Tiny ML for spark Fun Edge
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本文件介紹了SparkFun Edge板的硬體和軟體開發環境，包括Ambiq Apollo3 SDK的使用，以及如何編譯程序和燒錄固件。提供了關於所需設備、連接方式和操作步驟的詳細說明，以便開發者進行TinyML應用的實驗和測試。使用者需要在Linux或Windows系統中設置工具鏈，並遵循步驟將固件燒錄至板子上。
![產生燒錄檔 & 寫入燒錄檔到板子
Genearte firmware 產生燒錄檔 xxx_wire.bin
====================
[on Linux]
cd apollo3_scripts
#copy xxx.bin to here
cp ../tensorflow/lite/micro/tools/make/gen/sparkfun_edge_cortex-m4/bin/
example1_edge_test.bin .
./build_fw.sh example1_edge_test.bin
==> example1_edge_test_wire.bin](https://image.slidesharecdn.com/1tinymlsparkfun-210530062054/85/Tiny-ML-for-spark-Fun-Edge-12-320.jpg)
![遵循以下步驟
1. 確認 Sparkfun edge board已經連接到 PC (USB-to-Serial 轉板 )
2. 先持續按著Button 14, 再按 button RST (進入燒錄模式)
3. 接著在[Anaconda Prompt ],
要切換到 apollo3_scripts 目錄, 輸入下列指令
python uart_wired_update.py COM14 -f example1_edge_test_wire.bin
在windows上燒錄bin檔到edge board
*須先安裝pyserial 套件
pip install pyserial
COM14 不能被其他程式佔用!!
COM14 is your COM PORT NUMBER](https://image.slidesharecdn.com/1tinymlsparkfun-210530062054/85/Tiny-ML-for-spark-Fun-Edge-15-320.jpg)
![You can use TeraTerm or putty
Display the output message from Edge board
[Setup->Serial Port ]
baud rate: 115200 bps, 8 N 1](https://image.slidesharecdn.com/1tinymlsparkfun-210530062054/85/Tiny-ML-for-spark-Fun-Edge-17-320.jpg)
Tiny ML for spark Fun Edge
- 1. TinyML for SparkFun Edge May 15, 2020
- 2. • Sparkfun Edge board 介紹 • 準備好軟體開發環境 • 關於Ambiq Apollo3 SDK • 編譯程式、產生韌體燒錄檔 • 將燒錄檔寫入至 Sparkfun Edge board • 連接終端機 Outline
- 3. About Sparkfun Edge board Sparkfun Edge board x1 Sparkfun USB-to-Serial Adapter x1 (CH340E chip) microUSB wire x1 Himax CMOS Imaging Camera - HM01B0 x1
- 4. MCU (Apollo3 Blue) • 32-bit ARM Cortex-M4F • 48MHz CPU clock, 96MHz with TurboSPOT™ • 1MB Flash • 384KB SRAM • Extremely low-power usage: 6uA/MHz Sensor • two microphones • 3-axis accelerometer • camera connector Connections • Serial UART • Qwiic connector (need Qwiic cables ) • Bluetooth Radio • four LEDs and four GPIO connections • JTAG Connector Sparkfun Edge board https://learn.sparkfun.com/tutorials/sparkfun-edge-hookup- guide?_ga=2.52218401.900382962.1598838491- 96125856.1586318981#hardware-overview
- 5. Block Diagram of Apollo3 Blue MCU
- 6. Reset Button UART connector GPIO Button MICx2 Qwiic connector GPIO connections x4 Bluetooth Radio LED x4 Camera connector JTAG Connector Accelerometer MCU
- 7. Linux 系統 • 目的: Building the firmware for Sparkfun Edge Board • OS: Ubuntu 18.04 **可參考本文章 ” Virtual Box建置Linux主機” https://bit.ly/2RE0hK8 Windows 系統 • 目的: Training the Tensor flow model • 所需軟體: • Anaconda https://www.anaconda.com • Python 3.7 and TensorFlow 2.0 • MobaXterm https://mobaxterm.mobatek.net/ • Serial to USB driver (CH340) 準備好軟體開發環境
- 8. Using SparkFun Edge Board with Ambiq Apollo3 SDK
- 9. Layout of Ambiq Apollo3 SDK
- 10. BSP Layout of SparkFun_Edge
- 11. Setup Toolchain & build project # Setup Toolchain ===================== export PATH=~/tinyML/tensorflow/lite/micro/tools/make/downloads/gcc_embedded/bin:$PATH 可以將此行加入到 ~/.bashrc內 #Build the Frist Example for test ============== example1_edge_test/ ├── gcc │ ├── bin │ ├── edge_test.ld │ ├── Makefile │ └── startup_gcc.c ├── Makefile └── src ├── main.c ├── tf_accelerometer └── tf_adc >> cd SparkFun_Edge_SDK/AmbiqSuite- Rel2.2.0/boards/SparkFun_Edge_BSP- master/examples/example1_edge_test/gcc >> make ==> it will output bin/example1_edge_test.bin
- 12. 產生燒錄檔 & 寫入燒錄檔到板子 Genearte firmware 產生燒錄檔 xxx_wire.bin ==================== [on Linux] cd apollo3_scripts #copy xxx.bin to here cp ../tensorflow/lite/micro/tools/make/gen/sparkfun_edge_cortex-m4/bin/ example1_edge_test.bin . ./build_fw.sh example1_edge_test.bin ==> example1_edge_test_wire.bin
- 13. Screenshot after ./build_fw.sh 將 binary 加上 header signed binary 再將signed binary 加入燒錄資訊
- 14. 1.) 先將Sparkfun 透過 USB 線連接 PC 2.) 再檢查所有USB-to-Serial裝置 • Linux : 在終端機輸入 ls /dev/ttyUSB0 • MacOS : 輸入 ls /dev/cu.usbserial* • Windows : 在裝置管理員檢查COM (此處為COM14) 燒入前檢查 Windows 須先安裝CH340 Driver
- 15. 遵循以下步驟 1. 確認 Sparkfun edge board已經連接到 PC (USB-to-Serial 轉板 ) 2. 先持續按著Button 14, 再按 button RST (進入燒錄模式) 3. 接著在[Anaconda Prompt ], 要切換到 apollo3_scripts 目錄, 輸入下列指令 python uart_wired_update.py COM14 -f example1_edge_test_wire.bin 在windows上燒錄bin檔到edge board *須先安裝pyserial 套件 pip install pyserial COM14 不能被其他程式佔用!! COM14 is your COM PORT NUMBER
- 17. You can use TeraTerm or putty Display the output message from Edge board [Setup->Serial Port ] baud rate: 115200 bps, 8 N 1
- 18. Code Architecture • UART printing for info/debugging • ADC operation to sample from a microphone • I2C operation to control the accelerometer • GPIO functions (an output that can drive up to 12 mA) "hal/am_hal_adc.h" "hal/am_hal_gpio.h" "hal/am_hal_uart.h" mcu/apollo3/am_mcu_apollo.h …………… MCU pin Board (Sparkfun Edge) ./boards/SparkFun_Edge_BSP- master/bsp/am_bsp_pins.h Application MCU register R/W Hardware Abstraction Layer (HAL)
- 19. Code Study