An improved version of mbed's I2C class.
Dependents: acd52832_Humidity_Temp_Example BB acnSensa_LIS aconnoCellularGnss ... more
aconno_i2c.cpp
- Committer:
- jurica238814
- Date:
- 2018-07-19
- Revision:
- 5:54ba0e4f13ae
- Parent:
- 4:db46d6bb60f0
- Child:
- 6:4d1b387c12c3
File content as of revision 5:54ba0e4f13ae:
/* * I2C library made by Jurica Resetar @ aconno * 2017 * More info @ aconno.de * jurica_resetar@yahoo.com * All right reserved * */ #include "aconno_i2c.h" /** * [aconno_i2c::aconno_i2c description] * @param i2c [description] * @param address [description] */ aconno_i2c::aconno_i2c(I2C *i2c, char address){ this->i2c = i2c; i2cAddress = address; } /** * [aconno_i2c::writeToReg description] * @param regAddress [description] * @param data [description] * @param len [description] * @return [description] */ uint8_t aconno_i2c::writeToReg(char regAddress, char *data, int len){ uint8_t success; /* 0 on success (ack), non-0 on failure (nack) */ char dataToSend[len+1]; dataToSend[0] = regAddress; memcpy(dataToSend+1, data, len); // R/W bit is set low for a write command success = i2c->write(i2cAddress & 0xFE, dataToSend, len + 1); return success; } /** * [aconno_i2c::readFromReg description] * @param regAddress [description] * @param dataBuffer [description] * @param len [description] * @return [description] */ uint8_t aconno_i2c::readFromReg(char regAddress, char *dataBuffer, int len){ uint8_t success; /* 0 on success (ack), non-0 on failure (nack) */ char regAddr = regAddress; i2c->write(i2cAddress & 0xFE, ®Addr, 1); // R/W bit is set low for a write command success = i2c->read(i2cAddress | 0x01, dataBuffer, len); // R/W bit is set high for a read command return success; } /** * This method is used with sendCommand(char *command, uint8_t len) method when delay between command * and response from the slave is required * @param dataBuffer [description] * @param len [description] * @return [description] */ uint8_t aconno_i2c::readBus(char *dataBuffer, int len){ uint8_t success; /* 0 on success (ack), non-0 on failure (nack) */ success = i2c->read(i2cAddress | 0x01, dataBuffer, len); // R/W bit is set high for a read command return success; } /** * This method is used to send commands to I2C Device. * Ex. send 2B command to Si7006 to get Device ID. * @param command [description] * @param len [description] * @param response [description] * @param responseLen [description] * @param repeated [description] * @return 0 on success (ack), non-0 on failure (nack) */ uint8_t aconno_i2c::sendCommand(char *command, uint8_t len, char *response, uint8_t responseLen, bool repeated) { uint8_t success; /* 0 on success (ack), non-0 on failure (nack) */ // R/W bit is set low for a write command i2c->write(i2cAddress & 0xFE, command, len, repeated); // R/W bit is set high for a read command success = i2c->read(i2cAddress | 0x01, response, responseLen); return success; } /** * [aconno_i2c::sendCommand description] * @param command [description] * @param len [description] * @return [description] */ uint8_t aconno_i2c::sendCommand(char *command, uint8_t len){ uint8_t success; /* 0 on success (ack), non-0 on failure (nack) */ success = i2c->write(i2cAddress & 0xFE, command, len); return success; }