From c3e37a0cdee6f85ba2d184c98074f0364786bd2b Mon Sep 17 00:00:00 2001
From: Dave Hylands <dhylands@gmail.com>
Date: Tue, 28 Apr 2015 17:25:32 -0700
Subject: [PATCH] stmhal: Automatically re-enable IRQs on the USB REPL.
This allows errors to be seen and prevents hanging
the board from doing: pyb.disable_irq()
---
stmhal/pyexec.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/stmhal/pyexec.c b/stmhal/pyexec.c
index 8b409bf46..1a121ce3e 100644
--- a/stmhal/pyexec.c
+++ b/stmhal/pyexec.c
@@ -36,6 +36,10 @@
#ifdef MICROPY_HAL_H
#include MICROPY_HAL_H
#endif
+#if defined(USE_DEVICE_MODE)
+#include "irq.h"
+#include "usb.h"
+#endif
#include "readline.h"
#include "pyexec.h"
#include "genhdr/mpversion.h"
@@ -307,6 +311,20 @@ friendly_repl_reset:
for (;;) {
input_restart:
+
+ #if defined(USE_DEVICE_MODE)
+ if (usb_vcp_is_enabled()) {
+ // If the user gets to here and interrupts are disabled then
+ // they'll never see the prompt, traceback etc. The USB REPL needs
+ // interrupts to be enabled or no transfers occur. So we try to
+ // do the user a favor and reenable interrupts.
+ if (query_irq() == IRQ_STATE_DISABLED) {
+ enable_irq(IRQ_STATE_ENABLED);
+ mp_hal_stdout_tx_str("PYB: enabling IRQs\r\n");
+ }
+ }
+ #endif
+
vstr_reset(&line);
int ret = readline(&line, ">>> ");
--
GitLab