16 Bit Paralell + SoftwareSerial crashing on rp2040 / pico

[pwd666]

I've got the following setup on a RP2040 / Raspberry Pie Pico. It works when I only initialize the tft_eSPI library but doesn't work when I also initialize SoftwareSerial.:

#define USER_SETUP_INFO "User_Setup" #define TFT_PARALLEL_16_BIT #define ILI9486_DRIVER #define TFT_CS 18 // Chip select control pin (library pulls permanently low #define TFT_DC 19 // Data Command control pin - must use a pin in the range 0-31 #define TFT_RST 20 // Reset pin, toggles on startup #define TFT_WR 21 // Write strobe control pin - must use a pin in the range 0-31 #define TFT_D0 0 // Must use pins in the range 0-31 for the data bus #define TFT_D1 1 // so a single register write sets/clears all bits. #define TFT_D2 2 // Pins can be randomly assigned, this does not affect #define TFT_D3 3 // TFT screen update performance. #define TFT_D4 4 #define TFT_D5 5 #define TFT_D6 6 #define TFT_D7 7 #define TFT_D8 8 // Must use pins in the range 0-31 for the data bus #define TFT_D9 9 // so a single register write sets/clears all bits. #define TFT_D10 10 // Pins can be randomly assigned, this does not affect #define TFT_D11 11 // TFT screen update performance. #define TFT_D12 12 #define TFT_D13 13 #define TFT_D14 14 #define TFT_D15 15 #define SMOOTH_FONT #define LOAD_GFXFF // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts

Output of Read_User_seup is:

20:14:39.239 -> [code]
20:14:39.239 -> TFT_eSPI ver = 2.5.0
20:14:39.239 -> Processor = RP2040
20:14:39.239 -> Transactions = Yes
20:14:39.239 -> Interface = Parallel
20:14:39.239 -> Display driver = 9486
20:14:39.239 -> Display width = 320
20:14:39.239 -> Display height = 480
20:14:39.239 ->
20:14:39.239 -> TFT_CS = GPIO 18
20:14:39.239 -> TFT_DC = GPIO 19
20:14:39.239 -> TFT_RST = GPIO 20
20:14:39.239 -> TFT_WR = GPIO 21
20:14:39.239 ->
20:14:39.239 -> TFT_D0 = GPIO 0
20:14:39.239 -> TFT_D1 = GPIO 1
20:14:39.239 -> TFT_D2 = GPIO 2
20:14:39.239 -> TFT_D3 = GPIO 3
20:14:39.239 -> TFT_D4 = GPIO 4
20:14:39.239 -> TFT_D5 = GPIO 5
20:14:39.239 -> TFT_D6 = GPIO 6
20:14:39.239 -> TFT_D7 = GPIO 7
20:14:39.239 ->
20:14:39.239 -> TFT_BL = GPIO 22
20:14:39.239 -> TFT_BACKLIGHT_ON = HIGH
20:14:39.239 ->
20:14:39.239 -> Font GLCD loaded
20:14:39.239 -> Smooth font enabled
20:14:39.239 ->
20:14:39.239 -> [/code]

The basic code I have looks like this (Arduino IDE):

#include <TFT_eSPI.h> // Hardware-specific library
#include "Free_Fonts.h" // Include the header file attached to this sketch
TFT_eSPI tft = TFT_eSPI(); // Invoke custom library with default width and height
#include "SoftwareSerial.h"
SoftwareSerial vesc_serial(17 , 16); // RX, TX
void setup() {
Serial.begin(115200) // for usb to serial debug
vesc_serial.begin(19200);
Serial.println("Loaded vesc_serial");
tft.begin(); ///<--- This is breaking thingsss ?
tft.setRotation(1);
Serial.println("end of setup");
}

void loop() {
delay(5000);
Serial.println("Free: ");
Serial.print(rp2040.getFreeHeap());
}


The Pico seems to crash at runtime when I include both vesc_serial.begin(19200); and tft.begin();. Having only tft.begin(); works and having only vesc_serial.begin(19200); works. There must be a clash somewhere with those two libraries, Does anyone have any ideas?

[Bodmer]

I have updated the master to resolve this.

[pwd666]

Excellent, thank you! FYI It appears lines 193 and 195 TFT_eSPI_RP2040.c are missing a ")".

[Bodmer]

Yep, thanks for spotting that. Now fixed.