Diff: max77650.cpp

Revision:

0:0bb9daf44568

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max77650.cpp	Tue Jun 19 20:57:15 2018 +0000
@@ -0,0 +1,193 @@
+/*******************************************************************************
+* Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a
+* copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense,
+* and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+* OTHER DEALINGS IN THE SOFTWARE.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+*******************************************************************************
+*/
+
+#include "max77650.h"
+
+/* LIBRARY FUNCTION SUCCESS*/
+#define F_SUCCESS_0  0
+
+/* LIBRARY FUNCTION ERROR CODES */
+#define F_ERROR_1 -1    //-1 if read/write errors exist         
+
+
+MAX77650::MAX77650(I2C &i2c) :
+    m_i2cBus(i2c)
+{
+
+}
+
+MAX77650::~MAX77650()
+{
+
+}
+
+
+int MAX77650::writeReg(registers_t reg_addr, uint8_t reg_data)
+{
+
+    char addr_plus_data[2] = {reg_addr, reg_data};
+
+    if ( m_i2cBus.write(I2C_W_ADRS, addr_plus_data, 2, false) == F_SUCCESS_0)
+        return F_SUCCESS_0;
+    else
+        return F_ERROR_1;
+
+}
+
+
+int MAX77650::readReg(registers_t reg_addr, uint8_t &value)
+{
+    int result;
+    char local_data[1];
+    local_data[0] = reg_addr;
+    char read_data[1];
+
+    result = m_i2cBus.write(I2C_W_ADRS, local_data, 1);
+    if(result == F_SUCCESS_0) {
+        result = m_i2cBus.read(I2C_R_ADRS, read_data , 1, false);
+        if (result == F_SUCCESS_0) {
+            value =  read_data[0];
+            result = F_SUCCESS_0;
+        }
+    }
+
+    return result;
+
+}
+
+
+/**
+ * @brief      Initialization of Chager for the MAX77650 PMIC
+ * @details    Sets the parameters for the charger.
+ * @return     status
+ */
+int MAX77650::initCharger() //Only for Mobility Demo BU
+{
+// Set the charge current to 52.5mA:
+// i2c write -> write 0x19 to register 0x1C
+    int status;
+
+    status = writeReg(CNFG_CHG_E, 0X19);
+
+    if (status == F_SUCCESS_0) {
+        // Set the charge voltage to 4.2V:
+        // i2c write -> write 0x60 to register 0x1E
+        status = writeReg(CNFG_CHG_G, 0X60);
+        if (status == F_SUCCESS_0) {
+            status = writeReg(INT_M_CHG, 0XFB);
+            if (status == F_SUCCESS_0) {
+                return F_SUCCESS_0;
+            }
+        }
+    } else
+        return F_ERROR_1;
+
+    return status;
+
+}
+
+
+int MAX77650::enCharger() //Only for Mobility Demo BU
+{
+//You can set the charge current and charge voltage as soon
+//as MAX77650 gets up and running.
+//Then, you can just disable/enable the charger whenever you like to have it charge the battery.
+// Enable or disable the charger:
+// i2c write -> write 0x01 to register 0x19 (enables the charger)
+    int status;
+    //Incorporated some of the LEDS driven by the PMIC to indicate chargering status
+    uint8_t reg, temp, mMASK = 3, pmicLED2_ON = 0x44, pmicLED2_OFF = 0x04, p1sDS50 = 0x17;
+    
+    status = readReg(STAT_CHG_B, reg);
+    if (status == F_ERROR_1)
+        return F_ERROR_1;
+    temp = reg>>2;
+    temp = temp & mMASK;
+
+    if (temp == 3) {
+        status = writeReg(CNFG_CHG_B, 0X01);
+        readReg(CNFG_CHG_B, reg);
+        readReg(STAT_CHG_B, reg);
+        if (status == F_SUCCESS_0) {
+            writeReg(CNFG_LED2_B,p1sDS50);
+            writeReg(CNFG_LED2_A,pmicLED2_ON);
+            return F_SUCCESS_0;
+        }
+    } else if (temp == 0) {
+
+        status = writeReg(CNFG_CHG_B, 0X00);
+        if (status == F_SUCCESS_0) {
+            writeReg(CNFG_LED2_A,pmicLED2_OFF);
+            return F_SUCCESS_0;
+        }
+
+    }
+    return F_ERROR_1;
+
+}
+
+/**
+ * @brief       Disable Charger Function
+ * @details     Sets the parameters for the charger.
+ *
+ * @parameters  reg_addr Register to read
+ */
+int MAX77650::disblCharger() //Only for Mobility Demo BU
+{
+//You can set the charge current and charge voltage as soon
+//as MAX77650 gets up and running.
+//Then, you can just disable/enable the charger whenever you like to have it charge the battery.
+// Enable or disable the charger:
+// i2c write -> write 0x00 to register 0x19 (disables the charger)
+
+    int status;
+    uint8_t reg, temp, mMASK = 3;
+    status = readReg(STAT_CHG_B, reg);
+    if (status == F_ERROR_1)
+        return F_ERROR_1;
+    temp = reg>>2;
+    temp = temp & mMASK;
+
+    if (temp == 0) {
+
+        status = writeReg(CNFG_CHG_B, 0X00);
+        if (status == F_ERROR_1) {
+            return F_ERROR_1;
+        }
+        return F_SUCCESS_0;
+    }
+    return F_ERROR_1;
+
+}
+
+