 *
AjK 12:8c7394e2ae7f 468 * Change the TX buffer size.
AjK 12:8c7394e2ae7f 469 * Always performs a memory sanity check, halting the Mbed on failure.
AjK 12:8c7394e2ae7f 470 *
AjK 12:8c7394e2ae7f 471 * @see Result
AjK 12:8c7394e2ae7f 472 * @ingroup API
AjK 12:8c7394e2ae7f 473 * @param size The new TX buffer size in bytes.
AjK 12:8c7394e2ae7f 474 * @return Result Ok on success.
AjK 12:8c7394e2ae7f 475 */
AjK 12:8c7394e2ae7f 476 int txBufferSetSize(int size) { return resizeBuffer(size, TxIrq, true); }
AjK 12:8c7394e2ae7f 477
AjK 12:8c7394e2ae7f 478 /**
AjK 12:8c7394e2ae7f 479 * Function: rxBufferSetSize
AjK 12:8c7394e2ae7f 480 *
AjK 12:8c7394e2ae7f 481 * Change the RX buffer size.
AjK 12:8c7394e2ae7f 482 * Always performs a memory sanity check, halting the Mbed on failure.
AjK 12:8c7394e2ae7f 483 *
AjK 12:8c7394e2ae7f 484 * @see Result
AjK 12:8c7394e2ae7f 485 * @ingroup API
AjK 12:8c7394e2ae7f 486 * @param size The new RX buffer size in bytes.
AjK 12:8c7394e2ae7f 487 * @return Result Ok on success.
AjK 12:8c7394e2ae7f 488 */
AjK 12:8c7394e2ae7f 489 int rxBufferSetSize(int size) { return resizeBuffer(size, RxIrq, true); }
AjK 12:8c7394e2ae7f 490
AjK 12:8c7394e2ae7f 491 /**
AjK 12:8c7394e2ae7f 492 * Function: txBufferFlush
AjK 12:8c7394e2ae7f 493 *
AjK 12:8c7394e2ae7f 494 * Remove all bytes from the TX buffer.
AjK 12:8c7394e2ae7f 495 * @ingroup API
AjK 12:8c7394e2ae7f 496 */
AjK 12:8c7394e2ae7f 497 void txBufferFlush(void) { flushBuffer(TxIrq); }
AjK 12:8c7394e2ae7f 498
AjK 12:8c7394e2ae7f 499 /**
AjK 12:8c7394e2ae7f 500 * Function: rxBufferFlush
AjK 12:8c7394e2ae7f 501 *
AjK 12:8c7394e2ae7f 502 * Remove all bytes from the RX buffer.
AjK 12:8c7394e2ae7f 503 * @ingroup API
AjK 12:8c7394e2ae7f 504 */
AjK 12:8c7394e2ae7f 505 void rxBufferFlush(void) { flushBuffer(RxIrq); }
AjK 12:8c7394e2ae7f 506
AjK 12:8c7394e2ae7f 507 /**
AjK 12:8c7394e2ae7f 508 * Function: getcNb
AjK 12:8c7394e2ae7f 509 *
AjK 12:8c7394e2ae7f 510 * Like getc() but is non-blocking. If no bytes are in the RX buffer this
AjK 12:8c7394e2ae7f 511 * function returns Result::NoChar (-1)
AjK 12:8c7394e2ae7f 512 *
AjK 12:8c7394e2ae7f 513 * @ingroup API
AjK 12:8c7394e2ae7f 514 * @return A byte from the RX buffer or Result::NoChar (-1) if bufer empty.
AjK 12:8c7394e2ae7f 515 */
AjK 12:8c7394e2ae7f 516 int getcNb() { return __getc(false); }
AjK 12:8c7394e2ae7f 517
AjK 12:8c7394e2ae7f 518 /**
AjK 12:8c7394e2ae7f 519 * Function: getc
AjK 12:8c7394e2ae7f 520 *
AjK 12:8c7394e2ae7f 521 * Overloaded version of Serial::getc()
AjK 12:8c7394e2ae7f 522 *
AjK 12:8c7394e2ae7f 523 * This function blocks (if the RX buffer is empty the function will wait for a
AjK 12:8c7394e2ae7f 524 * character to arrive and then return that character).
