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Arduino/build/shared/lib/avrlib/uart.lst
David A. Mellis 9fc5aa63f6 Initial Arduino IDE based on Processing.
2005-08-25 21:06:28 +00:00

790 lines
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1 .file "uart.c"
2 .arch atmega8
3 __SREG__ = 0x3f
4 __SP_H__ = 0x3e
5 __SP_L__ = 0x3d
6 __tmp_reg__ = 0
7 __zero_reg__ = 1
8 .global __do_copy_data
9 .global __do_clear_bss
12 .text
13 .Ltext0:
86 .global uartSetBaudRate
88 uartSetBaudRate:
1:../avrlib/uart.c **** /*! \file uart.c \brief UART driver with buffer support. */
2:../avrlib/uart.c **** // *****************************************************************************
3:../avrlib/uart.c **** //
4:../avrlib/uart.c **** // File Name : 'uart.c'
5:../avrlib/uart.c **** // Title : UART driver with buffer support
6:../avrlib/uart.c **** // Author : Pascal Stang - Copyright (C) 2000-2002
7:../avrlib/uart.c **** // Created : 11/22/2000
8:../avrlib/uart.c **** // Revised : 06/09/2003
9:../avrlib/uart.c **** // Version : 1.3
10:../avrlib/uart.c **** // Target MCU : ATMEL AVR Series
11:../avrlib/uart.c **** // Editor Tabs : 4
12:../avrlib/uart.c **** //
13:../avrlib/uart.c **** // This code is distributed under the GNU Public License
14:../avrlib/uart.c **** // which can be found at http://www.gnu.org/licenses/gpl.txt
15:../avrlib/uart.c **** //
16:../avrlib/uart.c **** // *****************************************************************************
17:../avrlib/uart.c ****
18:../avrlib/uart.c **** #include <avr/io.h>
19:../avrlib/uart.c **** #include <avr/interrupt.h>
20:../avrlib/uart.c **** #include <avr/signal.h>
21:../avrlib/uart.c ****
22:../avrlib/uart.c **** #include "buffer.h"
23:../avrlib/uart.c **** #include "uart.h"
24:../avrlib/uart.c ****
25:../avrlib/uart.c **** // UART global variables
26:../avrlib/uart.c **** // flag variables
27:../avrlib/uart.c **** volatile u08 uartReadyTx; ///< uartReadyTx flag
28:../avrlib/uart.c **** volatile u08 uartBufferedTx; ///< uartBufferedTx flag
29:../avrlib/uart.c **** // receive and transmit buffers
30:../avrlib/uart.c **** cBuffer uartRxBuffer; ///< uart receive buffer
31:../avrlib/uart.c **** cBuffer uartTxBuffer; ///< uart transmit buffer
32:../avrlib/uart.c **** unsigned short uartRxOverflow; ///< receive overflow counter
33:../avrlib/uart.c ****
34:../avrlib/uart.c **** #ifndef UART_BUFFERS_EXTERNAL_RAM
35:../avrlib/uart.c **** // using internal ram,
36:../avrlib/uart.c **** // automatically allocate space in ram for each buffer
37:../avrlib/uart.c **** static char uartRxData[UART_RX_BUFFER_SIZE];
38:../avrlib/uart.c **** static char uartTxData[UART_TX_BUFFER_SIZE];
39:../avrlib/uart.c **** #endif
40:../avrlib/uart.c ****
41:../avrlib/uart.c **** typedef void (*voidFuncPtru08)(unsigned char);
42:../avrlib/uart.c **** volatile static voidFuncPtru08 UartRxFunc;
43:../avrlib/uart.c ****
44:../avrlib/uart.c **** //! enable and initialize the uart
45:../avrlib/uart.c **** void uartInit(void)
46:../avrlib/uart.c **** {
47:../avrlib/uart.c **** // initialize the buffers
48:../avrlib/uart.c **** uartInitBuffers();
49:../avrlib/uart.c **** // initialize user receive handler
50:../avrlib/uart.c **** UartRxFunc = 0;
51:../avrlib/uart.c ****
52:../avrlib/uart.c **** // enable RxD/TxD and interrupts
53:../avrlib/uart.c **** outb(UCR, BV(RXCIE)|BV(TXCIE)|BV(RXEN)|BV(TXEN));
54:../avrlib/uart.c ****
55:../avrlib/uart.c **** // set default baud rate
