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I use a scheme similar to the proposed one by Adrian to control two TDA7449 i2c audio preamp with two data lines and a data line for the shared clock.

you must ensure that the code checks the incoming line wthin less than half a bit time of the character beginning.
Another alternative, is an external SPI UART.

Best Wishes

As Ttelmah say, y ...

what modem are you using?
I my proyects with motorola G20 GSM modem i need to connect some of the RS232 modem hardware handshake lines together to get it work...
Most modems use a hardware handshak ...

Most modems use a hardware handshake protocol, you need to control or loop togheter the handshakes lines.
In the development a similar product i find very useful monitor the communication between p ...

Try add a i2c_stop() to stop the bus where you are checking to finish the write.

Code:
void page_write_ext_eeprom(long int address, char *data)
{
short int status;
int i; ...

In the read function you need to wait for $ symbol, or better $GPGGA, then read the rest of the line.

Search the forum for NMEA parsing.

I do someting like that, and then do the parsing of the ...

I use this routines for ps/2 i/o, with a pic16f628 running @4mhz intrc.
Work without problem in more than 2000 units deployed.
You can use this for code as Asm inline o recode in CCS C.

KBD_CLK_ ...

no, nothing is set in the advanced tab.

THIS IS WORKING....

the full command line is:
"C:\Archivos de programa\PICC\Ccsc.exe" +STDOUT +FH +DC +Y9 +T +A +EA %N

HTTP://www.laser2000.com.ar/ULTRAEDIT.jpg

Hernan from Argentina

Add a call to the parse function in the main loop. The garbage that you get in the pc is the uninitialized content of GRTMC buffer.

while(TRUE){
int b;

parse(); // & ...

Alex,

I feel it, it is truth, there is a typing error in the for loop, I already corrected it.

The 1ms works ok in Powertip 1602 LCDs, and avoided the blinking that happens when was 5ms, this ...

I adapt CCS driver for use the 2wire serial lcd interface.

I found this interface very useful for lcd when a 1 wire serial lcd is not practical due use of INTRC osc configuration. This interface ha ...