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Got it working my changing cabling and allocating buffer on the heap

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zenonet
2025-09-07 14:31:06 +02:00
parent 3c280391c8
commit cb048caf24
1 changed files with 25 additions and 47 deletions
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64
src/main.rs
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@@ -1,13 +1,13 @@
use embedded_graphics::{mono_font::MonoTextStyleBuilder, prelude::Point, Drawable, text::{Baseline, Text, TextStyleBuilder}};
use epd_waveshare::{color::Color, epd7in5_v2::Epd7in5, prelude::WaveshareDisplay};
use esp_idf_hal::{delay::{Delay, Ets}, gpio::PinDriver, spi::{config, Spi, SpiDriver, SpiDriverConfig}};
use esp_idf_hal::{delay::{Delay, Ets}, gpio::{Gpio19, PinDriver}, spi::{config, Spi, SpiDriver, SpiDriverConfig}};
use esp_idf_svc::hal::{prelude::*, spi::SpiDeviceDriver};
use embedded_hal::delay::DelayNs;
//static mut display: epd_waveshare::epd7in5_v2::Display7in5 = epd_waveshare::epd7in5_v2::Display7in5::default();
static FRAMEBUF: [u8; 48000] = [1; 48000];
//static FRAMEBUF: [u8; 48000] = [63; 48000];
fn main() {
// It is necessary to call this function once. Otherwise some patches to the runtime
// implemented by esp-idf-sys might not link properly. See https://github.com/esp-rs/esp-idf-template/issues/71
@@ -15,20 +15,20 @@ fn main() {
// Bind the log crate to the ESP Logging facilities
esp_idf_svc::log::EspLogger::initialize_default();
log::info!("Hello, world!");
log::info!("Just logging something again");
let peripherals = Peripherals::take().unwrap();
log::info!("Took peripherals");
let busy = PinDriver::input(peripherals.pins.gpio4).unwrap();
let busy = PinDriver::input(peripherals.pins.gpio17).unwrap();
let rst = PinDriver::output(peripherals.pins.gpio16).unwrap();
let dc = PinDriver::output(peripherals.pins.gpio17).unwrap();
let cs = peripherals.pins.gpio5;
let clk = peripherals.pins.gpio18;
let mosi = peripherals.pins.gpio23;
let cs = peripherals.pins.gpio5; // y
let clk = peripherals.pins.gpio18; // y
let mosi = peripherals.pins.gpio23; // y
let miso = peripherals.pins.gpio19; // aka. dc
let dc = PinDriver::output(miso).unwrap();
log::info!("Initialized pins");
@@ -36,10 +36,10 @@ fn main() {
let config = config::Config::new();
let mut spi = SpiDeviceDriver::new_single(
peripherals.spi3,
peripherals.spi2, // 2 oder 3?
clk,
peripherals.pins.gpio21,
Some(mosi),
mosi,
Option::<Gpio19>::None,
Some(cs),
&SpiDriverConfig::default(),
&config
@@ -47,7 +47,9 @@ fn main() {
log::info!("Initialized spi interface");
//static mut display: epd_waveshare::epd7in5_v2::Display7in5 = epd_waveshare::epd7in5_v2::Display7in5::default();
// Allocating on the stack makes the chip crash. We gotta put it on the heap
let mut display = Box::new(epd_waveshare::epd7in5_v2::Display7in5::default());
display.set_rotation(epd_waveshare::prelude::DisplayRotation::Rotate180);
let mut delay = Ets;
@@ -57,45 +59,21 @@ fn main() {
log::info!("Created display object");
//draw_text(&mut display, "Hello esp", 5, 50);
draw_text(&mut display, "Hello esp", 5, 50);
log::info!("Draw text done");
let res = epd7in5.update_and_display_frame(&mut spi, &FRAMEBUF, &mut delay);
let res = epd7in5.update_and_display_frame(&mut spi, &*display.buffer(), &mut delay);
if let Err(e) = res{
log::info!("{}", e);
}
/* let mut i = 0;
loop{
let d = &mut delay;
d.delay_ms(500);
log::info!("Loop {}", i);
i += 1;
if i == 5{
//let data = display.buffer();
/* for d in data{
log::info!("{}", d)
} */
}
} */
/*
// Get SpiDevice trait implementation
//let mut spi_device = spi.into_device();
// let mut epd7in5 = Epd7in5::new(spi, busy, dc, rst, delay, delay_us)
*/
}
fn draw_text(display: &mut epd_waveshare::epd7in5_v2::Display7in5, text: &str, x: i32, y: i32) {
let style = MonoTextStyleBuilder::new()
.font(&embedded_graphics::mono_font::ascii::FONT_6X10)
.font(&embedded_graphics::mono_font::ascii::FONT_10X20)
.text_color(Color::White)
.background_color(Color::Black)
.build();
@@ -103,5 +81,5 @@ fn draw_text(display: &mut epd_waveshare::epd7in5_v2::Display7in5, text: &str, x
let text_style = TextStyleBuilder::new().baseline(Baseline::Top).build();
// The problem:
//let _ = Text::with_text_style(text, Point::new(x, y), style, text_style).draw(display);
let _ = Text::with_text_style(text, Point::new(x, y), style, text_style).draw(display);
}