Ilya Krylov / SX127x1

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Diff: sx127x_lora.h

Revision:
10:7382c260c4b1
Parent:
9:ae1a71ccd730
Child:
11:4210303ac88d
--- a/sx127x_lora.h	Thu Feb 26 23:31:36 2015 +0000
+++ b/sx127x_lora.h	Fri Feb 27 22:50:18 2015 +0000
@@ -113,7 +113,7 @@
     struct {    // sx127x register 0x26
         uint8_t reserved    : 2;    // 0,1
         uint8_t AgcAutoOn   : 1;    // 2
-        uint8_t LowDataRateOptimize  : 1;    // 3   ppm_offset
+        uint8_t LowDataRateOptimize  : 1;    // 3   ppm_offset, use when symbol duration exceeds 16ms
         uint8_t unused      : 4;    // 4,5,6,7 
     } sx1276bits;
     uint8_t octet;
@@ -191,6 +191,11 @@
         
         float get_pkt_rssi(void);
         
+        /** retrieve symbol duration from bandwidth and spreading factor
+         * @returns symbol duration in milliseconds
+         */        
+        float get_symbol_period(void);
+        
         service_action_e service(void); // (SLIH) ISR bottom half 
         
         bool poll_vh;