public void writeInt(int val)
{
set_number(val);
// send clear, then 4 bytes
I2CDevice.I2CTransaction[] write = new I2CDevice.I2CTransaction[] {
I2CDevice.CreateWriteTransaction(new byte[] { 0x82, m_data[0], m_data[1], m_data[2], m_data[3] })
};
m_display.Execute(write, 1000);
}