fx2debug.h¶
The fx2debug.h
header contains templated debug serial port bitbang routines for the Cypress FX2 series implemented in assembly. This header is the complete implementation of the debug serial port and does not have a corresponding library.
Reference¶
Defines
-
DEFINE_DEBUG_FN(name, tx, baud)¶
This macro defines a function
void name(uint8_t c)
that implements a robust blocking serial transmitter for debug output. Thetx
parameter may point to any pin, and is defined in the formatPxn
. The serial format is fixed at 8 data bits, no parity, 1 stop bit, and the baud rate is configurable, up to 230400 at 48 MHz, up to 115200 at 24 MHz, and up to 57600 at 12 MHz.For example, invoking the macro as
DEFINE_DEBUG_FN(tx_byte, PA0, 57600)
defines a routinevoid tx_byte(uint8_t c)
that assumes an UART receiver’s RX pin is connected to A0.
-
DEFINE_DEBUG_PUTCHAR_FN(tx, baud)¶
Same as
DEFINE_DEBUG_FN()
, but defines anint putchar(int c)
routine that can be used with theprintf
family of functions. (The C standard requiresputchar
to have the specified signature).