Á¦¸ñ 780BC serial. ¼Û½Å ºÒ·®ÀԴϱî?
ÀÛ¼ºÀÚ ¼ÛÀÍȯ
À̸ÞÀÏ dlrghks411@naver.com
ÀÛ¼ºÀÏÀÚ 2018-06-01
Á¶È¸¼ö 8076
Ãßõ¼ö 2792
 

PE1¿¡¼­ ³ª°¡´Â TX ½ÅÈ£¼±ÀÌ ºí·çÅõ½º ¸ðµâ 4.1(¸ðµ¨¸í 780BC_serial) ÀÇ RX¿¡ ²È¾Æ³ù°í¿ä
ÀÌ È¸»ç¿¡¼­ Á¦°øÇÏ´Â ¾ÛÀ» »ç¿ëÇÏ°í Àִµ¥ ¾Û À̸§Àº BLE_Serial ÀÔ´Ï´Ù.


Àǹ®À» °¡Áö½Ç ¿©·¯°¡Áö ȯ°æ ¿É¼Ç ¸»Çص帮°Ú½À´Ï´Ù.

1.º¸·¹ÀÌÆ® ÀÏÄ¡½ÃÄ×½À´Ï´Ù.
2.Æи®Æ¼ ºñÆ® µÑ´Ù ¾È¾²µµ·Ï Çß½À´Ï´Ù
3. stop bit ´Â 1µÑ´Ù 1ºñÆ® »ç¿ëÇϵµ·Ï Çß½À´Ï´Ù.
4.ºí·çÅõ½ºÀÇ »óÅ´ Central°ú PeripheralÀÌ Àִµ¥ Peripheral·Î Çß½À´Ï´Ù.

¼ö½ÅÀº Àߵ˴ϴÙ. ¼ö½Åȯ°æÀº Atmega128ÀÇ PE0 Æ÷Æ®¸¦ ºí·çÅõ½ºÀÇ TX¿Í ¿¬°áÇß½À´Ï´Ù.
°áÁ¤ÀûÀ¸·Î ½º¸¶Æ®Æù¿¡¼­ -> ºí·çÅõ½º ¸ðµâ·Î ¹®ÀÚ Àü¼Û -> ºí·çÅõ½º°¡  ATmega128A·Î ¹®ÀÚ ÀÚµ¿À¸·Î ³Ö¾îÁÖ´ÂÁö ¾Æ´ÑÁö ¸ð¸£°ÚÁö¸¸ Atmega128ÀÌ UDR0À» Àо ¹®ÀÚ¿¡ µû¶ó LED on/off ±â´É »ç¿ë ½ÇÇè È®ÀÎ.

Áï ¼ö½ÅÀº ¼º°øÇß½À´Ï´Ù.

ÇÏÁö¸¸ ¼Û½Å ½ÇÇèÀÌ ¾ÈµÇ³×¿ä.


UDR0¿¡ µ¥ÀÌÅ͸¦ ³ÖÀ¸¸é ¾Ë¾Æ¼­ ºí·çÅõ½º ¸ðµâ·Î Àü¼ÛµÇ°í

ÀÌ ºí·çÅõ½º ¸ðµâ ¶ÇÇÑ ¾Ë¾Æ¼­ ÀڽŰú ¿¬°áµÈ ½º¸¶Æ®ÆùÀ¸·Î Àü¼Û½ÃÄÑÁִ°Š¾Æ´Ñ°¡¿ä?




#define F_CPU 16000000UL

#include<avr/io.h>
#include<avr/interrupt.h>
#include<util/delay.h>
#include<math.h>

void USART_Transmit(unsigned char tx_data);


int main()
{  

//UART
UCSR0A = 0x00;
UCSR0B = (1<<TXEN0);
UCSR0C = (3<<UCSZ00);  
UBRR0H = 0;
UBRR0L = 103; //9600

sei();

while(1)
{
USART_Transmit('g');

_delay_ms(100);

}

}




void USART_Transmit(unsigned char tx_data)
{
while(!(UCSR0A & 0x20));
UDR0 = tx_data;
}


------------------------------------------------------------------------------

Ÿ Ä«Æä¿¡ ¿Ã·È´ø Áú¹®À¸·Î ¿Ã·Á³õÀº »óÅÂÀÇ ±ÛÀÔ´Ï´Ù.

Àú´Â ´ëÇлýÀÌ°í ±Í»çÀÇ ºí·çÅõ½º ¸ðµâÀ» »ç¿ëÇÏ¿© µå·ÐÀ» Á¦ÀÛÇÏ·Á ÇÕ´Ï´Ù.

±×·±µ¥ ½º¸¶Æ®Æù¿¡¼­ Atmega128·Î º¸³»¼­ ¹Þ´Â ¼ö½ÅÀº ¼º°øÇßÀ¸³ª

Atmega128¿¡¼­ ½º¸¶Æ®ÆùÀ¸·Î º¸³»¼­ ¹Þ´Â ¼Û½ÅÀº ¾ÈµË´Ï´Ù.

¾Û °¡À̵忡¼­ º»´ë·Î¶ó¸é Rx : 'ÀÓÀÇÀÇ ¹®ÀÚ¿­' ÀÌ·±½ÄÀ¸·Î ¿Í¾ß ÇÏ´Â°Í ¾Æ´Ñ°¡¿ä?

Á¦°¡ ±Ã±ÝÇÑ°ÍÀº

ÇöÀç ¼¼ÆÃÀÌ ÀÌ·¯Çѵ¥..

1) ¸¶ÀÌÄÄ°ú ºí·çÅõ½º ¸ðµâÀÇ uart Åë½ÅÀÇ º¸·¹ÀÌÆ® 9600, Æи®Æ¼ X, ½ºÅ¾ ºñÆ® 1 »óÅÂÀÔ´Ï´Ù.
2) ºí·çÅõ½º ¸ðµâÀº peripheral ¸ðµåÀÔ´Ï´Ù.

Àú ÄÚµå´Â UART Åë½ÅÀ¸·Î ¸¶ÀÌÄÄÀÌ g ¶ó´Â ¹®ÀÚ¸¦ 100ms ¸¶´Ù ºí·çÅõ½ºÀÇ Rx ÇÉ¿¡ °è¼Ó ³Ö¾îÁÖ°í ÀÖ´Â ³»¿ëÀÔ´Ï´Ù.

ºí·çÅõ½º ¸ðµâ(peripheral) <-> ½º¸¶Æ®Æù

ÀÌ·¸°Ô ¿¬°áÀ» ÇÏ°í ³ª¸é ºí·çÅõ½º ¸ðµâÀÇ RXÇÉ¿¡ g¶ó´Â ¹®ÀÚ¸¦ ³ÖÀ¸¸é ÀÚµ¿À¸·Î ½º¸¶Æ®ÆùÀ¸·Î g¶ó´Â ¹®ÀÚ¸¦ Àü¼ÛÇØÁÖ´Â °Ô ¾Æ´Ñ°¡¿ä? Áö±Ý ÀÌ°É ÇÏ°í ½Í½À´Ï´Ù.
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