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Recent content by joseMiguel

  1. J

    advice of a good book for starting to know Electronic Design from basics to advanced

    Hello, I am looking for a good book for starting to know Electronic Design from basics to advanced Analog and Digital Could you post me some reference. It is for a beginner Thank you in advance Jose Miguel
  2. J

    esp32 and (MFRC522 or RC522) and micropython

    Hello, I want to realize an access control via contactless cards. For that a use a ESP32 devkitC(38 pins), SPI interface and MFRC522. (I use Thonny Python IDE) i tried different software found on gitHub : 1) The first https://github.com/Lennyz1988/micropython-mfrc522/blob/master/mfrc522.py It...
  3. J

    Does the Micropython code of BlueTooth ESP32 exist???

    Hello everybody, Does the Micropython code of BlueTooth ESP32 exist??? I have already found the Wifi MicroPython code for ESP32 (TechTo Tinker on Youtube) Thank you in advance Jose Miguel
  4. J

    ESP 32 Tensilica’s Xtensa C/C++ compiler

    Hello everybody, I requested a trial version of the Tensilica’s Xtensa C/C++ compiler from Cadence named XCC. Does a free gnu gcc/g++ compiler exists which compile LX6 processor from Tensilica as a target? I want tu use Xtensa Xplorer IDE based on familiar Eclipse platform if it is possible...
  5. J

    ESP32-A1S from Ai-Thinker

    Hello, I want to make an headset with an ESP32XXXX (BLT and BLE). For the moment, i have just bought an ESP-A1S development board from Ai-Thinker. This board have an ESP32 and a AC101 codec from x-powers encapsulated into a metalic shield. I don't succeed to have support x-powers. I want to...
  6. J

    [SOLVED] problem simulating a simple counter in VHDL with Vivado

    Hi, Thank you so much, as i am a big beginner with Vivado, i forget to specify that the testbebch is the top level design. Now i have the right functionnal simulation. regards jose Miguel (now i need to learn about constraints)
  7. J

    [SOLVED] problem simulating a simple counter in VHDL with Vivado

    hi guys, here below the counter library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; entity count16 is port( CLK, nRESET, LOAD : in std_logic; D : in std_logic_vector(3 downto 0); Q : out std_logic_vector(3 downto 0)); end count16; architecture archcount16 of count16 is...
  8. J

    buy a development board to learn vhdl and verilog on a target CPLD or small FPGA

    Hi guys, I would like to buy a development board to learn VHDL and Verilog, on a small target CPLD or FPGA. Could you advice to me a developement board based on Xilinx or Altera even Lattice chip. my budget is around 50€. I already have bought microcontroller based board on ebay. but as i am...
  9. J

    Help me explaining the 4 wires impedance measurement

    Hello, Could anybody help me explaining the 4wires impedance measurement. 1) The resistor measurement is quite easy. putting a DC current inside the resistor and measurind the voltage . (instrumentation amplifier and voltage converter) 2) ??? for a impedance, putting I sqqrt(2) sin(wt) in...
  10. J

    [SOLVED] problem porting serial.begin(9600) from Arduino IDE to Windows AVR Visual Studio 6.0

    Hi all, My error was stupid, I created a ".c" project and not a ".cpp" project. So, it was for this reason that the compiler was unable to compile the new prototype. Thank you. Jose Miguel.
  11. J

    [SOLVED] problem porting serial.begin(9600) from Arduino IDE to Windows AVR Visual Studio 6.0

    Hi Alexan_e, In fact i am a beginner with ATMEL Visual Studio and Arduino IDE. I don't know the already existing libraries on AVR Studio. My first look at this was that it seems not easy and it does not have so many job done than in the Arduino IDE. The other reason to port the Arduino...
  12. J

    [SOLVED] problem porting serial.begin(9600) from Arduino IDE to Windows AVR Visual Studio 6.0

    Hi, I am building a project on AVR Visual Studio 6.0 using all the macros, functions and methods from the Arduino IDE. (I am starting this port stuff) When i use Serial.begin(9600) i must include the "Hardware_Serial.h", the "stream.h", the "Print.h", the "WString.h" and the "Printable.h"...
  13. J

    Porting a simple sketch (Blink a diode) from Arduino IDE to AVR studio on Windows

    Hi, The solution is quite easy. I the AVR Studio 6.0 put those files in the src directory: wiring_digital.c in the include directory:wiring_private.h, pins_arduino.h and Arduino.h Thank you Jose Miguel
  14. J

    Porting a simple sketch (Blink a diode) from Arduino IDE to AVR studio on Windows

    Hi, I don't find the library where the digitalWrite(led, HIGH) is defined. I have only find the declaration of the prototype in Arduino.h. I would like to make the software migration from the Arduino IDE (sketch) to AVR studio 6.0 Could you please help me. Thank you. José Miguel.
  15. J

    I wish to learn how to develop a simple USB peripheral of HID type

    Hi, In this web site, lot of people did it with a PIC181F4550 (demo bord). the SW is given (stack and a HID SW) regards Jose Miguel
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