对于我的学校作业，提供了 TTGO LoRa32 SX1276 OLED 板的代码。当我在 platformIO 上安装必要的库和开发板并运行代码时，开发板上的屏幕保持黑色。当我打开串行监视器时，出现错误（见下文）。
我使用“ttgo-lora32-v21”的主板的 Platform.ini 文件如下所示。我还使用“ttgo-lora32-v1”创建了另一个项目，两者都给出了相同的结果。
错误：
ELF file SHA256: 0000000000000000
Rebooting...
ets Jul 29 2019 12:21:46
rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13132
load:0x40080400,len:3036
entry 0x400805e4
assert failed: do_core_init startup.c:298 (flash_ret == ESP_OK)
Backtrace:0x400837b9:0x3ffe3aa00x40088135:0x3ffe3ac0 0x4008cff9:0x3ffe3ae0 0x400dd3fe:0x3ffe3c10 0x40082ed5:0x3ffe3c40 0x400792ba:0x3ffe3c90 |<-CORRUPTED
平台.ini：
[env:ttgo-lora32-v21]
platform = espressif32
board = ttgo-lora32-v21
framework = arduino
lib_deps =
sandeepmistry/LoRa@^0.8.0
adafruit/Adafruit GFX Library@^1.11.8
adafruit/Adafruit SSD1306@^2.5.7
代码：
//Libraries for LoRa
#include <SPI.h>
#include <LoRa.h>
//Libraries for OLED Display
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
//define the pins used by the LoRa transceiver module
#define SCK 5
#define MISO 19
#define MOSI 27
#define SS 18
#define RST 14
#define DIO0 26
//433E6 for Asia
//866E6 for Europe
//915E6 for North America
#define BAND 866E6
//OLED pins
#define OLED_SDA 4
#define OLED_SCL 15
#define OLED_RST 16
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RST);
String LoRaData;
void setup() {
//reset OLED display via software
pinMode(OLED_RST, OUTPUT);
digitalWrite(OLED_RST, LOW);
delay(20);
digitalWrite(OLED_RST, HIGH);
//initialize OLED
Wire.begin(OLED_SDA, OLED_SCL);
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3c, false, false)) { // Address 0x3C for 128x32
Serial.println(F("SSD1306 allocation failed"));
for(;;); // Don't proceed, loop forever
}
display.clearDisplay();
display.setTextColor(WHITE);
display.setTextSize(1);
display.setCursor(0,0);
display.print("LORA RECEIVER ");
display.display();
//initialize Serial Monitor
Serial.begin(115200);
Serial.println("LoRa Receiver Test");
//SPI LoRa pins
SPI.begin(SCK, MISO, MOSI, SS);
//setup LoRa transceiver module
LoRa.setPins(SS, RST, DIO0);
if (!LoRa.begin(BAND)) {
Serial.println("Starting LoRa failed!");
while (1);
}
Serial.println("LoRa Initializing OK!");
display.setCursor(0,10);
display.println("LoRa Initializing OK!");
display.display();
}
void loop() {
//try to parse packet
int packetSize = LoRa.parsePacket();
if (packetSize) {
//received a packet
Serial.print("Received packet ");
//read packet
while (LoRa.available()) {
LoRaData = LoRa.readString();
Serial.print(LoRaData);
}
//print RSSI of packet
int rssi = LoRa.packetRssi();
Serial.print(" with RSSI ");
Serial.println(rssi);
// Dsiplay information
display.clearDisplay();
display.setCursor(0,0);
display.print("LORA RECEIVER");
display.setCursor(0,20);
display.print("Received packet:");
display.setCursor(0,30);
display.print(LoRaData);
display.setCursor(0,40);
display.print("RSSI:");
display.setCursor(30,40);
display.print(rssi);
display.display();
}
}
我尝试使用不同的板创建新的 platformIO 项目。
v2
[env:ttgo-lora32-v21]
platform = espressif32
board = ttgo-lora32-v21
framework = arduino
lib_deps =
sandeepmistry/LoRa@^0.8.0
adafruit/Adafruit GFX Library@^1.11.8
adafruit/Adafruit SSD1306@^2.5.7
v1
[env:ttgo-lora32-v1]
platform = espressif32
board = ttgo-lora32-v1
