OpenCores
URL https://opencores.org/ocsvn/neorv32/neorv32/trunk

Subversion Repositories neorv32

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  • This comparison shows the changes necessary to convert path 
    /neorv32/trunk/sw/example
    from Rev 21 to Rev 22
    ↔ Reverse comparison
  •

Rev 21 → Rev 22

/blink_led/main.c
52,40 → 52,37
 
 
/**********************************************************************//**
* Main function, shows an incrementing 8-bit timer on GPIO.output(7:0).
* Main function; shows an incrementing 8-bit counter on GPIO.output(7:0).
*
* @note This program requires the GPIO to be synthesized (the UART is optional).
* @note This program requires the GPIO controller to be synthesized (the UART is optional).
*
* @return Irrelevant.
**************************************************************************/
int main() {
 
// init UART at default baud rate, no rx interrupt, no tx interrupt
neorv32_uart_setup(BAUD_RATE, 0, 0);
 
// check if GPIO unit is implemented at all
if (neorv32_gpio_available() == 0) {
return 0; // nope, no GPIO unit synthesized :(
neorv32_uart_print("Error! No GPIO unit synthesized!\n");
return 0; // nope, no GPIO unit synthesized
}
 
 
// capture all exceptions and give debug info via UART
// this is not required, but keeps us safe
neorv32_rte_setup();
 
 
// init UART at default baud rate, no rx interrupt, no tx interrupt
neorv32_uart_setup(BAUD_RATE, 0, 0);
 
// say hello
neorv32_uart_print("Blinking LED demo program\n");
 
 
neorv32_gpio_port_set(0); // clear gpio output put
 
int cnt = 0;
 
while (1) {
neorv32_gpio_port_set(cnt & 0xFF); // mask for lowest 8 bit
neorv32_cpu_delay_ms(200); // wait 0.2s using busy wait
cnt++; // increment counter
neorv32_gpio_port_set(cnt++ & 0xFF); // increment counter and mask for lowest 8 bit
neorv32_cpu_delay_ms(200); // wait 200ms using busy wait
}
 
return 0;
/blink_led/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/coremark/core_main.c
97,11 → 97,11
// -----------------------------------------------
// Disable coremark compilation by default
#ifndef RUN_COREMARK
#warning COREMARK HAS NOT BEEN COMPILED! Use >>make USER_FLAGS+=-DRUN_COREMARK clean_all compile<< to compile it.
#warning COREMARK HAS NOT BEEN COMPILED! Use >>make USER_FLAGS+=-DRUN_COREMARK clean_all exe<< to compile it.
 
// inform the user if you are actually executing this
portable_init(NULL, &argc, argv);
ee_printf("ERROR! CoreMark has not been compiled. Use >>make USER_FLAGS+=-DRUN_COREMARK clean_all compile<< to compile it.\n");
ee_printf("ERROR! CoreMark has not been compiled. Use >>make USER_FLAGS+=-DRUN_COREMARK clean_all exe<< to compile it.\n");
 
return 0;
#endif
/coremark/core_portme.c
156,7 → 156,9
exe_time.uint64 = (uint64_t)elapsed_cycles;
exe_instructions.uint64 = neorv32_cpu_get_instret();
 
neorv32_uart_printf("\nNEORV32: Executed instructions 0x%x_%x\n", (uint32_t)exe_instructions.uint32[1], (uint32_t)exe_instructions.uint32[0]);
neorv32_uart_printf("\nNEORV32: All reported numbers only show the integer results.\n\n");
 
neorv32_uart_printf("NEORV32: Executed instructions 0x%x_%x\n", (uint32_t)exe_instructions.uint32[1], (uint32_t)exe_instructions.uint32[0]);
neorv32_uart_printf("NEORV32: CoreMark core clock cycles 0x%x_%x\n", (uint32_t)exe_time.uint32[1], (uint32_t)exe_time.uint32[0]);
 
uint64_t average_cpi = exe_time.uint64 / exe_instructions.uint64;
/coremark/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/cpu_test/main.c
107,12 → 107,10
uint32_t uint32[sizeof(uint64_t)/2];
} cpu_systime;
 
 
// reset performance counter
neorv32_cpu_set_minstret(0);
neorv32_cpu_set_mcycle(0);
 
 
// check if UART unit is implemented at all
if (neorv32_uart_available() == 0) {
return 0;
123,11 → 121,9
return 0;
}
 
 
// init UART at default baud rate, no rx interrupt, no tx interrupt
neorv32_uart_setup(BAUD_RATE, 0, 0);
 
 
neorv32_mtime_set_time(0);
// set CMP of machine system timer MTIME to max to prevent an IRQ
uint64_t mtime_cmp_max = 0xFFFFFFFFFFFFFFFFL;
134,11 → 130,14
neorv32_mtime_set_timecmp(mtime_cmp_max);
 
// intro
neorv32_uart_printf("\n\n-==== CPU TEST ====-\n\n");
neorv32_uart_printf("\n\n--- CPU TEST ---\n\n");
 
// show project credits
neorv32_rte_print_credits();
 
// show project license
neorv32_rte_print_license();
 
// show full HW config report
neorv32_rte_print_hw_config();
 
227,6 → 226,7
neorv32_uart_printf("skipped (disabled)\n");
#endif
 
 
// ----------------------------------------------------------
// Data memory test
// ----------------------------------------------------------
260,7 → 260,6
#endif
 
