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Added description for 1SPI

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Torsten Stauder 5 years ago
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      README.md

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@ -34,7 +34,7 @@ I recommend Microsoft's [Visual Studio Code](https://code.visualstudio.com/) alo
In the upper section of main.cpp you can specify the modules that should be compiled into the code. In the upper section of main.cpp you can specify the modules that should be compiled into the code.
Please note: if MQTT is enabled it's still possible to deactivate it via webgui. Please note: if MQTT is enabled it's still possible to deactivate it via webgui.
## Wiring
## Wiring (2 SPI-instances)
A lot of wiring is necessary to get ESP32-Tonuino working. After my first experients I soldered the stuff on a board in order to avoid wild-west-cabling. Especially for the interconnect between uC and uSD-card-reader make sure to use short wires (like 10cm or so)! A lot of wiring is necessary to get ESP32-Tonuino working. After my first experients I soldered the stuff on a board in order to avoid wild-west-cabling. Especially for the interconnect between uC and uSD-card-reader make sure to use short wires (like 10cm or so)!
| ESP32 (GPIO) | Hardware | Pin | Comment | | ESP32 (GPIO) | Hardware | Pin | Comment |
@ -75,6 +75,42 @@ A lot of wiring is necessary to get ESP32-Tonuino working. After my first experi
Optionally, GPIO 17 can be used to drive a NPN-transistor (BC337-40) that pulls a p-channel MOSFET (IRF9520) to GND in order to switch on/off 5V-current. Transistor-circuit is described [here](https://dl6gl.de/schalten-mit-transistoren.html): Just have a look at Abb. 4. Values of the resistors I used: R1: 10k, R2: omitted(!), R4: 10k, R5: 4,7k Optionally, GPIO 17 can be used to drive a NPN-transistor (BC337-40) that pulls a p-channel MOSFET (IRF9520) to GND in order to switch on/off 5V-current. Transistor-circuit is described [here](https://dl6gl.de/schalten-mit-transistoren.html): Just have a look at Abb. 4. Values of the resistors I used: R1: 10k, R2: omitted(!), R4: 10k, R5: 4,7k
## Wiring (1 SPI-instance)
In this case RFID-reader + SD-reader share SPI's SCK, MISO and MOSI. But make sure to use different CS-pins.
| ESP32 (GPIO) | Hardware | Pin | Comment |
| ------------- | --------------------- | ------ | ------------------------------------------------------------ |
| 5 V | SD-reader | VCC | Connect to p-channel MOSFET for power-saving when uC is off |
| GND | SD-reader | GND | |
| 15 | SD-reader | CS | Don't share with RFID! |
| 17 | RFID-reader | 3.3V | Connect directly to GPIO 17 for power-saving when uC is off |
| GND | RFID-reader | GND | |
| 22 | RFID-reader | RST | |
| 21 | RFID-reader | CS/SDA | Don't share with SD! |
| 23 | RFID+SD-reader | MOSI | |
| 19 | RFID+SD-reader | MISO | |
| 18 | RFID+SD-reader | SCK | |
| 5 V | MAX98357 | VIN | Connect to p-channel MOSFET for power-saving when uC is off |
| GND | MAX98357 | GND | |
| 25 | MAX98357 | DIN | |
| 27 | MAX98357 | BCLK | |
| 26 | MAX98357 | LRC | |
| 34 | Rotary encoder | CLR | Invert CLR with DT if you want to change the direction of RT |
| 35 | Rotary encoder | DT | Invert CLR with DT if you want to change the direction of RT |
| 32 | Rotary encoder | BUTTON | |
| 3.3 V | Rotary encoder | + | |
| GND | Rotary encoder | GND | |
| 4 | Button (next) | | |
| GND | Button (next) | | |
| 33 | Button (previous) | | |
| GND | Button (previous) | | |
| 5 | Button (pause/play) | | |
| GND | Button (pause/play) | | |
| 5 V | Neopixel | 5 V | Connect to p-channel MOSFET for power-saving when uC is off |
| GND | Neopixel | GND | |
| 12 | Neopixel | DI | Might be necessary to use a logic-converter 3.3 => 5V |
| 17 | (e.g.) BC337 (via R5) | Base | Don't forget R5! |
## Prerequisites ## Prerequisites
* choose if optional modules (MQTT, FTP, Neopixel) should be compiled/enabled * choose if optional modules (MQTT, FTP, Neopixel) should be compiled/enabled
* for debugging-purposes serialDebug can be set to ERROR, NOTICE, INFO or DEBUG. * for debugging-purposes serialDebug can be set to ERROR, NOTICE, INFO or DEBUG.

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