Helmut Tschemernjak / Mbed 2 deprecated STM32L0_LoRa

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Dependencies:   BufferedSerial SX1276GenericLib mbed USBDeviceHT

Files at this revision

API Documentation at this revision

Revision 20:a1029437adca, committed 2018-06-03

Comitter:
Helmut64
Date:
Sun Jun 03 19:25:37 2018 +0000
Parent:
19:992eda680d91
Commit message:
When USB is active we keep a Timer running to avoid deepsleep.

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
utils.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r 992eda680d91 -r a1029437adca main.cpp
--- a/main.cpp	Sun Jun 03 18:33:17 2018 +0000
+++ b/main.cpp	Sun Jun 03 19:25:37 2018 +0000
@@ -7,14 +7,7 @@
 
 
 DigitalOut led(LED);
-DigitalOut led2(LED2);
 
-Timeout tim;
-void ledBlink(void)
-{
-    tim.attach(callback(&ledBlink), 0.200);
-    led2 = !led2;
-}
 
 int main() { 
     /*
@@ -27,7 +20,6 @@
     dprintf("Welcome to the SX1276GenericLib");
   
     dprintf("Starting a simple LoRa PingPong");
-    ledBlink();
 
     SX1276PingPong();
 }

diff -r 992eda680d91 -r a1029437adca utils.cpp
--- a/utils.cpp	Sun Jun 03 18:33:17 2018 +0000
+++ b/utils.cpp	Sun Jun 03 19:25:37 2018 +0000
@@ -12,6 +12,19 @@
 #endif
 bool _useDprintf;
 
+/*
+ * keep a timer running to avoid USB hangup in sleep,
+ * in newer mbed versions sleep calls deepsleep which may 
+ * hangup the USBSerial.
+ * For this reason we keep a timer pending which avoids deepsleep.
+ */
+static Timeout busyTimer;
+
+void busyTimerFunc(void)
+{
+    busyTimer.attach(callback(&busyTimerFunc), 300);
+}
+
 void InitSerial(int timeout, DigitalOut *led)
 {
     _useDprintf = true;
@@ -39,6 +52,7 @@
                     return;
             }
         }
+        busyTimerFunc();
         return;
     } else {
 #else