diff options
Diffstat (limited to 'shared-bindings/displayio/ParallelBus.c')
| -rw-r--r-- | shared-bindings/displayio/ParallelBus.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/shared-bindings/displayio/ParallelBus.c b/shared-bindings/displayio/ParallelBus.c index 6a499ed06..00a96d230 100644 --- a/shared-bindings/displayio/ParallelBus.c +++ b/shared-bindings/displayio/ParallelBus.c @@ -39,18 +39,24 @@ //| .. currentmodule:: displayio //| -//| :class:`ParallelBus` -- Manage updating a display over SPI four wire protocol +//| :class:`ParallelBus` -- Manage updating a display over 8-bit parallel bus //| ============================================================================== //| -//| Manage updating a display over SPI four wire protocol in the background while Python code runs. -//| It doesn't handle display initialization. +//| Manage updating a display over 8-bit parallel bus in the background while Python code runs. This +//| protocol may be refered to as 8080-I Series Parallel Interface in datasheets. It doesn't handle +//| display initialization. //| //| .. class:: ParallelBus(*, data0, command, chip_select, write, read, reset) //| //| Create a ParallelBus object associated with the given pins. The bus is inferred from data0 //| by implying the next 7 additional pins on a given GPIO port. //| -//| :param microcontroller.Pin: The first data pin. The rest are implied +//| The parallel bus and pins are then in use by the display until `displayio.release_displays()` +//| is called even after a reload. (It does this so CircuitPython can use the display after your +//| code is done.) So, the first time you initialize a display bus in code.py you should call +//| :py:func`displayio.release_displays` first, otherwise it will error after the first code.py run. +//| +//| :param microcontroller.Pin data0: The first data pin. The rest are implied //| :param microcontroller.Pin command: Data or command pin //| :param microcontroller.Pin chip_select: Chip select pin //| :param microcontroller.Pin write: Write pin |