Author: jsuijs
Date: Sun Jan 4 04:45:31 2009
New Revision: 722
Modified:
trunk/include/peripheral/i2c/i2c_level1.jal
Log:
You now can use a one-byte tx buffer if you realy want to.
Modified: trunk/include/peripheral/i2c/i2c_level1.jal
==============================================================================
--- trunk/include/peripheral/i2c/i2c_level1.jal (original)
+++ trunk/include/peripheral/i2c/i2c_level1.jal Sun Jan 4 04:45:31 2009
@@ -8,11 +8,22 @@
--
-- Description: Level1 implementation of I2C (single) master.
--
+-- User must define the rx and tx buffer like:
+-- var byte i2c_tx_buffer[10]
+-- var byte i2c_rx_buffer[10]
+--
+-- tx_buffer[] should be at least 2 bytes long to support
i2c_receive_wordaddr.
+-- if you desperatly want to use a 1-byte tx buffer, define (besides the
buffer):
+-- const single_byte_tx_buffer = 1
+--
-- TODO:
--
-if (count(i2c_tx_buffer) < 2) then
- pragma error -- "Please make i2c_tx_buffer[] at least 2 long"
+-- some validations
+if (defined(single_byte_tx_buffer) == false) then
+ if (count(i2c_tx_buffer) < 2) then
+ pragma error -- "Please make i2c_tx_buffer[] at least 2 long"
+ end if
end if
--
-----------------------------------------------------------------------------
@@ -71,6 +82,7 @@
end function
+if (defined(single_byte_tx_buffer) == false) then -- conditional compile
--
-----------------------------------------------------------------------------
-- i2c_receive_wordaddr - send a word address and receive a string from an
i2c slave
--
-----------------------------------------------------------------------------
@@ -81,3 +93,4 @@
return i2c_send_receive(i2c_address, 2, i2c_rx_count)
end function
+end if -- conditional compile
\ No newline at end of file
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