Hi All,
I am new to system verilog. I followed this tutorial[1] to create my own message deserializer.
The stream is in little endian byte ordering. The struct is a simple 2 bytes size and 1 byte count.
It is ok if streaming field by field but it doesn’t work if directly stream to struct.
Please check the code[2] and run output[3].
Please kindly advise.
Regards,
Ken
[2] code:
module stream;
typedef struct {
shortint size; // 2 bytes
byte count; // 1 bytes
} packet;
logic [23:0] data = {23'h1c0001}; // size = 28, count = 1, little endian
initial
begin
static packet msg;
$display("stream field by field:");
$display("size = %d", {<<8{data[23:8]}});
$display("count = %d", {<<8{data[7:0]}});
$display("stream to struct:");
{>>{msg}} = {<<8{data[23:0]}}; // please advise how to unpack the data to msg struct
$display("msg.size = %d", msg.size);
$display("msg.count = %d", msg.count);
end
endmodule
[3]
Loading work.stream
run