56:../avrlib/uart.c **** uartSetBaudRate(UART_DEFAULT_BAUD_RATE);
57:../avrlib/uart.c **** // initialize states
58:../avrlib/uart.c **** uartReadyTx = TRUE;
59:../avrlib/uart.c **** uartBufferedTx = FALSE;
60:../avrlib/uart.c **** // clear overflow count
61:../avrlib/uart.c **** uartRxOverflow = 0;
62:../avrlib/uart.c **** // enable interrupts
63:../avrlib/uart.c **** sei();
64:../avrlib/uart.c **** }
65:../avrlib/uart.c ****
66:../avrlib/uart.c **** //! create and initialize the uart transmit and receive buffers
67:../avrlib/uart.c **** void uartInitBuffers(void)
68:../avrlib/uart.c **** {
69:../avrlib/uart.c **** #ifndef UART_BUFFERS_EXTERNAL_RAM
70:../avrlib/uart.c **** // initialize the UART receive buffer
71:../avrlib/uart.c **** bufferInit(&uartRxBuffer, uartRxData, UART_RX_BUFFER_SIZE);
72:../avrlib/uart.c **** // initialize the UART transmit buffer
73:../avrlib/uart.c **** bufferInit(&uartTxBuffer, uartTxData, UART_TX_BUFFER_SIZE);
74:../avrlib/uart.c **** #else
75:../avrlib/uart.c **** // initialize the UART receive buffer
76:../avrlib/uart.c **** bufferInit(&uartRxBuffer, (u08*) UART_RX_BUFFER_ADDR, UART_RX_BUFFER_SIZE);
77:../avrlib/uart.c **** // initialize the UART transmit buffer
78:../avrlib/uart.c **** bufferInit(&uartTxBuffer, (u08*) UART_TX_BUFFER_ADDR, UART_TX_BUFFER_SIZE);
79:../avrlib/uart.c **** #endif
80:../avrlib/uart.c **** }
81:../avrlib/uart.c ****
82:../avrlib/uart.c **** //! redirects received data to a user function
83:../avrlib/uart.c **** void uartSetRxHandler(void (*rx_func)(unsigned char c))
84:../avrlib/uart.c **** {
85:../avrlib/uart.c **** // set the receive interrupt to run the supplied user function
86:../avrlib/uart.c **** UartRxFunc = rx_func;
87:../avrlib/uart.c **** }
88:../avrlib/uart.c ****
89:../avrlib/uart.c **** //! set the uart baud rate
90:../avrlib/uart.c **** void uartSetBaudRate(u32 baudrate)
91:../avrlib/uart.c **** {
90 .LM1:
91 /* prologue: frame size=0 */
92 /* prologue end (size=0) */
93 0000 DC01 movw r26,r24
94 0002 CB01 movw r24,r22
92:../avrlib/uart.c **** // calculate division factor for requested baud rate, and set it
93:../avrlib/uart.c **** u16 bauddiv = ((F_CPU+(baudrate*8L))/(baudrate*16L)-1);
96 .LM2:
97 0004 73E0 ldi r23,3
98 0006 880F 1: lsl r24
99 0008 991F rol r25
100 000a AA1F rol r26
101 000c BB1F rol r27
102 000e 7A95 dec r23
103 0010 D1F7 brne 1b
104 0012 9C01 movw r18,r24
105 0014 AD01 movw r20,r26
106 0016 220F lsl r18
107 0018 331F rol r19
108 001a 441F rol r20
109 001c 551F rol r21
110 001e 8050 subi r24,lo8(-(16000000))
111 0020 9C4D sbci r25,hi8(-(16000000))
112 0022 AB40 sbci r26,hlo8(-(16000000))
113 0024 BF4F sbci r27,hhi8(-(16000000))
114 0026 BC01 movw r22,r24
115 0028 CD01 movw r24,r26
116 002a 00D0 rcall __udivmodsi4
117 002c DA01 movw r26,r20
118 002e C901 movw r24,r18
119 0030 0197 sbiw r24,1
94:../avrlib/uart.c **** outb(UBRRL, bauddiv);
121 .LM3:
122 0032 89B9 out 41-0x20,r24
95:../avrlib/uart.c **** #ifdef UBRRH
96:../avrlib/uart.c **** outb(UBRRH, bauddiv>>8);
124 .LM4:
125 0034 892F mov r24,r25
126 0036 9927 clr r25
127 0038 80BD out 64-0x20,r24
128 /* epilogue: frame size=0 */
129 003a 0895 ret
130 /* epilogue end (size=1) */
131 /* function uartSetBaudRate size 30 (29) */
136 .Lscope0:
139 .global uartInitBuffers
141 uartInitBuffers:
143 .LM5:
144 /* prologue: frame size=0 */
145 /* prologue end (size=0) */
147 .LM6:
148 003c 40E4 ldi r20,lo8(64)
149 003e 50E0 ldi r21,hi8(64)