 
 
// ----------------------------------------------------------
// Test time[h] (must be == MTIME)
// ----------------------------------------------------------
367,7 → 366,7
#endif
}
else {
neorv32_uart_printf("skipped (not possible when C-EXT enabled)\n");
neorv32_uart_printf("skipped (not possible when C extension is enabled)\n");
}
 
 
405,7 → 404,7
};
 
tmp_a = (uint32_t)&dummy_sub_program; // call the dummy sub program
asm volatile ( "jalr ra, %0 " : "=r" (tmp_a) : "r" (tmp_a));
asm volatile ("jalr ra, %[input_i]" : : [input_i] "r" (tmp_a));
 
#if (DETAILED_EXCEPTION_DEBUG==0)
if (exception_handler_answer == TRAP_CODE_I_ILLEGAL) {
435,7 → 434,7
};
 
tmp_a = (uint32_t)&dummy_sub_program_ci; // call the dummy sub program
asm volatile ( "jalr ra, %0 " : "=r" (tmp_a) : "r" (tmp_a));
asm volatile ("jalr ra, %[input_i]" : : [input_i] "r" (tmp_a));
 
#if (DETAILED_EXCEPTION_DEBUG==0)
if (exception_handler_answer == TRAP_CODE_I_ILLEGAL) {
/cpu_test/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/demo_freeRTOS/blinky_demo/main_blinky.c
0,0 → 1,209
/*
* FreeRTOS Kernel V10.3.0
* 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
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
 
#ifdef RUN_FREERTOS_DEMO
 
/******************************************************************************
* NOTE 1: This project provides two demo applications. A simple blinky
* style project, and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting in main.c is used to select
* between the two. See the notes on using mainCREATE_SIMPLE_BLINKY_DEMO_ONLY
* in main.c. This file implements the simply blinky style version.
*
* NOTE 2: This file only contains the source code that is specific to the
* basic demo. Generic functions, such FreeRTOS hook functions, and functions
* required to configure the hardware are defined in main.c.
******************************************************************************
*
* main_blinky() creates one queue, and two tasks. It then starts the
* scheduler.
*
* The Queue Send Task:
* The queue send task is implemented by the prvQueueSendTask() function in
* this file. prvQueueSendTask() sits in a loop that causes it to repeatedly
* block for 1000 milliseconds, before sending the value 100 to the queue that
* was created within main_blinky(). Once the value is sent, the task loops
* back around to block for another 1000 milliseconds...and so on.
*
* The Queue Receive Task:
* The queue receive task is implemented by the prvQueueReceiveTask() function
* in this file. prvQueueReceiveTask() sits in a loop where it repeatedly
* blocks on attempts to read data from the queue that was created within
* main_blinky(). When data is received, the task checks the value of the
* data, and if the value equals the expected 100, writes 'Blink' to the UART
* (the UART is used in place of the LED to allow easy execution in QEMU). The
* 'block time' parameter passed to the queue receive function specifies that
* the task should be held in the Blocked state indefinitely to wait for data to
* be available on the queue. The queue receive task will only leave the
* Blocked state when the queue send task writes to the queue. As the queue
* send task writes to the queue every 1000 milliseconds, the queue receive
* task leaves the Blocked state every 1000 milliseconds, and therefore toggles
* the LED every 200 milliseconds.
*/
 
/* Standard includes. */
#include <stdio.h>
#include <string.h>
#include <unistd.h>
 
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
 
/* Priorities used by the tasks. */
#define mainQUEUE_RECEIVE_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
 
/* The rate at which data is sent to the queue. The 200ms value is converted
to ticks using the pdMS_TO_TICKS() macro. */
#define mainQUEUE_SEND_FREQUENCY_MS pdMS_TO_TICKS( 1000 )
 
/* The maximum number items the queue can hold. The priority of the receiving
task is above the priority of the sending task, so the receiving task will
preempt the sending task and remove the queue items each time the sending task
writes to the queue. Therefore the queue will never have more than one item in
it at any time, and even with a queue length of 1, the sending task will never
find the queue full. */
#define mainQUEUE_LENGTH ( 1 )
 
/*-----------------------------------------------------------*/
 
/*
* Called by main when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1 in
* main.c.
*/
void main_blinky( void );
 
/*
* The tasks as described in the comments at the top of this file.
*/
static void prvQueueReceiveTask( void *pvParameters );
static void prvQueueSendTask( void *pvParameters );
 
/*-----------------------------------------------------------*/
 
/* The queue used by both tasks. */
static QueueHandle_t xQueue = NULL;
 
/*-----------------------------------------------------------*/
 
void main_blinky( void )
{
/* Create the queue. */
xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( uint32_t ) );
 
if( xQueue != NULL )
{
/* Start the two tasks as described in the comments at the top of this
file. */
xTaskCreate( prvQueueReceiveTask, /* The function that implements the task. */
"Rx", /* The text name assigned to the task - for debug only as it is not used by the kernel. */
configMINIMAL_STACK_SIZE * 2U, /* The size of the stack to allocate to the task. */
NULL, /* The parameter passed to the task - not used in this case. */
mainQUEUE_RECEIVE_TASK_PRIORITY, /* The priority assigned to the task. */
NULL ); /* The task handle is not required, so NULL is passed. */
 
xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE * 2U, NULL, mainQUEUE_SEND_TASK_PRIORITY, NULL );
 
