Diff: i2c_master.cpp

Revision:

0:0af6c7cf0ed3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/i2c_master.cpp	Thu Jul 11 09:35:55 2019 +0000
@@ -0,0 +1,60 @@
+#include "mbed.h"
+#include "i2c_master.h"
+
+I2C_Master::I2C_Master(PinName sda, PinName scl, uint32_t frequency) : 
+    m_i2c_sensor(sda, scl)
+{
+    
+    m_i2c_sensor.frequency(frequency);
+}
+
+void        I2C_Master::i2c_write(uint8_t i2c_address, uint8_t slave_address, const uint8_t data)
+{
+    char writeArray[2] = {slave_address, data};
+    m_i2c_sensor.write(i2c_address, writeArray, 2, false);
+}
+
+void        I2C_Master::i2c_writeBits(uint8_t i2c_address, uint8_t slave_address, const uint8_t data, uint8_t mask)
+{
+    char current_value;
+    char writeArray[2] = {slave_address, data};
+
+    //Get current value of desired register and mask it with mask-value
+    current_value = i2c_read(i2c_address, slave_address);
+    current_value &= ~mask;
+
+    //Combine Data with the new data (additionaly masking the data) and send it to the Sensor
+    writeArray[1] = current_value | (data & mask);
+
+    m_i2c_sensor.write(i2c_address, writeArray, 2, false);
+}
+
+void        I2C_Master::i2c_readSeries(uint8_t i2c_address, uint8_t slave_address, uint8_t *data, uint8_t length)
+{
+    char *data_array;
+    data_array = reinterpret_cast<char*>(data);
+
+    const char temp_address = slave_address;
+
+    m_i2c_sensor.write(i2c_address, &temp_address, 1, true);
+    m_i2c_sensor.read(i2c_address, data_array,length, false);
+}
+
+uint8_t     I2C_Master::i2c_read(uint8_t i2c_address, uint8_t slave_address)
+{
+    char data;
+    const char temp_address = slave_address;
+    m_i2c_sensor.write(i2c_address, &temp_address, 1, true);
+    m_i2c_sensor.read(i2c_address, &data, 1, false);
+    return data;
+}
+
+uint8_t     I2C_Master::i2c_readBits(uint8_t i2c_address, uint8_t slave_address, uint8_t mask)
+{
+    char data;
+    const char temp_address = slave_address;
+    m_i2c_sensor.write(i2c_address, &temp_address, 1, true);
+    m_i2c_sensor.read(i2c_address, &data, 1, false);
+    return data & mask;
+}
+