Posted on February 23, 2016 at 22:56
Hello all,
I'm trying to get both I2C peripherals to work on my STM32F0308 - Discovery board. I am using OpenSTM32 toolchain with Eclipse Mars.
I downloaded the MxCube example projects for the F0 and loaded the I2C example with interrupts. To initialize both I2C peripherals, I tried to modify theHAL_I2C_MspInit() functionin the following manner:
void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
{
if (hi2c->Instance == I2C1)
{
// Do stuff for I2C1
}
else
{
// Do stuff for I2C2
}
}
So here is my problem. In my initilisation, I have the following line;
GPIO_InitStruct.Pin = I2Cx_SCL_PIN;
When I go to the declaration ofI2Cx_SCL_PIN, it points to the main.h file. So I changed the I2Cx portion toI2C1, and dupliacted all the #define to have I2C2 instances aswell. However, when I go back to my code and change the line to:
GPIO_InitStruct.Pin = I2C1_SCL_PIN;
Eclipse complains and says that I2C1_SCL_PIN isn't declared. When I change it back to I2C
x_SCL_PIN and go to the declaration, it goes to and highlights I2C
1_SCL_PIN. Also, if I delete the #define altogether, it still points to something inside my main.h file, even though the #define no longer exists.
Has anyone encountered similar problems and figured out why this is happening?
#init #i2c #hal #discovery #f0
