altos: Flip acceleration data consistently for orientation changes

[fw/altos] / src / core / ao_config.c

diff --git a/src/core/ao_config.c b/src/core/ao_config.c
index 590d8a49c7e37f229975272eee3e4c5ca0a69655..4482f673f59c0fdbbe132f0c52bcd89d1095a762 100644 (file)
--- a/src/core/ao_config.c
+++ b/src/core/ao_config.c
@@ -514,6 +514,10 @@ ao_config_pad_orientation_show(void) __reentrant
        printf("Pad orientation: %d\n", ao_config.pad_orientation);
 }
 
+#ifndef AO_ACCEL_INVERT
+#define AO_ACCEL_INVERT        0x7fff
+#endif
+
 void
 ao_config_pad_orientation_set(void) __reentrant
 {
@@ -523,10 +527,10 @@ ao_config_pad_orientation_set(void) __reentrant
        _ao_config_edit_start();
        ao_cmd_lex_i &= 1;
        if (ao_config.pad_orientation != ao_cmd_lex_i) {
-               uint16_t t;
+               int16_t t;
                t = ao_config.accel_plus_g;
-               ao_config.accel_plus_g = 0x7fff - ao_config.accel_minus_g;
-               ao_config.accel_minus_g = 0x7fff - t;
+               ao_config.accel_plus_g = AO_ACCEL_INVERT - ao_config.accel_minus_g;
+               ao_config.accel_minus_g = AO_ACCEL_INVERT - t;
        }
        ao_config.pad_orientation = ao_cmd_lex_i;
        _ao_config_edit_finish();