STM CircleOS forum / 'I2C1' undeclared (first use in this function)

windkum · 2009-01-25 12:17:14

Init code for external JP2 for I2C1, this error was encountered

void I2C1_Configuration(void)
{
I2C_InitTypeDef I2C_InitStructure;

/* I2C1 ENABLE */
I2C_Cmd(I2C1, ENABLE);
/* Enable I2C1 event interrupt */
I2C_ITConfig(I2C2, I2C_IT_EVT | I2C_IT_BUF , ENABLE);
/* I2C1 Init */
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x30;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
// I2C_InitStructure.I2C_ClockSpeed =ClockSpeed ;
I2C_Init(I2C2, &I2C_InitStructure);
}

'I2C1' undeclared (first use in this function)

I2C_Cmd(I2C1, ENABLE); => I2C1 is not undeclared.

could you help me this err?

sjoerd · 2009-01-25 12:24:32

Perhaps I2C1 is disabled in stm32f10x_conf.h in your project

I guess you mean I2C1 here: I2C_ITConfig(I2C2, I2C_IT_EVT | I2C_IT_BUF , ENABLE);
and here: I2C_Init(I2C2, &I2C_InitStructure);

Last edited by sjoerd (2009-01-25 12:24:46)

windkum · 2009-01-25 23:37:23

yes your comment seems right.
As i checked in "stm32f10x_conf.h"
define for I2c1 was remarked. => //#define _I2C1

i modified it => #define _I2C1.

but after modification still same err was happen...

sjoerd · 2009-01-26 04:46:00

Hmm.. strange. When I create a new project, copy/paste your code, change I2C2 to I2C1, and enable it it stm32f10x.conf.h it compiles ok.

Try a 'clean project'..

Francis · 2009-01-26 07:42:21

Check for multiple stm32f10x_conf.h files..

windkum · 2009-01-26 10:00:47

Thanks a lot for your comment.. but still i have a problem..

i tried 2 thing.
1. creat project "stm32-primer-project" in raisonance. and paste my code. suly primerOS was re-builted.
=> I2c1 is not decleared
2. Clean Project.
=> I2c1 is not decleared

...... so I'd like to check 2 point.

1. Primer2 OS is CircleOS that download from wabsite or same as it?

2. this modificatioin is right for enable I2c1 in stm32f10x_conf.h ?
//#define _I2C1
=> #define _I2C1.

windkum · 2009-01-27 00:34:17

I solve this..

thanks for your recommend..

I confusing directory of stm32f10x_conf.h.. ^^;

# 1 2009-01-25 12:17:14 'I2C1' undeclared (first use in this function)

'I2C1' undeclared (first use in this function)

# 2 2009-01-25 12:24:32 'I2C1' undeclared (first use in this function)

Re: 'I2C1' undeclared (first use in this function)

# 3 2009-01-25 23:37:23 'I2C1' undeclared (first use in this function)

Re: 'I2C1' undeclared (first use in this function)

# 4 2009-01-26 04:46:00 'I2C1' undeclared (first use in this function)

Re: 'I2C1' undeclared (first use in this function)

# 5 2009-01-26 07:42:21 'I2C1' undeclared (first use in this function)

Re: 'I2C1' undeclared (first use in this function)

# 6 2009-01-26 10:00:47 'I2C1' undeclared (first use in this function)

Re: 'I2C1' undeclared (first use in this function)

# 7 2009-01-27 00:34:17 'I2C1' undeclared (first use in this function)

Re: 'I2C1' undeclared (first use in this function)

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