framework = arduino
lib_deps =
sandeepmistry/LoRa@^0.8.0
adafruit/Adafruit GFX Library@^1.11.8
adafruit/Adafruit SSD1306@^2.5.7
esp32 回溯特别不透明。您需要安装ESP异常解码器以使内容更具可读性。安装后，将错误文本复制到解码器。它会告诉你出了什么问题。这应该有帮助。
我遇到了类似的事情......，我尝试为我的 ST7789 运行一些 youtube 视频（https://simple- Circuit.com/esp8266-nodemcu-st7789-tft-ips-display/）中给出的示例代码SPI IPS 240x240 显示，但 platformIO 由于某种原因无法识别标准功能，例如：
Processing esp12e (platform: espressif8266; board: esp12e; framework: arduino)
-----------------------------------------------------------------------------------------------------------
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/espressif8266/esp12e.html
PLATFORM: Espressif 8266 (4.2.1) > Espressif ESP8266 ESP-12E
HARDWARE: ESP8266 80MHz, 80KB RAM, 4MB Flash
PACKAGES:
- framework-arduinoespressif8266 @ 3.30102.0 (3.1.2)
- tool-esptool @ 1.413.0 (4.13)
- tool-esptoolpy @ 1.30000.201119 (3.0.0)
- toolchain-xtensa @ 2.100300.220621 (10.3.0)
LDF: Library Dependency Finder ->
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 42 compatible libraries
Scanning dependencies...
Dependency Graph
|-- MPU6050 @ 1.2.0
|-- Adafruit GFX Library @ 1.11.9
|-- Adafruit ST7735 and ST7789 Library @ 1.10.3
|-- Adafruit BusIO @ 1.14.5
Building in release mode
Compiling .pio\build\esp12e\src\main.cpp.o
src\main.cpp: In function 'void setup()':
src\main.cpp:42:3: error: 'tftPrintTest' was not declared in this scope
42 | tftPrintTest();
| ^~~~~~~~~~~~
src\main.cpp:50:3: error: 'testlines' was not declared in this scope
50 | testlines(ST77XX_YELLOW);
| ^~~~~~~~~
src\main.cpp:54:3: error: 'testfastlines' was not declared in this scope
54 | testfastlines(ST77XX_RED, ST77XX_BLUE);
| ^~~~~~~~~~~~~
src\main.cpp:57:3: error: 'testdrawrects' was not declared in this scope
57 | testdrawrects(ST77XX_GREEN);
| ^~~~~~~~~~~~~
src\main.cpp:60:3: error: 'testfillrects' was not declared in this scope
60 | testfillrects(ST77XX_YELLOW, ST77XX_MAGENTA);
| ^~~~~~~~~~~~~
src\main.cpp:64:3: error: 'testfillcircles' was not declared in this scope
64 | testfillcircles(10, ST77XX_BLUE);
| ^~~~~~~~~~~~~~~
src\main.cpp:65:3: error: 'testdrawcircles' was not declared in this scope
65 | testdrawcircles(10, ST77XX_WHITE);
| ^~~~~~~~~~~~~~~
src\main.cpp:68:3: error: 'testroundrects' was not declared in this scope
68 | testroundrects();
| ^~~~~~~~~~~~~~
src\main.cpp:71:3: error: 'testtriangles' was not declared in this scope
71 | testtriangles();
| ^~~~~~~~~~~~~
src\main.cpp:74:3: error: 'mediabuttons' was not declared in this scope
74 | mediabuttons();
| ^~~~~~~~~~~~
Compiling .pio\build\esp12e\FrameworkArduino\StreamSend.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\Tone.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\TypeConversion.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\Updater.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\WMath.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\WString.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\abi.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\aes_unwrap.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\base64.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\cbuf.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\cont.S.o
