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
I can say that I2C works well with RTX (using NXP though)
I'd suggest that you walk two steps away and try to look at the problem from a different viewpoint.
What might get changed by the presence of a RTX ? Typically interrupts. Timer usage.. ? Does that Lib need Interrupts? (I guess..) Do you see a single IRQ ? Any ports mis-set ? Are the priorities of the tasks set correctly ?
I would start with a bare OS with only one task (your program) set to a high prio and let it run. Be arware that the OS wants one timer and its interrupt. And that'S it. Nothing else. Does your task alone (without I2C code) run well?
So just try to get closer to the problem. good luck ! Uli
I lock RTOS (task_lock()) before use the I2C routines.
The I2C routines do not use interrupts, I'm using polling method.
There's just two interrupts on use (USART1_RX and USART2_RX).
I did a "bare OS with only one task" but still not working.
Ps: ARM CORTEX - M3 (STM32F103RBT6)
remove "task_lock()"...what happens?
The program stuck at I2C routine like with task_lock().
then you probably fail to configure i2c correctly. are you shutting down the hardware timer used by RTX, or something? check your RTX_Config.c file to which one is used.