Hi,
I am experiencing trouble passing a 32-bit variable to a subroutine. Here's a snippet of the code:
void mainChargingRoutine(void)
{
static uint32_t firstBattVal;
......
analysisComplete = chargeRateAnalysis(firstBattVal, chargingMins, chargingTimer);
}
uint16_t chargeRateAnalysis(uint32_t begBattVal, uint16_t chrgMins, int16_t chrgTimer)
{
//do stuff
}
What is happening is that when the function "mainChargingRoutine" calls "chargeRateAnalysis", it passes the 32-bit local variable called "firstBattVal." Inside the "chargeRateAnalysis" function its value should be available in the begBattVal, which is also declared as an unsigned 32-bit value.
However, the problem is that when I use the debugger to check the values of these variables, I see that as soon as the "chargeRateAnalysis" function is called, the value for begBattVal is being truncated to a 16 bit version of "firstBattVal."
Since it is declared as an unsigned 32-bitt variable in all the relavent locations, why would it be truncated like that?
Let me know if I can provide any more information to help solve this question.
Thanks!
