add spi menu

programs/spi-menu.s65

@@ -0,0 +1,92 @@
+.include "system/spi.s65"
+.include "util/string.s65"
+.ifndef INCLUDE_SPI_MENU
+INCLUDE_SPI_MENU = 1
+
+.scope 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::SPI_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---"
+
+.endscope
+.endif  ; guard