MAX77816 Library. The MAX77816 is a high-current, high-efficiency buck-boost regulator targeting single-cell Li-ion battery powered applications. Please find more detail things on the website: https://www.maximintegrated.com/en/products/power/switching-regulators/MAX77816.html
max77816.cpp
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Maxim Integrated Products, Inc. retains all 00030 * ownership rights. 00031 ******************************************************************************* 00032 */ 00033 #include "max77816.h" 00034 00035 /***** Definitions *****/ 00036 #define I2C_ADDR (0x18<<1) 00037 00038 //****************************************************************************** 00039 MAX77816::MAX77816(PinName sda, PinName scl) 00040 { 00041 i2c_ = new I2C(sda, scl); 00042 i2c_owner = true; 00043 00044 i2c_->frequency(400000); 00045 } 00046 00047 //****************************************************************************** 00048 MAX77816::MAX77816(I2C *i2c) : 00049 i2c_(i2c) 00050 { 00051 i2c_owner = false; 00052 } 00053 00054 //****************************************************************************** 00055 MAX77816::~MAX77816() 00056 { 00057 if(i2c_owner) { 00058 delete i2c_; 00059 } 00060 } 00061 00062 //****************************************************************************** 00063 int32_t MAX77816::init() 00064 { 00065 return 0; 00066 } 00067 00068 //****************************************************************************** 00069 int32_t MAX77816::writeReg(MAX77816::registers_t reg_addr, char reg_data) 00070 { 00071 char data[2]; 00072 00073 data[0] = reg_addr; 00074 data[1] = reg_data; 00075 if (i2c_->write(I2C_ADDR, data, 2) != 0) { 00076 return -1; 00077 } 00078 00079 return 0; 00080 } 00081 00082 //****************************************************************************** 00083 int32_t MAX77816::readReg(MAX77816::registers_t reg_addr) 00084 { 00085 char data; 00086 00087 data = reg_addr; 00088 if (i2c_->write(I2C_ADDR, &data, 1, true) != 0) { 00089 return -1; 00090 } 00091 00092 if (i2c_->read(I2C_ADDR | 0x01, &data, 1) != 0) { 00093 return -1; 00094 } 00095 00096 return (0x0 + data); 00097 } 00098 00099 00100 00101 //***************************************************************************** 00102 int32_t MAX77816::readBlock(MAX77816::registers_t startReg, MAX77816::registers_t stopReg, uint8_t *data) 00103 { 00104 int32_t rtnVal = -1; 00105 int32_t numBytes = ((stopReg - startReg) + 1); 00106 char packet[] = {static_cast<char>(startReg)}; 00107 00108 if(i2c_->write(I2C_ADDR, packet, 1) == 0) 00109 { 00110 rtnVal = i2c_->read(I2C_ADDR | 0x01, reinterpret_cast<char *>(data), numBytes); 00111 } 00112 00113 return rtnVal; 00114 } 00115 00116 00117 //***************************************************************************** 00118 int32_t MAX77816::writeBlock(MAX77816::registers_t startReg, MAX77816::registers_t stopReg, const uint8_t *data) 00119 { 00120 int32_t numBytes = ((stopReg - startReg) + 1); 00121 char packet[numBytes + 1]; 00122 00123 packet[0] = static_cast<char>(startReg); 00124 00125 memcpy(packet + 1, data, numBytes); 00126 00127 return i2c_->write(I2C_ADDR, packet, sizeof(packet)); 00128 } 00129 00130 00131 //***************************************************************************** 00132 int32_t MAX77816::getVersion() 00133 { 00134 int32_t rData; 00135 00136 rData = readReg(REG_0); 00137 if(rData< 0) 00138 return rData; 00139 00140 return ((rData >> 4) & 0x7); 00141 } 00142 00143 00144 //***************************************************************************** 00145 int32_t MAX77816::getChipRevision() 00146 { 00147 int32_t rData; 00148 00149 rData = readReg(REG_0); 00150 if(rData< 0) 00151 return rData; 00152 00153 return ((rData >> 0) & 0xf); 00154 } 00155 00156 //***************************************************************************** 00157 int32_t MAX77816::getStatus() 00158 { 00159 int32_t rData; 00160 00161 rData = readReg(REG_1); 00162 if(rData< 0) 00163 return rData; 00164 00165 return ((rData >> 0) & 0xf); 00166 } 00167 00168 //***************************************************************************** 00169 int32_t MAX77816::setVout(uint8_t reg_data) 00170 { 00171 int32_t rData; 00172 00173 rData = writeReg(REG_4, (reg_data & 0x7f)); 00174 return rData; 00175 } 00176 00177 //***************************************************************************** 00178 int32_t MAX77816::setVoutH(uint8_t reg_data) 00179 { 00180 int32_t rData; 00181 00182 rData = writeReg(REG_5, (reg_data & 0x7f)); 00183 return rData; 00184 } 00185 00186 //***************************************************************************** 00187 int32_t MAX77816::setIntMask(uint8_t reg_data) 00188 { 00189 int32_t rData; 00190 00191 rData = writeReg(REG_6, (reg_data & 0x7f)); 00192 return rData; 00193 } 00194 00195 int32_t MAX77816::setIntMask() 00196 { 00197 int32_t rData; 00198 00199 rData = readReg(REG_6); 00200 if(rData< 0) 00201 return rData; 00202 00203 return ((rData >> 0) & 0xf); 00204 } 00205 //***************************************************************************** 00206 int32_t MAX77816::getInt() 00207 { 00208 int32_t rData; 00209 00210 rData = readReg(REG_7); 00211 if(rData< 0) 00212 return rData; 00213 00214 return ((rData >> 0) & 0xf); 00215 }
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