Problem with i2c

[joro800]

Hi, i write i2c address scanner, stm32f303 disco stuck in loop. Maby wait for TC Transfer Complete flag, no way out anyway.?


Loop from .lst file

L__I2Cx_Write77:
L__I2Cx_Write46:
; i start address is: 8 (R2)
; I2C_BASE start address is: 4 (R1)
; ptr start address is: 12 (R3)
; count start address is: 0 (R0)
; count end address is: 0 (R0)
; ptrdata start address is: 28 (R7)
; ptrdata end address is: 28 (R7)
; I2C_BASE start address is: 4 (R1)
; I2C_BASE end address is: 4 (R1)
; i start address is: 8 (R2)
; i end address is: 8 (R2)
0x0358 0x681D LDR R5, [R3, #0]
0x035A 0xF3C50440 UBFX R4, R5, #1, #1
0x035E 0x2C00 CMP R4, #0
0x0360 0xD0FA BEQ L__I2Cx_Write77

[filip]

Hi,

Can you please provide more details about your issue, like hardware setup and software example ?

Regards,
Filip.

[joro800]

This is example, trying to break loop with NACK interrupt, but program returns again in loop, even when restarting i2c with PE bit.

[filip]

Hi,

I'm not able to open the RAR file, could you check it please ?

Regards,
Filip.

[joro800]

[joro800]

Hi Filip. Do you check the file's?

[petar.suknjaja]

Hi,

I've tried the simple EEPROM example from the compiler, which uses the Hardware I2C library, on the EasyMX PRO V7 for STM32 and it runs without problems.

I would suggest you to try a different approach in creating the I2C scanner, using the integrated routines such as I2Cn_Is_Idle.

Consult the Help Section regarding the I2C.

Kind regards,

Petar