From: Keith Packard <keithp@keithp.com>
Date: Sun, 2 Aug 2020 20:07:01 +0000 (-0700)
Subject: altos: Support accel-only IMU configurations
X-Git-Tag: 1.9.6~1^2~36
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=18e24df0353c78ada8cc1d2439729bc2f2676205

altos: Support accel-only IMU configurations

This doesn't compute orientation, just allows for calibrating and recording
3-axis acceleration data.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/kernel/ao_sample.c b/src/kernel/ao_sample.c
index 67f20aff..91cf113e 100644
--- a/src/kernel/ao_sample.c
+++ b/src/kernel/ao_sample.c
@@ -44,10 +44,12 @@ alt_t		ao_sample_height;
 #if HAS_ACCEL
 accel_t		ao_sample_accel;
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 accel_t		ao_sample_accel_along;
 accel_t		ao_sample_accel_across;
 accel_t		ao_sample_accel_through;
+#endif
+#if HAS_GYRO
 gyro_t		ao_sample_roll;
 gyro_t		ao_sample_pitch;
 gyro_t		ao_sample_yaw;
@@ -73,10 +75,13 @@ accel_t		ao_accel_2g;		/* factory accel calibration */
 int32_t		ao_accel_scale;		/* sensor to m/s² conversion */
 #endif
 
-#if HAS_GYRO
+#if HAS_IMU
 accel_t		ao_ground_accel_along;
 accel_t		ao_ground_accel_across;
 accel_t		ao_ground_accel_through;
+#endif
+
+#if HAS_GYRO
 int32_t		ao_ground_pitch;
 int32_t		ao_ground_yaw;
 int32_t		ao_ground_roll;
@@ -91,10 +96,12 @@ int32_t ao_sample_pres_sum;
 #if HAS_ACCEL
 int32_t ao_sample_accel_sum;
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 int32_t ao_sample_accel_along_sum;
 int32_t ao_sample_accel_across_sum;
 int32_t	ao_sample_accel_through_sum;
+#endif
+#if HAS_GYRO
 int32_t ao_sample_pitch_sum;
 int32_t ao_sample_yaw_sum;
 int32_t	ao_sample_roll_sum;
@@ -114,10 +121,12 @@ ao_sample_preflight_add(void)
 #if HAS_BARO
 	ao_sample_pres_sum += ao_sample_pres;
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 	ao_sample_accel_along_sum += ao_sample_accel_along;
 	ao_sample_accel_across_sum += ao_sample_accel_across;
 	ao_sample_accel_through_sum += ao_sample_accel_through;
+#endif
+#if HAS_GYRO
 	ao_sample_pitch_sum += ao_sample_pitch;
 	ao_sample_yaw_sum += ao_sample_yaw;
 	ao_sample_roll_sum += ao_sample_roll;
@@ -184,10 +193,13 @@ ao_sample_preflight_set(void)
 	ao_ground_height = pres_to_altitude(ao_ground_pres);
 	ao_sample_pres_sum = 0;
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 	ao_ground_accel_along = ao_sample_accel_along_sum >> 9;
 	ao_ground_accel_across = ao_sample_accel_across_sum >> 9;
 	ao_ground_accel_through = ao_sample_accel_through_sum >> 9;
+
+#endif
+#if HAS_GYRO
 	ao_ground_pitch = ao_sample_pitch_sum;
 	ao_ground_yaw = ao_sample_yaw_sum;
 	ao_ground_roll = ao_sample_roll_sum;
@@ -353,10 +365,12 @@ ao_sample(void)
 #if HAS_ACCEL
 		ao_sample_accel = ao_data_accel(ao_data);
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 		ao_sample_accel_along = ao_data_along(ao_data);
 		ao_sample_accel_across = ao_data_across(ao_data);
 		ao_sample_accel_through = ao_data_through(ao_data);
+#endif
+#if HAS_GYRO
 		ao_sample_pitch = ao_data_pitch(ao_data);
 		ao_sample_yaw = ao_data_yaw(ao_data);
 		ao_sample_roll = ao_data_roll(ao_data);
@@ -393,13 +407,15 @@ ao_sample_init(void)
 	ao_sample_accel_sum = 0;
 	ao_sample_accel = 0;
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 	ao_sample_accel_along_sum = 0;
 	ao_sample_accel_across_sum = 0;
 	ao_sample_accel_through_sum = 0;
 	ao_sample_accel_along = 0;
 	ao_sample_accel_across = 0;
 	ao_sample_accel_through = 0;
+#endif
+#if HAS_GYRO
 	ao_sample_pitch_sum = 0;
 	ao_sample_yaw_sum = 0;
 	ao_sample_roll_sum = 0;
diff --git a/src/kernel/ao_sample.h b/src/kernel/ao_sample.h
index 4c51a58c..04e97e7b 100644
--- a/src/kernel/ao_sample.h
+++ b/src/kernel/ao_sample.h
@@ -133,16 +133,21 @@ extern accel_t	ao_ground_accel;	/* startup acceleration */
 extern accel_t 	ao_accel_2g;		/* factory accel calibration */
 extern int32_t	ao_accel_scale;		/* sensor to m/s² conversion */
 #endif
-#if HAS_GYRO
+#if HAS_IMU
 extern accel_t	ao_ground_accel_along;
 extern accel_t	ao_ground_accel_across;
 extern accel_t	ao_ground_accel_through;
-extern int32_t	ao_ground_pitch;	/* * 512 */
-extern int32_t	ao_ground_yaw;		/* * 512 */
-extern int32_t	ao_ground_roll;		/* * 512 */
 extern accel_t	ao_sample_accel_along;
 extern accel_t	ao_sample_accel_across;
 extern accel_t	ao_sample_accel_through;
+#endif
+#if HAS_GYRO
+#ifndef HAS_IMU
+#define HAS_IMU	1
+#endif
+extern int32_t	ao_ground_pitch;	/* * 512 */
+extern int32_t	ao_ground_yaw;		/* * 512 */
+extern int32_t	ao_ground_roll;		/* * 512 */
 extern gyro_t	ao_sample_roll;
 extern gyro_t	ao_sample_pitch;
 extern gyro_t	ao_sample_yaw;