150 0040 60E0 ldi r22,lo8(uartRxData)
151 0042 70E0 ldi r23,hi8(uartRxData)
152 0044 80E0 ldi r24,lo8(uartRxBuffer)
153 0046 90E0 ldi r25,hi8(uartRxBuffer)
154 0048 00D0 rcall bufferInit
156 .LM7:
157 004a 40E4 ldi r20,lo8(64)
158 004c 50E0 ldi r21,hi8(64)
159 004e 60E0 ldi r22,lo8(uartTxData)
160 0050 70E0 ldi r23,hi8(uartTxData)
161 0052 80E0 ldi r24,lo8(uartTxBuffer)
162 0054 90E0 ldi r25,hi8(uartTxBuffer)
163 0056 00D0 rcall bufferInit
164 /* epilogue: frame size=0 */
165 0058 0895 ret
166 /* epilogue end (size=1) */
167 /* function uartInitBuffers size 15 (14) */
169 .Lscope1:
172 .global uartInit
174 uartInit:
176 .LM8:
177 /* prologue: frame size=0 */
178 /* prologue end (size=0) */
180 .LM9:
181 005a F0DF rcall uartInitBuffers
183 .LM10:
184 005c 1092 0000 sts (UartRxFunc)+1,__zero_reg__
185 0060 1092 0000 sts UartRxFunc,__zero_reg__
187 .LM11:
188 0064 88ED ldi r24,lo8(-40)
189 0066 8AB9 out 42-0x20,r24
191 .LM12:
192 0068 60E8 ldi r22,lo8(9600)
193 006a 75E2 ldi r23,hi8(9600)
194 006c 80E0 ldi r24,hlo8(9600)
195 006e 90E0 ldi r25,hhi8(9600)
196 0070 C7DF rcall uartSetBaudRate
198 .LM13:
199 0072 8FEF ldi r24,lo8(-1)
200 0074 8093 0000 sts uartReadyTx,r24
202 .LM14:
203 0078 1092 0000 sts uartBufferedTx,__zero_reg__
205 .LM15:
206 007c 1092 0000 sts (uartRxOverflow)+1,__zero_reg__
207 0080 1092 0000 sts uartRxOverflow,__zero_reg__
209 .LM16:
210 /* #APP */
211 0084 7894 sei
212 /* #NOAPP */
213 /* epilogue: frame size=0 */
214 0086 0895 ret
215 /* epilogue end (size=1) */
216 /* function uartInit size 24 (23) */
218 .Lscope2:
222 .global uartSetRxHandler
224 uartSetRxHandler:
226 .LM17:
227 /* prologue: frame size=0 */
228 /* prologue end (size=0) */
230 .LM18:
231 0088 9093 0000 sts (UartRxFunc)+1,r25
232 008c 8093 0000 sts UartRxFunc,r24
233 /* epilogue: frame size=0 */
234 0090 0895 ret
235 /* epilogue end (size=1) */
236 /* function uartSetRxHandler size 5 (4) */
238 .Lscope3:
241 .global uartGetRxBuffer
243 uartGetRxBuffer:
97:../avrlib/uart.c **** #endif
98:../avrlib/uart.c **** }
99:../avrlib/uart.c ****
100:../avrlib/uart.c **** //! returns the receive buffer structure
101:../avrlib/uart.c **** cBuffer* uartGetRxBuffer(void)
102:../avrlib/uart.c **** {
245 .LM19:
246 /* prologue: frame size=0 */
247 /* prologue end (size=0) */
103:../avrlib/uart.c **** // return rx buffer pointer
104:../avrlib/uart.c **** return &uartRxBuffer;
105:../avrlib/uart.c **** }
249 .LM20:
250 0092 80E0 ldi r24,lo8(uartRxBuffer)
251 0094 90E0 ldi r25,hi8(uartRxBuffer)
252 /* epilogue: frame size=0 */
253 0096 0895 ret
254 /* epilogue end (size=1) */
255 /* function uartGetRxBuffer size 3 (2) */
257 .Lscope4:
260 .global uartGetTxBuffer
262 uartGetTxBuffer:
106:../avrlib/uart.c ****
107:../avrlib/uart.c **** //! returns the transmit buffer structure
108:../avrlib/uart.c **** cBuffer* uartGetTxBuffer(void)
109:../avrlib/uart.c **** {
264 .LM21:
265 /* prologue: frame size=0 */
266 /* prologue end (size=0) */
110:../avrlib/uart.c **** // return tx buffer pointer
111:../avrlib/uart.c **** return &uartTxBuffer;
112:../avrlib/uart.c **** }
268 .LM22:
269 0098 80E0 ldi r24,lo8(uartTxBuffer)
270 009a 90E0 ldi r25,hi8(uartTxBuffer)
271 /* epilogue: frame size=0 */
272 009c 0895 ret
273 /* epilogue end (size=1) */
274 /* function uartGetTxBuffer size 3 (2) */
276 .Lscope5:
280 .global uartSendByte
282 uartSendByte:
113:../avrlib/uart.c ****
114:../avrlib/uart.c **** //! transmits a byte over the uart