AjK 12:8c7394e2ae7f 525 *
AjK 12:8c7394e2ae7f 526 * @ingroup API
AjK 12:8c7394e2ae7f 527 * @return A byte from the RX buffer
AjK 12:8c7394e2ae7f 528 */
AjK 12:8c7394e2ae7f 529 int getc() { return __getc(true); }
AjK 12:8c7394e2ae7f 530
AjK 12:8c7394e2ae7f 531 /**
AjK 12:8c7394e2ae7f 532 * Function: txGetLastChar
AjK 12:8c7394e2ae7f 533 *
AjK 12:8c7394e2ae7f 534 * Rteurn the last byte to pass through the TX interrupt handler.
AjK 12:8c7394e2ae7f 535 *
AjK 12:8c7394e2ae7f 536 * @ingroup MISC
AjK 12:8c7394e2ae7f 537 * @return The byte
AjK 12:8c7394e2ae7f 538 */
AjK 12:8c7394e2ae7f 539 char txGetLastChar(void) { return txc; }
AjK 12:8c7394e2ae7f 540
AjK 12:8c7394e2ae7f 541 /**
AjK 12:8c7394e2ae7f 542 * Function: rxGetLastChar
AjK 12:8c7394e2ae7f 543 *
AjK 12:8c7394e2ae7f 544 * Return the last byte to pass through the RX interrupt handler.
AjK 12:8c7394e2ae7f 545 *
AjK 12:8c7394e2ae7f 546 * @ingroup MISC
AjK 12:8c7394e2ae7f 547 * @return The byte
AjK 12:8c7394e2ae7f 548 */
AjK 12:8c7394e2ae7f 549 char rxGetLastChar(void) { return rxc; }
AjK 12:8c7394e2ae7f 550
AjK 12:8c7394e2ae7f 551 /**
AjK 12:8c7394e2ae7f 552 * Function: txIsBusy
AjK 12:8c7394e2ae7f 553 *
AjK 12:8c7394e2ae7f 554 * If the Uart is still actively sending characters this
AjK 12:8c7394e2ae7f 555 * function will return true.
AjK 12:8c7394e2ae7f 556 *
AjK 12:8c7394e2ae7f 557 * @ingroup API
AjK 12:8c7394e2ae7f 558 * @return bool
AjK 12:8c7394e2ae7f 559 */
AjK 12:8c7394e2ae7f 560 bool txIsBusy(void);
AjK 12:8c7394e2ae7f 561
AjK 12:8c7394e2ae7f 562 /**
AjK 12:8c7394e2ae7f 563 * Function: autoDectectChar
AjK 12:8c7394e2ae7f 564 *
AjK 12:8c7394e2ae7f 565 * Set the char that, if seen incoming, invokes the AutoDetectChar callback.
AjK 12:8c7394e2ae7f 566 *
AjK 12:8c7394e2ae7f 567 * @ingroup API
AjK 12:8c7394e2ae7f 568 * @param int c The character to detect.
AjK 12:8c7394e2ae7f 569 */
AjK 12:8c7394e2ae7f 570 void autoDectectChar(char c) { auto_detect_char = c; }
AjK 12:8c7394e2ae7f 571
AjK 12:8c7394e2ae7f 572 /**
AjK 12:8c7394e2ae7f 573 * Function: move
AjK 12:8c7394e2ae7f 574 *
AjK 12:8c7394e2ae7f 575 * Move contents of RX buffer to external buffer. Stops if "end" detected.
AjK 12:8c7394e2ae7f 576 *
AjK 12:8c7394e2ae7f 577 * @ingroup API
AjK 12:8c7394e2ae7f 578 * @param char *s The destination buffer address
AjK 12:8c7394e2ae7f 579 * @param int max The maximum number of chars to move.
