static void ex11_chart_timer_cb(lv_timer_t * timer)
{
(void)timer;
/* ===== Read ALL sensor data ===== */
float ax, ay, az;
float gx, gy, gz;
#ifdef CYBSP_ENABLED
if(!aic_imu_read_accel(&ax, &ay, &az)) {
ax = 0; ay = 0; az = 9.81f;
}
if(!aic_imu_read_gyro(&gx, &gy, &gz)) {
gx = 0; gy = 0; gz = 0;
}
aic_tilt_update_from_imu();
float roll = aic_tilt_get_roll();
float pitch = aic_tilt_get_pitch();
#else
simulate_imu_accel(&ax, &ay, &az);
simulate_imu_gyro(&gx, &gy, &gz);
simulate_tilt_update();
float roll = sim_roll;
float pitch = sim_pitch;
#endif
/* ===== Get active tab index ===== */
/* 0=Bar, 1=Area, 2=Scatter, 3=Line */
uint32_t active_tab = lv_tabview_get_tab_active(ex11_tabview);
/* ===== Update ONLY the active tab ===== */
switch(active_tab) {
case 0: /* Tab 1: Bar Chart - Accel X/Y/Z */
{
/* Scale: -5 to +5 m/s2 -> 0 to 100 */
int32_t bar_x = (int32_t)((ax + 5.0f) * 10.0f);
int32_t bar_y = (int32_t)((ay + 5.0f) * 10.0f);
int32_t bar_z = (int32_t)((az + 5.0f) * 10.0f);
/* Clamp to range */
if(bar_x < 0) bar_x = 0; if(bar_x > 100) bar_x = 100;
if(bar_y < 0) bar_y = 0; if(bar_y > 100) bar_y = 100;
if(bar_z < 0) bar_z = 0; if(bar_z > 100) bar_z = 100;
/* Update each colored bar */
lv_chart_set_value_by_id(ex11_bar_chart,
ex11_bar_ser_x, 0, bar_x);
lv_chart_set_value_by_id(ex11_bar_chart,
ex11_bar_ser_y, 0, bar_y);
lv_chart_set_value_by_id(ex11_bar_chart,
ex11_bar_ser_z, 0, bar_z);
lv_chart_refresh(ex11_bar_chart);
lv_label_set_text_fmt(ex11_bar_labels[0],
"X: %.1f", (double)ax);
lv_label_set_text_fmt(ex11_bar_labels[1],
"Y: %.1f", (double)ay);
lv_label_set_text_fmt(ex11_bar_labels[2],
"Z: %.1f", (double)az);
break;
}
case 1: /* Tab 2: Area Chart - Tilt Magnitude */
{
/* Tilt magnitude: sqrt(roll^2 + pitch^2) */
float tilt_mag = sqrtf(roll * roll + pitch * pitch);
int32_t tilt_scaled = (int32_t)(tilt_mag);
if(tilt_scaled > 90) tilt_scaled = 90;
lv_chart_set_next_value(ex11_area_chart,
ex11_area_ser, tilt_scaled);
lv_label_set_text_fmt(ex11_area_label,
"Tilt: %.1f deg (R:%.1f P:%.1f)",
(double)tilt_mag, (double)roll, (double)pitch);
break;
}
case 2: /* Tab 3: Scatter - Roll vs Pitch */
{
/* Map: -90..+90 -> 0..200 (center=100) */
int32_t scatter_x = (int32_t)(
(roll + 90.0f) * (200.0f / 180.0f));
int32_t scatter_y = (int32_t)(
(pitch + 90.0f) * (200.0f / 180.0f));
if(scatter_x < 0) scatter_x = 0;
if(scatter_x > 200) scatter_x = 200;
if(scatter_y < 0) scatter_y = 0;
if(scatter_y > 200) scatter_y = 200;
lv_chart_set_next_value2(ex11_scatter_chart,
ex11_scatter_ser, scatter_x, scatter_y);
lv_label_set_text_fmt(ex11_scatter_label,
"Roll: %.1f Pitch: %.1f",
(double)roll, (double)pitch);
break;
}
case 3: /* Tab 4: Line Chart - Gyroscope */
{
/* Scale by 100 (Ex7 pattern) */
int32_t gx_scaled = (int32_t)(gx * 100);
int32_t gy_scaled = (int32_t)(gy * 100);
int32_t gz_scaled = (int32_t)(gz * 100);
lv_chart_set_next_value(ex11_line_chart,
ex11_line_ser[0], gx_scaled);
lv_chart_set_next_value(ex11_line_chart,
ex11_line_ser[1], gy_scaled);
lv_chart_set_next_value(ex11_line_chart,
ex11_line_ser[2], gz_scaled);
lv_label_set_text_fmt(ex11_line_labels[0],
"Gx: %.2f", (double)gx);
lv_label_set_text_fmt(ex11_line_labels[1],
"Gy: %.2f", (double)gy);
lv_label_set_text_fmt(ex11_line_labels[2],
"Gz: %.2f", (double)gz);
break;
}
}
}