/* Start the tasks and timer running. */
vTaskStartScheduler();
}
 
/* If all is well, the scheduler will now be running, and the following
line will never be reached. If the following line does execute, then
there was insufficient FreeRTOS heap memory available for the Idle and/or
timer tasks to be created. See the memory management section on the
FreeRTOS web site for more details on the FreeRTOS heap
http://www.freertos.org/a00111.html. */
for( ;; );
}
/*-----------------------------------------------------------*/
 
static void prvQueueSendTask( void *pvParameters )
{
TickType_t xNextWakeTime;
const unsigned long ulValueToSend = 100UL;
BaseType_t xReturned;
 
/* Remove compiler warning about unused parameter. */
( void ) pvParameters;
 
/* Initialise xNextWakeTime - this only needs to be done once. */
xNextWakeTime = xTaskGetTickCount();
 
for( ;; )
{
/* Place this task in the blocked state until it is time to run again. */
vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
 
/* Send to the queue - causing the queue receive task to unblock and
toggle the LED. 0 is used as the block time so the sending operation
will not block - it shouldn't need to block as the queue should always
be empty at this point in the code. */
xReturned = xQueueSend( xQueue, &ulValueToSend, 0U );
configASSERT( xReturned == pdPASS );
}
}
/*-----------------------------------------------------------*/
 
static void prvQueueReceiveTask( void *pvParameters )
{
unsigned long ulReceivedValue;
const unsigned long ulExpectedValue = 100UL;
const char * const pcPassMessage = "Blink\r\n";
const char * const pcFailMessage = "Unexpected value received\r\n";
extern void vSendString( const char * const pcString );
extern void vToggleLED( void );
 
/* Remove compiler warning about unused parameter. */
( void ) pvParameters;
 
for( ;; )
{
/* Wait until something arrives in the queue - this task will block
indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
FreeRTOSConfig.h. */
xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
 
/* To get here something must have been received from the queue, but
is it the expected value? If it is, toggle the LED. */
if( ulReceivedValue == ulExpectedValue )
{
vSendString( pcPassMessage );
vToggleLED();
ulReceivedValue = 0U;
}
else
{
vSendString( pcFailMessage );
}
}
}
/*-----------------------------------------------------------*/
 
#endif
/demo_freeRTOS/chip_specific_extensions/neorv32/freertos_risc_v_chip_specific_extensions.h
0,0 → 1,72
/*
* FreeRTOS Kernel V10.3.1
* 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
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
 
/*
* The FreeRTOS kernel's RISC-V port is split between the the code that is
* common across all currently supported RISC-V chips (implementations of the
* RISC-V ISA), and code that tailors the port to a specific RISC-V chip:
*
* + FreeRTOS\Source\portable\GCC\RISC-V-RV32\portASM.S contains the code that
* is common to all currently supported RISC-V chips. There is only one
* portASM.S file because the same file is built for all RISC-V target chips.
*
* + Header files called freertos_risc_v_chip_specific_extensions.h contain the
* code that tailors the FreeRTOS kernel's RISC-V port to a specific RISC-V
* chip. There are multiple freertos_risc_v_chip_specific_extensions.h files
* as there are multiple RISC-V chip implementations.
*
* !!!NOTE!!!
* TAKE CARE TO INCLUDE THE CORRECT freertos_risc_v_chip_specific_extensions.h
* HEADER FILE FOR THE CHIP IN USE. This is done using the assembler's (not the
* compiler's!) include path. For example, if the chip in use includes a core
* local interrupter (CLINT) and does not include any chip specific register
* extensions then add the path below to the assembler's include path:
* FreeRTOS\Source\portable\GCC\RISC-V-RV32\chip_specific_extensions\RV32I_CLINT_no_extensions
*
*/
 
/*
* NEORV32 chip specific extensions
*/
 
 
#ifndef __FREERTOS_RISC_V_EXTENSIONS_H__
#define __FREERTOS_RISC_V_EXTENSIONS_H__
 
#define portasmHAS_SIFIVE_CLINT 0
#define portasmHAS_MTIME 1
#define portasmADDITIONAL_CONTEXT_SIZE 0 /* Must be even number on 32-bit cores. */
 
.macro portasmSAVE_ADDITIONAL_REGISTERS
/* No additional registers to save, so this macro does nothing. */
.endm
 
.macro portasmRESTORE_ADDITIONAL_REGISTERS
/* No additional registers to restore, so this macro does nothing. */
.endm
 
#endif /* __FREERTOS_RISC_V_EXTENSIONS_H__ */
/demo_freeRTOS/FreeRTOSConfig.h
0,0 → 1,156
/*
FreeRTOS V8.2.3 - Copyright (C) 2015 Real Time Engineers Ltd.
All rights reserved
 
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
 
This file is part of the FreeRTOS distribution.
 
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.
 
***************************************************************************
>>! NOTE: The modification to the GPL is included to allow you to !<<
>>! distribute a combined work that includes FreeRTOS without being !<<
>>! obliged to provide the source code for proprietary components !<<
>>! outside of the FreeRTOS kernel. !<<
***************************************************************************
 
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available on the following
link: http://www.freertos.org/a00114.html
 
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that is more than just the market leader, it *
* is the industry's de facto standard. *
* *
* Help yourself get started quickly while simultaneously helping *
* to support the FreeRTOS project by purchasing a FreeRTOS *
* tutorial book, reference manual, or both: *
* http://www.FreeRTOS.org/Documentation *
* *
***************************************************************************
 
http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
the FAQ page "My application does not run, what could be wrong?". Have you
defined configASSERT()?
 
http://www.FreeRTOS.org/support - In return for receiving this top quality
embedded software for free we request you assist our global community by
participating in the support forum.
 
http://www.FreeRTOS.org/training - Investing in training allows your team to
be as productive as possible as early as possible. Now you can receive
FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
Ltd, and the world's leading authority on the world's leading RTOS.
 
