Use the onboard LED and try to transmit at 2MB

pico-st7789/src/main.rs

@@ -179,7 +179,7 @@ unsafe fn main() -> ! {
     // An abstraction for a timer which we can use to delay the code.
     let mut timer = Timer::new(peripherals.TIMER, &mut peripherals.RESETS, &clocks);
 
-    let mut led = pins.gpio16.into_function();
+    let mut led = pins.led.into_function();
 
     // Grab the clock and data pins for SPI1. For Clock pins and for Data pins, there are only two
     // pins each on the Pico which can function for SPI1.
@@ -201,7 +201,7 @@ unsafe fn main() -> ! {
         // The SPI system uses the peripheral clock
         clocks.peripheral_clock.freq(),
         // Transmit data at a rate of 1Mbit.
-        32_u32.MHz(),
+        2_u32.MHz(),
         // Run with SPI Mode 1. This means that the clock line should start high and that data will
         // be sampled starting at the first falling edge.
         embedded_hal::spi::MODE_3,