AjK 12:8c7394e2ae7f 580 * @param char end If this char is detected stop moving.
AjK 12:8c7394e2ae7f 581 */
AjK 12:8c7394e2ae7f 582 int move(char *s, int max, char end) {
AjK 12:8c7394e2ae7f 583 int counter = 0;
AjK 12:8c7394e2ae7f 584 char c;
AjK 12:8c7394e2ae7f 585 while(readable()) {
AjK 12:8c7394e2ae7f 586 c = getc();
AjK 12:8c7394e2ae7f 587 if (c == end) break;
AjK 12:8c7394e2ae7f 588 *(s++) = c;
AjK 12:8c7394e2ae7f 589 counter++;
AjK 12:8c7394e2ae7f 590 if (counter == max) break;
AjK 12:8c7394e2ae7f 591 }
AjK 12:8c7394e2ae7f 592 return counter;
AjK 12:8c7394e2ae7f 593 }
AjK 12:8c7394e2ae7f 594
AjK 12:8c7394e2ae7f 595 /**
AjK 12:8c7394e2ae7f 596 * Function: move (overloaded)
AjK 12:8c7394e2ae7f 597 *
AjK 12:8c7394e2ae7f 598 * Move contents of RX buffer to external buffer. Stops if auto_detect_char detected.
AjK 12:8c7394e2ae7f 599 *
AjK 12:8c7394e2ae7f 600 * @ingroup API
AjK 12:8c7394e2ae7f 601 * @param int max The maximum number of chars to move.
AjK 12:8c7394e2ae7f 602 * @param char *s The destination buffer address
AjK 12:8c7394e2ae7f 603 */
AjK 12:8c7394e2ae7f 604 int move(char *s, int max) {
AjK 12:8c7394e2ae7f 605 return move(s, max, auto_detect_char);
AjK 12:8c7394e2ae7f 606 }
AjK 12:8c7394e2ae7f 607
AjK 12:8c7394e2ae7f 608 #if 0 // Inhereted from Serial/Stream, for documentation only
AjK 12:8c7394e2ae7f 609 /**
AjK 12:8c7394e2ae7f 610 * Function: putc
AjK 12:8c7394e2ae7f 611 *
AjK 12:8c7394e2ae7f 612 * Write a character
AjK 12:8c7394e2ae7f 613 * Inhereted from Serial/Stream
AjK 12:8c7394e2ae7f 614 *
AjK 12:8c7394e2ae7f 615 * @see http://mbed.org/projects/libraries/api/mbed/trunk/Serial#Serial.putc
AjK 12:8c7394e2ae7f 616 * @ingroup API
AjK 12:8c7394e2ae7f 617 * @param c The character to write to the serial port
AjK 12:8c7394e2ae7f 618 */
AjK 12:8c7394e2ae7f 619 int putc(int c);
AjK 12:8c7394e2ae7f 620 #endif
AjK 12:8c7394e2ae7f 621
AjK 12:8c7394e2ae7f 622 #if 0 // Inhereted from Serial/Stream, for documentation only
AjK 12:8c7394e2ae7f 623 /**
AjK 12:8c7394e2ae7f 624 * Function: printf
AjK 12:8c7394e2ae7f 625 *
AjK 12:8c7394e2ae7f 626 * Write a formated string
AjK 12:8c7394e2ae7f 627 * Inhereted from Serial/Stream
AjK 12:8c7394e2ae7f 628 *
AjK 12:8c7394e2ae7f 629 * @see http://mbed.org/projects/libraries/api/mbed/trunk/Serial#Serial.printf
AjK 12:8c7394e2ae7f 630 * @ingroup API
AjK 12:8c7394e2ae7f 631 * @param format A printf-style format string, followed by the variables to use in formating the string.