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
 
http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
 
http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and commercial middleware.
 
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
 
1 tab == 4 spaces!
*/
 
 
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
 
//#include "clock_config.h"
 
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
*
* See http://www.freertos.org/a00110.html.
*----------------------------------------------------------*/
 
/* See https://www.freertos.org/Using-FreeRTOS-on-RISC-V.html */
#define configMTIME_BASE_ADDRESS ( 0xFFFFFF90UL )
#define configMTIMECMP_BASE_ADDRESS ( 0xFFFFFF98UL )
 
#define configISR_STACK_SIZE_WORDS ( 128 )
 
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 1
#define configUSE_TICK_HOOK 1
#define configCPU_CLOCK_HZ 100000000
#define configTICK_RATE_HZ ( ( TickType_t ) 100 )
#define configMAX_PRIORITIES ( 5 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 200 ) /* Can be as low as 60 but some of the demo tasks that use this constant require it to be higher. */
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 7 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 0
#define configUSE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 8
#define configCHECK_FOR_STACK_OVERFLOW 2
#define configUSE_RECURSIVE_MUTEXES 1
#define configUSE_MALLOC_FAILED_HOOK 1
#define configUSE_APPLICATION_TASK_TAG 0
#define configUSE_COUNTING_SEMAPHORES 1
#define configGENERATE_RUN_TIME_STATS 0
 
/* Co-routine definitions. */
#define configUSE_CO_ROUTINES 0
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
 
/* Software timer definitions. */
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY ( configMAX_PRIORITIES - 1 )
#define configTIMER_QUEUE_LENGTH 4
#define configTIMER_TASK_STACK_DEPTH ( configMINIMAL_STACK_SIZE )
 
/* Task priorities. Allow these to be overridden. */
#ifndef uartPRIMARY_PRIORITY
#define uartPRIMARY_PRIORITY ( configMAX_PRIORITIES - 3 )
#endif
 
/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 1
#define INCLUDE_vTaskCleanUpResources 1
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
#define INCLUDE_eTaskGetState 1
#define INCLUDE_xTimerPendFunctionCall 1
#define INCLUDE_xTaskAbortDelay 1
#define INCLUDE_xTaskGetHandle 1
#define INCLUDE_xSemaphoreGetMutexHolder 1
 
// get runtime stats
#define configGENERATE_RUN_TIME_STATS 0
 
/* Normal assert() semantics without relying on the provision of an assert.h
header file. */
#define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); __asm volatile( "ebreak" ); for( ;; ); }
 
#define configUSE_PORT_OPTIMISED_TASK_SELECTION 0
#define configKERNEL_INTERRUPT_PRIORITY 7
 
 
#endif /* FREERTOS_CONFIG_H */
/demo_freeRTOS/README.md
0,0 → 1,59
# FreeRTOS Demo for the NEORV32 Processor
 
This is simple example shows the usage of [FreeRTOS](https://www.freertos.org/) on the NEORV32 processor. It uses the default *blink*
demo application (`blinky_demo/main_blinky.c`). See the comments in that source file for more information.
 
The chip-specific extensions folder (`chip_specific_extensions/neorv32`) should be in `$(FREERTOS_HOME)/Source/portable/GCC/RISC-V/chip_specific_extensions`,
but is placed in this source directory for simplicity.
 
 
## Hardware Requirements
 
* 8kB DMEM and 16kB IMEM
* MTIME (machine timer)
* `Zicsr` CPU extension
 
 
## Instructions
 
Download FreeRTOS from the [official GitHub repository](https://github.com/FreeRTOS/FreeRTOS).
 
$ git clone https://github.com/FreeRTOS/FreeRTOS.git
 
Open the makefile from this example folder and configure the `FREERTOS_HOME` variable to point to the `FreeRTOS/FreeRTOS` home folder.
 
FREERTOS_HOME ?= /mnt/n/Projects/FreeRTOS/FreeRTOS
 
Compile the NEORV32 executable. Do not forget the `RUN_FREERTOS_DEMO` switch.
 
$ make USER_FLAGS+=-DRUN_FREERTOS_DEMO clean_all exe
 
Note: The *.c sources and the FreeRTOS-specific part of the makefile have (include) guards that test if `RUN_FREERTOS_DEMO` is defined.
This has no pratical usage for the user - it is just a work-around for the NEORV32 CI environment.
 
