[SX126x] Added option to change sleep mode (cold/warm start)

jgromes · Dec 29, 2019 · 02ac97b · 02ac97b
1 parent 460a050
commit 02ac97b
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Showing 2 changed files with 9 additions and 3 deletions.
diff --git a/src/modules/SX126x/SX126x.cpp b/src/modules/SX126x/SX126x.cpp
@@ -370,8 +370,12 @@ int16_t SX126x::scanChannel() {
   return(ERR_UNKNOWN);
 }
 
-int16_t SX126x::sleep() {
-  uint8_t data[] = {SX126X_SLEEP_START_COLD | SX126X_SLEEP_RTC_OFF};
+int16_t SX126x::sleep(bool retainConfig) {
+  uint8_t sleepMode = SX126X_SLEEP_START_WARM;
+  if(!retainConfig) {
+    sleepMode = SX126X_SLEEP_START_COLD;
+  }
+  uint8_t data[] = {sleepMode | SX126X_SLEEP_RTC_OFF};
   int16_t state = SPIwriteCommand(SX126X_CMD_SET_SLEEP, data, 1, false);
 
   // wait for SX126x to safely enter sleep mode

diff --git a/src/modules/SX126x/SX126x.h b/src/modules/SX126x/SX126x.h
@@ -452,9 +452,11 @@ class SX126x: public PhysicalLayer {
     /*!
       \brief Sets the module to sleep mode.
 
+      \param retainConfig Set to true to retain configuration of the currently active modem ("warm start") or to false to discard current configuration ("cold start"). Defaults to true.
+
       \returns \ref status_codes
     */
-    int16_t sleep();
+    int16_t sleep(bool retainConfig = true);
 
     /*!
       \brief Sets the module to standby mode (overload for PhysicalLayer compatibility, uses 13 MHz RC oscillator).