# clock **Repository Path**: wzgosc/clock ## Basic Information - **Project Name**: clock - **Description**: 时钟程序 - **Primary Language**: C - **License**: AGPL-3.0 - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2021-10-31 - **Last Updated**: 2021-11-28 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # clock #### 介绍 时钟系统程序 ### 技术栈 - bcm2835 操作 GPIO - 使用 libcurl 作为开发http的库 ### 目录结构 - builds 编译存放目录 - docs 文档目录 - images READNE.md文档图片存放目录 - objs 生产的可执行文件目录 - src 源码存放目录 - core 核心代码目录 - fonts 字体目录 - images 存放图片元数据 - test 核心代码测试 main.cpp ```text . ├── LICENSE ├── README.en.md ├── README.md ├── builds │   └── Makefile ├── docs │   └── raspberry-pi-2-b-reduced-schematics.pdf ├── images │   └── physical.jpg ├── objs └── src ├── core │   ├── epd420RWS19A.cpp │   ├── epd420RWS19A.h │   ├── epdif.cpp │   ├── epdif.h │   ├── epdpaint.cpp │   ├── epdpaint.h │   ├── fonts │   │   ├── font12.c │   │   ├── font16.c │   │   ├── font20.c │   │   ├── font24.c │   │   ├── font8.c │   │   └── fonts.h │   └── image │   ├── imagedata.cpp │   └── imagedata.h └── test └── main.cpp ``` #### 使用说明 ****************************************************************************** == Development Environment == * OS: Raspbian for Raspberry Pi * Libraries: bcm2835 、libcurl == Raspberry Pi physical == ![](images/physical.jpg ) == Raspberry Pi GPIO Pin map == +-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | | | 3.3v | | | 1 || 2 | | | 5v | | | | 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | | | 5v | | | | 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | | | 0v | | | | 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT0 | TxD | 15 | 14 | | | | 0v | | | 9 || 10 | 1 | ALT0 | RxD | 16 | 15 | | 17 | 0 | GPIO. 0 | IN | 0 | 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 | | 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | | | 0v | | | | 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 | | | | 3.3v | | | 17 || 18 | 1 | IN | GPIO. 5 | 5 | 24 | | 10 | 12 | MOSI | ALT0 | 0 | 19 || 20 | | | 0v | | | | 9 | 13 | MISO | ALT0 | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 | | 11 | 14 | SCLK | ALT0 | 0 | 23 || 24 | 1 | OUT | CE0 | 10 | 8 | | | | 0v | | | 25 || 26 | 1 | OUT | CE1 | 11 | 7 | | 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 | | 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | | | 0v | | | | 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 | | 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | | | 0v | | | | 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 | | 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 | | | | 0v | | | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+ == Raspberry Pi GPIO Pin map == +-----+-----+---------+------+---+---Pi 3---+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | | | 3.3v | | | 1 || 2 | | | 5v | | | | 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | | | 5v | | | | 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | | | 0v | | | | 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT5 | TxD | 15 | 14 | | | | 0v | | | 9 || 10 | 1 | ALT5 | RxD | 16 | 15 | | 17 | 0 | GPIO. 0 | IN | 0 | 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 | | 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | | | 0v | | | | 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 | | | | 3.3v | | | 17 || 18 | 0 | IN | GPIO. 5 | 5 | 24 | | 10 | 12 | MOSI | ALT0 | 0 | 19 || 20 | | | 0v | | | | 9 | 13 | MISO | ALT0 | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 | | 11 | 14 | SCLK | ALT0 | 0 | 23 || 24 | 1 | OUT | CE0 | 10 | 8 | | | | 0v | | | 25 || 26 | 1 | OUT | CE1 | 11 | 7 | | 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 | | 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | | | 0v | | | | 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 | | 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | | | 0v | | | | 19 | 24 | GPIO.24 | OUT | 1 | 35 || 36 | 1 | OUT | GPIO.27 | 27 | 16 | | 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 | | | | 0v | | | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+---Pi 3---+---+------+---------+-----+-----+ == Hardware connection == EPD => Raspberry Pi * VCC -> 3.3 * GND -> GND * DIN -> MOSI * CLK -> SCLK * CS -> 24 (Physical, BCM: CE0, 8) * D/C -> 22 (Physical, BCM: 25) * RES -> 11 (Physical, BCM: 17) * BUSY -> 18 (Physical, BCM: 24) == How to use == 1, install the C libraries of bcm2835, see: http://www.airspayce.com/mikem/bcm2835/ 2, change the current directory to where the Makefile and demo files located. 3, compile the file with: make 4, run the demo with: sudo ./epd */ ### 参考github 解决字体大小问题：https://github.com/arturlangner/Waveshare-ePaper-C-library 解决字体采样问题：https://github.com/andryblack/fontbuilder https://github.com/ayoy/font2bytes 大字体原理：https://wavesharejfs.blogspot.com/2018/08/make-new-larger-font-for-waveshare-spi.html