PIC

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Pic 18F452: I2C Programming W/O interrupts

(Remember to set directon SCK/SDA ports)

Initialization

  1. Enable Serial Bit = 1 (SSPEN=SSPCON<5>)
  2. Synchronous Serial Port Mode Select Bits = 1011 (SSPM3-SSPM0=SSPCON<3:0>

Common Start

  1. Start Enable Bit = 1 ( SEN=SSPCON2<0>)
  2. DelayMs(1)
  3. Load Address into SSPBUF
  4. Test Buffer Full status bit (BF=SSPSTAT<0>)
    1. loop until buffer bit is cleared
  5. Test acknowledge bit (ACK=SSPCON2<6>)
    1. if not acknowleded, abort
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