From 124df6f8d07b53542b6960dbeea9b63bff469a67 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Sat, 25 Oct 2014 18:19:55 +0100
Subject: py: Add mp_pending_exception global variable, for VM soft interrupt.

This allows to implement KeyboardInterrupt on unix, and a much safer
ctrl-C in stmhal port.  First ctrl-C is a soft one, with hope that VM
will notice it; second ctrl-C is a hard one that kills anything (for
both unix and stmhal).

One needs to check for a pending exception in the VM only for jump
opcodes.  Others can't produce an infinite loop (infinite recursion is
caught by stack check).
---
 stmhal/usbd_cdc_interface.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'stmhal/usbd_cdc_interface.c')

diff --git a/stmhal/usbd_cdc_interface.c b/stmhal/usbd_cdc_interface.c
index d43795550..28f06067b 100644
--- a/stmhal/usbd_cdc_interface.c
+++ b/stmhal/usbd_cdc_interface.c
@@ -374,7 +374,6 @@ static int8_t CDC_Itf_Receive(uint8_t* Buf, uint32_t *Len) {
 
         if (char_found) {
             // raise exception when interrupts are finished
-            user_interrupt_char = VCP_CHAR_NONE;
             pendsv_nlr_jump(user_interrupt_data);
         }
 
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