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eeprom: provide smaller code for SERIAL_ECHOPAIR

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SERIAL_ECHOPAIR implies, eventually, two calls to MYSERIAL.print.  One
of these has FORCE_INLINE for a per-character loop, and both involve
constructing a method call rather than a simple function call.

Produce better and smaller code by providing three specialised
functions serial_echopair.  This saves 672 bytes of program memory
(with EEPROM_SETTINGS and SDSUPPORT enabled).

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
This commit is contained in:
Ian Jackson
2012-08-04 16:13:25 +01:00
parent 957e966d2d
commit 7bb326d389
2 changed files with 12 additions and 1 deletions
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6
Marlin/Marlin.h
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@@ -84,7 +84,11 @@ const char echomagic[] PROGMEM ="echo:";
#define SERIAL_ECHOLN(x) SERIAL_PROTOCOLLN(x)
#define SERIAL_ECHOLNPGM(x) SERIAL_PROTOCOLLNPGM(x)
#define SERIAL_ECHOPAIR(name,value) {SERIAL_ECHOPGM(name);SERIAL_ECHO(value);}
#define SERIAL_ECHOPAIR(name,value) (serial_echopair_P(PSTR(name),(value)))
void serial_echopair_P(const char *s_P, float v);
void serial_echopair_P(const char *s_P, double v);
void serial_echopair_P(const char *s_P, unsigned long v);
//things to write to serial from Programmemory. saves 400 to 2k of RAM.

7
Marlin/Marlin.pde
View File

@@ -203,6 +203,13 @@ bool Stopped=false;
void get_arc_coordinates();
void serial_echopair_P(const char *s_P, float v)
{ serialprintPGM(s_P); SERIAL_ECHO(v); }
void serial_echopair_P(const char *s_P, double v)
{ serialprintPGM(s_P); SERIAL_ECHO(v); }
void serial_echopair_P(const char *s_P, unsigned long v)
{ serialprintPGM(s_P); SERIAL_ECHO(v); }
extern "C"{
extern unsigned int __bss_end;
extern unsigned int __heap_start;