Upload the executable (`neorv32_exe.bin`) to the processor via the bootloader and execute it.
 
```
Awaiting neorv32_exe.bin... OK
CMD:> e
Booting...
 
FreeRTOS V10.3.1
Blink
Blink
Blink
```
 
 
## Note
 
The onfiguration of the FreeRTOS home folder (via `FREERTOS_HOME`) is corrupted if the compiler shows the following error:
 
```
main.c:36:10: fatal error: FreeRTOS.h: No such file or directory
36 | #include <FreeRTOS.h>
| ^~~~~~~~~~~~
compilation terminated.
make: *** [makefile:203: main.c.o] Error 1
```
 
/demo_freeRTOS/main.c
0,0 → 1,196
/*
* FreeRTOS Kernel V10.3.0
* 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
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
 
/*
* Modified for the NEORV32 processor by Stephan Nolting.
*/
 
#ifdef RUN_FREERTOS_DEMO
 
 
/* FreeRTOS kernel includes. */
#include <FreeRTOS.h>
#include <task.h>
 
/* NEORV32 includes. */
#include <neorv32.h>
 
 
#define BAUD_RATE 19200
 
 
/******************************************************************************
* This project provides two demo applications. A simple blinky style project,
* and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
* select between the two. The simply blinky demo is implemented and described
* in main_blinky.c. The more comprehensive test and demo application is
* implemented and described in main_full.c.
*
* This file implements the code that is not demo specific, including the
* hardware setup and standard FreeRTOS hook functions.
*
* ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
* THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
* APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
*
*/
 
extern void main_blinky( void );
extern void freertos_risc_v_trap_handler( void );
 
/* Prototypes for the standard FreeRTOS callback/hook functions implemented
within this file. See https://www.freertos.org/a00016.html */
void vApplicationMallocFailedHook( void );
void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void vApplicationTickHook( void );
 
/* Prepare hardware to run the demo. */
static void prvSetupHardware( void );
 
/* Send a message to the UART initialised in prvSetupHardware. */
void vSendString( const char * const pcString );
 
/*-----------------------------------------------------------*/
 
int main( void )
{
prvSetupHardware();
 
neorv32_uart_printf("FreeRTOS %s\n", tskKERNEL_VERSION_NUMBER);
 
main_blinky();
}
 
/*-----------------------------------------------------------*/
 
static void prvSetupHardware( void )
{
// configure trap handler entry point
neorv32_cpu_csr_write(CSR_MTVEC, (uint32_t)&freertos_risc_v_trap_handler);
 
// configure UART for default baud rate, no rx interrupt, no tx interrupt
neorv32_uart_setup(BAUD_RATE, 0, 0);
}
 
/*-----------------------------------------------------------*/
 
void vToggleLED( void )
{
neorv32_gpio_pin_toggle(0);
}
 
/*-----------------------------------------------------------*/
 
void vSendString( const char * const pcString )
{
neorv32_uart_print( (char *)pcString );
}
 
/*-----------------------------------------------------------*/
 
void vApplicationMallocFailedHook( void )
{
/* vApplicationMallocFailedHook() will only be called if
configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
function that will get called if a call to pvPortMalloc() fails.
pvPortMalloc() is called internally by the kernel whenever a task, queue,
timer or semaphore is created. It is also called by various parts of the
demo application. If heap_1.c or heap_2.c are used, then the size of the
heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
to query the size of free heap space that remains (although it does not
provide information on how the remaining heap might be fragmented). */
taskDISABLE_INTERRUPTS();
neorv32_uart_print("FreeRTOS_FAULT: vApplicationMallocFailedHook\n");
__asm volatile( "ebreak" );
for( ;; );
}
/*-----------------------------------------------------------*/
 
void vApplicationIdleHook( void )
{
/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
task. It is essential that code added to this hook function never attempts
to block in any way (for example, call xQueueReceive() with a block time
specified, or call vTaskDelay()). If the application makes use of the
vTaskDelete() API function (as this demo application does) then it is also
important that vApplicationIdleHook() is permitted to return to its calling
function, because it is the responsibility of the idle task to clean up
memory allocated by the kernel to any task that has since been deleted. */
neorv32_cpu_sleep();
}
 
/*-----------------------------------------------------------*/
 
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
{
( void ) pcTaskName;
( void ) pxTask;
 
/* Run time stack overflow checking is performed if
configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
function is called if a stack overflow is detected. */
taskDISABLE_INTERRUPTS();
neorv32_uart_print("FreeRTOS_FAULT: vApplicationStackOverflowHook\n");
__asm volatile( "ebreak" );
for( ;; );
}
 
/*-----------------------------------------------------------*/
 
void vApplicationTickHook( void )
{
 
}
 
/*-----------------------------------------------------------*/
 
/* This handler is responsible for handling all interrupts. Only the machine timer interrupt is handled by the kernel. */
void SystemIrqHandler( uint32_t mcause )
{
neorv32_uart_printf("freeRTOS: Unknown interrupt (0x%x)\n", mcause);
}
 
 
 
 
 
// ---------- Primitive main in case this demo is not enabled (i.e. RUN_FREERTOS_DEMO is not defined) ----------
#else
#warning FREERTOS DEMO HAS NOT BEEN COMPILED! Use >>make USER_FLAGS+=-DRUN_FREERTOS_DEMO clean_all exe<< to compile it.
 
