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Merge pull request #146 from ranma/printopt

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Optimize printing functions
This commit is contained in:
René van Dorst
2026-03-02 20:59:26 +00:00
committed by GitHub
parent a89467febc 9bd2d446d7
commit a15500c493
2 changed files with 35 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
rtl837x_common.h
+1 -1
View File
@@ -101,7 +101,7 @@ extern __xdata struct uip_eth_addr uip_ethaddr;
// Headers for calls in the common code area (HOME/BANK0) // Headers for calls in the common code area (HOME/BANK0)
void print_string(__code char *p); void print_string(__code char *p);
void print_string_x(__xdata char *p); void print_string_x(__xdata char *p);
void print_long(__xdata uint32_t a); void print_long(uint32_t a);
void print_short(uint16_t a); void print_short(uint16_t a);
void print_byte(uint8_t a); void print_byte(uint8_t a);
void itoa(uint8_t v); void itoa(uint8_t v);
rtlplayground.c
+34 -23
View File
@@ -260,27 +260,44 @@ uint16_t strlen_x(register __xdata const char *s)
void print_short(uint16_t a) void print_short(uint16_t a)
{ {
// allocating the registers first improves the sdcc code here
uint8_t h = a >> 8;
uint8_t l = a;
print_string("0x"); print_string("0x");
for (signed char i = 12; i >= 0; i -= 4) { print_byte(h);
write_char(hex[(a >> i) & 0xf]); print_byte(l);
}
} }
void print_long(uint32_t a)
void print_long(__xdata uint32_t a)
{ {
// allocating the registers first improves the sdcc code here
uint8_t a24 = a >> 24;
uint8_t a16 = a >> 16;
uint8_t a8 = a >> 8;
uint8_t a0 = a;
print_string("0x"); print_string("0x");
for (signed char i = 28; i >= 0; i -= 4) { print_byte(a24);
write_char(hex[(a >> i) & 0xf]); print_byte(a16);
} print_byte(a8);
print_byte(a0);
} }
void print_byte(uint8_t a) void print_byte(uint8_t a)
{ {
write_char(hex[(a >> 4) & 0xf]); char high = (a >> 4) + '0';
write_char(hex[a & 0xf]); if (high > '9') {
} high += 'a' - ('0' + 10);
}
write_char(high);
char low = (a & 0xf) + '0';
if (low > '9') {
low += 'a' - ('0' + 10);
}
write_char(low);
}
/* /*
* External IRQ 0 Service Routine: Called on link change? * External IRQ 0 Service Routine: Called on link change?
@@ -594,14 +611,10 @@ void print_sfr_data(void)
{ {
write_char('0'); write_char('0');
write_char('x'); write_char('x');
write_char(hex[sfr_data[0] >> 4]); print_byte(sfr_data[0]);
write_char(hex[sfr_data[0] & 0xf]); print_byte(sfr_data[1]);
write_char(hex[sfr_data[1] >> 4]); print_byte(sfr_data[2]);
write_char(hex[sfr_data[1] & 0xf]); print_byte(sfr_data[3]);
write_char(hex[sfr_data[2] >> 4]);
write_char(hex[sfr_data[2] & 0xf]);
write_char(hex[sfr_data[3] >> 4]);
write_char(hex[sfr_data[3] & 0xf]);
} }
@@ -609,10 +622,8 @@ void print_phy_data(void)
{ {
write_char('0'); write_char('0');
write_char('x'); write_char('x');
write_char(hex[SFR_DATA_8 >> 4]); print_byte(SFR_DATA_8);
write_char(hex[SFR_DATA_8 & 0xf]); print_byte(SFR_DATA_0);
write_char(hex[SFR_DATA_0 >> 4]);
write_char(hex[SFR_DATA_0 & 0xf]);
} }