Preface A current sensing resistor (shunt resistor) is usually placed on one of the three-phase lines. The voltage drop across this resistor can be amplified by an operational amplifier (op-amp), and then received by a sensor and converted into a digital signal. In this way, we can detect the current of the motor in the […]
Shunt resistor based current sensing design Read More »
Introduction The VL53L5CX system consists of a hardware module and an ULD software (VL53L5CX ULD) running on the host. The hardware module contains a Time-of-Flight (ToF) sensor. ST provides a software driver, referred to as the “driver” in this document, which describes the functions of the driver that the host can access. These functions control
ST TOF Sesonr-VL53L5(Turnkey gesture) Read More »
RTC introduce Real-Time Clock (RTC) is an independent BCD timer/counter that provides a calendar clock/calendar with programmable alarm interrupt function. The RTC also includes a periodic programmable wake-up flag with interrupt function. Two 32-bit registers contain the seconds, minutes, hours (12 or 24-hour format), day of the week, date, month, and year in Binary-Coded Decimal
STM32 RTC_Calendar(G0 Series) Read More »
前言 這邊是透過HaHow學院”Python小資族選股策略”課程彙整出精化資訊，有需要同仁可以透過左邊連結直接購買課程詳細閱讀。 本章節會介紹如何使用python爬蟲下載台股標的，並加工塞選出自己所需股票組合。這邊因台灣還未有免費且完善系統，因此這邊會由一個新手角度帶入，對於台股技術分析等這邊暫時不細部著墨，投資有賺有賠請選擇自己對應能承擔風險之標的，切勿all in避免家破人亡 使用IDE Python：Anaconda 環境配置 Anaconda是一個免費開源的 Python 發行版本，同時也內建了許多進行資料科學(data science)研究時常用的工具。➃ 講了這麼多，其實我也不是聽得很懂到底是什麼意思，只知道免費開源這四個關鍵字。因此第一步，先去 Anaconda 官網下載符合目前電腦的安裝檔。記得要選對安裝檔啊。不知道為什麼，我用的是 windows，但每次點進去，預設的載點都是 macOS 的安裝檔。 獲取財報資訊 首先我們要先看一下財報的網址： http://mops.twse.com.tw/server-java/t164sb01?step=1&CO_ID=1101&SYEAR=2017&SSEASON=3&REPORT_ID=C 在這一串網址中，有幾個重要的元素： 參考
Taiwan Stock Selective by Python-1 Read More »
Preface In this article, we will explain how to use the CDC (Communication Device Class) in USB to create a virtual COM port (VCP) for communication. On the one hand, for the host computer, it appears as a serial port, and all operations are still based on serial port operations. On the other hand, the
STM32 USB_Device(CDC_Standalone) Read More »
Preface Currently, ST has two sets of USB drivers. One is the early independent version USB driver, referred to as the Legacy library in official training materials. The other is the driver for its Cube series, which may vary depending on the chip used. Please refer to the corresponding Cube driver package for the specific
STM32 USB_Device(DFU_Standalone) Read More »
Preface In STM32, some newer MCU models are equipped with LPTIM timers. For example, high-performance MCUs such as STM32F7 and H7, low-power MCUs such as STM32L0 and L4, as well as the newly released G0 and G4 series, all have this type of LPTIM timer. You can download the corresponding datasheet to see which MCUs
STM32WB LPTIM counter(Timing) API Read More »
IWDG Function In the previous chapter, it was mentioned that standby mode can be woken up through IWDG. The functional block diagram of the Independent Watchdog (IWDG) is shown below. In fact, the IWDG is a decrementing counter. When the value of the counter is reduced to zero, IWDG generates a reset signal, and the
STM32WB IWDG Function Introduction Read More »
Preface When using the ST FOC motor control library with Hall signals as the position feedback, synchronous electrical angle data must be input based on the characteristics of the motor being used. This data synchronizes the electrical angle with the Hall signal at each signal change. If the angle deviation is large, it may affect
ST Motor Control Adjust Method-1 Read More »
Preface We were operating the SPI, but strange phenomena occurred when the SPI speed exceeded 10MHz and the CPOL/CPHA became mismatched. After researching various methods, we found the trick was in the GPIO settings. Here, we provide detailed instructions for setting the GPIO SPEED SETTING to avoid such issues, which is applicable not only to
GPIO Setting for Different Speed Read More »
