7u83/stc_rpncalc
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do not compile with stack auto, change functions to be nonreentrant, use fixed parameters

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- frees up ~4KB of code space
This commit is contained in:
Jeff Wang
2019-05-02 03:27:01 -04:00
parent 6399cbf44f
commit 0049f3df98
15 changed files with 121 additions and 104 deletions
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27
src/main.c
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@ -39,8 +39,12 @@ volatile uint8_t NewKeyEmpty;
#define INCR_NEW_KEY_I(i) i = (i + 1) & 3
volatile uint8_t SecCount;
//#define TRACK_TIME
#ifdef TRACK_TIME
volatile uint8_t SecCount;
#endif
void timer0_isr() SDCC_ISR(1,1)
{
#ifdef TRACK_TIME
@ -119,9 +123,9 @@ static void latch_on(void)
#endif //!DESKTOP
char Buf[DECN_BUF_SIZE];
__xdata char EntryBuf[MAX_CHARS_PER_LINE + 1];
__xdata uint8_t ExpBuf[2];
__xdata const char VER_STR[32+1] = "STC RPN Calculator v1.03";
#ifdef DESKTOP
static void print_entry_bufs(void){
@ -149,7 +153,6 @@ int main()
};
uint8_t entry_i = 0;
uint8_t entering_exp = ENTERING_DONE;
uint8_t no_lift = 0;
uint8_t exp_i = 0;
int8_t disp_exponent;
NewKeyEmpty = 1; //initially empty
@ -172,7 +175,7 @@ int main()
ExpBuf[0] = 0;
ExpBuf[1] = 0;
LCD_OutString("STC RPN Calculator v1.02", 32);
LCD_OutString(VER_STR, 32);
#ifdef DESKTOP
LcdAvailable.release();
#endif
@ -324,7 +327,7 @@ int main()
exponent = -exponent;
}
EntryBuf[entry_i] = '\0';
push_decn(EntryBuf, exponent, no_lift);
push_decn(EntryBuf, exponent);
process_cmd(KEY_MAP[i_key]);
//reset state as initial ENTERING_DONE state
entering_exp = ENTERING_DONE;
@ -336,14 +339,14 @@ int main()
//dup
process_cmd(KEY_MAP[i_key]);
}
no_lift = 1;
NoLift = 1;
} break;
//////////
case 'c': {
if (entering_exp == ENTERING_DONE){
//clear
clear_x();
no_lift = 1;
NoLift = 1;
entering_exp = ENTERING_SIGNIF;
EntryBuf[entry_i] = '0';
//do not increment entry_i from 0, until first non-0 entry
@ -376,7 +379,7 @@ int main()
exponent = -exponent;
}
EntryBuf[entry_i] = '\0';
push_decn(EntryBuf, exponent, no_lift);
push_decn(EntryBuf, exponent);
process_cmd(KEY_MAP[i_key]);
//reset state as initial ENTERING_DONE state
entering_exp = ENTERING_DONE;
@ -388,7 +391,7 @@ int main()
//process key
process_cmd(KEY_MAP[i_key]);
}
no_lift = 0;
NoLift = 0;
} break;
//////////
default: process_cmd(KEY_MAP[i_key]);
@ -403,10 +406,10 @@ int main()
LCD_GoTo(0,0);
//display y register on first line
if (entering_exp == ENTERING_DONE){
disp_exponent = decn_to_str(Buf, get_y());
disp_exponent = decn_to_str(get_y());
} else {
//display x on 1st line, entered number on 2nd line
disp_exponent = decn_to_str(Buf, get_x());
disp_exponent = decn_to_str(get_x());
}
if (disp_exponent == 0){
LCD_OutString(Buf, MAX_CHARS_PER_LINE);
@ -430,7 +433,7 @@ int main()
print_entry_bufs();
#endif
if (entering_exp == ENTERING_DONE){
disp_exponent = decn_to_str(Buf, get_x());
disp_exponent = decn_to_str(get_x());
if (disp_exponent == 0){
LCD_OutString(Buf, MAX_CHARS_PER_LINE);
} else { //have exponent to display