RBAPI(bool) i2cmaster_Start(int dev, unsigned char addr, unsigned char rwbit) {
bool result = true;
if (I2C_action[dev] != I2CACT_IDLE)
{
err_SetMsg(ERROR_I2CWRONGUSAGE, "can't start a transaction because I2C%d isn't idle", dev);
return false;
}
I2C_rsInfo[dev].restart = false;
if (I2C_swMode[dev] != I2CSW_DISABLE)
result = i2csw_Start(dev, addr, rwbit, false);
else
{
if (I2C_speedMode[dev] == I2CMODE_HIGHSPEED)
result = i2cmaster_Start1(dev, 0x07, I2C_WRITE); //send high-speed master code
if (result == true) result = i2cmaster_Start1(dev, addr, rwbit);
}
if (result == true)
{
I2C_action[dev] = (rwbit == I2C_WRITE)? I2CACT_MASTERWRITE : I2CACT_MASTERREAD;
I2C_curAddr[dev] = addr;
}
return result;
}
RBAPI(bool) i2cmaster_Start(int dev, unsigned char addr, unsigned char rwbit) {
if (I2C_action[dev] != I2CACT_IDLE)
{
err_SetMsg(ERROR_I2CWRONGUSAGE, "can't start a transaction because I2C%d isn't idle", dev);
return false;
}
I2C_rsInfo[dev].restart = false;
if (I2C_speedMode[dev] == I2CMODE_HIGHSPEED) //&&
if (i2cmaster_Start1(dev, 0x07, I2C_WRITE) == false) //send high-speed code
return false;
return i2cmaster_Start1(dev, addr, rwbit);
}
RBAPI(bool) i2cmaster_WriteLast(int dev, unsigned char val) {
bool result = true;
if (i2cmaster_Write(dev, val) == false) return false; else I2C_action[dev] = I2CACT_IDLE;
// case of I2C RESTART after write
if (I2C_rsInfo[dev].restart == true)
{
I2C_rsInfo[dev].restart = false;
if (I2C_swMode[dev] != I2CSW_DISABLE)
result = i2csw_Start(dev, I2C_rsInfo[dev].addr, I2C_rsInfo[dev].rwbit, true);
else
result = i2cmaster_Start1(dev, I2C_rsInfo[dev].addr, I2C_rsInfo[dev].rwbit);
if (result == true)
{
I2C_action[dev] = (I2C_rsInfo[dev].rwbit == I2C_WRITE)? I2CACT_MASTERWRITE : I2CACT_MASTERREAD;
I2C_count[dev] = I2C_rsInfo[dev].count;
}
return result;
}
// case of I2C STOP after write
if (I2C_swMode[dev] != I2CSW_DISABLE)
i2csw_Stop(dev);
else
{
i2cmaster_SetStopBit(dev);
result = check_STOP_done(dev);
}
return result;
}
RBAPI(bool) i2cmaster_WriteLast(int dev, unsigned char val) {
if (i2cmaster_Write(dev, val) == false) return false; else I2C_action[dev] = I2CACT_IDLE;
if (I2C_rsInfo[dev].restart == true)
{
I2C_rsInfo[dev].restart = false;
if (i2cmaster_Start1(dev, I2C_rsInfo[dev].addr, I2C_rsInfo[dev].rwbit) == false) return false;
I2C_count = I2C_rsInfo[dev].count;
return true;
}
i2cmaster_SetStopBit(dev);
return check_STOP_done(dev);
}
