Added some more code

main/battery.cpp

@@ -257,6 +257,48 @@ uint8_t count_curve_points(BatteryCellType cellType)
     return count;
 }
 
+std::optional<CalibrationPointVoltages> get_point_n_voltages(BatteryCellType cellType, uint8_t num)
+{
+    #define GET_POINT_N_VOLTAGES(higherVoltage,lowerVoltage,fromAh,toAh) \
+        if (count == num) { \
+            uint16_t minVoltage = (lowerVoltage) * 100; \
+            uint16_t maxVoltage = (higherVoltage) * 100; \
+            return CalibrationPointVoltages{ .minVoltage=minVoltage, .maxVoltage=maxVoltage }; \
+        } \
+        count++;
+
+    uint8_t count = 0;
+    CalibrationPointVoltages point;
+    switch (cellType)
+    {
+        case BatteryCellType::_22P:
+        {
+            BAT_CURVE_22P(GET_POINT_N_VOLTAGES);
+        }
+        case BatteryCellType::HG2:
+        {
+            BAT_CURVE_HG2(GET_POINT_N_VOLTAGES);
+        }
+        case BatteryCellType::MH1:
+        {
+            BAT_CURVE_MH1(GET_POINT_N_VOLTAGES);
+        }
+        case BatteryCellType::VTC5:
+        {
+            BAT_CURVE_VTC5(GET_POINT_N_VOLTAGES);
+        }
+        case BatteryCellType::BAK_25R:
+        {
+            BAT_CURVE_25R(GET_POINT_N_VOLTAGES);
+        }
+        case BatteryCellType::HE4:
+        {
+            BAT_CURVE_HE4(GET_POINT_N_VOLTAGES);
+        }
+    }
+    return std::nullopt;
+}
+
 namespace battery {
 std::optional<float> bootBatPercentage;
 std::optional<float> bootBatWh;

main/battery.h

@@ -6,6 +6,11 @@
 // local includes
 #include <bobbytypesafeenum.h>
 
+typedef struct {
+    uint16_t minVoltage;
+    uint16_t maxVoltage;
+} CalibrationPointVoltages;
+
 // battery curves
 #define PERCENTAGE(higherVoltage,lowerVoltage,fromAh,toAh) \
 if (cellVoltage >= lowerVoltage && cellVoltage <= higherVoltage) \
@@ -150,6 +155,8 @@ float getTarget_mAh();
 
 uint8_t count_curve_points(BatteryCellType cellType);
 
+std::optional<CalibrationPointVoltages> get_point_n_voltages(BatteryCellType cellType, uint8_t num);
+
 namespace battery {
 extern std::optional<float> bootBatPercentage;
 extern std::optional<float> bootBatWh;

main/displays/batterygraphdisplay.cpp

@@ -4,22 +4,29 @@
 #include <screenmanager.h>
 
 // local includes
+#include "globals.h"
 #include "displays/menus/batterymenu.h"
 
 namespace {
     constexpr char TEXT_BATTERY_GRAPH[] = "Battery Level";
 } // namespace
 
-void BatteryGraphDisplay::initScreen() {
+void BatteryGraphDisplay::initScreen()
+{
     Base::initScreen();
 }
 
-std::string BatteryGraphDisplay::text() const {
+std::string BatteryGraphDisplay::text() const
+{
     return TEXT_BATTERY_GRAPH;
 }
 
-void BatteryGraphDisplay::redraw() {
+void BatteryGraphDisplay::redraw()
+{
+    using namespace espgui;
     Base::redraw();
+
+    // tft.drawLine() code
 }
 
 void BatteryGraphDisplay::buttonPressed(espgui::Button button)

main/displays/batterygraphdisplay.h

@@ -1,7 +1,5 @@
 #pragma once
 
-// 3rdparty lib includes
-
 // local includes
 #include "bobbydisplaywithtitle.h"