git.y1.nz

commit 71a2398278fe7301554e2c4014cbfafc8813e1f5
parent 5acc7cfbaedea25ae33c6fd6344735fefcf424d2
Author: bbbbbr <bbbbbr@users.noreply.github.com>
Date:   Fri,  9 May 2025 12:10:15 -0700

Merge pull request #775 from bbbbbr/example/mbc7_note

Examples: MBC7 GBC 2x speed note
Diffstat:
M
gbdk-lib/examples/gb/mbc7_accelerometer/Readme.md
7
++++++-
M
gbdk-lib/examples/gb/mbc7_accelerometer/src/mbc7_accelerometer.c
6
++++++

2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/gbdk-lib/examples/gb/mbc7_accelerometer/Readme.md b/gbdk-lib/examples/gb/mbc7_accelerometer/Readme.md
@@ -26,7 +26,12 @@ Some example ranges for the sensor data:
 ```
 Slow rotation, measuring mostly the pull
 earth's gravity when the sensor not flat.
-The range is for a full rotation of 90 degrees from flat
+The range is for a full rotation of 90 degrees from flat.
+
+Note: The ranges below are for regular single-speed
+processor mode. In GBC Double-speed mode there appears
+to be an offset of around +440 on the X axis and +480
+on the axis when the cart is flat/centered.
 
 X:  Left          Centered          Right
    0x8230 <------- 0x81BC -------> 0x8148
diff --git a/gbdk-lib/examples/gb/mbc7_accelerometer/src/mbc7_accelerometer.c b/gbdk-lib/examples/gb/mbc7_accelerometer/src/mbc7_accelerometer.c
@@ -19,6 +19,12 @@
 
 // Accelerometer Sensor data ranges
 //
+// These ranges are for regular single-speed
+// processor mode. In GBC Double-speed mode
+// there appears to be an offset of +440 on
+// the X axis and +480 on the axis when the
+// cart is flat/centered.
+//
 // Slow rotation, measuring mostly the pull
 // earth's gravity when the sensor not flat.
 //

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