Program Example For Uart - Fujitsu F2MC-8L F202RA Hardware Manual

13.7

Program Example for UART

This section provides program example for UART.
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Program Example for UART
● Program specifications
• Serial data transfer is implemented using the UART communication functions.
• The P30/UCK/SCK, P31/UO/SO, and P32/UI/SI pins are used for communication.
• The transfer rate is set to 300 bps using the internal baud rate generator.
• 13 is transmitted from the UO pin, and data is received by interrupts.
H
• The baud rate is the oscillation frequency (F
cycle = 4/F
● Coding example
PDR3
DDR3
SSEL
SMC
SRC
SSD
SIDR
SODR
UPC
ILR2
INT_V
IRQ6
IRQ5
INT_V
;--------------------Main program---------------------------------------------------------------------------
). The clock divider is 2.5. (1/375 bps = 8320 t
CH
EQU 000CH
EQU 000DH
EQU 003BH
EQU 0028H
EQU 0029H
EQU 002AH
EQU 002BH
EQU 002BH
EQU 002CH
EQU 007CH
DSEG ABS
ORG 0FFEEH
DW WARI2
DW WARI1
ENDS
CSEG
:
CLRI
MOV ILR2,#11101011B
MOV UPC,#11111010B
MOV SSEL,#00000000B ; Select UART.
MOV DDR3,#00000000B ; Set the UI pin as the input pin.
MOV SMC,#01011011B
= 12.5 MHz) at the maximum gear speed (1 instruction
CH
)
INST
; Port data register address
; Port direction register address
; Serial selection register address
; Serial mode control register address
; Serial rate control register address
; Serial status and data register address
; Serial input data register address
; Serial output data register address
; Clock divider selection register address
; Interrupt level setting register address
; [DATA SEGMENT]
; Reception interrupt vector setting
; Transmission interrupt vector setting
; [CODE SEGMENT]
; The stack pointer (SP) and related components have to be
initialized.
; Disable interrupts.
; Set an interrupt level (level 1).
; Allow operation with the clock whose frequency is divided
by 2.5.
; Set non-parity, the number of stop bits 1, and operating
CHAPTER 13 UART
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