Read carefully the C-language program in your course handouts (page 127-129). In this program, you are told how to set various serial port parameters. Based on the knowledge you gain here, answer the following by writing appropriate C-language instruction with single line comments to achieve stated task.
|S.No.||Task||C-Language Instruction with single line comments|
|1||Write a single line of code to set the com pointer variable to COM port 3.|| outportb ((*com)+3)
|2||Write a single line of code to set the size of Word Length to 8-bits to be used in serial communication for data transmission.|| outportb ((*com)+3,0×03)
|3||Write a single line of code to set the size of Stop bits equals 3 in serial port communication.|| In serial communication we cannot sets stop bit to 3.Only we can set stop bit 1 or 1.5 or 2 through setting.
|4||Write a single line of code to turn ON the parity bit and use Even parity.||
|5||In the following piece of code, the Baud rate being used is 1200. Modify it in a way such that we shall have Baud Rate of 2400.
outportb ( (*com),0x60);
outportb( (*com) +1, 0x00);