ready to release

changelog.md

@@ -2,7 +2,9 @@
 
 ## 0.9.1
 
-- rename FileIO.h to Bluefruit_FileIO to prevent conflict with other libraries.
+- Rename FileIO.h to Bluefruit_FileIO to prevent conflict with other libraries.
+- Minor upgrade for bootloader to prevent issue with WDT enabled by application
+- 52840: call cdc flush before delay()
 
 ## 0.9.0
 

cores/nRF5/delay.c

@@ -37,7 +37,20 @@ uint32_t micros( void )
 
 void delay( uint32_t ms )
 {
-  vTaskDelay(ms2tick(ms));
+  uint32_t ticks = ms2tick(ms);
+
+#ifdef NRF52840_XXAA
+  // Take chance to flush usb cdc
+  uint32_t flush_tick = xTaskGetTickCount();
+  tud_cdc_write_flush();
+
+  flush_tick = xTaskGetTickCount()-flush_tick;
+  if (flush_tick >= ticks) return;
+
+  ticks -= flush_tick;
+#endif
+
+  vTaskDelay(ticks);
 }
 
 void dwt_enable(void)

libraries/Bluefruit52Lib/examples/Peripheral/custom_hrm/custom_hrm.ino

@@ -227,24 +227,3 @@ void loop()
   // Only send update once per second
   delay(1000);
 }
-
-/**
- * RTOS Idle callback is automatically invoked by FreeRTOS
- * when there are no active threads. E.g when loop() calls delay() and
- * there is no bluetooth or hw event. This is the ideal place to handle
- * background data.
- * 
- * NOTE: FreeRTOS is configured as tickless idle mode. After this callback
- * is executed, if there is time, freeRTOS kernel will go into low power mode.
- * Therefore waitForEvent() should not be called in this callback.
- * http://www.freertos.org/low-power-tickless-rtos.html
- * 
- * WARNING: This function MUST NOT call any blocking FreeRTOS API 
- * such as delay(), xSemaphoreTake() etc ... for more information
- * http://www.freertos.org/a00016.html
- */
-void rtos_idle_callback(void)
-{
-  // Don't call any other FreeRTOS blocking API()
-  // Perform background task(s) here
-}