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Updated Sensor API (markdown)

andrethomas 2018-07-14 22:04:59 +02:00
parent e81b408d19
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Sensor-API.md

@ -244,10 +244,11 @@ This functions checks if the I2C address `addr` is in use.
## Useful pre-processor directives
### PSTR("string")
#### PSTR("string")
This pre-processor directive saves RAM by storing strings in flash instead of RAM.
const char MyTextStaticVariable[] PROGMEM = "string";
#### const char MyTextStaticVariable[] PROGMEM = "string";
This pre-processor directive saves RAM by storing strings in flash instead of RAM.
You may then reference them directly (if the type matches the parameter required) or force it to 4 byte alignment by using the variable as FPSTR(MyTextStaticVariable)
You may then reference them directly (if the type matches the parameter required) or force it to 4 byte alignment by using the variable as `FPSTR(MyTextStaticVariable)`