Kuvée / Base_I2C_Device

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Base_I2C_Device.cpp@0:fa683f936086, 2015-05-06 (annotated)

Committer:
glansberry
Date:
Wed May 06 02:49:13 2015 +0000
Revision:
0:fa683f936086
Child:
1:700cce0a0ca8
Initial release of base class for handling I2C devices

Who changed what in which revision?

UserRevisionLine numberNew contents of line
glansberry 0:fa683f936086 1 #include "Base_I2C_Device.h"
glansberry 0:fa683f936086 2
glansberry 0:fa683f936086 3
glansberry 0:fa683f936086 4
glansberry 0:fa683f936086 5
glansberry 0:fa683f936086 6 uint8_t Base_I2C_Device::ReadRegisterByte(uint8_t reg)
glansberry 0:fa683f936086 7 {
glansberry 0:fa683f936086 8 char temp_write[1];
glansberry 0:fa683f936086 9 char temp_read[1];
glansberry 0:fa683f936086 10
glansberry 0:fa683f936086 11 temp_write[0] = reg;
glansberry 0:fa683f936086 12 i2c.write(m_address, temp_write, 1, false); // no stop (unsure)
glansberry 0:fa683f936086 13 i2c.read(m_address, temp_read, 1, 0);
glansberry 0:fa683f936086 14
glansberry 0:fa683f936086 15 return (uint8_t)temp_read[0];
glansberry 0:fa683f936086 16 }
glansberry 0:fa683f936086 17 uint16_t Base_I2C_Device::ReadRegisterWord(uint8_t reg)
glansberry 0:fa683f936086 18 {
glansberry 0:fa683f936086 19 char temp_write[1];
glansberry 0:fa683f936086 20 char temp_read[2];
glansberry 0:fa683f936086 21
glansberry 0:fa683f936086 22 temp_write[0] = reg;
glansberry 0:fa683f936086 23 i2c.write(m_address, temp_write, 1, false); // no stop (unsure)
glansberry 0:fa683f936086 24 i2c.read(m_address, temp_read, 2, 0);
glansberry 0:fa683f936086 25
glansberry 0:fa683f936086 26 return (((uint16_t)temp_read[0]) << 8) | (uint16_t)temp_read[1];
glansberry 0:fa683f936086 27
glansberry 0:fa683f936086 28 }
glansberry 0:fa683f936086 29 int Base_I2C_Device::WriteRegister(uint8_t reg, uint8_t value)
glansberry 0:fa683f936086 30 {
glansberry 0:fa683f936086 31 char temp_write[2];
glansberry 0:fa683f936086 32
glansberry 0:fa683f936086 33 temp_write[0] = reg;
glansberry 0:fa683f936086 34 temp_write[1] = value; //check order of these (endianness)
glansberry 0:fa683f936086 35 i2c.write(m_address, temp_write, 2, 0);
glansberry 0:fa683f936086 36 return 0;
glansberry 0:fa683f936086 37 }
glansberry 0:fa683f936086 38
glansberry 0:fa683f936086 39 int Base_I2C_Device::WriteRegister(uint8_t reg, uint16_t value)
glansberry 0:fa683f936086 40 {
glansberry 0:fa683f936086 41 char temp_write[3];
glansberry 0:fa683f936086 42
glansberry 0:fa683f936086 43 temp_write[0] = reg;
glansberry 0:fa683f936086 44 temp_write[1] = value>>8;
glansberry 0:fa683f936086 45 temp_write[2] = (value & 0xFF);
glansberry 0:fa683f936086 46 i2c.write(m_address, temp_write, 3, 0);
glansberry 0:fa683f936086 47 return 0;
glansberry 0:fa683f936086 48 }