I found time to work on this a bit, and I got usb_msd to work without
POSTINC1. I don't see why the other USB samples don't work with this. This
code can be added at the top of usb_drv_core.jal
--
--------------------------------------------------------------------------------------
-- Some PICs do not support the memory_pointer1 library since they don't
have
-- the POSTINC1 or FSR1 registers.
--
--------------------------------------------------------------------------------------
if !defined(POSTINC1) then
;Store the next array read/write location
var word usb_buff_address
;The current endpoint to read/write to.
var byte endpoint_array_selected
const byte USB_EP0_OUT = 0
const byte USB_EP0_IN = 1
const byte USB_EP1_OUT = 2
const byte USB_EP1_IN = 3
const byte USB_EP2_OUT = 4
const byte USB_EP2_IN = 5
const byte USB_EP3_OUT = 6
const byte USB_EP3_IN = 7
;Set the array address to read/write to next
procedure mem_pointer1_address'put(word in address) is
usb_buff_address = address
;Find what endpoint the memory address is in, and set the array
address.
if (address >= USB_EP0_OUT_ADDR) & (address < USB_EP0_OUT_ADDR +
USB_EP0_OUT_SIZE) then
endpoint_array_selected = USB_EP0_OUT
usb_buff_address = address - USB_EP0_OUT_ADDR
end if
if (address >= USB_EP0_IN_ADDR) & (address < USB_EP0_IN_ADDR +
USB_EP0_IN_SIZE) then
endpoint_array_selected = USB_EP0_IN
usb_buff_address = address - USB_EP0_IN_ADDR
end if
if (address >= USB_EP1_OUT_ADDR) & (address < USB_EP1_OUT_ADDR +
USB_EP1_OUT_SIZE) then
endpoint_array_selected = USB_EP1_OUT
usb_buff_address = address - USB_EP1_OUT_ADDR
end if
if (address >= USB_EP1_IN_ADDR) & (address < USB_EP1_IN_ADDR +
USB_EP1_IN_SIZE) then
endpoint_array_selected = USB_EP1_IN
usb_buff_address = address - USB_EP1_IN_ADDR
end if
if defined(usb_ep2out_buf) then
if (address >= USB_EP2_OUT_ADDR) & (address < USB_EP2_OUT_ADDR +
USB_EP2_OUT_SIZE) then
endpoint_array_selected = USB_EP2_OUT
usb_buff_address = address - USB_EP2_OUT_ADDR
end if
if (address >= USB_EP2_IN_ADDR) & (address < USB_EP2_IN_ADDR +
USB_EP2_IN_SIZE) then
endpoint_array_selected = USB_EP2_IN
usb_buff_address = address - USB_EP2_IN_ADDR
end if
end if
if defined(usb_ep3out_buf) then
if (address >= USB_EP3_OUT_ADDR) & (address < USB_EP3_OUT_ADDR +
USB_EP3_OUT_SIZE) then
endpoint_array_selected = USB_EP3_OUT
usb_buff_address = address - USB_EP3_OUT_ADDR
end if
if (address >= USB_EP3_IN_ADDR) & (address < USB_EP3_IN_ADDR +
USB_EP3_IN_SIZE) then
endpoint_array_selected = USB_EP3_IN
usb_buff_address = address - USB_EP3_IN_ADDR
end if
end if
end procedure
;Put data into the correct endpoint, and increment to the next array
location.
procedure mem_pointer1'put(byte in data) is
if endpoint_array_selected == USB_EP0_OUT then
usb_ep0out_buf[usb_buff_address] = data
elsif endpoint_array_selected == USB_EP0_IN then
usb_ep0in_buf[usb_buff_address] = data
elsif endpoint_array_selected == USB_EP1_OUT then
usb_ep1out_buf[usb_buff_address] = data
elsif endpoint_array_selected == USB_EP1_IN then
usb_ep1in_buf[usb_buff_address] = data
end if
if defined(usb_ep2out_buf) then
if endpoint_array_selected == USB_EP2_OUT then
usb_EP2out_buf[usb_buff_address] = data
elsif endpoint_array_selected == USB_EP2_IN then
usb_EP2in_buf[usb_buff_address] = data
end if
end if
if defined(usb_ep3out_buf) then
if endpoint_array_selected == USB_EP3_OUT then
usb_EP3out_buf[usb_buff_address] = data
elsif endpoint_array_selected == USB_EP3_IN then
usb_EP3in_buf[usb_buff_address] = data
end if
end if
usb_buff_address = usb_buff_address + 1
end procedure
function mem_pointer1'get() return byte is
var byte data
if endpoint_array_selected == USB_EP0_OUT then
data = usb_ep0out_buf[usb_buff_address]
elsif endpoint_array_selected == USB_EP0_IN then
data = usb_ep0in_buf[usb_buff_address]
elsif endpoint_array_selected == USB_EP1_OUT then
data = usb_ep1out_buf[usb_buff_address]
elsif endpoint_array_selected == USB_EP1_IN then
data = usb_ep1in_buf[usb_buff_address]
end if
if defined(usb_EP2out_buf) then
if endpoint_array_selected == USB_EP2_OUT then
data = usb_EP2out_buf[usb_buff_address]
elsif endpoint_array_selected == USB_EP2_IN then
data = usb_ep2in_buf[usb_buff_address]
end if
end if
if defined(usb_ep3out_buf) then
if endpoint_array_selected == USB_EP3_OUT then
data = usb_EP3out_buf[usb_buff_address]
elsif endpoint_array_selected == USB_EP3_IN then
data = usb_EP3in_buf[usb_buff_address]
end if
end if
usb_buff_address = usb_buff_address + 1
return data
end function
else
include memory_pointer1
end if
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