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I2CIN

Syntax​

I2CIN pin, slaveADDR, [opt1, [... opt5,]] [ InputList ] InputList  =  variable |  stringname$ \count  | arrayname \count   [, InputList]

Description​

I2CIN will read a series of bytes from an I2C slave device.  pin  is any expression defining the SDA pin to use.  pin+1 will be designated the SCL pin.  slaveADDR will select a device on the I2C bus. Up to 5 optional byte values may be sent out prior to reading the InputList. After that a series of bytes will be read from the slave to fill the InputList.  The InputList enclosed in [] can contain variables or strings.  When using a string a count must be specified defines the number of bytes to be copied into the string. I2C is a byte oriented bus, so each transaction will either send a byte value (0 to 255) or receive a byte for each element of the InputList. Data is shifted in at 380 Kbits/sec.

Example​

DIM A$(10)

 I2CIN 1,$30,$10, [A$ \10]      ' read 10 bytes
from
slave $30 register $10 connected on pins 1,2

I2CIN 5,$40,$20, [X]
  ' read a single byte from slave $40 register $20 on pins 5,6

Differences from other BASICs​

  • PBASIC output formatting not supported
  • PBASIC secondADDR specification is seperated by , rather than \
  • no equivalent in Visual BASIC

See also​