沁恒CH32V307VCT6最小系统板，引出了所有IO口，一个Type-C连接到USB2.0全速OTG接口，一个Flash芯片 型号W25Q64 容量64Mbit 连接到SPI2接口，板上还有TL432电压基准1.25V(实测1.246V左右)可通过跳线连接到PC3的AD13，还有3.29V基准通过0欧电阻可连接到ADC参考电压VREF。
画了个 MSP430F149的最小系统板 开源出来了：https://blog.zeruns.tech/archives/713.html
STM32F030C8T6最小系统板和流水灯（原理图和PCB）：https://blog.zeruns.tech/archives/715.html
CH32V307VCT6简介
CH32V 系列是基于青稞 32 位 RISC-V 设计的工业级通用微控制器。全系产品加入硬件堆栈区、快速中断入口等设计，相比标准大大提高了中断响应速度。CH32V303_305_307 系列搭载 V4F 内核，支持单精度浮点指令集，具有更高的运算性能。在产品功能上支持 144MHz 主频零等待运行，并根据不同应用方向提供了具有特色的资源结构，例如 8 组 USART/UART 串口，4 组电机定时器，内置 PHY 收发器的USB2.0 高速接口（480Mbps），千兆以太网 MAC 等。
沁恒官网产品简介：https://url.zeruns.tech/Hcd8p
样品免费申请地址（运费到付）：https://url.zeruns.tech/x67TF
芯片数据手册下载地址：https://url.zeruns.tech/hDzqw 提取码：cn7c
实物图
原理图
PCB
顶层：
TL432的1.25V（实测1.246V左右）电压基准可通过H8插跳线帽接到GPIOPC3的ADC13接口。
SW3是控制BOOT0和1自举引脚的，可以设置自举模式（具体看芯片手册2.5.2的 片上存储器及自举模式），都打到低电平（关闭）就行。
H9排针时用于接WCH-Link烧录代码用的。
H5排针是用于选择VBAT引脚的电源，如果没插电池就通过跳线帽接到3.3V电源，如果插了电池可接到BAT。
底层：
如果不需要外接VDDA电源和VREF要将底面的R11和R7接上0欧电阻，然后VREF+可以通过R8和R9选择接LDO降压出来的3.3V电源或者TL432输出的3.29V参考电压，正常接R9即可 另一个空着。
元件购买地址
0805电阻样品本：https://u.jd.com/DzK9k0O
0805电容样品本：https://s.click.taobao.com/cTZzzDu
CH32V307VCT6：https://s.click.taobao.com/5SjzzDu
W25Q64JV：https://s.click.taobao.com/YAv6NEu
TL432：https://s.click.taobao.com/t3AzzDu
WCH-Link：https://s.click.taobao.com/m6KyzDu
排针：https://u.jd.com/DbKUBDu
元器件购买推荐立创商城，优惠注册链接：https://activity.szlcsc.com/invite/D03E5B9CEAAE70A4.html
板上所有元器件都可以在立创商城买到，在开源链接里的BOM表那点立即到立创商城下单可将用到的元器件一键导入到购物车。
例程代码
完整工程下载地址：https://url.zeruns.tech/2q4tX 提取码：9527
立创开源平台开源链接：https://url.zeruns.tech/Avda8
例程用了 Harmony LiteOS-M 系统，例程中建了3个任务，分别是：LED2间隔500ms闪一下，LED3间隔1秒闪一下，LED4间隔2秒闪一次。（上面的动图速度加快了1.5倍）
工程要用MounRiver Studio软件打开。
main.c的代码：
/*
* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. 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.
*/
#include "debug.h"
#include "los_tick.h"
#include "los_task.h"
#include "los_config.h"
#include "los_interrupt.h"
#include "los_debug.h"
#include "los_compiler.h"
/* Global define */
/* Global Variable */
__attribute__((aligned (8))) UINT8 g_memStart[LOSCFG_SYS_HEAP_SIZE];
UINT32 g_VlaueSp=0;
u8 i = 0,j=0,k=0;
/*********************************************************************
* @fn taskSampleEntry3
*
* @brief taskSampleEntry3 program.
*
* @return none
*/
VOID taskSampleEntry3(VOID)
{
while(1) {
LOS_TaskDelay(2000);
printf("taskSampleEntry3 running,task3 SP:%08x\n",__get_SP());
GPIO_WriteBit(GPIOD, GPIO_Pin_13, (k == 0) ? (k = Bit_SET) : (k = Bit_RESET));
}
}
/*********************************************************************
* @fn taskSampleEntry2
*
* @brief taskSampleEntry2 program.
