max6955

A platform agnostic driver to interface with MAX6955 LED Display Driver

• MAX6955 datasheet

Example

A simple example with stm32f3xx_hal.

```rust

![no_std]

![no_main]

extern crate panichalt; pub use cortexm::asm::bkpt; use cortexmrt::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.intoaf4(&mut gpiob.moder, &mut gpiob.afrl); // configure I2C Data Pin let sda = gpiob.pb7.intoaf4(&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 {}

}

```