115:../avrlib/uart.c **** void uartSendByte(u08 txData)
116:../avrlib/uart.c **** {
284 .LM23:
285 /* prologue: frame size=0 */
286 /* prologue end (size=0) */
287 009e 982F mov r25,r24
288 .L8:
117:../avrlib/uart.c **** // wait for the transmitter to be ready
118:../avrlib/uart.c **** while(!uartReadyTx);
290 .LM24:
291 00a0 8091 0000 lds r24,uartReadyTx
292 00a4 8823 tst r24
293 00a6 E1F3 breq .L8
119:../avrlib/uart.c **** // send byte
120:../avrlib/uart.c **** outb(UDR, txData);
295 .LM25:
296 00a8 9CB9 out 44-0x20,r25
121:../avrlib/uart.c **** // set ready state to FALSE
122:../avrlib/uart.c **** uartReadyTx = FALSE;
298 .LM26:
299 00aa 1092 0000 sts uartReadyTx,__zero_reg__
300 /* epilogue: frame size=0 */
301 00ae 0895 ret
302 /* epilogue end (size=1) */
303 /* function uartSendByte size 9 (8) */
305 .Lscope6:
309 .global uartReceiveByte
311 uartReceiveByte:
123:../avrlib/uart.c **** }
124:../avrlib/uart.c ****
125:../avrlib/uart.c **** //! gets a single byte from the uart receive buffer (getchar-style)
126:../avrlib/uart.c **** int uartGetByte(void)
127:../avrlib/uart.c **** {
128:../avrlib/uart.c **** u08 c;
129:../avrlib/uart.c **** if(uartReceiveByte(&c))
130:../avrlib/uart.c **** return c;
131:../avrlib/uart.c **** else
132:../avrlib/uart.c **** return -1;
133:../avrlib/uart.c **** }
134:../avrlib/uart.c ****
135:../avrlib/uart.c **** //! gets a byte (if available) from the uart receive buffer
136:../avrlib/uart.c **** u08 uartReceiveByte(u08* rxData)
137:../avrlib/uart.c **** {
313 .LM27:
314 /* prologue: frame size=0 */
315 00b0 CF93 push r28
316 00b2 DF93 push r29
317 /* prologue end (size=2) */
318 00b4 EC01 movw r28,r24
138:../avrlib/uart.c **** // make sure we have a receive buffer
139:../avrlib/uart.c **** if(uartRxBuffer.size)
320 .LM28:
321 00b6 8091 0000 lds r24,uartRxBuffer+2
322 00ba 9091 0000 lds r25,(uartRxBuffer+2)+1
323 00be 0097 sbiw r24,0
324 00c0 61F0 breq .L11
140:../avrlib/uart.c **** {
141:../avrlib/uart.c **** // make sure we have data
142:../avrlib/uart.c **** if(uartRxBuffer.datalength)
326 .LM29:
327 00c2 8091 0000 lds r24,uartRxBuffer+4
328 00c6 9091 0000 lds r25,(uartRxBuffer+4)+1
329 00ca 0097 sbiw r24,0
330 00cc 31F0 breq .L11
143:../avrlib/uart.c **** {
144:../avrlib/uart.c **** // get byte from beginning of buffer
145:../avrlib/uart.c **** *rxData = bufferGetFromFront(&uartRxBuffer);
332 .LM30:
333 00ce 80E0 ldi r24,lo8(uartRxBuffer)
334 00d0 90E0 ldi r25,hi8(uartRxBuffer)
335 00d2 00D0 rcall bufferGetFromFront
336 00d4 8883 st Y,r24
146:../avrlib/uart.c **** return TRUE;
338 .LM31:
339 00d6 8FEF ldi r24,lo8(255)
340 00d8 90E0 ldi r25,hi8(255)
341 .L11:
342 /* epilogue: frame size=0 */
343 00da DF91 pop r29
344 00dc CF91 pop r28
345 00de 0895 ret
346 /* epilogue end (size=3) */
347 /* function uartReceiveByte size 24 (19) */
349 .Lscope7:
352 .global uartGetByte
354 uartGetByte:
356 .LM32:
357 /* prologue: frame size=1 */
358 00e0 CF93 push r28
359 00e2 DF93 push r29
360 00e4 CDB7 in r28,__SP_L__
361 00e6 DEB7 in r29,__SP_H__
362 00e8 2197 sbiw r28,1
363 00ea 0FB6 in __tmp_reg__,__SREG__
364 00ec F894 cli
365 00ee DEBF out __SP_H__,r29
366 00f0 0FBE out __SREG__,__tmp_reg__
367 00f2 CDBF out __SP_L__,r28
368 /* prologue end (size=10) */
370 .LM33:
371 00f4 CE01 movw r24,r28
372 00f6 0196 adiw r24,1
373 00f8 DBDF rcall uartReceiveByte
374 00fa 8823 tst r24
375 00fc 19F0 breq .L17
377 .LM34:
378 00fe 8981 ldd r24,Y+1
379 0100 9927 clr r25
