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authorSergey Vlasov <sigprof@gmail.com>2021-05-31 00:47:44 +0300
committerGitHub <noreply@github.com>2021-05-30 14:47:44 -0700
commit3aca3d35729bd7445846918cb5a171c5e0093997 (patch)
tree48b8ca3726724cc8ede6eb84cf2ac5b975c84288 /keyboards/merge/um70
parent305cca9a5e4c304b0883f07ab4e5de9a493fdbd9 (diff)
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)
Diffstat (limited to 'keyboards/merge/um70')
-rw-r--r--keyboards/merge/um70/keymaps/via/keymap.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/keyboards/merge/um70/keymaps/via/keymap.c b/keyboards/merge/um70/keymaps/via/keymap.c
index 59483e64a4..17cb2895cb 100644
--- a/keyboards/merge/um70/keymaps/via/keymap.c
+++ b/keyboards/merge/um70/keymaps/via/keymap.c
@@ -15,7 +15,6 @@
*/
#include QMK_KEYBOARD_H
-#include <stdio.h>
enum layer_names {
_BASE,
@@ -123,7 +122,7 @@ static const char PROGMEM merge_logo[] = {
0x01, 0x00, 0x01, 0x01, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00
};
-int current_wpm = 0;
+uint8_t current_wpm = 0;
static void print_status_narrow(void) {
oled_set_cursor(0,1);
@@ -159,10 +158,15 @@ static void print_status_narrow(void) {
//oled_write_ln_P(PSTR(" "), false);
oled_write_P(PSTR("-----"), false);
- // WPM counter Start (Need #include <stdio.h> to work)
- char wpm_str[8];
+ // WPM counter Start
+ char wpm_str[5];
oled_set_cursor(0,13);
- sprintf(wpm_str, " %03d", current_wpm);
+ wpm_str[4] = '\0';
+ uint8_t n = current_wpm;
+ wpm_str[3] = '0' + n % 10;
+ wpm_str[2] = '0' + (n /= 10) % 10;
+ wpm_str[1] = '0' + n / 10;
+ wpm_str[0] = ' ';
oled_write(wpm_str, false);
oled_set_cursor(0,14);
oled_write(" WPM ", false);