#ARDUINO MEGA 2560 CS PIN CODE#

I gave him the task of making the connector and identify the wire with tape, but I didn't doublecheck it.

#ARDUINO MEGA 2560 CS PIN CODE#

We split tasks I give him more 'manual' stuff, and I work on the code and design. And while doping this project, I am teaching electronics to a mate. No wonder it didn't work! A little context here I have not done electronics since I have left college, 5 years ago. In doing so, I realized that my MOSI was wired to the ground of the module and the ground to the MOSI pin. When I saw that, I went ahead and started to measure voltages (I have just watched a couple of Dave's video recently, and he says 'thou shall check voltages'). Data pins seem to be assigned along the lines of pins 22-29 but the order is not clear regarding assignment. I tried what you told me, and tweaked my oscilloscope to get better results for the picture, and while doing boosting the intensity of my faded out CRT, I saw a bunch of noise on the CS, MOSI and MISO pins on the board that I couldn't see before due to the faint image. As a relative newcomer to programming and using libraries, I am repeated stumped in trying to understand the purpose of pin assignment when attaching a 3.2' LCD TFT to the Mega 2560 board. Do these HIGH/LOWs show on your oscilloscope - both on the pin and on the ICSP header? Detach your SD reader and try the following code that will just toggle pins 50-53 HIGH and LOW every 100ms. 50 - MISO - Green - Channel 0 51 - MOSI - White - Channel 1 52 - CLOCK - Yellow - Channel 2 53 - ENABLE - Blue - Channel 3 ICSP1 - Pin1 - MISO1 - Green - Channel 4 ICSP1 - Pin5 - MOSI1 - White - Channel 5 I appreciate this is a 'It works on my machine' but the Logic Analyzer shows the same data when connected to MOSI1 and MISO1 pins (middle of the board) It shows nothing when I connect to the MOSI2 and MISO2 pins which are on the second ICSP2 header by the Digital 13 pin.

But the Arduino Mega has only pin 53 as spi. I've read this article: Article and it's telling me I need to use two different spi-pins to communicate between my rfid shield and my sd-card shield. Now both devices use the same spi pin (53). Quote from: Avacee on March 27, 2017, 10:34:03 pm And you are definitely using the ICSP1 header in the middle of the board between the chip and reset button? I have the same micro-SD Card Reader so knocked it up on the breadboard with the Logic Analyzer - See photos The Logic Analyzer shows the start of the SPI communication from SD.begin(). Input Voltage: 3.3V/5V With all SD SPI Pins out :MOSI, SCK, MISO and CS ,for further connection Through programming, you can read and write to the SD card. Now I want to combine it with a rfid-sensor chip like this one: rfid-shield.

Arduino mega 2560 cs pin