380 0102 02C0 rjmp .L16
381 .L17:
383 .LM35:
384 0104 8FEF ldi r24,lo8(-1)
385 0106 9FEF ldi r25,hi8(-1)
386 .L16:
387 /* epilogue: frame size=1 */
388 0108 2196 adiw r28,1
389 010a 0FB6 in __tmp_reg__,__SREG__
390 010c F894 cli
391 010e DEBF out __SP_H__,r29
392 0110 0FBE out __SREG__,__tmp_reg__
393 0112 CDBF out __SP_L__,r28
394 0114 DF91 pop r29
395 0116 CF91 pop r28
396 0118 0895 ret
397 /* epilogue end (size=9) */
398 /* function uartGetByte size 29 (10) */
403 .Lscope8:
406 .global uartFlushReceiveBuffer
408 uartFlushReceiveBuffer:
147:../avrlib/uart.c **** }
148:../avrlib/uart.c **** else
149:../avrlib/uart.c **** {
150:../avrlib/uart.c **** // no data
151:../avrlib/uart.c **** return FALSE;
152:../avrlib/uart.c **** }
153:../avrlib/uart.c **** }
154:../avrlib/uart.c **** else
155:../avrlib/uart.c **** {
156:../avrlib/uart.c **** // no buffer
157:../avrlib/uart.c **** return FALSE;
158:../avrlib/uart.c **** }
159:../avrlib/uart.c **** }
160:../avrlib/uart.c ****
161:../avrlib/uart.c **** //! flush all data out of the receive buffer
162:../avrlib/uart.c **** void uartFlushReceiveBuffer(void)
163:../avrlib/uart.c **** {
410 .LM36:
411 /* prologue: frame size=0 */
412 /* prologue end (size=0) */
164:../avrlib/uart.c **** // flush all data from receive buffer
165:../avrlib/uart.c **** //bufferFlush(&uartRxBuffer);
166:../avrlib/uart.c **** // same effect as above
167:../avrlib/uart.c **** uartRxBuffer.datalength = 0;
414 .LM37:
415 011a 1092 0000 sts (uartRxBuffer+4)+1,__zero_reg__
416 011e 1092 0000 sts uartRxBuffer+4,__zero_reg__
417 /* epilogue: frame size=0 */
418 0122 0895 ret
419 /* epilogue end (size=1) */
420 /* function uartFlushReceiveBuffer size 5 (4) */
422 .Lscope9:
425 .global uartReceiveBufferIsEmpty
427 uartReceiveBufferIsEmpty:
168:../avrlib/uart.c **** }
169:../avrlib/uart.c ****
170:../avrlib/uart.c **** //! return true if uart receive buffer is empty
171:../avrlib/uart.c **** u08 uartReceiveBufferIsEmpty(void)
172:../avrlib/uart.c **** {
429 .LM38:
430 /* prologue: frame size=0 */
431 /* prologue end (size=0) */
173:../avrlib/uart.c **** if(uartRxBuffer.datalength == 0)
433 .LM39:
434 0124 8091 0000 lds r24,uartRxBuffer+4
435 0128 9091 0000 lds r25,(uartRxBuffer+4)+1
436 012c 892B or r24,r25
437 012e 19F4 brne .L21
174:../avrlib/uart.c **** {
175:../avrlib/uart.c **** return TRUE;
439 .LM40:
440 0130 8FEF ldi r24,lo8(255)
441 0132 90E0 ldi r25,hi8(255)
442 0134 0895 ret
443 .L21:
176:../avrlib/uart.c **** }
177:../avrlib/uart.c **** else
178:../avrlib/uart.c **** {
179:../avrlib/uart.c **** return FALSE;
445 .LM41:
446 0136 80E0 ldi r24,lo8(0)
447 0138 90E0 ldi r25,hi8(0)
180:../avrlib/uart.c **** }
181:../avrlib/uart.c **** }
449 .LM42:
450 013a 0895 ret
451 /* epilogue: frame size=0 */
452 013c 0895 ret
453 /* epilogue end (size=1) */
454 /* function uartReceiveBufferIsEmpty size 13 (12) */
456 .Lscope10:
460 .global uartAddToTxBuffer
462 uartAddToTxBuffer:
182:../avrlib/uart.c ****
183:../avrlib/uart.c **** //! add byte to end of uart Tx buffer
184:../avrlib/uart.c **** void uartAddToTxBuffer(u08 data)
185:../avrlib/uart.c **** {
464 .LM43:
465 /* prologue: frame size=0 */
466 /* prologue end (size=0) */
186:../avrlib/uart.c **** // add data byte to the end of the tx buffer
187:../avrlib/uart.c **** bufferAddToEnd(&uartTxBuffer, data);
468 .LM44:
469 013e 682F mov r22,r24
470 0140 80E0 ldi r24,lo8(uartTxBuffer)
471 0142 90E0 ldi r25,hi8(uartTxBuffer)
