Toyomasa Watarai / MB85RCxx_I2C

Fujitsu MB85RCxx I2C FRAM access library

Dependents:   MB85RCxx_hello

MB85RCxx_I2C.cpp@1:b4cd8ba57300, 2017-04-22 (annotated)

Committer:
MACRUM
Date:
Sat Apr 22 12:30:56 2017 +0000
Revision:
1:b4cd8ba57300
Parent:
0:f7119e0aa405 
Modified header info for doxygen

Who changed what in which revision?

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MACRUM 0:f7119e0aa405 1 /**
MACRUM 0:f7119e0aa405 2 ******************************************************************************
MACRUM 0:f7119e0aa405 3 * @file MB85RCxx_I2C.cpp
MACRUM 0:f7119e0aa405 4 * @author Toyomasa Watarai
MACRUM 0:f7119e0aa405 5 * @version V1.0.0
MACRUM 0:f7119e0aa405 6 * @date 22 April 2017
MACRUM 0:f7119e0aa405 7 * @brief MB85RCxx_I2C class implementation
MACRUM 0:f7119e0aa405 8 ******************************************************************************
MACRUM 0:f7119e0aa405 9 * @attention
MACRUM 0:f7119e0aa405 10 *
MACRUM 0:f7119e0aa405 11 * Permission is hereby granted, free of charge, to any person obtaining a copy
MACRUM 0:f7119e0aa405 12 * of this software and associated documentation files (the "Software"), to deal
MACRUM 0:f7119e0aa405 13 * in the Software without restriction, including without limitation the rights
MACRUM 0:f7119e0aa405 14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
MACRUM 0:f7119e0aa405 15 * copies of the Software, and to permit persons to whom the Software is
MACRUM 0:f7119e0aa405 16 * furnished to do so, subject to the following conditions:
MACRUM 0:f7119e0aa405 17 *
MACRUM 0:f7119e0aa405 18 * The above copyright notice and this permission notice shall be included in
MACRUM 0:f7119e0aa405 19 * all copies or substantial portions of the Software.
MACRUM 0:f7119e0aa405 20 *
MACRUM 0:f7119e0aa405 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
MACRUM 0:f7119e0aa405 22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
MACRUM 0:f7119e0aa405 23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
MACRUM 0:f7119e0aa405 24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
MACRUM 0:f7119e0aa405 25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
MACRUM 0:f7119e0aa405 26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
MACRUM 0:f7119e0aa405 27 * THE SOFTWARE.
MACRUM 0:f7119e0aa405 28 */
MACRUM 0:f7119e0aa405 29 #include "mbed.h"
MACRUM 0:f7119e0aa405 30 #include "MB85RCxx_I2C.h"
MACRUM 0:f7119e0aa405 31
MACRUM 0:f7119e0aa405 32 MB85RCxx_I2C::MB85RCxx_I2C(PinName sda, PinName scl, char slave_adr)
MACRUM 0:f7119e0aa405 33 :
MACRUM 0:f7119e0aa405 34 _i2c_p(new I2C(sda, scl)),
MACRUM 0:f7119e0aa405 35 _i2c(*_i2c_p),
MACRUM 0:f7119e0aa405 36 _address(slave_adr)
MACRUM 0:f7119e0aa405 37 {
MACRUM 0:f7119e0aa405 38 _i2c.frequency(400000);
MACRUM 0:f7119e0aa405 39 }
MACRUM 0:f7119e0aa405 40
MACRUM 0:f7119e0aa405 41 MB85RCxx_I2C::~MB85RCxx_I2C()
MACRUM 0:f7119e0aa405 42 {
MACRUM 0:f7119e0aa405 43 if (NULL != _i2c_p)
