Damnit! I accidentally refreshed the page and lost everything I just typed! Sorry but I'm only trialing the software so I'm not going to type out all the proper headings again!
If you look in serial_driver.h dated 15 Nov 2004 (from BoostC 1.8 I think) you will find the following problems (some code removed for clarity):
Note, this is relevant to the PIC16F628.
void PUTC(char tx_char)
{
volatile bit l_txif@T_TXIF_PIR.u_TXIF; // 0xf9e.4;
while (!l_txif); // wait until tx register is empty
l_txreg = tx_char;
}
l_txif will only be set when the l_txreg line is completed, therefore it will wait forever. It should be something like:
volatile bit l_trmt@0x98.1; //txsta
while (!l_trmt);
l_txreg = tx_char;
Which will wait for any current transmissions to finish.
If you look at:
void UART_INIT(unsigned char BRG_mode, unsigned char BRG_divisor)
{
volatile unsigned char l_rcsta@T_RCSTA;
volatile bit l_brgh@T_TXSTA.u_BRGH;
if (BRG_mode)
l_brgh = 1;
else
l_brgh = 0;
l_txsta = 0xa4; // enable transmit function
}
The l_txsta assignment overwrites any result from the l_brgh assignment. This ignores any low speed settings for the serial port.
Just quickly, there's a compiler bug involving conditional operators in an array index. Something like
a[(?d:e]=f;
has problems when
g=(?d:e;
a[g]=f;
works fine. I haven't got the code anymore so I can't remember the details. Sorry but my trial period is about to end so I'm off to evaluate other software.
Good Luck.
David
