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| Search found 33 matches |
| Author | Message |
|---|---|
 Topic: RS485 half duplex communication |
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| funmix Replies: 17 Views: 26176 |
 Forum: General CCS C Discussion Posted: Mon Apr 30, 2007 7:47 am Subject: RS485 half duplex communication |
| By the way, your code cannot be compiled. There are errors in slave and master main loop. Can you please verify again?
Thanks for your sharing code. |
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| Topic: RS485 half duplex communication |
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| funmix Replies: 17 Views: 26176 |
Forum: General CCS C Discussion Posted: Mon Apr 30, 2007 7:35 am Subject: RS485 half duplex communication |
| how you verify that the two PICs able to communicate with each other?
What ICs you use for communication? I hope your code is working. I am testing it anyway, thanks for your code. |
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| Topic: Some weird character in rs232 |
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| funmix Replies: 4 Views: 4604 |
Forum: General CCS C Discussion Posted: Sun Apr 29, 2007 12:25 am Subject: Some weird character in rs232 |
| I solved the problem!! i able to transmit what i want now.
modified code: void putc_buffer(int8 cmd) { int restart = 0; while (tx_counter>(TX_SIZE - 1)); ... |
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| Topic: Some weird character in rs232 |
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| funmix Replies: 4 Views: 4604 |
Forum: General CCS C Discussion Posted: Sat Apr 28, 2007 9:11 pm Subject: Some weird character in rs232 |
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//VARIABLES GLOBALS //Receive Variables************************************************************* static int8 char_rcved,data_valid,rx_in; static int8 buffer_overflow,stream_complete; //*** ... |
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| Topic: Some weird character in rs232 |
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| funmix Replies: 4 Views: 4604 |
Forum: General CCS C Discussion Posted: Sat Apr 28, 2007 8:07 am Subject: Some weird character in rs232 |
| output in terminal:
1070-1-110 100-1-11070-1-110 100-1-11070-1-110 100-1-110100-1- 11070-1-110 100-1-11070-1-110 100-1-11070-1-110 100-1-11070-1-1 10 100-1 ... |
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| Topic: Some weird character in rs232 |
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| funmix Replies: 4 Views: 4604 |
Forum: General CCS C Discussion Posted: Sat Apr 28, 2007 6:41 am Subject: Some weird character in rs232 |
| i would like to transmit certain amount of character act like a communication protocol.
protocol format:||BUFFER #int_TBE void Serial_TX_isr(void) { if(tx_counter!=0)/ ... |
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| Topic: RS485 half duplex communication |
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| funmix Replies: 17 Views: 26176 |
Forum: General CCS C Discussion Posted: Thu Apr 26, 2007 10:10 pm Subject: RS485 half duplex communication |
| Can you post your complete code for master and slave?
How about your hardware configuration? the H/F is 0 for full duplex, half duplex for 1 |
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| Topic: need help in protocol implementation |
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| funmix Replies: 3 Views: 4617 |
Forum: General CCS C Discussion Posted: Thu Apr 26, 2007 6:17 pm Subject: need help in protocol implementation |
| Hi PCM,
Thanks for reply. Any example code to refer? i have read the thread, but i got no idea how to start. |
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| Topic: need help in protocol implementation |
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| funmix Replies: 3 Views: 4617 |
Forum: General CCS C Discussion Posted: Thu Apr 26, 2007 10:30 am Subject: need help in protocol implementation |
| Hi everyone,
I wish to design a network with 485 network(rs232 function). I am facing difficulty to design the protocol. protocol format : <start><address><dataLength><data& ... |
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| Topic: USART address detect |
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| funmix Replies: 2 Views: 5930 |
Forum: General CCS C Discussion Posted: Thu Apr 26, 2007 2:05 am Subject: USART address detect |
| I have modifed the code..
below is the #int_rda routine, please comment #include <18F4520.h> #fuses HS,NOWDT,NOPROTECT,NOLVP #define FREQ_OSC 20000000 #define BAUD_RATE 19200 # ... |
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| Topic: USART address detect |
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| funmix Replies: 2 Views: 5930 |
Forum: General CCS C Discussion Posted: Wed Apr 25, 2007 10:33 am Subject: USART address detect |
| Any comment for the code? I am going to implement 9 bit addressable mode USART.
#case #include <18F4520.h> #fuses HS,NOWDT,NOPROTECT,NOLVP #define FREQ_OSC 20000000 #define BAUD_RATE ... |
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| Topic: Enabling/Disabling Hardware USART on the fly? |
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| funmix Replies: 10 Views: 14582 |
Forum: General CCS C Discussion Posted: Wed Apr 25, 2007 6:50 am Subject: Enabling/Disabling Hardware USART on the fly? |
| Ya..I am going to design simple 485 protocol
<start><node addr><length><data><checksum> Do you have sample code that i can refer to design the 485 protocol? I ha ... |
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| Topic: Enabling/Disabling Hardware USART on the fly? |
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| funmix Replies: 10 Views: 14582 |
Forum: General CCS C Discussion Posted: Wed Apr 25, 2007 6:28 am Subject: Enabling/Disabling Hardware USART on the fly? |
| To JimJ
Do you mind to share your working code? communication between multiple slaves via USART. Appreciate if you are sharing |
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| Topic: RS232 and RS485 working together ? |
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| funmix Replies: 5 Views: 8277 |
Forum: General CCS C Discussion Posted: Sun Apr 22, 2007 8:55 pm Subject: RS232 and RS485 working together ? |
| HI cookie,
do you mind to share your working code? |
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| Topic: Request Ex_rs485.c |
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| funmix Replies: 1 Views: 4211 |
Forum: General CCS C Discussion Posted: Thu Apr 19, 2007 7:30 pm Subject: Request Ex_rs485.c |
| Hi guys, Can someone post ex_rs485.c here? My compiler 3.222 doesn't provide this file in example folder...appreciate if someone can post it here...
Thanks |
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