поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

ATmega169P датащи(PDF) 182 Page - ATMEL Corporation

номер детали ATmega169P
подробное описание детали  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  393 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega169P датащи(HTML) 182 Page - ATMEL Corporation

Back Button ATmega169P Datasheet HTML 178Page - ATMEL Corporation ATmega169P Datasheet HTML 179Page - ATMEL Corporation ATmega169P Datasheet HTML 180Page - ATMEL Corporation ATmega169P Datasheet HTML 181Page - ATMEL Corporation ATmega169P Datasheet HTML 182Page - ATMEL Corporation ATmega169P Datasheet HTML 183Page - ATMEL Corporation ATmega169P Datasheet HTML 184Page - ATMEL Corporation ATmega169P Datasheet HTML 185Page - ATMEL Corporation ATmega169P Datasheet HTML 186Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 182 / 393 page
background image
182
8018N–AVR–08/09
ATmega169P
Note:
1. ”About Code Examples” on page 10
The receive function example reads all the I/O Registers into the Register File before any com-
putation is done. This gives an optimal receive buffer utilization since the buffer location read will
be free to accept new data as early as possible.
Assembly Code Example(1)
USART_Receive:
; Wait for data to be received
sbis
UCSR0A, RXC0
rjmp
USART_Receive
; Get status and 9th bit, then data from buffer
in
r18, UCSR0A
in
r17, UCSR0B
in
r16, UDR0
; If error, return -1
andi
r18,(1<<FE0)|(1<<DOR0)|(1<<UPE0)
breq
USART_ReceiveNoError
ldi
r17, HIGH(-1)
ldi
r16, LOW(-1)
USART_ReceiveNoError:
; Filter the 9th bit, then return
lsr
r17
andi
r17, 0x01
ret
C Code Example(1)
unsigned int
USART_Receive( void )
{
unsigned char
status, resh, resl;
/* Wait for data to be received */
while
( !(UCSRnA & (1<<RXCn)) )
;
/* Get status and 9th bit, then data */
/* from buffer */
status = UCSR0A;
resh = UCSR0B;
resl = UDR0;
/* If error, return -1 */
if
( status & (1<<FE0)|(1<<DOR0)|(1<<UPE0) )
return
-1;
/* Filter the 9th bit, then return */
resh = (resh >> 1) & 0x01;
return
((resh << 8) | resl);
}



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


датащи скачать

Go To PDF Page


ссылки URL



Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   Ссылка на техническое описание    |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com