I2C Read Buffer

Target Category: Arduino, Cortex M3, Delfino, F280x, F281X, MSP430, Linux Raspberry Pi,MSP430, Piccolo, STM32

Target Sub-Category: I2C

Description: The I2C Read Buffer block is used to extract data from the I2C read buffer. You can choose the type of data to be extracted.

Use the appropriate I2C Config blocks to configure the unit.

Block Output: Selects the function of the block.

Bus Busy: Indicates whether the bus is transmitting data.
Data: Extracts the data from the buffer determined by Data Type.
Port Status: Extracts the hardware status register determined by the Port option.
Receive Queue Empty: 0 if not empty; 1 if empty.
Receive Queue Overrun: 0 if not overrun; 1 if overrun.
Receive Queue Length: Returns the value of the number of data bytes in the receive queue.
Receive Queue Max Length: Returns the maximum length of the receive queue.
Transmit Queue Full: 0 if not full; 1 if full.
Transmit Queue Length: Returns the value of the number of data bytes in the transmit queue.
Transmit Queue Max Length: Returns the maximum length of the transmit queue.

Data Type: Selects the data type.

char: Smallest addressable unit. On the MSP, it is 8 bits; on the C2000, it is 16 bits.
long: 32 bits.
short: 16 bits.

Port: Specifies the hardware unit. Click here for Arduino pin mapping. Click here for Raspberry Pi pin mapping.