#include <neorv32.h>
int main() {
 
neorv32_uart_setup(19200, 0, 0);
neorv32_uart_print("ERROR! FreeRTOS has not been compiled. Use >>make USER_FLAGS+=-DRUN_FREERTOS_DEMO clean_all exe<< to compile it.\n");
return 0;
}
#endif
/demo_freeRTOS/makefile
0,0 → 1,355
#################################################################################################
# << NEORV32 - Application Makefile >> #
# ********************************************************************************************* #
# Make sure to add the riscv GCC compiler's bin folder to your PATH environment variable. #
# ********************************************************************************************* #
# BSD 3-Clause License #
# #
# Copyright (c) 2020, Stephan Nolting. All rights reserved. #
# #
# Redistribution and use in source and binary forms, with or without modification, are #
# permitted provided that the following conditions are met: #
# #
# 1. Redistributions of source code must retain the above copyright notice, this list of #
# conditions and the following disclaimer. #
# #
# 2. Redistributions in binary form must reproduce the above copyright notice, this list of #
# conditions and the following disclaimer in the documentation and/or other materials #
# provided with the distribution. #
# #
# 3. Neither the name of the copyright holder nor the names of its contributors may be used to #
# endorse or promote products derived from this software without specific prior written #
# permission. #
# #
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS #
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE #
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, #
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE #
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED #
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING #
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED #
# OF THE POSSIBILITY OF SUCH DAMAGE. #
# ********************************************************************************************* #
# The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #
#################################################################################################
 
 
# *****************************************************************************
# USER CONFIGURATION
# *****************************************************************************
# User's application sources (*.c, *.cpp, *.s, *.S); add additional files here
APP_SRC ?= $(wildcard ./*.c) $(wildcard ./*.s) $(wildcard ./*.cpp) $(wildcard ./*.S)
 
# User's application include folders (don't forget the '-I' before each entry)
APP_INC ?= -I .
# User's application include folders - for assembly files only (don't forget the '-I' before each entry)
ASM_INC ?= -I .
 
# Optimization
EFFORT ?= -Os
 
# Compiler toolchain
RISCV_TOOLCHAIN ?= riscv32-unknown-elf
 
# CPU architecture and ABI
MARCH ?= -march=rv32i
MABI ?= -mabi=ilp32
 
# User flags for additional configuration (will be added to compiler flags)
USER_FLAGS ?=
 
# Relative or absolute path to the NEORV32 home folder
NEORV32_HOME ?= ../../..
# *****************************************************************************
 
 
 
# -----------------------------------------------------------------------------
# FreeRTOS
# -----------------------------------------------------------------------------
ifneq (,$(findstring RUN_FREERTOS_DEMO,$(USER_FLAGS)))
# FreeRTOS home folder (adapt this!)
FREERTOS_HOME ?= /mnt/n/Projects/FreeRTOS/FreeRTOS
 
# Application
APP_SRC += blinky_demo/main_blinky.c
 
# FreeRTOS core
APP_SRC += $(wildcard $(FREERTOS_HOME)/Source/*.c)
APP_SRC += $(wildcard $(FREERTOS_HOME)/Source/portable/MemMang/heap_1.c)
 
APP_INC += -I $(FREERTOS_HOME)/Source/include
 
# FreeRTOS RISC-V specific
APP_SRC += $(wildcard $(FREERTOS_HOME)/Source/portable/GCC/RISC-V/*.c)
APP_SRC += $(FREERTOS_HOME)/Source/portable/GCC/RISC-V/portASM.S
 
APP_INC += -I $(FREERTOS_HOME)/Source/portable/GCC/RISC-V
 
# NEORV32 specific
ASM_INC += -DportasmHANDLE_INTERRUPT=SystemIrqHandler
 
APP_INC += -I chip_specific_extensions/neorv32
 
ASM_INC += -I chip_specific_extensions/neorv32
endif
 
 
# -----------------------------------------------------------------------------
# NEORV32 framework
# -----------------------------------------------------------------------------
# Path to NEORV32 linker script and startup file
NEORV32_COM_PATH = $(NEORV32_HOME)/sw/common
# Path to main NEORV32 library include files
NEORV32_INC_PATH = $(NEORV32_HOME)/sw/lib/include
# Path to main NEORV32 library source files
NEORV32_SRC_PATH = $(NEORV32_HOME)/sw/lib/source
# Path to NEORV32 executable generator
NEORV32_EXG_PATH = $(NEORV32_HOME)/sw/image_gen
# Path to NEORV32 core rtl folder
NEORV32_RTL_PATH = $(NEORV32_HOME)/rtl/core
# Marker file to check for NEORV32 home folder
NEORV32_HOME_MARKER = $(NEORV32_INC_PATH)/neorv32.h
 
# Core libraries (peripheral and CPU drivers)
CORE_SRC = $(wildcard $(NEORV32_SRC_PATH)/*.c)
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
APP_EXE = neorv32_exe.bin
APP_ASM = main.asm
APP_IMG = neorv32_application_image.vhd
BOOT_IMG = neorv32_bootloader_image.vhd
 
 
# -----------------------------------------------------------------------------
# Sources and objects
# -----------------------------------------------------------------------------
# Define all sources
SRC = $(APP_SRC)
SRC += $(CORE_SRC)
 
# Define all object files
OBJ = $(SRC:%=%.o)
 
 
# -----------------------------------------------------------------------------
# Tools and flags
# -----------------------------------------------------------------------------
# Compiler tools
CC = $(RISCV_TOOLCHAIN)-gcc
OBJDUMP = $(RISCV_TOOLCHAIN)-objdump
OBJCOPY = $(RISCV_TOOLCHAIN)-objcopy
SIZE = $(RISCV_TOOLCHAIN)-size
 
# Host native compiler
CC_X86 = gcc -Wall -O -g
 
# NEORV32 executable image generator
IMAGE_GEN = $(NEORV32_EXG_PATH)/image_gen
 
# Compiler & linker flags
CC_OPTS = $(MARCH) $(MABI) $(EFFORT) -Wall -ffunction-sections -fdata-sections -nostartfiles
CC_OPTS += -Wl,--gc-sections -lm -lc -lgcc -lc
CC_OPTS += $(USER_FLAGS)
 
