【Avnet | NXP FRDM-MCXN947试用活动】移植FreeRTOS并驱动LED计数
这篇移植FreeRTOS并驱动LED计数。一、下载FreeRTOS源码
下载地址：https://www.freertos.org/
我下载的是以下版本。
二、添加文件到工程
添加下载的FreeRTOS文件到项目中
三、程序代码
3.1、FreeRTOSConfig.h
/*
* FreeRTOS V202212.01
* 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.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_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.
*----------------------------------------------------------*/
/* Ensure definitions are only used by the compiler, and not by the assembler. */
#if defined(__ICCARM__) || defined(__CC_ARM) || defined(__GNUC__)
#include <stdint.h>
extern uint32_t SystemCoreClock;
#endif
#ifndef configENABLE_FPU
#define configENABLE_FPU 1
#endif
#ifndef configENABLE_MPU
#define configENABLE_MPU 0
#endif
#ifndef configENABLE_TRUSTZONE
#define configENABLE_TRUSTZONE 0
#endif
#ifndef configRUN_FREERTOS_SECURE_ONLY
#define configRUN_FREERTOS_SECURE_ONLY 1
#endif
#define configUSE_PREEMPTION 1
#define configSUPPORT_STATIC_ALLOCATION 0//1
#define configSUPPORT_DYNAMIC_ALLOCATION 1
#define configUSE_IDLE_HOOK 0
#define configUSE_TICK_HOOK 0
#define configCPU_CLOCK_HZ ( SystemCoreClock )
#define configTICK_RATE_HZ ( ( TickType_t ) 1000 )
#define configMAX_PRIORITIES ( 56 )
#define configMINIMAL_STACK_SIZE ( ( uint16_t ) 512 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) 15 * 1024 )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 1
#define configUSE_16_BIT_TICKS 0
#define configUSE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 8
#define configUSE_RECURSIVE_MUTEXES 1
#define configUSE_COUNTING_SEMAPHORES 1
#define configUSE_PORT_OPTIMISED_TASK_SELECTION 0
#define configUSE_MALLOC_FAILED_HOOK 0//1
#define configCHECK_FOR_STACK_OVERFLOW 0//2
/* Defaults to size_t for backward compatibility, but can be changed
* if lengths will always be less than the number of bytes in a size_t. */
#define configMESSAGE_BUFFER_LENGTH_TYPE size_t
/* USER CODE END MESSAGE_BUFFER_LENGTH_TYPE */
/* Software timer definitions. */
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY ( 2 )
#define configTIMER_QUEUE_LENGTH 10
#define configTIMER_TASK_STACK_DEPTH 256
/* 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 0
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
#define INCLUDE_xTaskGetSchedulerState 1
#define INCLUDE_xTimerPendFunctionCall 1
#define INCLUDE_xQueueGetMutexHolder 1
#define INCLUDE_uxTaskGetStackHighWaterMark 1
#define INCLUDE_eTaskGetState 1
/* Cortex-M specific definitions. */
#ifdef __NVIC_PRIO_BITS
/* __BVIC_PRIO_BITS will be specified when CMSIS is being used. */
#define configPRIO_BITS __NVIC_PRIO_BITS
#else
#define configPRIO_BITS 4
#endif
/* The lowest interrupt priority that can be used in a call to a "set priority"
* function. */
#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY 15
/* The highest interrupt priority that can be used by any interrupt service
* routine that makes calls to interrupt safe FreeRTOS API functions.DO NOT
* CALL INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT THAT HAS A
* HIGHER PRIORITY THAN THIS! (higher priorities are lower numeric values. */
#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5
/* Interrupt priorities used by the kernel port layer itself.These are generic
* to all Cortex-M ports, and do not rely on any particular library functions. */
#define configKERNEL_INTERRUPT_PRIORITY ( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << ( 8 - configPRIO_BITS ) )
/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
#define configMAX_SYSCALL_INTERRUPT_PRIORITY ( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << ( 8 - configPRIO_BITS ) )
/* Normal assert() semantics without relying on the provision of an assert.h
* header file. */
#define configASSERT( x ) if ( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }
/* Definitions that map the FreeRTOS port interrupt handlers to their CMSIS
* standard names. */
#define vPortSVCHandler SVC_Handler
#define xPortPendSVHandler PendSV_Handler
#define xPortSysTickHandler SysTick_Handler
/* Allow system call from within FreeRTOS kernel only. */
#define configENFORCE_SYSTEM_CALLS_FROM_KERNEL_ONLY 1
/* STM32H743 has 16 MPU regions and therefore it is necessary to configure
* configTOTAL_MPU_REGIONS correctly. */
#define configTOTAL_MPU_REGIONS 16
/* The default TEX,S,C,B setting marks the SRAM as shareable and as a result,
* disables cache. Do not mark the SRAM as shareable because caching is being
* used. TEX=0, S=0, C=1, B=1. */
#define configTEX_S_C_B_SRAM ( 0x03UL )
#endif /* FREERTOS_CONFIG_H */
3.2、f_task.c
<blockquote>#include "main.h"
3.3、main.c
#include "main.h"
int main(void)
{
uint8_t i;
CLOCK_EnableClock(kCLOCK_Gpio0);
BOARD_InitDEBUG_UARTPins();
BOARD_PowerMode_OD();
BOARD_InitBootClocks();
BOARD_InitDebugConsole();
init_led();
task_create();
while (1)
{
}
}
3.3、lm8168.c#include "main.h"
const uint8_t led_num={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6 };
uint32_t dt=0;
uint8_t cnt=0;
uint8_t jsflag=0;
uint8_t disp_temp={0,0,0,0};
uint8_t disp_js=0;
void delay(void)
{
volatile uint32_t i = 0;
for (i = 0; i < 100; ++i)
{
__asm("NOP"); /* delay */
}
}
void init_lm8168(void)
{
init_lm8168b_pins();
LM8168_CLK_L();
LM8168_DAT_L();
LM8168_EN_L();
}
void lm8168_writebyte(uint32_t dat)
{
uint8_t i=0;
LM8168_CLK_L();
LM8168_DAT_L();
LM8168_EN_L();
for(i=0;i<18;i++)
{
if(dat&0x01)
{
LM8168_DAT_H();
}
else
{
LM8168_DAT_L();
}
dat=dat>>1;
LM8168_CLK_L();
delay();
LM8168_CLK_H();
delay();
}
}
void lm8168_writedat(uint8_t dat, uint8_t seg)
{
uint32_t dt=0;
dt |= (seg&0x3f)<<1;
dt |= dat<<10;
lm8168_writebyte(dt);
LM8168_EN_H();
delay();
LM8168_EN_L();
}
四、程序运行
下载程序后，串口输出
LED显示
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