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Install FreeRTOS trap handler (#1087)

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Install FreeRTOS trap handler

The application is supposed to program mtvec correctly depending on
whether they want to use vectored interrupt or not.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Gaurav-Aggarwal-AWS 2023-09-11 23:17:46 +05:30 • committed by GitHub
parent 3a2f6646f0
commit 99f5b80ae4
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1 changed files with 8 additions and 2 deletions
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10
FreeRTOS/Demo/RISC-V-Qemu-sifive_e-Eclipse-GCC/main.c
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@ -1,6 +1,6 @@
/*
* FreeRTOS V202212.00
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
@ -49,7 +49,7 @@
* This project has only been tested in the QEMU emulation of the HiFive board
* from SiFive.
*
* NOTE - Requires QEMU 1908xx or higher. Start QEMU using the following command
* NOTE - Requires QEMU 1908xx or higher. Start QEMU using the following command
* line:
*
* [your_path_1]\qemu-system-riscv32 -kernel [your_path_2]\FreeRTOS\Demo\RISC-V-Qemu-sifive_e-FreedomStudio\Debug\RTOSDemo.elf -S -s -machine sifive_e
@ -95,6 +95,9 @@ void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void vApplicationTickHook( void );
/* Trap handler implemented in the portASM.S file. */
extern void freertos_risc_v_trap_handler( void );
/*
* Very simply polling write to the UART. The full demo only writes single
* characters at a time so as not to disrupt the timing of the test and demo
@ -106,6 +109,9 @@ void vSendString( const char * pcString );
int main( void )
{
/* Program mtvec with the FreeRTOS trap handler. */
__asm__ volatile( "csrw mtvec, %0" :: "r"( freertos_risc_v_trap_handler ) );
vSendString( "Starting" );
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top