472 0144 00D0 rcall bufferAddToEnd
473 /* epilogue: frame size=0 */
474 0146 0895 ret
475 /* epilogue end (size=1) */
476 /* function uartAddToTxBuffer size 5 (4) */
478 .Lscope11:
481 .global uartSendTxBuffer
483 uartSendTxBuffer:
188:../avrlib/uart.c **** }
189:../avrlib/uart.c ****
190:../avrlib/uart.c **** //! start transmission of the current uart Tx buffer contents
191:../avrlib/uart.c **** void uartSendTxBuffer(void)
192:../avrlib/uart.c **** {
485 .LM45:
486 /* prologue: frame size=0 */
487 /* prologue end (size=0) */
193:../avrlib/uart.c **** // turn on buffered transmit
194:../avrlib/uart.c **** uartBufferedTx = TRUE;
489 .LM46:
490 0148 8FEF ldi r24,lo8(-1)
491 014a 8093 0000 sts uartBufferedTx,r24
195:../avrlib/uart.c **** // send the first byte to get things going by interrupts
196:../avrlib/uart.c **** uartSendByte(bufferGetFromFront(&uartTxBuffer));
493 .LM47:
494 014e 80E0 ldi r24,lo8(uartTxBuffer)
495 0150 90E0 ldi r25,hi8(uartTxBuffer)
496 0152 00D0 rcall bufferGetFromFront
497 0154 A4DF rcall uartSendByte
498 /* epilogue: frame size=0 */
499 0156 0895 ret
500 /* epilogue end (size=1) */
501 /* function uartSendTxBuffer size 8 (7) */
503 .Lscope12:
506 .global __vector_13
508 __vector_13:
197:../avrlib/uart.c **** }
198:../avrlib/uart.c **** /*
199:../avrlib/uart.c **** //! transmit nBytes from buffer out the uart
200:../avrlib/uart.c **** u08 uartSendBuffer(char *buffer, u16 nBytes)
201:../avrlib/uart.c **** {
202:../avrlib/uart.c **** register u08 first;
203:../avrlib/uart.c **** register u16 i;
204:../avrlib/uart.c ****
205:../avrlib/uart.c **** // check if there's space (and that we have any bytes to send at all)
206:../avrlib/uart.c **** if((uartTxBuffer.datalength + nBytes < uartTxBuffer.size) && nBytes)
207:../avrlib/uart.c **** {
208:../avrlib/uart.c **** // grab first character
209:../avrlib/uart.c **** first = *buffer++;
210:../avrlib/uart.c **** // copy user buffer to uart transmit buffer
211:../avrlib/uart.c **** for(i = 0; i < nBytes-1; i++)
212:../avrlib/uart.c **** {
213:../avrlib/uart.c **** // put data bytes at end of buffer
214:../avrlib/uart.c **** bufferAddToEnd(&uartTxBuffer, *buffer++);
215:../avrlib/uart.c **** }
216:../avrlib/uart.c ****
217:../avrlib/uart.c **** // send the first byte to get things going by interrupts
218:../avrlib/uart.c **** uartBufferedTx = TRUE;
219:../avrlib/uart.c **** uartSendByte(first);
220:../avrlib/uart.c **** // return success
221:../avrlib/uart.c **** return TRUE;
222:../avrlib/uart.c **** }
223:../avrlib/uart.c **** else
224:../avrlib/uart.c **** {
225:../avrlib/uart.c **** // return failure
226:../avrlib/uart.c **** return FALSE;
227:../avrlib/uart.c **** }
228:../avrlib/uart.c **** }
229:../avrlib/uart.c **** */
230:../avrlib/uart.c **** //! UART Transmit Complete Interrupt Handler
231:../avrlib/uart.c **** UART_INTERRUPT_HANDLER(SIG_UART_TRANS)
232:../avrlib/uart.c **** {
510 .LM48:
511 /* prologue: frame size=0 */
512 0158 1F92 push __zero_reg__
513 015a 0F92 push __tmp_reg__
514 015c 0FB6 in __tmp_reg__,__SREG__
515 015e 0F92 push __tmp_reg__
516 0160 1124 clr __zero_reg__
517 0162 2F93 push r18
518 0164 3F93 push r19
519 0166 4F93 push r20
520 0168 5F93 push r21
521 016a 6F93 push r22
522 016c 7F93 push r23
523 016e 8F93 push r24
524 0170 9F93 push r25
525 0172 AF93 push r26
526 0174 BF93 push r27
527 0176 EF93 push r30
528 0178 FF93 push r31
529 /* prologue end (size=17) */
233:../avrlib/uart.c **** // check if buffered tx is enabled
