mathieu/Adafruit_MQTT_Library
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Documented payload

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This commit is contained in:
Stuart Feichtinger 2016-01-31 17:24:00 -06:00
parent ef573ee2b2
commit 23a4673565
1 changed files with 17 additions and 0 deletions
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17
examples/mqtt_arbitrary_buffer/mqtt_arbitrary_buffer.ino
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@ -58,6 +58,23 @@ Adafruit_MQTT_Publish photocell = Adafruit_MQTT_Publish(&mqtt, PHOTOCELL_FEED);
const char ONOFF_FEED[] PROGMEM = AIO_USERNAME "/feeds/onoff";
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, ONOFF_FEED);
// Arbitrary Payload
// Union allows for easier interaction of members in struct form with easy publishing
// of "raw" bytes
typedef union{
struct __attribute__((__packed__)){ // packed to eliminate padding for easier parsing.
char charAry[10];
int16_t val1;
unsigned long val2;
uint16_t val3;
}s;
uint8_t raw[sizeof(s)]; // For publishing
} packet_t;
/*************************** Sketch Code ************************************/
// Bug workaround for Arduino 1.6.6, it seems to need a function declaration