Compiling .pio\build\esp12e\FrameworkArduino\cont_util.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\core_esp8266_app_entry_noextra4k.cpp.o
Compiling .pio\build\esp12e\FrameworkArduino\core_esp8266_eboot_command.cpp.o
*** [.pio\build\esp12e\src\main.cpp.o] Error 1
Compiling .pio\build\esp12e\FrameworkArduino\core_esp8266_features.cpp.o
======================================= [FAILED] Took 12.29 seconds =======================================
我的代码：
#include <Arduino.h>
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
// ST7789 TFT module connections
#define TFT_DC D1 // TFT DC pin is connected to NodeMCU pin D1 (GPIO5)
#define TFT_RST D2 // TFT RST pin is connected to NodeMCU pin D2 (GPIO4)
#define TFT_CS D8 // TFT CS pin is connected to NodeMCU pin D8 (GPIO15)
// initialize ST7789 TFT library with hardware SPI module
// SCK (CLK) ---> NodeMCU pin D5 (GPIO14)
// MOSI(DIN) ---> NodeMCU pin D7 (GPIO13)
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
float p = 3.1415926;
void setup(void) {
Serial.begin(9600);
Serial.print(F("Hello! ST77xx TFT Test"));
// if the display has CS pin try with SPI_MODE0
tft.init(240, 240, SPI_MODE2); // Init ST7789 display 240x240 pixel
// if the screen is flipped, remove this command
tft.setRotation(2);
Serial.println(F("Initialized"));
uint16_t time = millis();
tft.fillScreen(ST77XX_BLACK);
time = millis() - time;
Serial.println(time, DEC);
delay(500);
// large block of text
tft.fillScreen(ST77XX_BLACK);
//testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST77XX_WHITE);
delay(1000);
// tft print function!
tftPrintTest();
delay(4000);
// a single pixel
tft.drawPixel(tft.width()/2, tft.height()/2, ST77XX_GREEN);
delay(500);
// line draw test
testlines(ST77XX_YELLOW);
delay(500);
// optimized lines
testfastlines(ST77XX_RED, ST77XX_BLUE);
delay(500);
testdrawrects(ST77XX_GREEN);
delay(500);
testfillrects(ST77XX_YELLOW, ST77XX_MAGENTA);
delay(500);
tft.fillScreen(ST77XX_BLACK);
testfillcircles(10, ST77XX_BLUE);
testdrawcircles(10, ST77XX_WHITE);
delay(500);
testroundrects();
delay(500);
testtriangles();
delay(500);
mediabuttons();
delay(500);
Serial.println("done");
delay(1000);
}
void loop() {
tft.invertDisplay(true);
delay(500);
tft.invertDisplay(false);
delay(500);
}
void testlines(uint16_t color) {
tft.fillScreen(ST77XX_BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(0, 0, x, tft.height()-1, color);
delay(0);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(0, 0, tft.width()-1, y, color);
delay(0);
}
tft.fillScreen(ST77XX_BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
delay(0);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(tft.width()-1, 0, 0, y, color);
delay(0);
}
tft.fillScreen(ST77XX_BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(0, tft.height()-1, x, 0, color);
delay(0);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
delay(0);
}
tft.fillScreen(ST77XX_BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
delay(0);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
delay(0);
}
}
void testdrawtext(char *text, uint16_t color) {
tft.setCursor(0, 0);
tft.setTextColor(color);
tft.setTextWrap(true);
tft.print(text);
}
void testfastlines(uint16_t color1, uint16_t color2) {
tft.fillScreen(ST77XX_BLACK);