234:../avrlib/uart.c **** if(uartBufferedTx)
531 .LM49:
532 017a 8091 0000 lds r24,uartBufferedTx
533 017e 8823 tst r24
534 0180 69F0 breq .L26
235:../avrlib/uart.c **** {
236:../avrlib/uart.c **** // check if there's data left in the buffer
237:../avrlib/uart.c **** if(uartTxBuffer.datalength)
536 .LM50:
537 0182 8091 0000 lds r24,uartTxBuffer+4
538 0186 9091 0000 lds r25,(uartTxBuffer+4)+1
539 018a 892B or r24,r25
540 018c 29F0 breq .L27
238:../avrlib/uart.c **** {
239:../avrlib/uart.c **** // send byte from top of buffer
240:../avrlib/uart.c **** outb(UDR, bufferGetFromFront(&uartTxBuffer));
542 .LM51:
543 018e 80E0 ldi r24,lo8(uartTxBuffer)
544 0190 90E0 ldi r25,hi8(uartTxBuffer)
545 0192 00D0 rcall bufferGetFromFront
546 0194 8CB9 out 44-0x20,r24
547 0196 05C0 rjmp .L25
548 .L27:
241:../avrlib/uart.c **** }
242:../avrlib/uart.c **** else
243:../avrlib/uart.c **** {
244:../avrlib/uart.c **** // no data left
245:../avrlib/uart.c **** uartBufferedTx = FALSE;
550 .LM52:
551 0198 1092 0000 sts uartBufferedTx,__zero_reg__
552 .L26:
246:../avrlib/uart.c **** // return to ready state
247:../avrlib/uart.c **** uartReadyTx = TRUE;
248:../avrlib/uart.c **** }
249:../avrlib/uart.c **** }
250:../avrlib/uart.c **** else
251:../avrlib/uart.c **** {
252:../avrlib/uart.c **** // we're using single-byte tx mode
253:../avrlib/uart.c **** // indicate transmit complete, back to ready
254:../avrlib/uart.c **** uartReadyTx = TRUE;
554 .LM53:
555 019c 8FEF ldi r24,lo8(-1)
556 019e 8093 0000 sts uartReadyTx,r24
557 .L25:
558 /* epilogue: frame size=0 */
559 01a2 FF91 pop r31
560 01a4 EF91 pop r30
561 01a6 BF91 pop r27
562 01a8 AF91 pop r26
563 01aa 9F91 pop r25
564 01ac 8F91 pop r24
565 01ae 7F91 pop r23
566 01b0 6F91 pop r22
567 01b2 5F91 pop r21
568 01b4 4F91 pop r20
569 01b6 3F91 pop r19
570 01b8 2F91 pop r18
571 01ba 0F90 pop __tmp_reg__
572 01bc 0FBE out __SREG__,__tmp_reg__
573 01be 0F90 pop __tmp_reg__
574 01c0 1F90 pop __zero_reg__
575 01c2 1895 reti
576 /* epilogue end (size=17) */
577 /* function __vector_13 size 54 (20) */
579 .Lscope13:
582 .global __vector_11
584 __vector_11:
255:../avrlib/uart.c **** }
256:../avrlib/uart.c **** }
257:../avrlib/uart.c ****
258:../avrlib/uart.c **** //! UART Receive Complete Interrupt Handler
259:../avrlib/uart.c **** UART_INTERRUPT_HANDLER(SIG_UART_RECV)
260:../avrlib/uart.c **** {
586 .LM54:
587 /* prologue: frame size=0 */
588 01c4 1F92 push __zero_reg__
589 01c6 0F92 push __tmp_reg__
590 01c8 0FB6 in __tmp_reg__,__SREG__
591 01ca 0F92 push __tmp_reg__
592 01cc 1124 clr __zero_reg__
593 01ce 2F93 push r18
594 01d0 3F93 push r19
595 01d2 4F93 push r20
596 01d4 5F93 push r21
597 01d6 6F93 push r22
598 01d8 7F93 push r23
599 01da 8F93 push r24
600 01dc 9F93 push r25
601 01de AF93 push r26
602 01e0 BF93 push r27
603 01e2 EF93 push r30
604 01e4 FF93 push r31
605 /* prologue end (size=17) */
261:../avrlib/uart.c **** u08 c;
262:../avrlib/uart.c ****
263:../avrlib/uart.c **** // get received char
264:../avrlib/uart.c **** c = inb(UDR);
607 .LM55:
608 01e6 6CB1 in r22,44-0x20
265:../avrlib/uart.c ****
266:../avrlib/uart.c **** // if there's a user function to handle this receive event
267:../avrlib/uart.c **** if(UartRxFunc)
610 .LM56:
611 01e8 8091 0000 lds r24,UartRxFunc
612 01ec 9091 0000 lds r25,(UartRxFunc)+1
613 01f0 892B or r24,r25
614 01f2 39F0 breq .L31
268:../avrlib/uart.c **** {
269:../avrlib/uart.c **** // call it and pass the received data
