CSSC-PC更新了7个文件
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murmur-CSSC
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### 颜色值映射过程：
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1. 计算渐变色并分为N个
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2. 计算index=round((value-min)/((max-min)/N))，四舍五入
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3. 发送colormap[0]至colormap[index]
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3. 发送colormap[0]至colormap[index]
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### 主控：
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华大[[MCU/华大/选型#[HC32L110C6](https //www.hdsc.com.cn/Category82-1389)|HC32L、HC32F]]系列及沁恒[[CH32V003]]系列，优选后者，便宜够用。
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53
DIY/器件定位.md
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53
DIY/器件定位.md
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---
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updated: 2024-06-20
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tags:
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- 低功耗
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- 屏
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- 器件库
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- BLE
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- mcu
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- led
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---
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## 方案对比
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| 方案 | 示例 | 优点 | 缺点 |
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| :------: | :---------: | :-----------: | :-----: |
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| MCU+收发IC | Lora、2.4GHz | 通信距离远、响应快程序复杂 | 成本高、体积大 |
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| 单MCU | BLE | 距离近，响应略慢 | 程序简单 |
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| | | | |
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定位需求本身不会远距离使用，响应时间在100ms内均可接受，故优选单MCU方案。
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## 单MCU方案
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MCU集成BLE，[[CH57x]]、[[CH582F]]等，单片约2元
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Host端工作于广播模式，每个器件盒作为独立节点工作于扫描模式。
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### 初始化
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节点产生UUID，Host据此与器件关联并存入数据库
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### 查找
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1. Host查找数据库找出与搜索关键字匹配的UUID，并列出器件列表
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2. 报文添加与指定器件列表关联的UUID及“仅查找”标识并持续广播
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3. 节点群上电，并扫描可用节点，若与自身UUID匹配则亮灯指示
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>节点端默认不带显示，可支持墨水屏显示器件列表。
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> 报文添加“编辑”标识可编辑器件列表，编辑模式下节点会连接Host，并在连接后主动上报器件列表
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> 为保证墨水屏寿命，每次节点上电均刷新屏幕
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### 休眠
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无线供电不用考虑休眠问题，上电后持续扫描即可。
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电池供电需考虑谨慎优化功耗，必须合理休眠。
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为调协功耗和响应速度，可设置两种唤醒间隔。
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> 非工作状态1分钟唤醒一次，最好添加外围电路，沿用无线供电逻辑高电平唤醒；
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> 工作状态1s唤醒一次。
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## 供电
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独立节点具有数量多，体积受限，功耗低的特点，供电方式直接影响使用体验。
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| | 优点 | 缺点 |
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|:----:|:---------------:|:--------------------------------:|
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| 无线供电 | 体积小，开发难度低，使用灵活 | 无外壳，从零设计，独立供电单元，节点位置不够灵活 |
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| 电池供电 | 成品墨水屏有外壳，自带电池供电 | 体积略大，有改造难度。主控特殊，不是常用的开发环境，有学习成本。 |
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## 存储盒
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5.5\*5.5cm盒性价比高，9元/30个。可容纳少量IC编带，能放1.54墨水屏
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9
MCU/WCH-南京沁恒/CH32V003.md
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9
MCU/WCH-南京沁恒/CH32V003.md
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---
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updated: 2024-06-20
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tags:
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- mcu
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- 串口
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- 低功耗
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---
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价格低，[第三方库](https://github.com/cnlohr/ch32v003fun)使用方便，样例多，维护勤，占用资源低
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![[Pasted image 20240620084329.png]]
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@ -1,4 +1,4 @@
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# 产品
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国产MCU的ADC性能基本不太行，所以手册一般不提供精度指标。经查询，华大部分产品有此指标。
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@ -1,3 +1,5 @@
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# 0.5块
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[[CH32V003]]，够用
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# 1-2块
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tssop封装，引脚少，rom/ram，适合简单功能 [HC32L110C6](https://www.hdsc.com.cn/Category82-1389) HC32F003、[HC32F005](https://www.hdsc.com.cn/Category83-1434)
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BIN
_resources/Pasted image 20240620084329.png
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BIN
_resources/Pasted image 20240620084329.png
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111
代码/状态机接收不定长数据.md
111
代码/状态机接收不定长数据.md
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> http://www.rimelink.com/nd.jsp?id=38&_np=105_315
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代码清单如下：
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```c
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/** * @brief Status of received communication frame */ typedef enum { STATUS_IDLE = (uint8_t)0, STATUS_HEAD, /* Rx Head=0x3C */ STATUS_TYPE, /* Rx Type */ STATUS_DATA, /* Data filed */ STATUS_TAIL, /* Tail=0x0D */ STATUS_END, /* End of this frame */ } COMM_TRM_STATUS_TypeDef; /** * @brief Data object for received communication frame */ typedef struct { uint8_t byCnt; /* Count of 1 field */ uint8_t byDataLen; /* Length of data field */ uint8_t byFrameLen; /* Length of frame */ COMM_TRM_STATUS_TypeDef eRxStatus; uint8_t a_byRxBuf[MAX_LEN_COMM_TRM_DATA]; } COMM_TRM_DATA; /** * @brief Data object for received communication frame. * @note Prevent race condition that accessed by both ISR and process. */ static COMM_TRM_DATA s_stComm2TrmData; /** * @brief Put a data that received by UART into buffer. * @note Prevent race condition this called by ISR. * @param uint8_t byData: the data received by UART. * @retval None */ void comm2trm_RxUartData(uint8_t byData) { /* Update status according to the received data */ switch (s_stComm2TrmData.eRxStatus) { case STATUS_IDLE: if (COMM_TRM_HEAD == byData) /* Is Head */ { s_stComm2TrmData.eRxStatus = STATUS_HEAD; } else { goto rx_exception; } break; case STATUS_HEAD: if (TYPE_INVALID_MIN < byData && byData < TYPE_INVALID_MAX) /* Valid type */ { s_stComm2TrmData.eRxStatus = STATUS_TYPE; } else { goto rx_exception; } break; case STATUS_TYPE: if (byData <= MAX_LEN_UART_FRAME_DATA) /* Valid data size */ { s_stComm2TrmData.eRxStatus = STATUS_DATA; s_stComm2TrmData.byDataLen = byData; } else { goto rx_exception; } break; case STATUS_DATA: if (s_stComm2TrmData.byCnt < s_stComm2TrmData.byDataLen) { ++s_stComm2TrmData.byCnt; } else { s_stComm2TrmData.eRxStatus = STATUS_TAIL; } break; case STATUS_TAIL: if (COMM_TRM_TAIL == byData) { /* We received a frame of data, now tell process to deal with it! */ process_poll(&Comm2TrmProcess); } else { goto rx_exception; } break; default: ASSERT(!"Error: Bad status of comm2trm_RxUartData().\r\n"); break; } /* Save the received data */ s_stComm2TrmData.a_byRxBuf[s_stComm2TrmData.byFrameLen++] = byData; return; rx_exception: ClearCommFrame(); return; } ```
