板子.c
/*
Copyright (c) 2006-2019, RT-Thread Development Team
SPDX-License-Identifier: Apache-2.0
Change Logs:
Date Author Notes
2017-07-24 Tanek the first version
2018-11-12 Ernest Chen modify copyright
/
#include <stdio.h>
#include <stdint.h>
#include <rthw.h>
#include <rtthread.h>
//#include "uart.h"
#include "NUC029xGE.h"
#define PLL_CLOCK 72000000
#define _SCB_BASE (0xE000E010UL)
#define _SYSTICK_CTRL ((rt_uint32_t )(_SCB_BASE + 0x0))
#define _SYSTICK_LOAD ((rt_uint32_t )(_SCB_BASE + 0x4))
#define _SYSTICK_VAL ((rt_uint32_t )(_SCB_BASE + 0x8))
#define _SYSTICK_CALIB ((rt_uint32_t )(_SCB_BASE + 0xC))
#define _SYSTICK_PRI ((rt_uint8_t )(0xE000ED23UL))
// Updates the variable SystemCoreClock and must be called
// whenever the core clock is changed during program execution.
extern void SystemCoreClockUpdate(void);
// Holds the system core clock, which is the system clock
// frequency supplied to the SysTick timer and the processor
// core clock.
extern uint32_t SystemCoreClock;
static uint32_t _SysTick_Config(rt_uint32_t ticks)
{
if ((ticks - 1) > 0xFFFFFF)
{
return 1;
}
_SYSTICK_LOAD = ticks - 1;
_SYSTICK_PRI = 0xFF;
_SYSTICK_VAL = 0;
_SYSTICK_CTRL = 0x07;
return 0;
}
#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
#define RT_HEAP_SIZE 1024
static uint32_t rt_heap[RT_HEAP_SIZE]; // heap default size: 4K(1024 * 4)
RT_WEAK void rt_heap_begin_get(void)
{
return rt_heap;
}
RT_WEAK void rt_heap_end_get(void)
{
return rt_heap + RT_HEAP_SIZE;
}
#endif
/自己添加跟硬件有关的时钟初始化/
static void rt_hw_system_init(void)
{
/---------------------------------------------------------------------------------------------------------/
/ Init System Clock /
/---------------------------------------------------------------------------------------------------------/
SYS_UnlockReg();
/ Enable HIRC clock (Internal RC 22.1184MHz) /
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/ Wait for HIRC clock ready /
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/ Select HCLK clock source as HIRC and HCLK clock divider as 1 /
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/ Set core clock as PLL_CLOCK from PLL /
CLK_SetCoreClock(PLL_CLOCK);
/ Set SysTick clock source to HCLK source divide 2 /
CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);
SYS_LockReg();
}
/自己添加跟串口有关的时钟初始化/
static void rt_hw_usart_init()
{
/ Unlock protected registers /
SYS_UnlockReg();
/ Enable HXT clock (external XTAL 12MHz) /
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/ Wait for HXT clock ready /
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/ Enable UART module clock /
CLK_EnableModuleClock(UART0_MODULE);
/ Select UART module clock source as HXT and UART module clock divider as 1 /
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/---------------------------------------------------------------------------------------------------------/
/ Init I/O Multi-function /
/---------------------------------------------------------------------------------------------------------/
/ Set multi-function pins for UART0 RXD and TXD /
SYS->GPA_MFPL &= ~(SYS_GPA_MFPL_PA2MFP_Msk | SYS_GPA_MFPL_PA3MFP_Msk);
SYS->GPA_MFPL |= (SYS_GPA_MFPL_PA3MFP_UART0_RXD | SYS_GPA_MFPL_PA2MFP_UART0_TXD);
/ Lock protected registers /
SYS_LockReg();
/ Reset UART0 /
SYS_ResetModule(UART0_RST);
/ Configure UART0 and set UART0 baud rate /
UART_Open(UART0, 115200);
}
/*
This function will initial your board.