AjK 12:8c7394e2ae7f 632 */
AjK 12:8c7394e2ae7f 633 int printf(const char* format, ...);
AjK 12:8c7394e2ae7f 634 #endif
AjK 12:8c7394e2ae7f 635
AjK 12:8c7394e2ae7f 636 #if 0 // Inhereted from Serial/Stream, for documentation only
AjK 12:8c7394e2ae7f 637 /**
AjK 12:8c7394e2ae7f 638 * Function: scanf
AjK 12:8c7394e2ae7f 639 *
AjK 12:8c7394e2ae7f 640 * Read a formated string
AjK 12:8c7394e2ae7f 641 * Inhereted from Serial/Stream
AjK 12:8c7394e2ae7f 642 *
AjK 12:8c7394e2ae7f 643 * @see http://mbed.org/projects/libraries/api/mbed/trunk/Serial#Serial.scanf
AjK 12:8c7394e2ae7f 644 * @ingroup API
AjK 12:8c7394e2ae7f 645 * @param format - A scanf-style format string, followed by the pointers to variables to store the results.
AjK 12:8c7394e2ae7f 646 */
AjK 12:8c7394e2ae7f 647 int scanf(const char* format, ...);
AjK 12:8c7394e2ae7f 648 #endif
AjK 12:8c7394e2ae7f 649
AjK 12:8c7394e2ae7f 650 protected:
AjK 12:8c7394e2ae7f 651
AjK 12:8c7394e2ae7f 652 /**
AjK 12:8c7394e2ae7f 653 * A pointer to the UART peripheral base address being used.
AjK 12:8c7394e2ae7f 654 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 655 */
AjK 12:8c7394e2ae7f 656 void *_base;
AjK 12:8c7394e2ae7f 657
AjK 12:8c7394e2ae7f 658 /**
AjK 12:8c7394e2ae7f 659 * The last byte to pass through the TX IRQ handler.
AjK 12:8c7394e2ae7f 660 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 661 */
AjK 12:8c7394e2ae7f 662 volatile char txc;
AjK 12:8c7394e2ae7f 663
AjK 12:8c7394e2ae7f 664 /**
AjK 12:8c7394e2ae7f 665 * The last byte to pass through the RX IRQ handler.
AjK 12:8c7394e2ae7f 666 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 667 */
AjK 12:8c7394e2ae7f 668 volatile char rxc;
AjK 12:8c7394e2ae7f 669
AjK 12:8c7394e2ae7f 670 /**
AjK 12:8c7394e2ae7f 671 * Pointers to the TX and RX buffers.
AjK 12:8c7394e2ae7f 672 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 673 */
AjK 12:8c7394e2ae7f 674 volatile char *buffer[2];
AjK 12:8c7394e2ae7f 675
AjK 12:8c7394e2ae7f 676 /**
AjK 12:8c7394e2ae7f 677 * Buffer in pointers.
AjK 12:8c7394e2ae7f 678 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 679 */
AjK 12:8c7394e2ae7f 680 volatile int buffer_in[2];
AjK 12:8c7394e2ae7f 681
AjK 12:8c7394e2ae7f 682 /**
AjK 12:8c7394e2ae7f 683 * Buffer out pointers.
AjK 12:8c7394e2ae7f 684 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 685 */
AjK 12:8c7394e2ae7f 686 volatile int buffer_out[2];
AjK 12:8c7394e2ae7f 687
AjK 12:8c7394e2ae7f 688 /**
AjK 12:8c7394e2ae7f 689 * Buffer lengths.
AjK 12:8c7394e2ae7f 690 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 691 */
AjK 12:8c7394e2ae7f 692 volatile int buffer_size[2];
AjK 12:8c7394e2ae7f 693
AjK 12:8c7394e2ae7f 694 /**
AjK 12:8c7394e2ae7f 695 * Buffer content counters.
AjK 12:8c7394e2ae7f 696 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 697 */
AjK 12:8c7394e2ae7f 698 volatile int buffer_count[2];
AjK 12:8c7394e2ae7f 699
AjK 12:8c7394e2ae7f 700 /**
AjK 12:8c7394e2ae7f 701 * Buffer overflow.
