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I2C with Keil RTX doesn't work

Hi

When I use I2C library without Keil RTX to communicate with I2C EEPROM the program works fine, but when I start the RTX the program stuck at:

while(!Status) Status=I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED); // Test on EV6 and clear it

Somebody know how to fix this?

Ps: uVision3 V3.63 , MDK-ARM V3.24 , RL-ARM V3.40

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