How to concatenate Two 2-byte registers ?
Modbus Register 1 - value1 (16 bits in length, contains bits 0 to 15)
Modbus Register 2 - value2 (16 bits in length, contains bits 16 to 31)
short response_buffer[128]; // contains modbus register values
response_buffer[0] contains value1. response_buffer[1] contains value2.
long result;
/* Is this solution correct ? */
result = ( (long) ( response_buffer[0] ) + (long) (response_buffer[1] << 16) ) ;
/* if above solution is correct, can it be simplified ? */
Modbus Register 2 - value2 (16 bits in length, contains bits 16 to 31)
short response_buffer[128]; // contains modbus register values
response_buffer[0] contains value1. response_buffer[1] contains value2.
long result;
/* Is this solution correct ? */
result = ( (long) ( response_buffer[0] ) + (long) (response_buffer[1] << 16) ) ;
/* if above solution is correct, can it be simplified ? */
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