AjK 12:8c7394e2ae7f 702 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 703 */
AjK 12:8c7394e2ae7f 704 volatile int buffer_overflow[2];
AjK 12:8c7394e2ae7f 705
AjK 12:8c7394e2ae7f 706 /**
AjK 12:8c7394e2ae7f 707 * Auto-detect character.
AjK 12:8c7394e2ae7f 708 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 709 */
AjK 12:8c7394e2ae7f 710 volatile char auto_detect_char;
AjK 12:8c7394e2ae7f 711
AjK 12:8c7394e2ae7f 712 /**
AjK 12:8c7394e2ae7f 713 * Callback system.
AjK 12:8c7394e2ae7f 714 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 715 */
AjK 12:8c7394e2ae7f 716 FunctionPointer _isr[NumOfIrqTypes];
AjK 12:8c7394e2ae7f 717
AjK 12:8c7394e2ae7f 718 /**
AjK 12:8c7394e2ae7f 719 * TX Interrupt Service Routine.
AjK 12:8c7394e2ae7f 720 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 721 */
AjK 12:8c7394e2ae7f 722 void isr_tx(bool doCallback);
AjK 12:8c7394e2ae7f 723
AjK 12:8c7394e2ae7f 724 /**
AjK 12:8c7394e2ae7f 725 * TX Interrupt Service Routine stub version.
AjK 12:8c7394e2ae7f 726 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 727 */
AjK 12:8c7394e2ae7f 728 void isr_tx(void) { isr_tx(true); }
AjK 12:8c7394e2ae7f 729
AjK 12:8c7394e2ae7f 730
AjK 12:8c7394e2ae7f 731 /**
AjK 12:8c7394e2ae7f 732 * RX Interrupt Service Routine.
AjK 12:8c7394e2ae7f 733 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 734 */
AjK 12:8c7394e2ae7f 735 void isr_rx(void);
AjK 12:8c7394e2ae7f 736
AjK 12:8c7394e2ae7f 737 /**
AjK 12:8c7394e2ae7f 738 * Disable the interrupts for this Uart.
AjK 12:8c7394e2ae7f 739 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 740 */
AjK 12:8c7394e2ae7f 741 void disableIrq(void);
AjK 12:8c7394e2ae7f 742
AjK 12:8c7394e2ae7f 743 /**
AjK 12:8c7394e2ae7f 744 * Enable the interrupts for this Uart.
AjK 12:8c7394e2ae7f 745 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 746 */
AjK 12:8c7394e2ae7f 747 void enableIrq(void);
AjK 12:8c7394e2ae7f 748
AjK 12:8c7394e2ae7f 749 /**
AjK 12:8c7394e2ae7f 750 * Get a character from the RX buffer
AjK 12:8c7394e2ae7f 751 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 752 * @param bool True to block (wait for input)
AjK 12:8c7394e2ae7f 753 * @return A byte from the buffer.
AjK 12:8c7394e2ae7f 754 */
AjK 12:8c7394e2ae7f 755 int __getc(bool);
AjK 12:8c7394e2ae7f 756
AjK 12:8c7394e2ae7f 757 /**
AjK 12:8c7394e2ae7f 758 * Put a character from the TX buffer
AjK 12:8c7394e2ae7f 759 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 760 * @param bool True to block (wait for space in the TX buffer if full)
AjK 12:8c7394e2ae7f 761 * @return 0 on success
AjK 12:8c7394e2ae7f 762 */
AjK 12:8c7394e2ae7f 763 int __putc(int c, bool);
AjK 12:8c7394e2ae7f 764
AjK 12:8c7394e2ae7f 765 /**
AjK 12:8c7394e2ae7f 766 * Function: _putc
AjK 12:8c7394e2ae7f 767 * Overloaded virtual function.
AjK 12:8c7394e2ae7f 768 */
AjK 12:8c7394e2ae7f 769 virtual int _putc(int c) { return __putc(c, true); }
AjK 12:8c7394e2ae7f 770
AjK 12:8c7394e2ae7f 771 /**
AjK 12:8c7394e2ae7f 772 * Function: _getc
AjK 12:8c7394e2ae7f 773 * Overloaded virtual function.
