Fix stm32duino#478 for real this time.

ghent360 · ghent360 · commit d715e122ec71 · 2019-03-25T15:40:11.000-07:00
diff --git a/cores/arduino/stm32/usb/cdc/usbd_cdc_if.c b/cores/arduino/stm32/usb/cdc/usbd_cdc_if.c
@@ -266,7 +266,7 @@ bool CDC_connected()
   // Save the transmitStart value in a local variable - fix #478
   uint32_t transmitTime = transmitStart;
   if (transmitTime) {
-    transmitTime = HAL_GetTick() - transmitStart;
+    transmitTime = HAL_GetTick() - transmitTime;
   }
   return hUSBD_Device_CDC.dev_state == USBD_STATE_CONFIGURED
          && transmitTime < USB_CDC_TRANSMIT_TIMEOUT

Original file line number	Diff line number	Diff line change
`@@ -266,7 +266,7 @@ bool CDC_connected()`
`266`	`266`	`// Save the transmitStart value in a local variable - fix #478`
`267`	`267`	`uint32_t transmitTime = transmitStart;`
`268`	`268`	`if (transmitTime) {`
`269`		`- transmitTime = HAL_GetTick() - transmitStart;`
	`269`	`+ transmitTime = HAL_GetTick() - transmitTime;`
`270`	`270`	`}`
`271`	`271`	`return hUSBD_Device_CDC.dev_state == USBD_STATE_CONFIGURED`
`272`	`272`	`&& transmitTime < USB_CDC_TRANSMIT_TIMEOUT`