/
void rt_hw_board_init()
{
/ Configure the system clock /
rt_hw_system_init();
/ System Clock Update /
SystemCoreClockUpdate();
/ System Tick Configuration /
_SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
/ Initial usart deriver, and set console device /
rt_hw_usart_init();
/ Call components board initial (use INIT_BOARD_EXPORT()) /
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif
}
void SysTick_Handler(void)
{
/ enter interrupt /
rt_interrupt_enter();
rt_tick_increase();
/ leave interrupt */
rt_interrupt_leave();
}
/自己添加对接串口控制台/
void rt_hw_console_output(const char *str)
{
printf("%s",str);
}
char rt_hw_console_getchar(void)
{
return getchar();
}
rtconfig.h
/* RT-Thread config file */
#ifndef RTTHREAD_CFG_H
#define RTTHREAD_CFG_H
#if defined(__CC_ARM) || defined(__CLANG_ARM)
//#include "RTE_Components.h"
//#if defined(RTE_USING_FINSH)
#define RT_USING_FINSH
//#endif //RTE_USING_FINSH
#endif //(__CC_ARM) || (__CLANG_ARM)
// <<< Use Configuration Wizard in Context Menu >>>
// Basic Configuration
// Maximal level of thread priority <8-256>
// Default: 32
#define RT_THREAD_PRIORITY_MAX 8
// OS tick per second
// Default: 1000 (1ms)
#define RT_TICK_PER_SECOND 1000
// Alignment size for CPU architecture data access
// Default: 4
#define RT_ALIGN_SIZE 4
// the max length of object name<2-16>
// Default: 8
#define RT_NAME_MAX 8
// Using RT-Thread components initialization
// Using RT-Thread components initialization
#define RT_USING_COMPONENTS_INIT
//
#define RT_USING_USER_MAIN
// the stack size of main thread<1-4086>
// Default: 512
#define RT_MAIN_THREAD_STACK_SIZE 256
//
// Debug Configuration
// enable kernel debug configuration
// Default: enable kernel debug configuration
#define RT_DEBUG
//
// enable components initialization debug configuration<0-1>
// Default: 0
#define RT_DEBUG_INIT 0
// thread stack over flow detect
// Diable Thread stack over flow detect
//#define RT_USING_OVERFLOW_CHECK
//
//
// Hook Configuration
// using hook
// using hook
#define RT_USING_HOOK
//
// using idle hook
// using idle hook
//#define RT_USING_IDLE_HOOK
//
//
// Software timers Configuration
// Enables user timers
#define RT_USING_TIMER_SOFT 0
#if RT_USING_TIMER_SOFT == 0
#undef RT_USING_TIMER_SOFT
#endif
// The priority level of timer thread <0-31>
// Default: 4
#define RT_TIMER_THREAD_PRIO 4
// The stack size of timer thread <0-8192>
// Default: 512
#define RT_TIMER_THREAD_STACK_SIZE 512
//
// IPC(Inter-process communication) Configuration
// Using Semaphore
// Using Semaphore
#define RT_USING_SEMAPHORE
//
// Using Mutex
// Using Mutex
//#define RT_USING_MUTEX
//
// Using Event
// Using Event
//#define RT_USING_EVENT
//
// Using MailBox
// Using MailBox
#define RT_USING_MAILBOX
//
// Using Message Queue
// Using Message Queue
//#define RT_USING_MESSAGEQUEUE
//
//
// Memory Management Configuration
// Dynamic Heap Management
// Dynamic Heap Management
#define RT_USING_HEAP
//
// using small memory
// using small memory
#define RT_USING_SMALL_MEM
//
// using tiny size of memory
// using tiny size of memory
//#define RT_USING_TINY_SIZE
//
//
// Console Configuration
// Using console
// Using console
#define RT_USING_CONSOLE
//
// the buffer size of console <1-1024>
// the buffer size of console
// Default: 128 (128Byte)
#define RT_CONSOLEBUF_SIZE 128
//
#if defined(RT_USING_FINSH)
#define FINSH_USING_MSH
#define FINSH_USING_MSH_ONLY
// Finsh Configuration
// the priority of finsh thread <1-7>
// the priority of finsh thread
// Default: 6
#define __FINSH_THREAD_PRIORITY 5
#define FINSH_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX / 8 * __FINSH_THREAD_PRIORITY + 1)
// the stack of finsh thread <1-4096>
// the stack of finsh thread
// Default: 4096 (4096Byte)
#define FINSH_THREAD_STACK_SIZE 512
// the history lines of finsh thread <1-32>
// the history lines of finsh thread
// Default: 5
#define FINSH_HISTORY_LINES 1
#define FINSH_USING_SYMTAB
//
#endif
// <<< end of configuration section >>>
#endif
原作者:高阳9992006
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