MACRUM 0:f7119e0aa405 44 delete _i2c_p;
MACRUM 0:f7119e0aa405 45 }
MACRUM 0:f7119e0aa405 46
MACRUM 0:f7119e0aa405 47 int MB85RCxx_I2C::read_device_id(char* device_id)
MACRUM 0:f7119e0aa405 48 {
MACRUM 0:f7119e0aa405 49 _i2c.write(0xF8, &_address, 1, true);
MACRUM 0:f7119e0aa405 50 _i2c.read(0xF9, device_id, 3);
MACRUM 0:f7119e0aa405 51
MACRUM 0:f7119e0aa405 52 return (device_id[1] & 0x0F);
MACRUM 0:f7119e0aa405 53 }
MACRUM 0:f7119e0aa405 54
MACRUM 0:f7119e0aa405 55 void MB85RCxx_I2C::read(uint32_t address, char *data, uint32_t length)
MACRUM 0:f7119e0aa405 56 {
MACRUM 0:f7119e0aa405 57 char byte_address[2];
MACRUM 0:f7119e0aa405 58 char i2c_adrs = (_address | ((address >> 15) & 0x02));
MACRUM 0:f7119e0aa405 59
MACRUM 0:f7119e0aa405 60 byte_address[0] = ((address >> 8) & 0xFF);
MACRUM 0:f7119e0aa405 61 byte_address[1] = ((address >> 0) & 0xFF);
MACRUM 0:f7119e0aa405 62 _i2c.write(i2c_adrs, byte_address, 2, true);
MACRUM 0:f7119e0aa405 63 _i2c.read(i2c_adrs, data, length);
MACRUM 0:f7119e0aa405 64 }
MACRUM 0:f7119e0aa405 65
MACRUM 0:f7119e0aa405 66 void MB85RCxx_I2C::write(uint32_t address, char *data, uint32_t length)
MACRUM 0:f7119e0aa405 67 {
MACRUM 0:f7119e0aa405 68 char byte_address[2];
MACRUM 0:f7119e0aa405 69 char i2c_adrs = (_address | ((address >> 15) & 0x02));
MACRUM 0:f7119e0aa405 70
MACRUM 0:f7119e0aa405 71 byte_address[0] = ((address >> 8) & 0xFF);
MACRUM 0:f7119e0aa405 72 byte_address[1] = ((address >> 0) & 0xFF);
MACRUM 0:f7119e0aa405 73 _i2c.write(i2c_adrs, byte_address, 2, true);
MACRUM 0:f7119e0aa405 74 for (uint32_t i = 0; i < length; i++) {
MACRUM 0:f7119e0aa405 75 _i2c.write(*data++);
MACRUM 0:f7119e0aa405 76 }
MACRUM 0:f7119e0aa405 77 }
MACRUM 0:f7119e0aa405 78
MACRUM 0:f7119e0aa405 79 void MB85RCxx_I2C::write(uint32_t address, char data)
MACRUM 0:f7119e0aa405 80 {
MACRUM 0:f7119e0aa405 81 char byte_address[2];
MACRUM 0:f7119e0aa405 82 char i2c_adrs = (_address | ((address >> 15) & 0x02));
MACRUM 0:f7119e0aa405 83
MACRUM 0:f7119e0aa405 84 byte_address[0] = ((address >> 8) & 0xFF);
MACRUM 0:f7119e0aa405 85 byte_address[1] = ((address >> 0) & 0xFF);
MACRUM 0:f7119e0aa405 86 _i2c.write(i2c_adrs, byte_address, 2, true);
MACRUM 0:f7119e0aa405 87 _i2c.write(data);
MACRUM 0:f7119e0aa405 88 }
MACRUM 0:f7119e0aa405 89
MACRUM 0:f7119e0aa405 90 void MB85RCxx_I2C::fill(uint32_t address, uint8_t data, uint32_t length)
MACRUM 0:f7119e0aa405 91 {
MACRUM 0:f7119e0aa405 92 char byte_address[2];
MACRUM 0:f7119e0aa405 93 char i2c_adrs = (_address | ((address >> 15) & 0x02));
MACRUM 0:f7119e0aa405 94
MACRUM 0:f7119e0aa405 95 byte_address[0] = ((address >> 8) & 0xFF);
MACRUM 0:f7119e0aa405 96 byte_address[1] = ((address >> 0) & 0xFF);
MACRUM 0:f7119e0aa405 97 _i2c.write(i2c_adrs, byte_address, 2, true);
MACRUM 0:f7119e0aa405 98 for (uint32_t i = 0; i < length; i++) {
MACRUM 0:f7119e0aa405 99 _i2c.write(data);
MACRUM 0:f7119e0aa405 100 }
MACRUM 0:f7119e0aa405 101 }