AN3108 datasheet(18/44 Pages) STMICROELECTRONICS

18 / 44 page

STLM75 library firmware

AN3108

18/44

Doc ID 16793 Rev 1

TempSensor::TimeoutTicks API property

The TempSensor structure exports the following public property:

TS_u32

TimeoutTicks;

The TimeoutTick property allows the final application to avoid application block in case of

I2C communication problems. TimeoutTick is the number of g_TempSensorTick to wait

during an I2C communication between the microcontroller and the STLM75 before

considering that an error has occurred and resetting the I2C peripheral.

Warning:

TimeoutTicks must be set to >0 as following ONLY if

g_TempSensorTick is defined as: extern volatile u32

g_TempSensorTick;

in the final application source code,

and it is incremented in a scheduler timer IRQ handler. If you

don't want to use timeout feature, don't configure the

TimeoutTicks property or set it to 0.

The following is an example of TimeoutTicks property:

...

●

File: main.c

int main(void)

{

...

/* configure SysTick timer in order to have a tick each ms */

...

/* configure the Temperature Sensor TimeoutTicks */

pObjTempSensor->TimeoutTicks = 2; /* 2ms:we have a g_TempSensorTick

each millisecond */

...

}

●

File: stm32f10x_it.c

extern volatile u32 g_TempSensorTick;

...

void SysTickHandler(void)

{

// Increment Temperature Sensor tick for Timeout purpose

g_TempSensorTick ++;

AN3108 Datasheet(PDF) 18 Page - STMicroelectronics

AN3108 Datasheet(HTML) 18 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

Datasheet Download

Link URL