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+# AXP192
+
+**AXP192 is a highly integrated power system management chip.**
+
+## SetLed()
+
+**Syntax：**
+
+<mark>void SetLed(uint8_t state);</mark>
+
+**Description：Setting LED power indicator**
+
+**Example：**
+
+```arduino
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+  M5.Axp.SetLed(1);
+}
+void loop() {}
+```
+
+## CHGCurrent()
+
+**Syntax:**
+
+<mark>void SetCHGCurrent(uint8_t state);</mark>
+
+**Description: Set charging current.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+void setup() { 
+  M5.begin();
+  M5.Axp.SetCHGCurrent(AXP192::kCHG_190mA);
+}
+void loop() {
+}
+```
+
+
+## setSpkEnable()
+
+**Syntax：**
+
+<mark>void SetSpkEnable(uint8_t state);</mark>
+
+**Description：Enable speaker。**
+
+**Example：**
+```arduino
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+  M5.Axp.SetSpkEnable(1);
+}
+void loop() {
+
+}
+```
+
+## SetBusPowerMode()
+
+**Syntax：**
+
+<mark>void SetBusPowerMode(uint8_t state);</mark>
+
+**Description：Enable bus power output**
+
+**Example：**
+```arduino
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+}
+
+void loop() {
+    M5.Axp.SetBusPowerMode(1);
+}
+```
+
+## SetLcdVoltage()
+
+**Syntax:**
+
+<mark>void SetLcdVoltage(uint16_t voltage)</mark>
+
+**Description: Setting screen backlight voltage.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+
+void setup() { 
+  M5.begin();
+  M5.Axp.SetLcdVoltage(3300);
+}
+void loop() {
+
+}
+```
+
+## SetLDOEnable()
+
+**Syntax:**
+
+<mark>void SetLDOEnable(uint8_t number, bool state)</mark>
+
+**Description: Enable LDO Pin**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin();
+}
+
+void loop() {
+    M5.Axp.SetLDOEnable(3, 1);
+    delay(200);
+    M5.Axp.SetLDOEnable(3, 0);
+    delay(200);
+}
+```
+
+## SetLDOVoltage()
+
+**Syntax:**
+
+<mark>void SetLDOVoltage(uint8_t number, uint16_t voltage);</mark>
+
+**Description: Config LDO voltage**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+void setup() { 
+  M5.begin();
+  M5.Axp.SetLDOVoltage(3,3300);   
+}
+void loop() {
+
+}
+```
+
+
+## isACIN()
+
+**Syntax：**
+
+<mark>bool isACIN()</mark>
+
+**Description：Determine whether the external power supply is connected**
+
+**Example：**
+```arduino
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+}
+
+void loop() {
+    if(M5.Axp.isACIN){
+        Serial.print("AC IN");
+    }else{
+        Serial.print("Battery powered");
+    }
+}
+```
+
+## GetVapsData()
+
+**Syntax:**
+
+<mark>uint16_t GetVapsData(void);</mark>
+
+**Description: Get battery capacity.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+int Vaps;
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+}
+
+void loop() {
+  Vaps = M5.Axp.GetVapsData();
+  M5.Lcd.setCursor(0, 0, 1);
+  M5.Lcd.printf("battery capacity :%dmW\r\n", Vaps);
+  delay(500);
+}
+```
+
+## GetTempData()
+
+**Syntax:**
+
+<mark>uint16_t GetTempData(void);</mark>
+
+**Description: Get AXP192 chip temperature.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+int temp;
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+  M5.Lcd.fillScreen(BLACK);
+}
+
+void loop() {
+  temp = M5.Axp.GetTempData()*0.1-144.7;
+  M5.Lcd.setCursor(0, 0, 1);
+  M5.Lcd.printf("tempurature:%d\r\n", temp);
+  delay(500);
+}
+```
+
+
+## GetIdischargeData()
+
+**Syntax:**
+
+<mark>uint16_t GetIdischargeData(void);</mark>
+
+**Description: Obtain discharge current.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+int disCharge;
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+  M5.Lcd.fillScreen(BLACK);
+}
+
+void loop() {
+  disCharge = M5.Axp.GetIdischargeData() / 2;
+  M5.Lcd.setCursor(0, 0, 1);
+  M5.Lcd.printf("disCharge:%dma\r\n", disCharge);
+  delay(500);
+}
+```
+
+
+## GetIinData()
+
+**Syntax:**
+
+<mark>uint16_t GetIinData(void);</mark>
+
+**Description: Get input current.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+  M5.Lcd.fillScreen(BLACK);
+}
+
+void loop() {
+  M5.Lcd.setCursor(0, 0, 1);
+  M5.Lcd.printf("Iin:%.3fmA\r\n",M5.Axp.GetIinData() * 0.625);
+}
+```
+
+
+## GetIusbinData()
+
+**Syntax:**
+
+<mark>uint16_t GetIusbinData(void);</mark>
+
+**Description:Get USB current.**
+
+**Example:**
+
+```arduino
+#include <M5Core2.h>
+
+int Iusb;
+
+void setup() {
+  M5.begin(); //By default, "M5.begin()" will initialize AXP192 chip
+  M5.Lcd.fillScreen(BLACK);
+}
+
+void loop() {
+  Iusb = M5.Axp.GetIdischargeData() * 0.375;
+  M5.Lcd.setCursor(0, 0, 1);
+  M5.Lcd.printf("Iusbin:%da\r\n", Iusb);
+  delay(500);
+}
+```
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