for (int16_t y=0; y < tft.height(); y+=5) {
tft.drawFastHLine(0, y, tft.width(), color1);
}
for (int16_t x=0; x < tft.width(); x+=5) {
tft.drawFastVLine(x, 0, tft.height(), color2);
}
}
void testdrawrects(uint16_t color) {
tft.fillScreen(ST77XX_BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
}
}
void testfillrects(uint16_t color1, uint16_t color2) {
tft.fillScreen(ST77XX_BLACK);
for (int16_t x=tft.width()-1; x > 6; x-=6) {
tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
}
}
void testfillcircles(uint8_t radius, uint16_t color) {
for (int16_t x=radius; x < tft.width(); x+=radius*2) {
for (int16_t y=radius; y < tft.height(); y+=radius*2) {
tft.fillCircle(x, y, radius, color);
}
}
}
void testdrawcircles(uint8_t radius, uint16_t color) {
for (int16_t x=0; x < tft.width()+radius; x+=radius*2) {
for (int16_t y=0; y < tft.height()+radius; y+=radius*2) {
tft.drawCircle(x, y, radius, color);
}
}
}
void testtriangles() {
tft.fillScreen(ST77XX_BLACK);
int color = 0xF800;
int t;
int w = tft.width()/2;
int x = tft.height()-1;
int y = 0;
int z = tft.width();
for(t = 0 ; t <= 15; t++) {
tft.drawTriangle(w, y, y, x, z, x, color);
x-=4;
y+=4;
z-=4;
color+=100;
}
}
void testroundrects() {
tft.fillScreen(ST77XX_BLACK);
int color = 100;
int i;
int t;
for(t = 0 ; t <= 4; t+=1) {
int x = 0;
int y = 0;
int w = tft.width()-2;
int h = tft.height()-2;
for(i = 0 ; i <= 16; i+=1) {
tft.drawRoundRect(x, y, w, h, 5, color);
x+=2;
y+=3;
w-=4;
h-=6;
color+=1100;
}
color+=100;
}
}
void tftPrintTest() {
tft.setTextWrap(false);
tft.fillScreen(ST77XX_BLACK);
tft.setCursor(0, 30);
tft.setTextColor(ST77XX_RED);
tft.setTextSize(1);
tft.println("Hello World!");
tft.setTextColor(ST77XX_YELLOW);
tft.setTextSize(2);
tft.println("Hello World!");
tft.setTextColor(ST77XX_GREEN);
tft.setTextSize(3);
tft.println("Hello World!");
tft.setTextColor(ST77XX_BLUE);
tft.setTextSize(4);
tft.print(1234.567);
delay(1500);
tft.setCursor(0, 0);
tft.fillScreen(ST77XX_BLACK);
tft.setTextColor(ST77XX_WHITE);
tft.setTextSize(0);
tft.println("Hello World!");
tft.setTextSize(1);
tft.setTextColor(ST77XX_GREEN);
tft.print(p, 6);
tft.println(" Want pi?");
tft.println(" ");
tft.print(8675309, HEX); // print 8,675,309 out in HEX!
tft.println(" Print HEX!");
tft.println(" ");
tft.setTextColor(ST77XX_WHITE);
tft.println("Sketch has been");
tft.println("running for: ");
tft.setTextColor(ST77XX_MAGENTA);
tft.print(millis() / 1000);
tft.setTextColor(ST77XX_WHITE);
tft.print(" seconds.");
}
void mediabuttons() {
// play
tft.fillScreen(ST77XX_BLACK);
tft.fillRoundRect(25, 10, 78, 60, 8, ST77XX_WHITE);
tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_RED);
delay(500);
// pause
tft.fillRoundRect(25, 90, 78, 60, 8, ST77XX_WHITE);
tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_GREEN);
tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_GREEN);
delay(500);
// play color
tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_BLUE);
delay(50);
// pause color
tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_RED);
tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_RED);
// play color
tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_GREEN);
}
真正有趣的是它在 Arduino IDE 中运行没有问题...
我对此还很陌生，所以请监督我对此的普遍理解。
谢谢。