Fujitsu MB85RCxx I2C FRAM access library
MB85RCxx_I2C.cpp
- Committer:
- MACRUM
- Date:
- 2017-04-22
- Revision:
- 1:b4cd8ba57300
- Parent:
- 0:f7119e0aa405
File content as of revision 1:b4cd8ba57300:
/** ****************************************************************************** * @file MB85RCxx_I2C.cpp * @author Toyomasa Watarai * @version V1.0.0 * @date 22 April 2017 * @brief MB85RCxx_I2C class implementation ****************************************************************************** * @attention * * 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 THE * AUTHORS OR COPYRIGHT HOLDERS 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. */ #include "mbed.h" #include "MB85RCxx_I2C.h" MB85RCxx_I2C::MB85RCxx_I2C(PinName sda, PinName scl, char slave_adr) : _i2c_p(new I2C(sda, scl)), _i2c(*_i2c_p), _address(slave_adr) { _i2c.frequency(400000); } MB85RCxx_I2C::~MB85RCxx_I2C() { if (NULL != _i2c_p) delete _i2c_p; } int MB85RCxx_I2C::read_device_id(char* device_id) { _i2c.write(0xF8, &_address, 1, true); _i2c.read(0xF9, device_id, 3); return (device_id[1] & 0x0F); } void MB85RCxx_I2C::read(uint32_t address, char *data, uint32_t length) { char byte_address[2]; char i2c_adrs = (_address | ((address >> 15) & 0x02)); byte_address[0] = ((address >> 8) & 0xFF); byte_address[1] = ((address >> 0) & 0xFF); _i2c.write(i2c_adrs, byte_address, 2, true); _i2c.read(i2c_adrs, data, length); } void MB85RCxx_I2C::write(uint32_t address, char *data, uint32_t length) { char byte_address[2]; char i2c_adrs = (_address | ((address >> 15) & 0x02)); byte_address[0] = ((address >> 8) & 0xFF); byte_address[1] = ((address >> 0) & 0xFF); _i2c.write(i2c_adrs, byte_address, 2, true); for (uint32_t i = 0; i < length; i++) { _i2c.write(*data++); } } void MB85RCxx_I2C::write(uint32_t address, char data) { char byte_address[2]; char i2c_adrs = (_address | ((address >> 15) & 0x02)); byte_address[0] = ((address >> 8) & 0xFF); byte_address[1] = ((address >> 0) & 0xFF); _i2c.write(i2c_adrs, byte_address, 2, true); _i2c.write(data); } void MB85RCxx_I2C::fill(uint32_t address, uint8_t data, uint32_t length) { char byte_address[2]; char i2c_adrs = (_address | ((address >> 15) & 0x02)); byte_address[0] = ((address >> 8) & 0xFF); byte_address[1] = ((address >> 0) & 0xFF); _i2c.write(i2c_adrs, byte_address, 2, true); for (uint32_t i = 0; i < length; i++) { _i2c.write(data); } }