Converting canbus data to an integer

[sybrenbos]

i have the following value that i want to extract an integer value from but i can't find out how

CanMsg const msg = CAN.read();
Serial.println(msg);

Output:
[010] (2) : 01D0

[UKHeliBob]

Welcome to the forum

Which integer do you want to extract and will it always be in the same place in the message and the same length ?

[sybrenbos]

i want to convert the hexadecimal 01d0 to an int and it will always be in the same place

[sherzaad]

How do I parse a CAN message into integers?

I thought I'd share my findings here in case someone in the future has the same problem as me. If you want to extract the 8 bytes of data from the CAN message you can do so with this bit of code: if (CAN.available()) { CanMsg const msg = CAN.read(); Serial.print(msg.data[0],HEX); Serial.print(" "); Serial.print(msg.data[1],HEX); Serial.print(" "); Serial.print(msg.data[2],HEX); Serial.print(" "); Serial.print(msg.data[3],HEX); Serial.print(" "); Serial.print(msg.d…

what you have NOT made clear though is whether your 'integer' value is 8 or 16 bits long.

if 8 bit the link I share has the solution.

if 16 bit the you need to know which of the 2 bytes is the MSbyte.

@sybrenbos

[010] (2) : 01 D0

so for example assuming '01' is MSByte then using this snippet will generate the 16 bit integer.

uint16_t val = msg.data[0];

val = (val<<8)|msg.data[1];

Serial.print(val, DEC);

hope that helps

[sybrenbos]

that works now, thank you very much