AjK 12:8c7394e2ae7f 774 */
AjK 12:8c7394e2ae7f 775 virtual int _getc() { return __getc(true); }
AjK 12:8c7394e2ae7f 776
AjK 12:8c7394e2ae7f 777 /**
AjK 12:8c7394e2ae7f 778 * Function: init
AjK 12:8c7394e2ae7f 779 * Initialize the MODSERIAL object
AjK 12:8c7394e2ae7f 780 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 781 */
AjK 12:8c7394e2ae7f 782 void init(int txSize, int rxSize);
AjK 12:8c7394e2ae7f 783
AjK 12:8c7394e2ae7f 784 /**
AjK 12:8c7394e2ae7f 785 * Function: flushBuffer
AjK 12:8c7394e2ae7f 786 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 787 */
AjK 12:8c7394e2ae7f 788 void flushBuffer(IrqType type);
AjK 12:8c7394e2ae7f 789
AjK 12:8c7394e2ae7f 790 /**
AjK 12:8c7394e2ae7f 791 * Function: resizeBuffer
AjK 12:8c7394e2ae7f 792 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 793 */
AjK 12:8c7394e2ae7f 794 int resizeBuffer(int size, IrqType type = RxIrq, bool memory_check = true);
AjK 12:8c7394e2ae7f 795
AjK 12:8c7394e2ae7f 796 /**
AjK 12:8c7394e2ae7f 797 * Function: downSizeBuffer
AjK 12:8c7394e2ae7f 798 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 799 */
AjK 12:8c7394e2ae7f 800 int downSizeBuffer(int size, IrqType type, bool memory_check);
AjK 12:8c7394e2ae7f 801
AjK 12:8c7394e2ae7f 802 /**
AjK 12:8c7394e2ae7f 803 * Function: upSizeBuffer
AjK 12:8c7394e2ae7f 804 * @ingroup INTERNALS
AjK 12:8c7394e2ae7f 805 */
AjK 12:8c7394e2ae7f 806 int upSizeBuffer(int size, IrqType type, bool memory_check);
AjK 12:8c7394e2ae7f 807
AjK 12:8c7394e2ae7f 808 /*
AjK 12:8c7394e2ae7f 809 * If MODDMA is available the compile in code to handle sending
AjK 12:8c7394e2ae7f 810 * an arbitary char buffer. Note, the parts before teh #ifdef
AjK 12:8c7394e2ae7f 811 * are declared so that MODSERIAL can access then even if MODDMA
AjK 12:8c7394e2ae7f 812 * isn't avaiable. Since MODDMA.h is only available at this point
AjK 12:8c7394e2ae7f 813 * all DMA functionality must be declared inline in the class
AjK 12:8c7394e2ae7f 814 * definition.
AjK 12:8c7394e2ae7f 815 */
AjK 12:8c7394e2ae7f 816 public:
AjK 12:8c7394e2ae7f 817
AjK 12:8c7394e2ae7f 818 int dmaSendChannel;
AjK 12:8c7394e2ae7f 819 void *moddma_p;
AjK 12:8c7394e2ae7f 820
AjK 12:8c7394e2ae7f 821 #ifdef MODDMA_H
AjK 12:8c7394e2ae7f 822
AjK 12:8c7394e2ae7f 823 /**
AjK 12:8c7394e2ae7f 824 * Set the "void pointer" moddma_p to be a pointer to a
AjK 12:8c7394e2ae7f 825 * MODDMA controller class instance. Used to manage the
AjK 12:8c7394e2ae7f 826 * data transfer of DMA configurations.
AjK 12:8c7394e2ae7f 827 *
AjK 12:8c7394e2ae7f 828 * @ingroup API
AjK 12:8c7394e2ae7f 829 * @param p A pointer to "the" instance of MODDMA.