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/**
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* @brief Status of received communication frame
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*/
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typedef enum
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{
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STATUS_IDLE = (uint8_t)0,
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STATUS_HEAD, /* Rx Head=0x3C */
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STATUS_TYPE, /* Rx Type */
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STATUS_DATA, /* Data filed */
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STATUS_TAIL, /* Tail=0x0D */
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STATUS_END, /* End of this frame */
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} COMM_TRM_STATUS_TypeDef;
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/**
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* @brief Data object for received communication frame
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*/
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typedef struct
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{
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uint8_t byCnt; /* Count of 1 field */
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uint8_t byDataLen; /* Length of data field */
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uint8_t byFrameLen; /* Length of frame */
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COMM_TRM_STATUS_TypeDef eRxStatus;
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uint8_t a_byRxBuf[MAX_LEN_COMM_TRM_DATA];
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} COMM_TRM_DATA;
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/**
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* @brief Data object for received communication frame.
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* @note Prevent race condition that accessed by both ISR and process.
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*/
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static COMM_TRM_DATA s_stComm2TrmData;
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/**
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* @brief Put a data that received by UART into buffer.
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* @note Prevent race condition this called by ISR.
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* @param uint8_t byData: the data received by UART.
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* @retval None
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*/
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void comm2trm_RxUartData(uint8_t byData)
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{
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/* Update status according to the received data */
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switch (s_stComm2TrmData.eRxStatus)
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{
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case STATUS_IDLE:
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if (COMM_TRM_HEAD == byData) /* Is Head */
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{
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s_stComm2TrmData.eRxStatus = STATUS_HEAD;
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}
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else
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{
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goto rx_exception;
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}
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break;
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case STATUS_HEAD:
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if (TYPE_INVALID_MIN < byData && byData < TYPE_INVALID_MAX) /* Valid type */
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{
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s_stComm2TrmData.eRxStatus = STATUS_TYPE;
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}
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else
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{
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goto rx_exception;
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}
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break;
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case STATUS_TYPE:
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if (byData <= MAX_LEN_UART_FRAME_DATA) /* Valid data size */
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{
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s_stComm2TrmData.eRxStatus = STATUS_DATA;
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s_stComm2TrmData.byDataLen = byData;
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}
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else
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{
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goto rx_exception;
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}
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break;
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case STATUS_DATA:
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if (s_stComm2TrmData.byCnt < s_stComm2TrmData.byDataLen)
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{
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++s_stComm2TrmData.byCnt;
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}
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else
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{
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s_stComm2TrmData.eRxStatus = STATUS_TAIL;
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}
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break;
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case STATUS_TAIL:
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if (COMM_TRM_TAIL == byData)
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{
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/* We received a frame of data, now tell process to deal with it! */
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process_poll(&Comm2TrmProcess);
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}
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else
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{
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goto rx_exception;
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}
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break;
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default:
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ASSERT(!"Error: Bad status of comm2trm_RxUartData().\r\n");
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break;
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}
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/* Save the received data */
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s_stComm2TrmData.a_byRxBuf[s_stComm2TrmData.byFrameLen++] = byData;
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return;
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rx_exception:
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ClearCommFrame();
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return;
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}
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```
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