From 0e10d404537f850f639e38a2200cf8ec94d1e2bf Mon Sep 17 00:00:00 2001
From: Brady Law <bradyl16@gmail.com>
Date: Tue, 16 Dec 2025 10:29:12 -0800
Subject: [PATCH] Always show co2 ppm

---
 bitclock-fw/main/libs/aqi_alert.c       |  2 +-
 bitclock-fw/main/lvgl/views/aqi_alert.c | 15 +++++++++++++++
 bitclock-fw/main/lvgl/views/aqi_alert.h |  1 +
 bitclock-fw/main/tasks/eink_display.c   |  1 +
 4 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/bitclock-fw/main/libs/aqi_alert.c b/bitclock-fw/main/libs/aqi_alert.c
index 0297315..6093417 100644
--- a/bitclock-fw/main/libs/aqi_alert.c
+++ b/bitclock-fw/main/libs/aqi_alert.c
@@ -34,7 +34,7 @@ aqi_alert_reason_t aqi_alerts_check(aqi_data_t *aqi_data) {
   if (aqi_data->voc_index >= 250) {
     return AQI_ALERT_VOC_HIGH;
   }
-  if (aqi_data->co2_ppm >= 700) {
+  if (aqi_data->co2_ppm >= 800) {
     return AQI_ALERT_CO2_HIGH;
   }
 
diff --git a/bitclock-fw/main/lvgl/views/aqi_alert.c b/bitclock-fw/main/lvgl/views/aqi_alert.c
index 7a9acaf..1745735 100644
--- a/bitclock-fw/main/lvgl/views/aqi_alert.c
+++ b/bitclock-fw/main/lvgl/views/aqi_alert.c
@@ -8,6 +8,7 @@ LV_IMAGE_DECLARE(material_mode_fan);
 
 lv_obj_t *fan_img;
 lv_obj_t *alert_label;
+lv_obj_t *co2_label;
 
 lv_helper_aqi_alert_data_t lv_helper_aqi_alert_data = {0};
 
@@ -29,6 +30,13 @@ void lv_helper_aqi_alert_create(bool align_right) {
   lv_obj_align(alert_label,
                align_right ? LV_ALIGN_TOP_RIGHT : LV_ALIGN_TOP_LEFT,
                36 * (align_right ? -1 : 1), 17);
+  
+  co2_label = lv_label_create(screen);
+  bool align_co2_right = !align_right;
+  lv_obj_add_style(co2_label, &sublabel_style, LV_PART_MAIN);
+  lv_obj_align(co2_label,
+                LV_ALIGN_TOP_MID,
+                0, 17);
 }
 
 void lv_helper_aqi_alert_update(lv_helper_aqi_alert_data_t *data) {
@@ -60,8 +68,15 @@ void lv_helper_aqi_alert_update(lv_helper_aqi_alert_data_t *data) {
     label_str = "";
     break;
   }
+
   set_text_if_changed(alert_label, label_str);
 
+  // Round to down to nearest 50 ppm
+  uint16_t rounded_co2 = data->co2_ppm / 50 * 50;
+  static char co2_str[12];
+  snprintf(co2_str, sizeof(co2_str), "%" PRIu16 " PPM", rounded_co2);
+  set_text_if_changed(co2_label, co2_str);
+
   void *image_src = NULL;
   if (data->alert_reason != AQI_ALERT_NONE) {
     image_src = &material_mode_fan;
diff --git a/bitclock-fw/main/lvgl/views/aqi_alert.h b/bitclock-fw/main/lvgl/views/aqi_alert.h
index 08113ec..a79dcc9 100644
--- a/bitclock-fw/main/lvgl/views/aqi_alert.h
+++ b/bitclock-fw/main/lvgl/views/aqi_alert.h
@@ -4,6 +4,7 @@
 
 typedef struct {
   aqi_alert_reason_t alert_reason;
+  uint16_t co2_ppm;
 } lv_helper_aqi_alert_data_t;
 extern lv_helper_aqi_alert_data_t lv_helper_aqi_alert_data;
 
diff --git a/bitclock-fw/main/tasks/eink_display.c b/bitclock-fw/main/tasks/eink_display.c
index a5ec9de..f5837b1 100644
--- a/bitclock-fw/main/tasks/eink_display.c
+++ b/bitclock-fw/main/tasks/eink_display.c
@@ -527,6 +527,7 @@ void eink_task_run(void *pvParameters) {
     static bool demo_mode = false;
     if (!demo_mode) {
       lv_helper_aqi_alert_data.alert_reason = aqi_alerts_check(&aqi_data);
+      lv_helper_aqi_alert_data.co2_ppm = aqi_data.co2_ppm;
     } else {
       // Conference display mode
       // If it is 0-5 seconds within the minute, or 30-35 seconds within the