4 releases
Uses old Rust 2015
0.1.3 | Mar 16, 2020 |
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0.1.2 | Mar 16, 2020 |
0.1.1 | Mar 16, 2020 |
0.1.0 | Feb 19, 2020 |
#1843 in Embedded development
1.5MB
206 lines
max6955
A platform agnostic driver to interface with MAX6955 LED Display Driver
Example
A simple example with stm32f3xx_hal
.
#![no_std]
#![no_main]
extern crate panic_halt;
pub use cortex_m::asm::bkpt;
use cortex_m_rt::entry;
use max6955::*;
use stm32f3xx_hal::{i2c::I2c, prelude::*, stm32};
#[entry]
fn main() -> ! {
let dp = stm32::Peripherals::take().unwrap();
let mut flash = dp.FLASH.constrain();
let mut rcc = dp.RCC.constrain();
let clocks = rcc.cfgr.freeze(&mut flash.acr);
let mut gpiob = dp.GPIOB.split(&mut rcc.ahb);
// configure I2C Clock Pin
let scl = gpiob.pb6.into_af4(&mut gpiob.moder, &mut gpiob.afrl);
// configure I2C Data Pin
let sda = gpiob.pb7.into_af4(&mut gpiob.moder, &mut gpiob.afrl);
// I2C interface
let i2c = I2c::i2c1(dp.I2C1, (scl, sda), 10.khz(), clocks, &mut rcc.apb1);
// create an instance with the default address 0x60
let mut max6955 = Max6955::new(i2c).unwrap();
// power up
max6955.powerup().unwrap();
// set intensity
max6955.set_global_intensity(4).unwrap();
// write text
max6955.write_str("HELLO").unwrap();
// enable slow blink effect
max6955
.set_blink(BlinkMode::Enable, BlinkRate::Slow)
.unwrap();
loop {}
}