*
* @return none
*/
VOID taskSampleEntry2(VOID)
{
while(1) {
LOS_TaskDelay(1000);
printf("taskSampleEntry2 running,task2 SP:%08x\n",__get_SP());
GPIO_WriteBit(GPIOD, GPIO_Pin_12, (j == 0) ? (j = Bit_SET) : (j = Bit_RESET));
}
}
/*********************************************************************
* @fn taskSampleEntry1
*
* @brief taskSampleEntry1 program.
*
* @return none
*/
VOID taskSampleEntry1(VOID)
{
while(1) {
LOS_TaskDelay(500);
printf("taskSampleEntry1 running,task1 SP:%08x\n",__get_SP());
GPIO_WriteBit(GPIOD, GPIO_Pin_11, (i == 0) ? (i = Bit_SET) : (i = Bit_RESET));
}
}
// https://blog.zeruns.tech
/*********************************************************************
* @fn EXTI0_INT_INIT
*
* @brief Initializes EXTI0 collection.
*
* @return none
*/
void EXTI0_INT_INIT(void)
{
GPIO_InitTypeDef GPIO_InitStructure={0};
EXTI_InitTypeDef EXTI_InitStructure={0};
NVIC_InitTypeDef NVIC_InitStructure={0};
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* GPIOA ----> EXTI_Line0 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line=EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 4;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void GPIO_INIT(void) {
GPIO_InitTypeDef GPIO_InitStructure = { 0 };
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_11|GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
/*********************************************************************
* @fn taskSample
*
* @brief taskSample program.
*
* @return none
*/
UINT32 taskSample(VOID) {
UINT32 uwRet;
UINT32 taskID1, taskID2, taskID3;
TSK_INIT_PARAM_S stTask = { 0 };
stTask.pfnTaskEntry = (TSK_ENTRY_FUNC) taskSampleEntry1;
stTask.uwStackSize = 0X500;
stTask.pcName = "taskSampleEntry1";
stTask.usTaskPrio = 6;/* 高优先级 */
uwRet = LOS_TaskCreate(&taskID1, &stTask);
if (uwRet != LOS_OK) {
printf("create task1 failed\n");
}
stTask.pfnTaskEntry = (TSK_ENTRY_FUNC) taskSampleEntry2;
stTask.uwStackSize = 0X500;
stTask.pcName = "taskSampleEntry2";
stTask.usTaskPrio = 7;/* 低优先级 */
uwRet = LOS_TaskCreate(&taskID2, &stTask);
if (uwRet != LOS_OK) {
printf("create task2 failed\n");
}
stTask.pfnTaskEntry = (TSK_ENTRY_FUNC) taskSampleEntry3;
stTask.uwStackSize = 0X500;
stTask.pcName = "taskSampleEntry3";
stTask.usTaskPrio = 7;/* 低优先级 */
uwRet = LOS_TaskCreate(&taskID3, &stTask);
if (uwRet != LOS_OK) {
printf("create task3 failed\n");
}
// https://blog.vpszj.cn
EXTI0_INT_INIT();
return LOS_OK;
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
LITE_OS_SEC_TEXT_INIT int main(void)
{
unsigned int ret;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
SystemCoreClockUpdate();
Delay_Init();
GPIO_INIT();
USART_Printf_Init(115200);
printf("SystemClk:%d\r\n",SystemCoreClock);
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
ret = LOS_KernelInit();
taskSample();
if (ret == LOS_OK)
{
LOS_Start();
}
GPIO_WriteBit(GPIOC, GPIO_Pin_1,RESET);
while (1) {
__asm volatile("nop");
}
}
/*********************************************************************
* @fn EXTI0_IRQHandler
*
* @brief This function handles EXTI0 Handler.
*
* @return none
*/
void EXTI0_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI0_IRQHandler(void)
{
/* 中断栈使用的是原来调用main设置的值，将中断栈和线程栈分开，这样线程跳中断，中断函数如果嵌套深度较大，不至于
* 线程栈被压满溢出，但是采用当前方式，线程进中断时，编译器保存到的16个caller寄存器任然压入线程栈，如果需要希
* 望caller寄存器压入中断栈，则中断函数的入口和出口需要使用汇编，中间调用用户中断处理函数即可，详见los_exc.S
* 中的ipq_entry例子
* */
GET_INT_SP();
HalIntEnter();
if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
{
g_VlaueSp= __get_SP();
printf("Run at EXTI:");
printf("interruption sp:%08x\r\n",g_VlaueSp);
HalDisplayTaskInfo();
EXTI_ClearITPendingBit(EXTI_Line0); /* Clear Flag */
}
HalIntExit();
FREE_INT_SP();
}
————————————————
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
原文链接：https://blog.csdn.net/u012513463/article/details/131507945
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