Looks like file fpga_IO.c miss stdio.h include. ~d
On Thu, 29 Aug 2002 14:36:59 -0400 "John Shanton" <john_shan...@littleoptics.com> wrote: > > Problem with uprintf() when compiled in multiple files. > > I have three source code files, p2a-reva.c, fpga_IO.c, and serial_IO.c. > The first one is where main() resides. The file fpga_IO.c has a call to > uprintf() with a transmit character function pointer to txChar(). > > When I compile it as a single file (#include the latter two files into > the first file), it generates good code in which the setup before a call > to uprintf() consists of two push opcodes. The first push points to the > format string and the second push points to the txChar function. > > The problem I have is that when I compile the code with the following > command: > > msp430-gcc -mmcu=msp430x149 -mIAR -o p2a-reva -O p2a-reva.c fpga_IO.c > serial_IO.c > > I get code generated such that functions in the fpga_IO.c (second) file > has mov r14 and mov r15 instructions instead of push instructions before > the call to uprintf(). Functions in the first file still have the > correct push instructions prior to the call to uprintf(). > > The following are the generated assembler code fragments: > > Call to function uprintf( txChar, "done\n\r"); from function in source > file fpga_IO.c > 26d4: 3e 40 ae 26 mov #9902, r14 ; #0x26ae > 26d8: 3f 40 46 27 mov #10054, r15 ; #0x2746 > 26dc: b0 12 24 34 call #13348 ; #0x3424 > > Call to function uprintf( txChar, "done\n\r"); from function in > source file p2a-reva.c > 11a2: 30 12 61 11 push #4449 ; #0x1161 > 11a6: 30 12 46 27 push #10054 ; #0x2746 > 11aa: b0 12 24 34 call #13348 ; #0x3424 > > Note that address 0x2746 is the function txChar() that should be used by > uprintf(). Uprintf() is at address 0x3424. Both functions are calling > the exact same uprintf() routine but with a different set up before > calling. The code in the first function should use push instead of mov > before calling the uprint() function. > > What am I doing wrong? > Thanks. > John L. Shanton III > Little Optics, Inc. > >