 
# -----------------------------------------------------------------------------
# Application output definitions
# -----------------------------------------------------------------------------
.PHONY: check info help elf_info clean clean_all bootloader
.DEFAULT_GOAL := help
 
# 'compile' is still here for compatibility
exe: $(APP_ASM) $(APP_EXE)
compile: $(APP_ASM) $(APP_EXE)
install: $(APP_ASM) $(APP_IMG)
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
# Image generator targets
# -----------------------------------------------------------------------------
# install/compile tools
$(IMAGE_GEN): $(NEORV32_EXG_PATH)/image_gen.cpp
@echo Compiling $(IMAGE_GEN)
@$(CC_X86) $< -o $(IMAGE_GEN)
 
 
# -----------------------------------------------------------------------------
# General targets: Assemble, compile, link, dump
# -----------------------------------------------------------------------------
# Compile app *.s sources (assembly)
%.s.o: %.s
@$(CC) -c $(CC_OPTS) -I $(NEORV32_INC_PATH) $(ASM_INC) $< -o $@
 
# Compile app *.S sources (assembly + C pre-processor)
%.S.o: %.S
@$(CC) -c $(CC_OPTS) -I $(NEORV32_INC_PATH) $(ASM_INC) $< -o $@
 
# Compile app *.c sources
%.c.o: %.c
@$(CC) -c $(CC_OPTS) -I $(NEORV32_INC_PATH) $(APP_INC) $< -o $@
 
# Compile app *.cpp sources
%.cpp.o: %.cpp
@$(CC) -c $(CC_OPTS) -I $(NEORV32_INC_PATH) $(APP_INC) $< -o $@
 
# Link object files and show memory utilization
main.elf: $(OBJ)
@$(CC) $(CC_OPTS) -T $(LD_SCRIPT) $(OBJ) -o $@
@echo "Memory utilization:"
@$(SIZE) main.elf
 
# Assembly listing file (for debugging)
$(APP_ASM): main.elf
@$(OBJDUMP) -D -S -z $< > $@
 
# Generate final executable from .text + .rodata + .data (in THIS order!)
main.bin: main.elf $(APP_ASM)
@$(OBJCOPY) -I elf32-little $< -j .text -O binary text.bin
@$(OBJCOPY) -I elf32-little $< -j .rodata -O binary rodata.bin
@$(OBJCOPY) -I elf32-little $< -j .data -O binary data.bin
@cat text.bin rodata.bin data.bin > $@
@rm -f text.bin rodata.bin data.bin
 
 
# -----------------------------------------------------------------------------
# Application targets: Generate binary executable, install (as VHDL file)
# -----------------------------------------------------------------------------
# Generate NEORV32 executable image for upload via bootloader
$(APP_EXE): main.bin $(IMAGE_GEN)
@set -e
@$(IMAGE_GEN) -app_bin $< $@ $(shell basename $(CURDIR))
@echo "Executable ($(APP_EXE)) size in bytes:"
@wc -c < $(APP_EXE)
 
# Generate NEORV32 executable VHDL boot image
$(APP_IMG): main.bin $(IMAGE_GEN)
@set -e
@$(IMAGE_GEN) -app_img $< $@ $(shell basename $(CURDIR))
@echo "Installing application image to $(NEORV32_RTL_PATH)/$(APP_IMG)"
@cp $(APP_IMG) $(NEORV32_RTL_PATH)/.
 
 
# -----------------------------------------------------------------------------
# Bootloader targets
# -----------------------------------------------------------------------------
# Create and install bootloader VHDL init image
$(BOOT_IMG): main.bin $(IMAGE_GEN)
@set -e
@$(IMAGE_GEN) -bld_img $< $(BOOT_IMG) $(shell basename $(CURDIR))
@echo "Installing bootloader image to $(NEORV32_RTL_PATH)/$(BOOT_IMG)"
@cp $(BOOT_IMG) $(NEORV32_RTL_PATH)/.
 
# Just an alias that
bootloader: $(BOOT_IMG)
 
 
# -----------------------------------------------------------------------------
# Check toolchain
# -----------------------------------------------------------------------------
check: $(IMAGE_GEN)
@echo "---------------- Check: NEORV32_HOME folder ----------------"
ifneq ($(shell [ -e $(NEORV32_HOME_MARKER) ] && echo 1 || echo 0 ), 1)
$(error NEORV32_HOME folder not found!)
endif
@echo "NEORV32_HOME: $(NEORV32_HOME)"
@echo "---------------- Check: $(CC) ----------------"
@$(CC) -v
@echo "---------------- Check: $(OBJDUMP) ----------------"
@$(OBJDUMP) -V
@echo "---------------- Check: $(OBJCOPY) ----------------"
@$(OBJCOPY) -V
@echo "---------------- Check: $(SIZE) ----------------"
@$(SIZE) -V
@echo "---------------- Check: NEORV32 image_gen ----------------"
@$(IMAGE_GEN) -help
@echo "---------------- Check: Native GCC ----------------"
@$(CC_X86) -v
@echo
@echo "Toolchain check OK"
 