AjK 12:8c7394e2ae7f 830 */
AjK 12:8c7394e2ae7f 831 void MODDMA(MODDMA *p) { moddma_p = p; }
AjK 12:8c7394e2ae7f 832
AjK 12:8c7394e2ae7f 833 /**
AjK 12:8c7394e2ae7f 834 * Send a char buffer to the Uarts TX system
AjK 12:8c7394e2ae7f 835 * using DMA. This blocks regular library
AjK 12:8c7394e2ae7f 836 * sending.
AjK 12:8c7394e2ae7f 837 *
AjK 12:8c7394e2ae7f 838 * @param buffer A char buffer of bytes to send.
AjK 12:8c7394e2ae7f 839 * @param len The length of the buffer to send.
AjK 12:8c7394e2ae7f 840 * @param dmaChannel The DMA channel to use, defaults to 7
AjK 12:8c7394e2ae7f 841 * @return MODDMA::Status MODDMA::ok if all went ok
AjK 12:8c7394e2ae7f 842 */
AjK 12:8c7394e2ae7f 843 int dmaSend(char *buffer, int len, int dmaChannel = 7)
AjK 12:8c7394e2ae7f 844 {
AjK 12:8c7394e2ae7f 845 if (moddma_p == (void *)NULL) return -2;
AjK 12:8c7394e2ae7f 846 class MODDMA *dma = (class MODDMA *)moddma_p;
AjK 12:8c7394e2ae7f 847
AjK 12:8c7394e2ae7f 848 dmaSendChannel = dmaChannel & 0x7;
AjK 12:8c7394e2ae7f 849
AjK 12:8c7394e2ae7f 850 uint32_t conn = MODDMA::UART0_Tx;
AjK 12:8c7394e2ae7f 851 switch(_uidx) {
AjK 12:8c7394e2ae7f 852 case 0: conn = MODDMA::UART0_Tx; break;
AjK 12:8c7394e2ae7f 853 case 1: conn = MODDMA::UART1_Tx; break;
AjK 12:8c7394e2ae7f 854 case 2: conn = MODDMA::UART2_Tx; break;
AjK 12:8c7394e2ae7f 855 case 3: conn = MODDMA::UART3_Tx; break;
AjK 12:8c7394e2ae7f 856 }
AjK 12:8c7394e2ae7f 857
AjK 12:8c7394e2ae7f 858 MODDMA_Config *config = new MODDMA_Config;
AjK 12:8c7394e2ae7f 859 config
AjK 12:8c7394e2ae7f 860 ->channelNum ( (MODDMA::CHANNELS)(dmaSendChannel & 0x7) )
AjK 12:8c7394e2ae7f 861 ->srcMemAddr ( (uint32_t) buffer )
AjK 12:8c7394e2ae7f 862 ->transferSize ( len )
AjK 12:8c7394e2ae7f 863 ->transferType ( MODDMA::m2p )
AjK 12:8c7394e2ae7f 864 ->dstConn ( conn )
AjK 12:8c7394e2ae7f 865 ->attach_tc ( this, &MODSERIAL::dmaSendCallback )
AjK 12:8c7394e2ae7f 866 ->attach_err ( this, &MODSERIAL::dmaSendCallback )
AjK 12:8c7394e2ae7f 867 ; // config end
AjK 12:8c7394e2ae7f 868
AjK 12:8c7394e2ae7f 869 // Setup the configuration.
AjK 12:8c7394e2ae7f 870 if (dma->Setup(config) != MODDMA::Ok) {
AjK 12:8c7394e2ae7f 871 return -1;
AjK 12:8c7394e2ae7f 872 }
AjK 12:8c7394e2ae7f 873
AjK 12:8c7394e2ae7f 874 //dma.Enable( MODDMA::Channel_0 );
AjK 12:8c7394e2ae7f 875 dma->Enable( config->channelNum() );
AjK 12:8c7394e2ae7f 876 return MODDMA::Ok;
AjK 12:8c7394e2ae7f 877 }
AjK 12:8c7394e2ae7f 878
AjK 12:8c7394e2ae7f 879 /**
AjK 12:8c7394e2ae7f 880 * Attach a callback to the DMA completion.
