6502-OS/programs/spi-menu.s65

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.include "spi.h65"
.include "string.h65"
.include "keypad.h65"
.include "lcd.h65"
.import home:absolute
.import SPI_IO
.export spi_menu
.bss
trans_bytes: .res 1
trans_pages: .res 1
status: .res 1
status_str: .res 17 ; 16 + null
.code
.proc spi_menu
stz trans_bytes
stz trans_pages
lda #'X'
sta status
@print_menu:
jsr lcd::clear
Print MENU
@print_status:
Strf FMT_STATUS,status_str,trans_pages,trans_bytes,status
lda #(lcd::CMD_SET_ADDRESS | lcd::LINE4)
jsr lcd::_cmd
Print status_str
@loop:
; check if a byte has been transferred
@check_byte:
lda spi_p::bytes_written
cmp trans_bytes
bne @byte_written
@check_page:
lda spi_p::pages_written
cmp trans_pages
bne @page_written
bra @read_keypad
@byte_written:
sta trans_bytes
bra @print_status
@page_written:
sta trans_pages
bra @print_status
@read_keypad:
lda kp::_DEBUG_VAL
beq @loop
; TODO debug
sta 0
stz kp::_DEBUG_VAL
lda 0
cmp #'*'
beq @return_home
cmp #'A'
beq @spi_begin
cmp #'B'
beq @spi_end
cmp #'C'
beq @spi_jump
bra @loop
@spi_begin:
lda #'@'
sta status
jsr spi_p::begin
jmp @print_menu
@spi_end:
lda #'X'
sta status
jsr spi_p::end
jmp @print_menu
@spi_jump:
jsr spi_p::end
jsr lcd::clear
Print START
jmp spi_p::CODE_START
@return_home:
jsr spi_p::end
jmp home
.endproc
.rodata
MENU:
.byte "A> Beg. Transfer"
.byte "B> Stop Transfer"
.asciiz "C> Jump Home <*"
; .asciiz "0b0p Status: X"
FMT_STATUS: .asciiz "%x%xb Status:%x"
BEGIN: .asciiz "---BEGIN SPI---"
START: .asciiz "---START SPI---"