 
# -----------------------------------------------------------------------------
# Show configuration
# -----------------------------------------------------------------------------
info:
@echo "---------------- Info: Project ----------------"
@echo "Project folder: $(shell basename $(CURDIR))"
@echo "Source files: $(APP_SRC)"
@echo "Include folder(s): $(APP_INC)"
@echo "ASM include folder(s): $(ASM_INC)"
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
@echo "$(NEORV32_INC_PATH)"
@echo "---------------- Info: Objects ----------------"
@echo "Project object files:"
@echo "$(OBJ)"
@echo "---------------- Info: RISC-V CPU ----------------"
@echo "MARCH: $(MARCH)"
@echo "MABI: $(MABI)"
@echo "---------------- Info: Toolchain ----------------"
@echo "Toolchain: $(RISCV_TOLLCHAIN)"
@echo "CC: $(CC)"
@echo "OBJDUMP: $(OBJDUMP)"
@echo "OBJCOPY: $(OBJCOPY)"
@echo "SIZE: $(SIZE)"
@echo "---------------- Info: Compiler Libraries ----------------"
@echo "LIBGCC:"
@$(CC) -print-libgcc-file-name
@echo "SEARCH-DIRS:"
@$(CC) -print-search-dirs
@echo "---------------- Info: Flags ----------------"
@echo "USER_FLAGS: $(USER_FLAGS)"
@echo "CC_OPTS: $(CC_OPTS)"
@echo "---------------- Info: Host Native GCC Flags ----------------"
@echo "CC_X86: $(CC_X86)"
 
 
# -----------------------------------------------------------------------------
# Show final ELF details (just for debugging)
# -----------------------------------------------------------------------------
elf_info: main.elf
@$(OBJDUMP) -x main.elf
 
 
# -----------------------------------------------------------------------------
# Help
# -----------------------------------------------------------------------------
help:
@echo "<<< NEORV32 Application Makefile >>>"
@echo "Make sure to add the bin folder of RISC-V GCC to your PATH variable."
@echo "Targets:"
@echo " help - show this text"
@echo " check - check toolchain"
@echo " info - show makefile/toolchain configuration"
@echo " exe - compile and generate <neorv32_exe.bin> executable for upload via bootloader"
@echo " install - compile, generate and install VHDL IMEM boot image (for application)"
@echo " all - compile and generate <neorv32_exe.bin> executable for upload via bootloader and generate and install VHDL IMEM boot image (for application)"
@echo " clean - clean up project"
@echo " clean_all - clean up project, core libraries and image generator"
@echo " bootloader - compile, generate and install VHDL BOOTROM boot image (for bootloader only!)"
 
 
# -----------------------------------------------------------------------------
# Clean up
# -----------------------------------------------------------------------------
clean:
@rm -f *.elf *.o *.bin *.out *.asm *.vhd
 
clean_all: clean
@rm -f $(OBJ) $(IMAGE_GEN)
/demo_pwm/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/demo_trng/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/demo_twi/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/demo_wdt/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"
/game_of_life/main.c
54,6 → 54,10
#define NUM_CELLS_Y 40
/** Delay between generations in ms */
#define GEN_DELAY 500
/** Symbol for dead cell */
#define CELL_DEAD (' ')
/** Symbol for alive cell */
#define CELL_ALIVE ('#')
/**@}*/
 
 
172,7 → 176,10
cell = get_cell(u, x, y); // state of current cell
n = get_neighborhood(u, x, y); // number of living neighbor cells
 
// classic rule set
// -- classic rule set --
// if center cell is dead -> cell comes to life when there are exactly 3 living cells around
// if center cell is alive -> stay alive if there are 2 or three living cells around
// else -> cell is/becomes dead
if (((cell == 0) && (n == 3)) || ((cell != 0) && ((n == 2) || (n == 3)))) {
set_cell((u + 1) & 1, x, y);
}
214,9 → 221,9
for (x=0; x<NUM_CELLS_X; x++) {
if (get_cell(u, x, y))
neorv32_uart_putc('#');
neorv32_uart_putc((char)CELL_ALIVE);
else
neorv32_uart_putc(' ');
neorv32_uart_putc((char)CELL_DEAD);
}
 
// end of line
/game_of_life/makefile
86,7 → 86,7
# Application start-up code
CORE_SRC += $(NEORV32_COM_PATH)/crt0.S
 
# Default linker script
# Linker script
LD_SCRIPT = $(NEORV32_COM_PATH)/neorv32.ld
 
# Main output files
141,9 → 141,8
all: $(APP_ASM) $(APP_EXE) $(APP_IMG)
 
# Check if making bootloader
# This will disable some functions in crt0.S that are not relevant for the bootloader
target bootloader: USER_FLAGS += -D__BOOTLOADER_START_CODE__
target bootloader: LD_SCRIPT = $(NEORV32_COM_PATH)/bootloader_neorv32.ld
# Use different base address and legth for instruction memory/"rom" (BOOTMEM instead of IMEM)
target bootloader: CC_OPTS += -Wl,--defsym=make_bootloader=1
 
 
# -----------------------------------------------------------------------------
262,7 → 261,6
@echo "---------------- Info: NEORV32 ----------------"
@echo "NEORV32 home folder (NEORV32_HOME): $(NEORV32_HOME)"
@echo "IMAGE_GEN: $(IMAGE_GEN)"
@echo "LD script: $(LD_SCRIPT)"
@echo "Core source files:"
@echo "$(CORE_SRC)"
@echo "Core include folder:"

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