I2CConfig error : unknown type name 'I2CConfig'

[Cyrille]

Hi,
I have the following error during compilation : "unknown type name 'I2CConfig'"

Code: Select all

#include "ch.h"
#include "hal.h"
#include "Init.h"
....
static I2CConfig i2ccfg = {0,0b100100,180,37};

I have tried to include i2c.h and i2c_lld.h but I have the same error message (the I2CConfig typedef struct is defined in i2c_lld.h)

I don't understand where is the pb.

I use ChibiOS 2.2.0 on STM32 platform.

Thanks
Cyrille

[Giovanni]

Hi,

The I2C driver is not implemented in version 2.2.x, there is an experimental driver on a development branch, if you want to experiment with it please read this thread:

viewtopic.php?f=3&t=25

The driver is experimental and not officially supported yet but the author is very helpful.

Giovanni

[lawrenceais]

Hello,
I got similar error in 2.4.2. Does it support i2c?

When I try to define the i2c constant, it come out this error.

Code: Select all

/* I2C interface #1 */
static const I2CConfig i2cfg1 = {
    OPMODE_I2C,
    400000,
    FAST_DUTY_CYCLE_2,
};

----------------------------------
Error[Pe020]: identifier "I2CConfig" is undefined D:\svn\RTOS\chibios\tags\ver_2.4.2\demos\ARMCM4-STM32F407-DISCOVERY\main.c 117
----------------------------------

I try to add these 2 files in platform(os/hal/platform/i2c_lld.h. i2c_lld.c). It did not help.

[Giovanni]

Is I2C enabled in halconf.h?

Giovanni

[lawrenceais]

oh.....halconf.h .....

Code: Select all

/**
 * @brief   Enables the I2C subsystem.
 */
#if !defined(HAL_USE_I2C) || defined(__DOXYGEN__)
#define HAL_USE_I2C                 TRUE
#endif

Change this to TRUE and make it work. Thank you.