Programming Guidelines; Main Program; Module Configuration Before Enabling The Module; Initialization Procedure - Texas Instruments OMAP5912 Reference Manual

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I2C Multimaster Peripheral

Programming Guidelines

Serial Interfaces

Step 1: Program the prescaler to obtain an approximately 12-MHz I

ule clock (I2C_PSC = x; this value is to be calculated and is depen-

dent on the system clock frequency).

Step 2: Program the I

= x and I2C_SCLH = x; these values are to be calculated and are de-

pendent on the system clock frequency).

Step 3: Configure its own address (I2C_OA = x).

Step 4: Take the I

C module out of reset (I2C_CON:I2C_EN = 1).

Step 1: Configure the I

Step 2: If using interrupt for transmit/receive data, enable interrupt masks

Step 3: If using DMA for transmit/receive data, enable the DMA (I2C_BUF)

and program the DMA controller.

In master mode, configure the slave address (I2C_SA = x) and the number of

bytes associated with the transfer (I2C_CNT = x).

Poll the bus busy (BB) bit in the I

to 0 (bus not busy), configure START/STOP (I2C_CON:STT / I2C_CON:STP)

condition to initiate a transfer.

Poll the receive data ready interrupt flag bit (RRDY) in the I

(I2C_STAT). Use the RRDY interrupt or the DMA to read the receive data in

the data receive register (I2C_DATA).

C clock to obtain 100K bps or 400K bps (I2C_SCLL

C mode register (I2C_CON) bits.

C status register (I2C_STAT). If it is cleared

C status register

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