270:../avrlib/uart.c **** UartRxFunc(c);
616 .LM57:
617 01f4 E091 0000 lds r30,UartRxFunc
618 01f8 F091 0000 lds r31,(UartRxFunc)+1
619 01fc 862F mov r24,r22
620 01fe 0995 icall
621 0200 0EC0 rjmp .L30
622 .L31:
271:../avrlib/uart.c **** }
272:../avrlib/uart.c **** else
273:../avrlib/uart.c **** {
274:../avrlib/uart.c **** // otherwise do default processing
275:../avrlib/uart.c **** // put received char in buffer
276:../avrlib/uart.c **** // check if there's space
277:../avrlib/uart.c **** if( !bufferAddToEnd(&uartRxBuffer, c) )
624 .LM58:
625 0202 80E0 ldi r24,lo8(uartRxBuffer)
626 0204 90E0 ldi r25,hi8(uartRxBuffer)
627 0206 00D0 rcall bufferAddToEnd
628 0208 8823 tst r24
629 020a 49F4 brne .L30
278:../avrlib/uart.c **** {
279:../avrlib/uart.c **** // no space in buffer
280:../avrlib/uart.c **** // count overflow
281:../avrlib/uart.c **** uartRxOverflow++;
631 .LM59:
632 020c 8091 0000 lds r24,uartRxOverflow
633 0210 9091 0000 lds r25,(uartRxOverflow)+1
634 0214 0196 adiw r24,1
635 0216 9093 0000 sts (uartRxOverflow)+1,r25
636 021a 8093 0000 sts uartRxOverflow,r24
637 .L30:
638 /* epilogue: frame size=0 */
639 021e FF91 pop r31
640 0220 EF91 pop r30
641 0222 BF91 pop r27
642 0224 AF91 pop r26
643 0226 9F91 pop r25
644 0228 8F91 pop r24
645 022a 7F91 pop r23
646 022c 6F91 pop r22
647 022e 5F91 pop r21
648 0230 4F91 pop r20
649 0232 3F91 pop r19
650 0234 2F91 pop r18
651 0236 0F90 pop __tmp_reg__
652 0238 0FBE out __SREG__,__tmp_reg__
653 023a 0F90 pop __tmp_reg__
654 023c 1F90 pop __zero_reg__
655 023e 1895 reti
656 /* epilogue end (size=17) */
657 /* function __vector_11 size 62 (28) */
662 .Lscope14:
664 .comm uartReadyTx,1,1
665 .comm uartBufferedTx,1,1
666 .comm uartRxBuffer,8,1
667 .comm uartTxBuffer,8,1
668 .comm uartRxOverflow,2,1
669 .lcomm uartRxData,64
670 .lcomm uartTxData,64
671 .lcomm UartRxFunc,2
680 .text
682 Letext:
683 /* File "../avrlib/uart.c": code 289 = 0x0121 ( 186), prologues 46, epilogues 57 */
DEFINED SYMBOLS
*ABS*:00000000 uart.c
*ABS*:0000003f __SREG__
*ABS*:0000003e __SP_H__
*ABS*:0000003d __SP_L__
*ABS*:00000000 __tmp_reg__
*ABS*:00000001 __zero_reg__
/var/tmp//cclgUhYv.s:88 .text:00000000 uartSetBaudRate
/var/tmp//cclgUhYv.s:141 .text:0000003c uartInitBuffers
.bss:00000000 uartRxData
*COM*:00000008 uartRxBuffer
/var/tmp//cclgUhYv.s:669 .bss:00000040 uartTxData
*COM*:00000008 uartTxBuffer
/var/tmp//cclgUhYv.s:174 .text:0000005a uartInit
/var/tmp//cclgUhYv.s:670 .bss:00000080 UartRxFunc
*COM*:00000001 uartReadyTx
*COM*:00000001 uartBufferedTx
*COM*:00000002 uartRxOverflow
/var/tmp//cclgUhYv.s:224 .text:00000088 uartSetRxHandler
/var/tmp//cclgUhYv.s:243 .text:00000092 uartGetRxBuffer
/var/tmp//cclgUhYv.s:262 .text:00000098 uartGetTxBuffer
/var/tmp//cclgUhYv.s:282 .text:0000009e uartSendByte
/var/tmp//cclgUhYv.s:311 .text:000000b0 uartReceiveByte
/var/tmp//cclgUhYv.s:354 .text:000000e0 uartGetByte
/var/tmp//cclgUhYv.s:408 .text:0000011a uartFlushReceiveBuffer
/var/tmp//cclgUhYv.s:427 .text:00000124 uartReceiveBufferIsEmpty
/var/tmp//cclgUhYv.s:462 .text:0000013e uartAddToTxBuffer
/var/tmp//cclgUhYv.s:483 .text:00000148 uartSendTxBuffer
/var/tmp//cclgUhYv.s:508 .text:00000158 __vector_13
/var/tmp//cclgUhYv.s:584 .text:000001c4 __vector_11
/var/tmp//cclgUhYv.s:682 .text:00000240 Letext
UNDEFINED SYMBOLS
__do_copy_data
__do_clear_bss
__udivmodsi4
bufferInit
bufferGetFromFront
bufferAddToEnd
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