This program demonstrates the possibility of using the SKU:MAR2406 to display some information from the Raspberry PI Pico RP2040.
Not yet tested:
-The tactile screen
-The micro SDCard reader
The Raspberry PI Pico C/C++ SDK:
https://datasheets.raspberrypi.org/pico/raspberry-pi-pico-c-sdk.pdf
https://github.com/raspberrypi/pico-sdk
The SKU:MAR2406:
http://www.lcdwiki.com/2.4inch_Arduino_Display for technical information, because this demo is adapted for the RP2040.
https://cdn-shop.adafruit.com/datasheets/ILI9341.pdf the data sheet of the ILI9341 (the screen)
sudo minicom -b 115200 -o -D /dev/ttyACM0| Pin | Label | Description |
|---|---|---|
| 40 | VBUS | USB input voltage, typically 5V |
| 39 | VSYS | System power, between 1,8V and 5.5V |
| 38 | 3V3 | 3,3V |
If you experience some connection problem, verify that your Raspberry Pi Pico is connected directly to your Raspberry Pi, not the breadboard.
| Raspberry Pi | Raspberry Pi Pico |
|---|---|
| GND (pin 20) | SWD GND |
| GPIO 24 (pin 18) | SWDIO |
| GPIO 25 (pin 22) | SWCLK |
| Raspberry Pi | Raspberry Pi Pico |
|---|---|
| TxD UART (pin 8) | UART0 RX (pin 2) |
| RxD UART (pin 10) | UART0 TX (pin 1) |
| GND (pin 12) | GND (pin 3) |
| ILI9341 | SKU:MAR2406 | Description |
|---|---|---|
| RESX | LCD_RST | reset |
| CSX | LCD_CS | chip select |
| D/CX | LCD_RS | command/status |
| WRX | LCD_WR | write |
| RDX | LCD_RD | read |
| SKU:MAR2406 | GPIO on the RP2040 | PIN |
|---|---|---|
| LCD_RST | 17 | 22 |
| LCD_CS | 18 | 24 |
| LCD_RS | 19 | 25 |
| LCD_WR | 20 | 26 |
| LCD_RD | 21 | 27 |
| GND | GND | |
| 5V | VBUS | |
| 3V3 | VSYS | |
| LCD_D0 | 2 | 4 |
| LCD_D1 | 3 | 5 |
| LCD_D2 | 4 | 6 |
| LCD_D3 | 5 | 7 |
| LCD_D4 | 6 | 9 |
| LCD_D5 | 7 | 10 |
| LCD_D6 | 8 | 11 |
| LCD_D7 | 9 | 12 |
The characters matrix come from a Commodore 64. Every char is a matrix of 8 x 8 bits.
I am inviting you to consult the file c64charset for more information.
| Char | ASCII | Offset |
|---|---|---|
| SPC | 32 | 256 |
| ! | 33 | 264 |
| ... | ... | ... |
| ? | 63 | 504 |
| @ | 64 | 0 |
| A | 65 | 8 |
| B | 66 | 16 |
| ... | ... | ... |
| Z | 90 | 208 |
| [ | 91 | 216 |
| \ | 92 | (1)224 |
| ] | 93 | 232 |
| ^ | 94 | (2)240 |
| _ | 95 | (3)248 |
| ` | 96 | (4)256 |
| a | 97 | 2056 |
| ... | ... | ... |
| z | 122 | 2256 |
Graphic char from offset 512 until 1016 include
1 sterling sign
2 up arrow sign
3 left arrow sign
4 SPC