merge/um70:via: Avoid sprintf() to make the code fit into flash (#12919)
The code using sprintf() did not fit into flash when `merge/um70:via` was compiled with avr-gcc 5.4.0: * The firmware is too large! 29756/28672 (1084 bytes over) Replacing `sprintf(wpm_str, " %03d", current_wpm);` with custom formatting code reduces the firmware size by 1504 bytes, which is enough to make the `merge/um70:via` firmware fit: * The firmware size is approaching the maximum - 28252/28672 (98%, 420 bytes free)
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@ -15,7 +15,6 @@
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*/
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#include QMK_KEYBOARD_H
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#include <stdio.h>
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enum layer_names {
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_BASE,
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@ -123,7 +122,7 @@ static const char PROGMEM merge_logo[] = {
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0x01, 0x00, 0x01, 0x01, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00
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};
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int current_wpm = 0;
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uint8_t current_wpm = 0;
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static void print_status_narrow(void) {
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oled_set_cursor(0,1);
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@ -159,10 +158,15 @@ static void print_status_narrow(void) {
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//oled_write_ln_P(PSTR(" "), false);
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oled_write_P(PSTR("-----"), false);
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// WPM counter Start (Need #include <stdio.h> to work)
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char wpm_str[8];
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// WPM counter Start
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char wpm_str[5];
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oled_set_cursor(0,13);
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sprintf(wpm_str, " %03d", current_wpm);
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wpm_str[4] = '\0';
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uint8_t n = current_wpm;
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wpm_str[3] = '0' + n % 10;
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wpm_str[2] = '0' + (n /= 10) % 10;
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wpm_str[1] = '0' + n / 10;
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wpm_str[0] = ' ';
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oled_write(wpm_str, false);
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oled_set_cursor(0,14);
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oled_write(" WPM ", false);
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