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Posted to commits@mynewt.apache.org by je...@apache.org on 2021/02/24 11:09:18 UTC
[mynewt-core] 05/05: hw/bsp/dialog: Stop MTB in Default_Handler
This is an automated email from the ASF dual-hosted git repository.
jerzy pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-core.git
commit 55e774c49cebbd07c4023759267c41497e29e618
Author: Jerzy Kasenberg <je...@codecoup.pl>
AuthorDate: Tue Feb 16 15:17:00 2021 +0100
hw/bsp/dialog: Stop MTB in Default_Handler
Default handler simply loops waiting for debugger or watchdog.
MTB is not turned off it this event to keep useful information
in MBT buffer and not just infinite loop trace.
---
.../src/arch/cortex_m33/gcc_startup_da1469x.S | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/bsp/dialog_da1469x-dk-pro/src/arch/cortex_m33/gcc_startup_da1469x.S b/hw/bsp/dialog_da1469x-dk-pro/src/arch/cortex_m33/gcc_startup_da1469x.S
index c5e1281..c535071 100644
--- a/hw/bsp/dialog_da1469x-dk-pro/src/arch/cortex_m33/gcc_startup_da1469x.S
+++ b/hw/bsp/dialog_da1469x-dk-pro/src/arch/cortex_m33/gcc_startup_da1469x.S
@@ -272,6 +272,13 @@ Reset_Handler:
/* Default interrupt handler */
.type Default_Handler, %function
Default_Handler:
+#if MYNEWT_VAL(MCU_MTB_ENABLE)
+ /* Disable MTB, otherwise it will quickly fill up buffer with infinite loop branch. */
+ ldr r1, =MTB_POSITION_REG
+ ldr r2, [r1, #4]
+ bic r2, #0x80000000
+ str r2, [r1, #4]
+#endif
ldr r1, =SYS_CTRL_REG
ldrh r2, [r1, #0]
orrs r2, r2, #0x80 /* DEBUGGER_ENABLE */