The code below is part of my code to read CAN ID in Rx callback:
tmpp = (((0x07 << 0x1D)|(0x368 << 0x12)) & 0x1FFC0000); //unsigned long long int tmpp - equal to 0xDA00000
if (CAN0_IF2ARB0_ID == tmpp) {
//do some action
}
The problem is that while the 29 bit CAN ID is 0xDA00000, the condition is not true. But when I directly set tmpp as tmpp = 0xDA00000, the program successfully enters the loop. In fact, the calculation tmpp = (((0x07 << 0x1D)|(0x368 << 0x12)) & 0x1FFC0000); seems to have some problem (the value is 0xDA00000, but in Softune, it is not calculated correctly). I would be grateful if you could help me to find the problem. Thanks.
0x07 is an int - perhaps even a 16-bit int. Use at least unsigned long constants for values to be shifted into a 32-bit value.
// tmpp = (((0x07 << 0x1D)|(0x368 << 0x12)) & 0x1FFC0000);
tmpp = ((0x07ul << 0x1D) | (0x368ul << 0x12)) & 0x1FFC0000u;