serialRead¶
serialRead([num])
Parameters¶
| Name | Req | Type | Description |
|---|---|---|---|
num | no | integer | maximum number of bytes to read. If non-zero, serialRead will read up to num characters from the buffer. If 0 or left out, serialRead will read up to and including the first newline character or the end of the buffer. Note that the returned string may not end in a newline if this character is not present in the buffer. |
Returns¶
| Name | Type | Description |
|---|---|---|
str | unknown | string. Empty if no new characters were available. |
Availability¶
- Since:
2.3.8 - Radio support:
all
Source¶
radio/src/lua/api_general.cpp