AjK 12:8c7394e2ae7f 881 *
AjK 12:8c7394e2ae7f 882 * @ingroup API
AjK 12:8c7394e2ae7f 883 * @param fptr A function pointer to call
AjK 12:8c7394e2ae7f 884 * @return this
AjK 12:8c7394e2ae7f 885 */
AjK 12:8c7394e2ae7f 886 void attach_dmaSendComplete(void (*fptr)(void)) {
AjK 12:8c7394e2ae7f 887 _isrDmaSendComplete.attach(fptr);
AjK 12:8c7394e2ae7f 888 }
AjK 12:8c7394e2ae7f 889
AjK 12:8c7394e2ae7f 890 /**
AjK 12:8c7394e2ae7f 891 * Attach a callback to the DMA completion.
AjK 12:8c7394e2ae7f 892 *
AjK 12:8c7394e2ae7f 893 * @ingroup API
AjK 12:8c7394e2ae7f 894 * @param tptr A template pointer to the calling object
AjK 12:8c7394e2ae7f 895 * @param mptr A method pointer within the object to call.
AjK 12:8c7394e2ae7f 896 * @return this
AjK 12:8c7394e2ae7f 897 */
AjK 12:8c7394e2ae7f 898 template<typename T>
AjK 12:8c7394e2ae7f 899 void attach_dmaSendComplete(T* tptr, void (T::*mptr)(void)) {
AjK 12:8c7394e2ae7f 900 if((mptr != NULL) && (tptr != NULL)) {
AjK 12:8c7394e2ae7f 901 _isrDmaSendComplete.attach(tptr, mptr);
AjK 12:8c7394e2ae7f 902 }
AjK 12:8c7394e2ae7f 903 }
AjK 12:8c7394e2ae7f 904
AjK 12:8c7394e2ae7f 905 FunctionPointer _isrDmaSendComplete;
AjK 12:8c7394e2ae7f 906
AjK 12:8c7394e2ae7f 907 protected:
AjK 12:8c7394e2ae7f 908 /**
AjK 12:8c7394e2ae7f 909 * Callback for dmaSend().
AjK 12:8c7394e2ae7f 910 */
AjK 12:8c7394e2ae7f 911 void dmaSendCallback(void)
AjK 12:8c7394e2ae7f 912 {
AjK 12:8c7394e2ae7f 913 if (moddma_p == (void *)NULL) return;
AjK 12:8c7394e2ae7f 914 class MODDMA *dma = (class MODDMA *)moddma_p;
AjK 12:8c7394e2ae7f 915
AjK 12:8c7394e2ae7f 916 MODDMA_Config *config = dma->getConfig();
AjK 12:8c7394e2ae7f 917 dma->haltAndWaitChannelComplete( (MODDMA::CHANNELS)config->channelNum());
AjK 12:8c7394e2ae7f 918 dma->Disable( (MODDMA::CHANNELS)config->channelNum() );
AjK 12:8c7394e2ae7f 919 if (dma->irqType() == MODDMA::TcIrq) dma->clearTcIrq();
AjK 12:8c7394e2ae7f 920 if (dma->irqType() == MODDMA::ErrIrq) dma->clearErrIrq();
AjK 12:8c7394e2ae7f 921 dmaSendChannel = -1;
AjK 12:8c7394e2ae7f 922 _isrDmaSendComplete.call();
AjK 12:8c7394e2ae7f 923 }
AjK 12:8c7394e2ae7f 924
AjK 12:8c7394e2ae7f 925 #endif // MODDMA_H
AjK 12:8c7394e2ae7f 926
AjK 12:8c7394e2ae7f 927 };
AjK 12:8c7394e2ae7f 928
AjK 12:8c7394e2ae7f 929 }; // namespace AjK ends
AjK 12:8c7394e2ae7f 930
AjK 12:8c7394e2ae7f 931 using namespace AjK;
AjK 12:8c7394e2ae7f 932
AjK 12:8c7394e2ae7f 933 #endif