From 496530c85c3848c04fcafa912d11b0f1991777c1 Mon Sep 17 00:00:00 2001
From: Joey Castillo <joeycastillo@utexas.edu>
Date: Sat, 8 Jan 2022 19:27:41 -0500
Subject: add driver, test app for LIS2DW accelerometer

---
 apps/accelerometer-test/app.c | 46 ++++++++++++-------------------------------
 1 file changed, 13 insertions(+), 33 deletions(-)

(limited to 'apps')

diff --git a/apps/accelerometer-test/app.c b/apps/accelerometer-test/app.c
index 8bd6537e..bfef132c 100644
--- a/apps/accelerometer-test/app.c
+++ b/apps/accelerometer-test/app.c
@@ -3,21 +3,15 @@
 #include <stdlib.h>
 #include <math.h>
 #include "watch.h"
-#include "lis2dh.h"
+#include "lis2dw.h"
 
-// This application displays data from the old Sensor Watch Motion sensor board.
-// Note that this board required A0 to be set high to power the sensor.
-// Future accelerometer boards will be powered directly from VCC.
-// Also note that this board has its INT1 pin wired to A1, which is not an external
-// wake pin. Future accelerometer boards will wire interrupt pins to A2 and A4.
-
-void cb_light_pressed(void) {
+static void cb_light_pressed(void) {
 }
 
-void cb_mode_pressed(void) {
+static void cb_mode_pressed(void) {
 }
 
-void cb_alarm_pressed(void) {
+static void cb_alarm_pressed(void) {
 }
 
 uint8_t interrupts = 0;
@@ -25,23 +19,16 @@ uint8_t last_interrupts = 0;
 uint8_t ticks = 0;
 char buf[13] = {0};
 
-void cb_interrupt_1(void) {
-    interrupts++;
-}
+static void cb_tick(void) {
+    if (!lis2dw_have_new_data()) return;
 
-void cb_tick(void) {
-    if (++ticks == 30) {
-        last_interrupts = interrupts;
-        interrupts = 0;
-        ticks = 0;
-    }
+    lis2dw_reading raw_reading;
+    lis2dw_acceleration_measurement measurement = lis2dw_get_acceleration_measurement(&raw_reading);
+    (void)measurement;
+    printf("%d, %d, %d\n", raw_reading.x, raw_reading.y, raw_reading.z);
 }
 
 void app_init(void) {
-    gpio_set_pin_direction(A0, GPIO_DIRECTION_OUT);
-    gpio_set_pin_function(A0, GPIO_PIN_FUNCTION_OFF);
-    gpio_set_pin_level(A0, true);
-
     watch_enable_display();
     watch_display_string("IN 0  0  0", 0);
 
@@ -51,17 +38,9 @@ void app_init(void) {
     watch_register_interrupt_callback(BTN_ALARM, cb_alarm_pressed, INTERRUPT_TRIGGER_RISING);
 
     watch_enable_i2c();
+    lis2dw_begin();
 
-    lis2dh_begin();
-    lis2dh_set_data_rate(LIS2DH_DATA_RATE_10_HZ);
-    lis2dh_configure_aoi_int1(
-        LIS2DH_INTERRUPT_CONFIGURATION_OR |
-        LIS2DH_INTERRUPT_CONFIGURATION_X_HIGH_ENABLE |
-        LIS2DH_INTERRUPT_CONFIGURATION_Y_HIGH_ENABLE |
-        LIS2DH_INTERRUPT_CONFIGURATION_Z_HIGH_ENABLE, 96, 0, true);
-
-    watch_register_interrupt_callback(A1, cb_interrupt_1, INTERRUPT_TRIGGER_RISING);
-    watch_rtc_register_tick_callback(cb_tick);
+    watch_rtc_register_periodic_callback(cb_tick, 16);
 }
 
 void app_wake_from_backup(void) {
@@ -77,6 +56,7 @@ void app_wake_from_standby(void) {
 }
 
 bool app_loop(void) {
+    // TODO: interrupt configuration for LIS2DW
     sprintf(buf, "IN%2d%3d%3d", ticks, interrupts, last_interrupts);
     watch_display_string(buf, 0);
 
-- 
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