* [ECOS] adding a new i2c device
@ 2005-06-15 3:19 clifford.joseph
2005-06-15 8:08 ` [ECOS] " Jani Monoses
0 siblings, 1 reply; 2+ messages in thread
From: clifford.joseph @ 2005-06-15 3:19 UTC (permalink / raw)
To: ecos-discuss
Hi
I am trying to implement an i2c transfer.
I have successfully added the hardware package CYGPKG_IO_I2C to my configuration file. (.ecc)
Iam working on the eb40a evaluation board which has already an i2c device at24c512 eeprom.
I am using arm-elf-gcc version 3.2.1
As described I have added this in my plf_io.h
#define HAL_I2C_EXPORTED_DEVICES \
extern cyg_i2c_bus cyg_i2c_xyzzy_bus; \
extern cyg_i2c_device cyg_i2c_wallclock_ds1307; \
extern cyg_i2c_device cyg_i2c_eeprom;
and in my main.cpp file I have implemented the following function
static cyg_bool
hal_alaia_i2c_bitbang(cyg_i2c_bus* bus, cyg_i2c_bitbang_op op)
{
cyg_bool result = 0;
switch(op)
{
case CYG_I2C_BITBANG_INIT:
{
}
case CYG_I2C_BITBANG_SCL_HIGH:
{
}
..
..
.
..
.
}
return result;
}
I am creating a device by using the Macro
CYG_I2C_DEVICE(cyg_i2c_eeprom, cyg_i2c_xyzzy_bus, 0xA0, 0x00,CYG_I2C_DEFAULT_DELAY);
Am I doing it the way it should be done because I get a compile error
parse error before `.' token
at the line wherever I call this macros.
thank you
clifford
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [ECOS] Re: adding a new i2c device
2005-06-15 3:19 [ECOS] adding a new i2c device clifford.joseph
@ 2005-06-15 8:08 ` Jani Monoses
0 siblings, 0 replies; 2+ messages in thread
From: Jani Monoses @ 2005-06-15 8:08 UTC (permalink / raw)
To: ecos-discuss
> extern cyg_i2c_bus cyg_i2c_xyzzy_bus; \
...
> I am creating a device by using the Macro
>
> CYG_I2C_DEVICE(cyg_i2c_eeprom, cyg_i2c_xyzzy_bus, 0xA0, 0x00,CYG_I2C_DEFAULT_DELAY);
The above macro takes a pointer to cyg_i2c_bus. Try this:
CYG_I2C_DEVICE(cyg_i2c_eeprom, &cyg_i2c_xyzzy_bus, 0xA0, 0x00,CYG_I2C_DEFAULT_DELAY);
Jani
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