diff options
| author | Dan Halbert <halbert@halwitz.org> | 2017-10-30 19:32:03 -0400 |
|---|---|---|
| committer | Scott Shawcroft <scott@tannewt.org> | 2017-10-30 18:32:36 -0700 |
| commit | f738996164fc270015fdb53ee38b24f7823cbbd8 (patch) | |
| tree | 4962b0c3e63fd8d0b12c1f5898d951d279bd4c4d /shared-bindings/busio/SPI.c | |
| parent | bd7abcda970e4e6ecd0f64621536870b49185594 (diff) | |
Allow writing buffer of length zero to I2C device; it can be used to poll for existence.
Diffstat (limited to 'shared-bindings/busio/SPI.c')
| -rw-r--r-- | shared-bindings/busio/SPI.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/shared-bindings/busio/SPI.c b/shared-bindings/busio/SPI.c index dc136564d..add541aa7 100644 --- a/shared-bindings/busio/SPI.c +++ b/shared-bindings/busio/SPI.c @@ -207,6 +207,7 @@ MP_DEFINE_CONST_FUN_OBJ_1(busio_spi_unlock_obj, busio_spi_obj_unlock); //| .. method:: SPI.write(buffer, \*, start=0, end=len(buffer)) //| //| Write the data contained in ``buf``. Requires the SPI being locked. +//| At least one byte must be written. //| //| :param bytearray buffer: buffer containing the bytes to write //| :param int start: Index to start writing from @@ -247,6 +248,7 @@ MP_DEFINE_CONST_FUN_OBJ_KW(busio_spi_write_obj, 2, busio_spi_write); //| .. method:: SPI.readinto(buffer, \*, start=0, end=len(buffer), write_value=0) //| //| Read into the buffer specified by ``buf`` while writing zeroes. Requires the SPI being locked. +//| At least one byte must be read. //| //| :param bytearray buffer: buffer to write into //| :param int start: Index to start writing at |